D4N
2014-09-27
: Pdf 41706-Attachment 41706-Attachment 006085 Batch8 unilog
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Page Count: 35
Safety Limit Switch
D4N
Upgraded Safety Limit Switches Based
on the Popular D4D, Providing a Full
Lineup Conforming to International
Standards
■Lineup includes three contact models with 2NC/1NO and 3NC
contact forms in addition to the previous contact forms 1NC/
1NO, and 2NC. Models with MBB contacts are also available.
■M12-connector models are available, saving on labor and
simplifying replacement.
■
Standardized gold-clad contacts provide high contact reliability.
Can be used with both standard loads and microloads.
■Conforms to EN115, EN81-1, and EN81-2 (slow-action models
only).
■Lineup includes both slow-action and snap-action models with
Zb contacts.
■Certified standards: UL, EN (TÜV), and CCC
Model Number Structure
Model Number Legend
1. Conduit size
1: Pg13.5 (1-conduit)
2: G1/2 (1-conduit)
3: 1/2-14NPT (1-conduit)
4: M20 (1-conduit)
5: Pg13.5 (2-conduit)
6: G1/2 (2-conduit)
7: 1/2-14NPT (2-conduit)
8: M20 (2-conduit)
9: M12 connector (1-conduit)
2. Built-in Switch
1: 1NC/1NO (snap-action)
2: 2NC (snap-action)
A: 1NC/1NO (slow-action)
B: 2NC (slow-action)
C: 2NC/1NO (slow-action)
D: 3NC (slow-action)
E: 1NC/1NO (MBB contact) (slow-action)
F: 2NC/1NO (MBB contact) (slow-action)
3. Head and Actuator
20: Roller lever (resin lever, resin roller)
22: Roller lever (metal lever, resin roller)
25: Roller lever (metal lever, metal roller)
26: Roller lever (metal lever, bearing roller)
2G: Adjustable roller lever, form lock (metal lever, resin roller)
2H: Adjustable roller lever, form lock (metal lever, rubber roller)
31: Top Plunger
32: Top Roller Plunger
62: One-way roller arm lever (horizontal)
72: One-way roller arm lever (vertical)
80: Cat whisker
87: Plastic rod
RE:Fork lever lock (right operation)
LE: Fork lever lock (left operation)
Note: Contact your sales representative for details on models
with safety standard certification.
Be sure to read the “Safety Precautions” on page 18
and the “Precautions for All Safety Limit Switches” .
1 2 3
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D4N
Ordering Information
List of Models
Switches with Two Contacts (with Direct Opening Mechanism)
Note:
It is recommended that M20 be used for Switches to be exported to Europe and 1/2-14NPT be used for Switches to be exported to North American countries.
Actuator Conduit size
Built-in switch mechanism
1NC/1NO
(Snap-action)
2NC
(Snap-action)
1NC/1NO
(Slow-action)
2NC
(Slow-action)
Model Direct
opening Model Direct
opening Model Direct
opening Model Direct
opening
Roller lever (resin
lever, resin roller)
1-conduit
Pg13.5 D4N-1120 D4N-1220 D4N-1A20 D4N-1B20
G1/2 D4N-2120 D4N-2220 D4N-2A20 D4N-2B20
1/2-14NPT D4N-3120 D4N-3220 D4N-3A20 D4N-3B20
M20 D4N-4120 D4N-4220 D4N-4A20 D4N-4B20
M12 connector D4N-9120 D4N-9220 D4N-9A20 D4N-9B20
2-conduit
Pg13.5 D4N-5120 D4N-5220 D4N-5A20 D4N-5B20
G1/2 D4N-6120 D4N-6220 D4N-6A20 D4N-6B20
M20 D4N-8120 D4N-8220 D4N-8A20 D4N-8B20
Roller lever (metal
lever, resin roller)
1-conduit
Pg13.5 D4N-1122 D4N-1222 D4N-1A22 D4N-1B22
G1/2 D4N-2122 D4N-2222 D4N-2A22 D4N-2B22
1/2-14NPT D4N-3122 D4N-3222 D4N-3A22 D4N-3B22
M20 D4N-4122 D4N-4222 D4N-4A22 D4N-4B22
M12 connector D4N-9122 D4N-9222 D4N-9A22 D4N-9B22
2-conduit
Pg13.5 D4N-5122 D4N-5222 D4N-5A22 D4N-5B22
G1/2 D4N-6122 D4N-6222 D4N-6A22 D4N-6B22
M20 D4N-8122 D4N-8222 D4N-8A22 D4N-8B22
Roller lever (metal
lever, metal roller)
1-conduit
Pg13.5 D4N-1125 D4N-1225 D4N-1A25 D4N-1B25
G1/2 D4N-2125 D4N-2225 D4N-2A25 D4N-2B25
1/2-14NPT D4N-3125 D4N-3225 D4N-3A25 D4N-3B25
M20 D4N-4125 D4N-4225 D4N-4A25 D4N-4B25
M12 connector D4N-9125 D4N-9225 D4N-9A25 D4N-9B25
Roller lever (metal
lever, bearing roller)
1-conduit
Pg13.5 D4N-1126 D4N-1226 D4N-1A26 D4N-1B26
G1/2 D4N-2126 D4N-2226 D4N-2A26 D4N-2B26
1/2-14NPT D4N-3126 D4N-3226 D4N-3A26 D4N-3B26
M20 D4N-4126 D4N-4226 D4N-4A26 D4N-4B26
M12 connector D4N-9126 D4N-9226 D4N-9A26 D4N-9B26
Plunger
1-conduit
Pg13.5 D4N-1131 D4N-1231 D4N-1A31 D4N-1B31
G1/2 D4N-2131 D4N-2231 D4N-2A31 D4N-2B31
1/2-14NPT D4N-3131 D4N-3231 D4N-3A31 D4N-3B31
M20 D4N-4131 D4N-4231 D4N-4A31 D4N-4B31
M12 connector D4N-9131 D4N-9231 D4N-9A31 D4N-9B31
2-conduit
Pg13.5 D4N-5131 D4N-5231 D4N-5A31 D4N-5B31
G1/2 D4N-6131 D4N-6231 D4N-6A31 D4N-6B31
M20 D4N-8131 D4N-8231 D4N-8A31 D4N-8B31
Roller plunger
1-conduit
Pg13.5 D4N-1132 D4N-1232 D4N-1A32 D4N-1B32
G1/2 D4N-2132 D4N-2232 D4N-2A32 D4N-2B32
1/2-14NPT D4N-3132 D4N-3232 D4N-3A32 D4N-3B32
M20 D4N-4132 D4N-4232 D4N-4A32 D4N-4B32
M12 connector D4N-9132 D4N-9232 D4N-9A32 D4N-9B32
2-conduit
Pg13.5 D4N-5132 D4N-5232 D4N-5A32 D4N-5B32
G1/2 D4N-6132 D4N-6232 D4N-6A32 D4N-6B32
M20 D4N-8132 D4N-8232 D4N-8A32 D4N-8B32
One-way roller arm
lever (horizontal)
1-conduit
Pg13.5 D4N-1162 D4N-1262 D4N-1A62 D4N-1B62
G1/2 D4N-2162 D4N-2262 D4N-2A62 D4N-2B62
1/2-14NPT D4N-3162 D4N-3262 D4N-3A62 D4N-3B62
M20 D4N-4162 D4N-4262 D4N-4A62 D4N-4B62
M12 connector D4N-9162 D4N-9262 D4N-9A62 D4N-9B62
2-conduit
Pg13.5 D4N-5162 D4N-5262 D4N-5A62 D4N-5B62
G1/2 D4N-6162 D4N-6262 D4N-6A62 D4N-6B62
M20 D4N-8162 D4N-8262 D4N-8A62 D4N-8B62
One-way roller arm
lever (vertical)
1-conduit
Pg13.5 D4N-1172 D4N-1272 D4N-1A72 D4N-1B72
G1/2 D4N-2172 D4N-2272 D4N-2A72 D4N-2B72
1/2-14NPT D4N-3172 D4N-3272 D4N-3A72 D4N-3B72
M20 D4N-4172 D4N-4272 D4N-4A72 D4N-4B72
M12 connector D4N-9172 D4N-9272 D4N-9A72 D4N-9B72
2-conduit
Pg13.5 D4N-5172 D4N-5272 D4N-5A72 D4N-5B72
G1/2 D4N-6172 D4N-6272 D4N-6A72 D4N-6B72
M20 D4N-8172 D4N-8272 D4N-8A72 D4N-8B72
Adjustable roller
lever, form lock
(metal lever, resin
roller) 1-conduit
Pg13.5 D4N-112G D4N-122G D4N-1A2G D4N-1B2G
G1/2 D4N-212G D4N-222G D4N-2A2G D4N-2B2G
1/2-14NPT D4N-312G D4N-322G D4N-3A2G D4N-3B2G
M20 D4N-412G D4N-422G D4N-4A2G D4N-4B2G
M12 connector D4N-912G D4N-922G D4N-9A2G D4N-9B2G
2-conduit G1/2 D4N-612G D4N-622G D4N-6A2G D4N-6B2G
M20 D4N-812G D4N-822G D4N-8A2G D4N-8B2G
Adjustable roller
lever, form lock
(metal lever, rubber
roller) 1-conduit
Pg13.5 D4N-112H D4N-122H D4N-1A2H D4N-1B2H
G1/2 D4N-212H D4N-222H D4N-2A2H D4N-2B2H
1/2-14NPT D4N-312H D4N-322H D4N-3A2H D4N-3B2H
M20 D4N-412H D4N-422H D4N-4A2H D4N-4B2H
M12 connector D4N-912H D4N-922H D4N-9A2H D4N-9B2H
2-conduit G1/2 D4N-612H D4N-622H D4N-6A2H D4N-6B2H
M20 D4N-812H D4N-822H D4N-8A2H D4N-8B2H
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D4N
Switches with Three Contacts and MBB Contacts (with Direct Opening Mechanism)
Note:
It is recommended that M20 be used for Switches to be exported to Europe and 1/2-14NPT be used for Switches to be exported to North American countries.
Actuator Conduit size
Built-in switch mechanism
2NC/1NO
(Slow-action)
3NC
(Slow-action)
1NC/1NO MBB
(Slow-action)
2NC/1NO MBB
(Slow-action)
Model Direct
opening Model Direct
opening Model Direct
opening Model Direct
opening
Roller lever (resin
lever, resin roller)
1-conduit
Pg13.5 D4N-1C20 D4N-1D20 D4N-1E20 D4N-1F20
G1/2 D4N-2C20 D4N-2D20 D4N-2E20 D4N-2F20
1/2-14NPT D4N-3C20 D4N-3D20 D4N-3E20 D4N-3F20
M20 D4N-4C20 D4N-4D20 D4N-4E20 D4N-4F20
M12 connector --- --- D4N-9E20 ---
2-conduit
Pg13.5 D4N-5C20 D4N-5D20 D4N-5E20 D4N-5F20
G1/2 D4N-6C20 D4N-6D20 D4N-6E20 D4N-6F20
M20 D4N-8C20 D4N-8D20 D4N-8E20 D4N-8F20
Roller lever (metal
lever, resin roller)
1-conduit
Pg13.5 D4N-1C22 D4N-1D22 D4N-1E22 D4N-1F22
G1/2 D4N-2C22 D4N-2D22 D4N-2E22 D4N-2F22
1/2-14NPT D4N-3C22 D4N-3D22 D4N-3E22 D4N-3F22
M20 D4N-4C22 D4N-4D22 D4N-4E22 D4N-4F22
M12 connector --- --- D4N-9E22 ---
2-conduit
Pg13.5 D4N-5C22 D4N-5D22 D4N-5E22 D4N-5F22
G1/2 D4N-6C22 D4N-6D22 D4N-6E22 D4N-6F22
M20 D4N-8C22 D4N-8D22 D4N-8E22 D4N-8F22
Roller lever (metal
lever, metal roller)
1-conduit
Pg13.5 D4N-1C25 D4N-1D25 D4N-1E25 D4N-1F25
G1/2 D4N-2C25 D4N-2D25 D4N-2E25 D4N-2F25
1/2-14NPT D4N-3C25 D4N-3D25 D4N-3E25 D4N-3F25
M20 D4N-4C25 D4N-4D25 D4N-4E25 D4N-4F25
M12 connector --- --- D4N-9E25 ---
Roller lever (metal
lever, bearing roller)
1-conduit
Pg13.5 D4N-1C26 D4N-1D26 D4N-1E26 D4N-1F26
G1/2 D4N-2C26 D4N-2D26 D4N-2E26 D4N-2F26
1/2-14NPT D4N-3C26 D4N-3D26 D4N-3E26 D4N-3F26
M20 D4N-4C26 D4N-4D26 D4N-4E26 D4N-4F26
M12 connector --- --- D4N-9E26 ---
Plunger
1-conduit
Pg13.5 D4N-1C31 D4N-1D31 D4N-1E31 D4N-1F31
G1/2 D4N-2C31 D4N-2D31 D4N-2E31 D4N-2F31
1/2-14NPT D4N-3C31 D4N-3D31 D4N-3E31 D4N-3F31
M20 D4N-4C31 D4N-4D31 D4N-4E31 D4N-4F31
M12 connector --- --- D4N-9E31 ---
2-conduit
Pg13.5 D4N-5C31 D4N-5D31 D4N-5E31 D4N-5F31
G1/2 D4N-6C31 D4N-6D31 D4N-6E31 D4N-6F31
M20 D4N-8C31 D4N-8D31 D4N-8E31 D4N-8F31
Roller plunger
1-conduit
Pg13.5 D4N-1C32 D4N-1D32 D4N-1E32 D4N-1F32
G1/2 D4N-2C32 D4N-2D32 D4N-2E32 D4N-2F32
1/2-14NPT D4N-3C32 D4N-3D32 D4N-3E32 D4N-3F32
M20 D4N-4C32 D4N-4D32 D4N-4E32 D4N-4F32
M12 connector --- --- D4N-9E32 ---
2-conduit
Pg13.5 D4N-5C32 D4N-5D32 D4N-5E32 D4N-5F32
G1/2 D4N-6C32 D4N-6D32 D4N-6E32 D4N-6F32
M20 D4N-8C32 D4N-8D32 D4N-8E32 D4N-8F32
One-way roller arm
lever (horizontal)
1-conduit
Pg13.5 D4N-1C62 D4N-1D62 D4N-1E62 D4N-1F62
G1/2 D4N-2C62 D4N-2D62 D4N-2E62 D4N-2F62
1/2-14NPT D4N-3C62 D4N-3D62 D4N-3E62 D4N-3F62
M20 D4N-4C62 D4N-4D62 D4N-4E62 D4N-4F62
M12 connector --- --- D4N-9E62 ---
2-conduit
Pg13.5 D4N-5C62 D4N-5D62 D4N-5E62 D4N-5F62
G1/2 D4N-6C62 D4N-6D62 D4N-6E62 D4N-6F62
M20 D4N-8C62 D4N-8D62 D4N-8E62 D4N-8F62
One-way roller arm
lever (vertical)
1-conduit
Pg13.5 D4N-1C72 D4N-1D72 D4N-1E72 D4N-1F72
G1/2 D4N-2C72 D4N-2D72 D4N-2E72 D4N-2F72
1/2-14NPT D4N-3C72 D4N-3D72 D4N-3E72 D4N-3F72
M20 D4N-4C72 D4N-4D72 D4N-4E72 D4N-4F72
M12 connector --- --- D4N-9E72 ---
2-conduit
Pg13.5 D4N-5C72 D4N-5D72 D4N-5E72 D4N-5F72
G1/2 D4N-6C72 D4N-6D72 D4N-6E72 D4N-6F72
M20 D4N-8C72 D4N-8D72 D4N-8E72 D4N-8F72
Adjustable roller
lever, form lock
(metal lever, resin
roller) 1-conduit
Pg13.5 D4N-1C2G D4N-1D2G D4N-1E2G D4N-1F2G
G1/2 D4N-2C2G D4N-2D2G D4N-2E2G D4N-2F2G
1/2-14NPT D4N-3C2G D4N-3D2G D4N-3E2G D4N-3F2G
M20 D4N-4C2G D4N-4D2G D4N-4E2G D4N-4F2G
M12 connector --- --- D4N-9E2G ---
2-conduit G1/2 D4N-6C2G D4N-6D2G D4N-6E2G D4N-6F2G
M20 D4N-8C2G D4N-8D2G D4N-8E2G D4N-8F2G
Adjustable roller
lever, form lock
(metal lever, rubber
roller) 1-conduit
Pg13.5 D4N-1C2H D4N-1D2H D4N-1E2H D4N-1F2H
G1/2 D4N-2C2H D4N-2D2H D4N-2E2H D4N-2F2H
1/2-14NPT D4N-3C2H D4N-3D2H D4N-3E2H D4N-3F2H
M20 D4N-4C2H D4N-4D2H D4N-4E2H D4N-4F2H
M12 connector --- --- D4N-9E2H ---
2-conduit G1/2 D4N-6C2H D4N-6D2H D4N-6E2H D4N-6F2H
M20 D4N-8C2H D4N-8D2H D4N-8E2H D4N-8F2H
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D4N
General-purpose Switches with Two Contacts
Note: 1. It is recommended that M20 be used for Switches to be exported to Europe and 1/2-14NPT be used for Switches to be exported to North
American countries.
2. Mechanically speaking, these models are basic limit switches.
General-purpose Switches with Three Contacts and MBB Contacts
Note: 1. It is recommended that M20 be used for Switches to be exported to Europe and 1/2-14NPT be used for Switches to be exported to North
American countries.
2. Mechanically speaking, these models are basic limit switches.
Actuator Conduit size
Built-in switch mechanism
1NC/1NO
(Snap-action)
2NC
(Snap-action)
1NC/1NO
(Slow-action)
2NC
(Slow-action)
Model Direct
opening Model Direct
opening Model Direct
opening Model Direct
opening
Fork lever lock
(right operation) 1-conduit
G1/2
---
---
---
---
D4N-2ARE
---
D4N-2BRE
---
1/2-14NPT D4N-3ARE D4N-3BRE
M20 D4N-4ARE D4N-4BRE
2-conduit G1/2 --- --- D4N-6ARE --- D4N-6BRE ---
M20 D4N-8ARE D4N-8BRE
Fork lever lock (left
operation) 1-conduit
G1/2
--- ---
D4N-2ALE
---
D4N-2BLE
---
1/2-14NPT D4N-3ALE D4N-3BLE
M20 D4N-4ALE D4N-4BLE
2-conduit G1/2 --- --- D4N-6ALE --- D4N-6BLE ---
M20 D4N-8ALE D4N-8BLE
Cat whisker
1-conduit
G1/2 D4N-2180
---
D4N-2280
---
---
---
D4N-2B80
---
1/2-14NPT D4N-3180 D4N-3280 D4N-3B80
M20 D4N-4180 D4N-4280 D4N-4B80
2-conduit G1/2 D4N-6180 --- D4N-6280 --- --- D4N-6B80 ---
M20 D4N-8180 D4N-8280 D4N-8B80
Plastic rod
1-conduit
G1/2 D4N-2187
---
D4N-2287
--- ---
D4N-2B87
---
1/2-14NPT D4N-3187 D4N-3287 D4N-3B87
M20 D4N-4187 D4N-4287 D4N-4B87
2-conduit G1/2 D4N-6187 --- D4N-6287 --- --- D4N-6B87 ---
M20 D4N-8187 D4N-8287 D4N-8B87
Actuator Conduit size
Built-in switch mechanism
2NC/1NO
(Slow-action)
3NC
(Slow-action)
1NC/1NO MBB
(Slow-action)
2NC/1NO MBB
(Slow-action)
Model Direct
opening Model Direct
opening Model Direct
opening Model Direct
opening
Fork lever lock
(right operation) 1-conduit
G1/2 D4N-2CRE
---
D4N-2DRE
---
D4N-2ERE
---
D4N-2FRE
---
1/2-14NPT D4N-3CRE D4N-3DRE D4N-3ERE D4N-3FRE
M20 D4N-4CRE D4N-4DRE D4N-4ERE D4N-4FRE
2-conduit G1/2 D4N-6CRE --- D4N-6DRE --- D4N-6ERE --- D4N-6FRE ---
M20 D4N-8CRE D4N-8DRE D4N-8ERE D4N-8FRE
Fork lever lock
(left operation) 1-conduit
G1/2 D4N-2CLE
---
D4N-2DLE
---
D4N-2ELE
---
D4N-2FLE
---
1/2-14NPT D4N-3CLE D4N-3DLE D4N-3ELE D4N-3FLE
M20 D4N-4CLE D4N-4DLE D4N-4ELE D4N-4FLE
2-conduit G1/2 D4N-6CLE --- D4N-6DLE --- D4N-6ELE --- D4N-6FLE ---
M20 D4N-8CLE D4N-8DLE D4N-8ELE D4N-8FLE
Cat whisker
1-conduit
G1/2
---
---
D4N-2D80
---
---
---
---
---
1/2-14NPT D4N-3D80
M20 D4N-4D80
2-conduit G1/2 --- D4N-6D80 --- --- ---
M20 D4N-8D80
Plastic rod
1-conduit
G1/2
---
D4N-2D87
--- --- ---
1/2-14NPT D4N-3D87
M20 D4N-4D87
2-conduit G1/2 --- D4N-6D87 --- --- ---
M20 D4N-8D87
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D4N
Specifications
Standards and EC Directives
Conforms to the following EC Directives:
xMachinery Directive
xLow Voltage Directive
xEN50047
xEN60204-1
xEN1088
xGS-ET-15
Certified Standards
*1.Consult your OMRON representative for details.
*2.Certification for CSA C22.2 No. 14 is authorized by the UL mark.
*3.Ask your OMRON representative for information on certified
models.
Certified Standard Ratings
TÜV (EN60947-5-1), CCC (GB14048.5)
Note: Use a 10 A fuse type gI or gG that conforms to IEC269 as a
short-circuit protection device. This fuse is not built into the
Switch.
UL/CSA (UL508, CSA C22.2 No. 14)
A300
Q300
Certification
body Standard File No.
TÜV Product
Service
EN60947-5-1
(certified direct opening) *1
UL *2 UL508, CSA C22.2 No.14 E76675
CQC (CCC) *3 GB14048.5
2004010305105973
Item Utilization
category AC-15 DC-13
Rated operating current (Ie)3 A 0.27 A
Rated operating voltage (Ue)240 V 250 V
Rated
voltage Carry current Current (A)
Volt-amperes (VA)
Make Break Make Break
120 VAC 10 A 60 6 7,200 720
240 VAC 30 3
Rated
voltage Carry current Current (A)
Volt-amperes (VA)
Make Break Make Break
125 VDC 2.5 A 0.55 0.55 69 69
250 VDC 0.27 0.27
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D4N
Characteristics
Note: 1. The above values are initial values.
2. Once a contact has been used to switch a standard load, it cannot be used for a load of a smaller capacity.
Doing so may result in roughening of the contact surface and contact reliability may be lost.
*1.The degree of protection is tested using the method specified by the standard (EN60947-5-1). Confirm that sealing properties are sufficient for
the operating conditions and environment beforehand. Although the switch box is protected from dust or water penetration, do not use the D4N
in places where foreign material such as dust, dirt, oil, water, or chemicals may penetrate through the head. Otherwise, accelerated wear, Switch
damage or malfunctioning may occur.
*2.The durability is for an ambient temperature of 5 to 35qC and an ambient humidity of 40% to 70%. For more details, consult your
OMRON representative.
*3.Do not pass the 3 A, 250 VAC load through more than 2 circuits.
*4.This value will vary with the switching frequency, environment, and reliability level. Confirm that correct operation is possible with the actual load
beforehand.
*5.The mechanical durability of fork lever lock models is 10,000,000 operations min.
Degree of protection *1 IP67 (EN60947-5-1)
Durability *2
Mechanical 15,000,000 operations min. *5
Electrical 500,000 operations min. (3 A resistive load at 250 VAC) *3
300,000 operations min. (10 A resistive load at 250 VAC)
Operating speed 1 to 500 mm/s (D4N-1120)
Operating frequency 30 operations/minute max.
Contact resistance 25 m: max.
Minimum applicable load *4 1 mA resistive load at 5 VDC (N-level reference value)
Rated insulation voltage (Ui)300 V
Rated frequency 50/60 Hz
Protection against electric shock Class II (double insulation)
Pollution degree (operating environment) 3 (EN60947-5-1)
Impulse withstand
voltage
(EN60947-5-1)
Between terminals of
same polarity 2.5 kV
Between terminals of
different polarity 4 kV
Between each terminal
and non-current carrying
metallic parts 6 kV
Insulation resistance 100 M: min.
Contact gap Snap-action: 2 u 0.5 mm min.
Slow-action: 2 u 2 mm min.
Vibration resistance Malfunction 10 to 55 Hz, 0.75 mm single amplitude
Shock resistance Destruction 1,000 m/s2 min.
Malfunction 300 m/s2 min.
Conditional short-circuit current 100 A (EN60947-5-1)
Conventional free air thermal current (Ith)10 A (EN60947-5-1)
Ambient operating temperature 30to 70qC (with no icing)
Ambient operating humidity 95% max.
Weight Approx. 82 g (D4N-1120)
Approx. 99 g (D4N-5120)
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D4N
Structure and Nomenclature
Structure
Direct Opening Mechanism
1NC/1NO Contact (Slow-action) 2NC Contact (Slow-action)
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
Note: M12 connector types are not available for
Switches with three contacts.
Head
The direction of the switch head can be varied to any of
the four directions. (Roller plunger models can be
mounted in either of two directions at a 90° angle.)
Conduit Opening
A wide variety of conduits is available.
Built-in Switch
The built-in switch has a direct opening mechanism
that forcibly separates the NC contact even when
there is contact deposit.
Safety-oriented Lever Setting
(Form-lock construction)
Grooves which engage the lever are cut in the lever and
rotary shaft to prevent the lever from slipping against the
rotary shaft.
There are resin-lever and metal-lever types.
Cover
The cover, with a hinge on its lower part, can
be opened by removing the screw of the
cover, which ensures ease of maintenance
and wiring.
Size Box 1-conduit 2-conduit
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
---
Contact spring
Return spring
Fixed contact (NC)
Fixed contact (NO)
Plunger
Movable contact
Conforms to EN60947-5-1 Direct Opening Operation
(Only the NC contact side has a direct opening
mechanism.)
When contact welding occurs, the contacts are
separated from each other by the plunger being
pushed in.
Contact spring
Fixed contact (NC)
Plunger
Movable contact
Return spring
Conforms to EN60947-5-1 Direct Opening Operation
(Both NC contacts have a direct opening
mechanism.)
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D4N
Contact Form
Note: Terminals are numbered according to EN50013 and the contact forms are according to IEC947-5-1.
* MBB (Make Before Break) contacts have an overlapping structure, so that before the normally closed contact (NC) opens, the normally open
contact (NO) closes.
Model Contact Contact form Operating pattern Remarks
D4N-@1@1NC/1NO
(Snap-action)
D4N-@2@2NC (Snap-action)
D4N-@A@1NC/1NO
(Slow-action)
D4N-@B@2NC (Slow-action)
D4N-@C@2NC/1NO
(Slow-action)
D4N-@D@3NC (Slow-action)
D4N-@E@1NC/1NO MBB *
(Slow-action)
D4N-@F@2NC/1NO MBB *
(Slow-action)
14
32
13
31
Zb
ON
Stroke
13-14
31-32
Only NC contacts 31-32 have a
certified direct opening
mechanism.
The terminals 13-14 and 31-32
can be used as unlike poles.
11
31
12
32
Zb
ON
Stroke
11-12
31-32
Only NC contacts 11-12 and
31-32 have a certified direct
opening mechanism.
The terminals 11-12 and 31-32
can be used as unlike poles.
11
33
12
34
Zb
ON
Stroke
11-12
33-34
Only NC contacts 11-12 have a
certified direct opening
mechanism.
The terminals 11-12 and 33-34
can be used as unlike poles.
11
31
12
32
Zb
ON
Stroke
11-12
31-32
Only NC contacts 11-12 and
31-32 have a certified direct
opening mechanism.
The terminals 11-12 and 31-32
can be used as unlike poles.
33 34
11
21
12
22
Zb
ON
Stroke
21-22
33-34
11-12
Only NC contacts 11-12 and
21-22 have a certified direct
opening mechanism.
The terminals 11-12, 21-22, and
33-34 can be used as unlike
poles.
11
21
12
22
31 32
Zb
ON
Stroke
11-12
21-22
31-32
Only NC contacts 11-12, 21-22,
and 31-32 have a certified direct
opening mechanism.
The terminals 11-12, 21-22, and
31-32 can be used as unlike
poles.
11
33
12
34
Zb
ON
Stroke
11-12
33-34
Only NC contacts 11-12 have a
certified direct opening
mechanism.
The terminals 11-12 and 33-34
can be used as unlike poles.
33 34
11
21
12
22
Zb
ON
Stroke
11-12
21-22
33-34
Only NC contacts 11-12 and
21-22 have a certified direct
opening mechanism.
The terminals 11-12, 21-22 and
33-34 can be used as unlike poles.
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D4N
Dimensions and Operating Characteristics (Unit: mm)
Switches
1-conduit Models
Note: Unless otherwise specified, a tolerance of r0.4 mm applies to all dimensions.
* Refer to page 12 for details on M12 connectors.
Roller Lever (Resin Lever, Resin Roller)
D4N-1@20 D4N-2@20
D4N-3@20 D4N-4@20
D4N-9@20 * 17.5 dia. × 6.8
resin roller
Two, 4+0.15 dia. holes
Depth: 5
0
30
27.5
11±0.2
47±1
40±1
(27)
21.5
22±0.2
31 max.
55 47±0.2
2.5
9±0.2
26R
18
20±0.1
22±0.1
14.2
Resin lever
2.15±0.05R
mounting holes
Conduit cap
20.5 × 20.5
Roller Lever (Metal Lever, Resin Roller)
D4N-1@22 D4N-2@22
D4N-3@22 D4N-4@22
D4N-9@22 * 17.5 dia. × 6.8
resin roller
Two, 4+0.15 dia. holes
Depth: 5
0
30
27.5
11±0.2
45±1
39.5±1
(31)
21.5
22±0.2
31 max.
55 47±0.2
2.5
9±0.2
26R
18
20±0.1
22±0.1
14.2
Metal lever
2.15±0.05R
mounting holes
Conduit cap
20.5 × 20.5
Roller Lever (Metal Lever, Metal Roller)
D4N-1@25 D4N-2@25
D4N-3@25 D4N-4@25
D4N-9@25 * 17.5 dia. × 7
sintered stainless
steel roller
Two, 4+0.15 dia. holes
Depth: 5
0
30
27.5
11±0.2
45±1
39.5±1
(31)
21.5
22±0.2
31 max.
55 47±0.2
2.5
9±0.2
26R
18
20±0.1
22±0.1
14.2
Metal lever 20.5 × 20.5
2.15±0.05R
mounting holes
Conduit cap
Roller Lever (Metal Lever, Bearing Roller)
D4N-1@26 D4N-2@26
D4N-3@26 D4N-4@26
D4N-9@26 * 17 dia. × 6
Bearing roller
Two, 4+0.15 dia. holes
Depth: 5
0
Metal lever 20.5 × 20.5
2.15±0.05R
mounting holes
Conduit cap 30
27.5
11±0.2
43.6±1
39±1
(31.5)
21.5
22±0.2
31 max.
55 47±0.2
2.5
9±0.2
26R
18
20±0.1
22±0.1
14.2
Snap-action (1NC/1NO) (2NC), Slow-action (2NC)
(3NC)
Note: Variation occurs in the simultaneity of contact opening/closing
operations of 2NC, 2NC/1NO, and 3NC contacts. Check contact
operation.
*1.Only for snap-action models.
*2.Reference value.
*3.For safe use, always make sure that the minimum values or greater
are provided.
Model
Operating characteristics
D4N-@120
D4N-@220
D4N-
@
B20
D4N-
@
D20
D4N-@122
D4N-@222
D4N-
@
B22
D4N-
@
D22
D4N-@125
D4N-@225
D4N-
@
B25
D4N-
@
D25
D4N-@126
D4N-@226
D4N-
@
B26
D4N-
@
D26
Operating force OF max. 5.0 N
Release force RF min. 0.5 N
Pretravel PT 18q to 27q
Overtravel OT min. 40q
Movement differential MD max.
*1
14q
Operating position OP ---
Total travel TT *2 (80q)
Direct opening travel DOT min.
*3
50q
Direct opening force DOF min.
*3
20 N
Slow-action (1NC/1NO) (2NC/1NO)
*1. These PT values are possible when the NC contacts are open (OFF).
*2. These PT values are possible when the NO contacts are closed (ON).
*3.Only for MBB models.
*4.Reference values for MBB models only.
*5.Reference values.
*6.For safe use, always make sure that the minimum values or greater
are provided.
Model
Operating characteristics
D4N-
@
A20
D4N-
@
C20
D4N-
@
E20
D4N-@F20
D4N-
@
A22
D4N-
@
C22
D4N-
@
E22
D4N-@F22
D4N-
@
A25
D4N-
@
C25
D4N-
@
E25
D4N-@F25
D4N-
@
A26
D4N-
@
C26
D4N-
@
E26
D4N-@F26
Operating force OF max. 5.0 N
Release force RF min. 0.5 N
PT *1 18q to 27q
PT (2nd)
*2
(44q)
PT *3 27.5q to 36.5q
PT (2nd)
*4
(18q)
Overtravel OT min. 40q
Operating position OP ---
Total travel TT *5 (80q)
Direct opening travel DOT min.
*6
50q
Direct opening force DOF min.
*6
20 N
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D4N
1-conduit Models
Note: Unless otherwise specified, a tolerance of r0.4 mm applies to all dimensions.
* Refer to page 12 for details on M12 connectors.
Plunger
D4N-1@31 D4N-2@31
D4N-3@31 D4N-4@31
D4N-9@31 *
Two, 3±0.05 dia.
holes
6-dia. resin
plunger
Two, 4+0.15 dia. holes
Depth: 5
0
30
(31.5)
21.5
25
±0.1
11
±0.2
22
±0.2
31 max.
55 47
±0.2
2.5
9
±0.2
OP
20
±0.1
22
±0.1
14.2
12 dia.
2.15±0.05R
mounting holes
Conduit cap
Roller Plunger
D4N-1@32 D4N-2@32
D4N-3@32 D4N-4@32
D4N-9@32 *
9.5 dia. × 5
resin roller
Two, 4
+0.15
dia. holes
Depth: 5
0
30
25.2
11±0.2
22±0.2
31 max.
55 47±0.2
2.5
9±0.2
OP
20±0.1
22±0.1
14.2
(31.5)
21.5
20.5 × 20.5
2.15±0.05R
mounting holes
Conduit cap
Two, 4
+0.15 dia. holes
Depth: 5
0
One-way Roller Arm Lever
(Horizontal)
D4N-1@62 D4N-2@62
D4N-3@62 D4N-4@62
D4N-9@62 *
Operating direction
12.5 dia. × 5
resin roller
30
14.8
23.3
13.5
19.5±0.2
11±0.2
11±0.2
20R 10.2
22±0.2
31 max.
47±0.2
2.5
9±0.2
OP
20±0.1
22±0.1
14.2
55
(31.5)
21.5
2.15±0.05R
mounting holes
Conduit cap
Two, 4+0.15
dia. holes
Depth: 5
0
One-way Roller Arm Lever
(Vertical)
D4N-1@72 D4N-2@72
D4N-3@72 D4N-4@72
D4N-9@72 *
Operating
direction
12 dia. × 5
resin roller
30
OP
14.7
19R
19.5±0.2
11±0.2
11±0.2 12
10.2
22±0.2
31 max.
47±0.2
2.5
9±0.2
20±0.1
22±0.1
14.2
(31.5)
55
21.5
2.15±0.05R
mounting holes
Conduit cap
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D4N
Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)
Slow-action (1NC/1NO) (2NC/1NO)
Model
Operating characteristics
D4N-@131
D4N-@231
D4N-@B31
D4N-@D31
D4N-@132
D4N-@232
D4N-@B32
D4N-@D32
D4N-@162
D4N-@262
D4N-@B62
D4N-@D62
D4N-@172
D4N-@272
D4N-@B72
D4N-@D72
Operating force OF max. 6.5 N 6.5 N 5.0 N 5.0 N Note: Variation occurs in the simultaneity
of contact opening/closing
operations of 2NC, 2NC/1NO, and
3NC contacts. Check contact
operation.
*1.Only for snap-action models.
*2.Reference value.
*3.For safe use, always make sure that
the minimum values or greater are
provided.
Release force RF min. 1.5 N 1.5 N 0.8 N 0.8 N
Pretravel PT max. 2 mm 2 mm 4 mm 4 mm
Overtravel OT min. 4 mm 4 mm 5 mm 5 mm
Movement differential MD max. *1 1 mm 1 mm 1.5 mm 1.5 mm
Operating position OP
18.2
r
0.5 mm 28.6
r
0.8 mm
37 r0.8 mm 27 r0.8 mm
Total travel TT *2 (6 mm) (6 mm) (9 mm) (9 mm)
Direct opening travel DOT min. *3 3.2 mm 3.2 mm 5.8 mm 4.8 mm
Direct opening force DOF min. *3 20 N 20 N 20 N 20 N
Model
Operating characteristics
D4N-@A31
D4N-@C31
D4N-@E31
D4N-@F31
D4N-@A32
D4N-@C32
D4N-@E32
D4N-@F32
D4N-@A62
D4N-@C62
D4N-@E62
D4N-@F62
D4N-@A72
D4N-@C72
D4N-@E72
D4N-@F72
Operating force OF max. 6.5 N 6.5 N 5.0 N 5.0 N
*1.These PT values are possible when
the NC contacts are open (OFF).
*2.These PT values are possible when
the NO contacts are closed (ON).
*3.Only for MBB models.
*4.Reference values for MBB models.
*5.Only for MBB models.
*6.Reference value.
*7.For safe use, always make sure that
the minimum values or greater are
provided.
Release force RF min. 1.5 N 1.5 N 0.8 N 0.8 N
Pretravel PT max. *1 2 mm 2 mm 4 mm 4 mm
PT (2nd) *2 (2.9 mm) (2.9 mm) (5.2 mm) (4.3 mm)
PT max. *3 2.8 mm 2.8 mm 4 mm 4 mm
PT (2nd) *4 (1 mm) (1 mm) (1.5 mm) (1.5 mm)
Overtravel OT min. 4 mm 4 mm 5 mm 5 mm
Operating position OP
18.2
r
0.5 mm 28.6
r
0.8 mm
37 r0.8 mm 27 r0.8 mm
OP *5
17.4
r
0.5 mm
28 r0.8 mm 36 r0.8 mm
26.1
r
0.8 mm
Total travel TT *6 (6 mm) (6 mm) (9 mm) (9 mm)
Direct opening travel DOT min. *7 3.2 mm 3.2 mm 5.8 mm 4.8 mm
Direct opening force DOF min. *7 20 N 20 N 20 N 20 N
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D4N
1-conduit Models
Note: Unless otherwise specified, a tolerance of r0.4 mm applies to all dimensions.
* Refer to following diagrams for details on M12 connectors.
Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)
Slow-action (1NC/1NO) (2NC/1NO)
Model
Operating characteristics
D4N-@12H
D4N-@22H
D4N-@B2H
D4N-@D2H
D4N-@12G
D4N-@22G
D4N-@B2G
D4N-@D2G
*1
Operating force OF max. 4.5 N
Note: Variation occurs in the simultaneity of contact
opening/closing operations of 2NC, 2NC/1NO, and
3NC contacts. Check contact operation.
*1.The operating characteristics of these Switches were
measured with the roller lever set at 32 mm.
*2.Only for snap-action models.
*3.Reference value.
*4.For safe use, always make sure that the minimum values
or greater are provided.
Release force RF min. 0.4 N
Pretravel PT 18q to 27q
Overtravel OT min. 40q
Movement differential MD max. *2 14q
Operating position OP ---
Total travel TT *3 (80q)
Direct opening travel DOT min. *4 50q
Direct opening force DOF min. *4 20 N
Model
Operating characteristics
D4N-@A2H
D4N-@C2H
D4N-@E2H
D4N-@F2H
D4N-@A2G
D4N-@C2G
D4N-@E2G
D4N-@F2G
*1
Operating force OF max. 4.5 N
*1.The operating characteristics of these Switches were
measured with the roller lever set at 32 mm.
*2.This PT value is possible when the NC contacts are open
(OFF).
*3.This PT value is possible when the NO contacts are
closed (ON).
*4.Only for MBB models.
*5.Reference value for MBB models only.
*6.Reference value.
*7.For safe use, always make sure that the minimum values
or greater are provided.
Release force RF min. 0.4 N
Pretravel PT *2 18q to 27q
PT (2nd) *3 (44q)
PT *4 27.5q to 36.5q
PT (2nd) *5 (18q)
Overtravel OT min. 40q
Operating position OP ---
Total travel TT *6 (80q)
Direct opening travel DOT min. 50q
Direct opening force DOF min. *7 20 N
Adjustable Roller Lever, Form Lock
(with Metal Lever, Resin Roller)
D4N-1@2G D4N-2@2G
D4N-3@2G D4N-4@2G
D4N-9@2G * 17.5 dia. × 6.8
resin roller
Two, 4+0.15 dia. holes
Depth: 5
0
2.15±0.05R
mounting holes
Conduit cap
20.5 × 20.5
30
27.5
11
±0.2
21.5
22
±0.2
31 max.
55 47
±0.2
2.5
9
±0.2
20 to 66R
18
20
±0.1
22
±0.1
14.2
45
±1
39.5
±1
(31)
Adjustable Roller Lever, Form Lock
(with Metal Lever, Rubber Roller)
D4N-1@2H D4N-2@2H
D4N-3@2H D4N-4@2H
D4N-9@2H * 50 dia. ×8
rubber roller
Bearing
Stainless steel
lever
Two, 4+0.15 dia. holes
Depth: 5
0
20.5 ×20.5
30
27.5
11±0.2
21.5
22±0.2
31 max.
55 47±0.2
2.5
9±0.2
18
20±0.1
22±0.1
14.2
48.2±1
41.3±1
(29.2)
32 to 66R
2.15±0.05R
mounting holes
Conduit cap
1-conduit M12 Connector
D4N-9@@@
(14)
M12 × 1
14.2
30
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(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
1-conduit Models
Note: Unless otherwise specified, a tolerance of r0.4 mm applies to all dimensions.
* The usable range for stainless steel wires and resin rods is 35 mm max. from the end with a total travel of 70 mm max.
Slow-action (1NC/1NO) (2NC/1NO) (2NC) (3NC)
Note: Variation occurs in the simultaneity of contact opening/closing
operations of 2NC, 2NC/1NO, and 3NC contacts. Check
contact operation.
Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)
20.5 × 20.5
Two, 4+0.15 dia. holes
Depth: 5
0
Fork Lever Lock
(Right Operation)
D4N-1@RE D4N-2@RE
D4N-3@RE D4N-4@RE
2.15±0.05R
mounting
holes
30
27.5
11±0.2
47 max.
39.3±1
(27.2)
21.5
22±0.2
31 max.
55 47±0.2
2.5
9±0.2
26R
90°
18
20±0.1
22±0.1
14.2
Two, 17.5 dia.
×8 rubber
rollers
Conduit cap
Two, 4+0.15
dia. holes
Depth: 5
0
Fork Lever Lock
(Left Operation)
D4N-1@LE D4N-2@LE
D4N-3@LE D4N-4@LE
2.15±0.05R
mounting holes
Two, 17.5 dia. ×
8 rubber rollers
30
27.5
11±
0.2
39.3±
1
(27.2)
21.5
22±
0.2
31 max.
55
47±
0.2
2.5
9±
0.2
26R 90°
18
20±
0.1
22±
0.1
14.2
47 max.
20.5 × 20.5
Conduit cap
Two, 4
+0.15
dia. holes
Depth: 5
0
Cat Whisker
D4N-1@80 D4N-2@80
D4N-3@80 D4N-4@80
1.2-dia.
stainless
steel wire *
2.15±0.05R
mounting holes
30
(31.5)
11±
0.2
21.5
22±
0.2
31 max.
55 47±
0.2
2.5
9±
0.2
(50.1)
PT
143.1
20±
0.1
22±
0.1
14.2
20.5 × 20.5
Sealing cap
16.6 dia.
Conduit cap
Two, 4+0.15 dia. holes
Depth: 5
0
Plastic Rod
D4N-1@87 D4N-2@87
D4N-3@87 D4N-4@87
2.15±0.05R
mounting holes
30
(31.5)
11±0.2
22±0.2
31 max.
55
115
38
42
12±0.2
47±0.2
2.5
PT
20±0.1
22±0.1
14.2
21.5
9±0.2
Resin rod *
20.5 ×
20.5
Sealing cap 16.6 dia.
Conduit cap
Model
Operating characteristics D4N-@@RE D4N-@@LE
Force necessary to reverse
the direction of the lever:
max. 6.4 N 6.4 N
Movement until the lever
reverses 55r10q55r10q
Movement until switch
operation (NC) (6.5q
(MBB: 10q)
(6.5q
(MBB: 10q)
Movement until switch
operation (NO) (18.5q
(MBB: 5q)
(18.5q
(MBB: 5q)
Model
Operating characteristics D4N-@@80 D4N-@@87
Operating force OF max. 1.5 N 1.5 N
Pretravel PT max. 15q15q
http://www.ia.omron.com/ 13
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
2-conduit Models
Note: Unless otherwise specified, a tolerance of r0.4 mm applies to all dimensions.
Roller Lever (Resin Lever, Resin Roller)
D4N-5@20
D4N-6@20
D4N-8@20
17.5 dia. × 6.8
resin roller
Two, 4+0.15 dia. holes
Depth: 5
0
30
Cap
27.5
20.5
20.5 × 20.5
11±0.2
47±1
40±1
(27)
21.5
42±0.2 (3)
56 max.
47
39±0.2
25 dia.
2.5
5.4
9±0.2
26R
18
20±0.1
40±0.1
42
±0.1
22±0.1
14.2
Resin lever
2.15±0.05R
mounting
holes
Conduit
cap
Roller Lever (Metal Lever, Resin Roller)
D4N-5@22
D4N-6@22
D4N-8@22 17.5 dia. × 6.8
resin roller
Two, 4+0.15 dia. holes
Depth: 5
0
30
Cap
27.5
20.5
11±0.2
21.5
42±0.2 (3)
56 max.
47
25 dia.
2.5
5.4
9±0.2
18
20±0.1
40±0.1
42±0.1
22±0.1
14.2
26R
45±1
39.5±1
(31)
39±0.2
Metal lever 20.5 × 20.5
2.15±0.05R
mounting
holes
Conduit cap
Plunger
D4N-5@31
D4N-6@31
D4N-8@31
Two, 3±0.05
dia. holes
Two, 4+0.15 dia. holes
Depth: 5
0
30
Cap
20.5
42±0.2 (3)
56 max.
47
25 dia.
2.5
5.4
9±0.2
OP
20±0.1
40±0.1
42±0.1
22±0.1
14.2
(31.5)
21.5
11±0.2
25±0.1
12 dia.
39±0.2
6-dia. resin plunger
2.15±0.05R
mounting
holes
Conduit cap
Roller Plunger
D4N-5@32
D4N-6@32
D4N-8@32
9.5 dia. × 5
resin roller
Two, 4+0.15 dia. holes
Depth: 5
0
30
Cap
20.5
42±0.2 (3)
56 max.
47
25 dia.
2.5
5.4
9±0.2
OP 25.2
20±0.1
40±0.1
42±0.1
22±0.1
14.2
11±0.2
(31.5)
21.5
39±0.2
20.5 × 20.5
2.15±0.05R
mounting
holes
Conduit cap
Snap-action (1NC/1NO) (2NC), Slow-action (2NC)
(3NC)
Note: Variation occurs in the simultaneity of contact opening/closing
operations of 2NC, 2NC/1NO, and 3NC contacts. Check
contact operation.
*1.Only for snap-action models.
*2.Reference value.
*3.For safe use, always make sure that the minimum values or greater
are provided.
Model
Operating characteristics
D4N-
@
120
D4N-
@
220
D4N-
@
B20
D4N-
@
D20
D4N-
@
122
D4N-
@
222
D4N-
@
B22
D4N-
@
D22
D4N-@131
D4N-@231
D4N-@B31
D4N-@D31
D4N-
@
132
D4N-
@
232
D4N-
@
B32
D4N-
@
D32
Operating force
OF max.
5 N 5 N 6.5 N 6.5 N
Release force RF min. 0.5 N 0.5 N 1.5 N 1.5 N
Pretravel PT 18q to 27q18q to 27q2 mm 2 mm
Overtravel OT min. 40q40q4 mm 4 mm
Movement differential
MD max.
*1
14q14q1 mm 1 mm
Operating position OP --- --- 18
r0.5 mm
28.2
r0.8 mm
Total travel TT *2 (80q)(80q) (6 mm) (6 mm)
Direct opening travel
DOT min.
*3
50q50q3.2 mm 3.2 mm
Direct opening force
DOF min.
*3
20 N 20 N 20 N 20 N
Slow-action (1NC/1NO) (2NC/1NO)
*1.This PT value is possible when the NC contacts are open (OFF).
*2.This PT value is possible when the NO contacts are closed (ON).
*3.Only for MBB models.
*4.Reference value for MBB models.
*5.Only for MBB models.
*6.Reference value.
*7.For safe use, always make sure that the minimum values or
greater are provided.
Model
Operating characteristics
D4N-
@
A20
D4N-
@
C20
D4N-
@
E20
D4N-@F20
D4N-
@
A22
D4N-
@
C22
D4N-
@
E22
D4N-@F22
D4N-
@
A31
D4N-
@
C31
D4N-
@
E31
D4N-@F31
D4N-
@
A32
D4N-
@
C32
D4N-
@
E32
D4N-@F32
Operating force OF max. 5 N 5 N 6.5 N 6.5 N
Release force RF min. 0.5 N 0.5 N 1.5 N 1.5 N
Pretravel PT *1 18q to 27q18q to 27q2 mm 2 mm
PT (2nd)
*2
(44q)(44q) (2.9 mm) (2.9 mm)
PT *3 27.5q to
36.5q
27.5q to
36.5q2.8 mm 2.8 mm
PT (2nd)
*4
(18q)(18q) (1 mm) (1 mm)
Overtravel OT min. 40q40q4 mm 4 mm
Operating position
OP --- --- 18
r0.5 mm
28.2
r0.8 mm
OP *5 --- --- 17.4
r0.5 mm
28
r0.8 mm
Total travel TT *6 (80q)(80q) (6 mm) (6 mm)
Direct opening travel
DOT min.
*7
50q50q3.2 mm 3.2 mm
Direct opening force
DOF min.
*7
20 N 20 N 20 N 20 N
http://www.ia.omron.com/ 14
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
2-conduit Models
Note: Unless otherwise specified, a tolerance of r0.4 mm applies to all dimensions.
v
Two, 4+0.15 dia. holes
Depth: 5
0
One-way Roller Arm Lever
(Horizontal)
D4N-5@62
D4N-6@62
D4N-8@62
12 dia. x 5
resin roller
2.15±0.05R
mounting holes
30
Cap
20.5
21.5
42±0.2 (3)
56 max.
47
25 dia.
2.5
5.4
9±0.2
20±0.1
40±0.1
42±0.1
22±0.1
14.2
11±0.2
10.2
(31.5)
14.8
Operating direction
23.3
13.5
11±0.2
19.5±0.2
20R
OP
21.5
39±0.2
Conduit cap
Two, 4+0.15 dia. holes
Depth: 5
0
One-way Roller Arm Lever
(Vertical)
D4N-5@72
D4N-6@72
D4N-8@72
Operating
direction
12 dia. × 5
resin roller
30
Cap
20.5
21.5
42±0.2 (3)
56 max.
47
25 dia.
2.5
5.4
9±0.2
20±0.1
40±0.1
42±0.1
22±0.1
14.2
OP
14.7
19R
19.5±0.2
11±0.2 12 11±0.2
10.2
(31.5)
21.5
39±0.2
2.15±0.05R
mounting
holes
Conduit cap
Adjustable Roller Lever, Form Lock
(with Metal Lever, Resin Roller)
D4N-6@2G
D4N-8@2G 17.5 dia. × 6.8
resin roller
Two, 4+0.15 dia. holes
Depth: 5
0
30
Cap
27.5
20.5
11±0.2
21.5
42±0.2 (3)
56 max.
47
25 dia.
2.5
5.4
9±0.2
18
20±0.1
40±0.1
42±0.1
22±0.1
14.2
45±1
39.5±1
(31)
39±0.2
20 to 66RResin lever
2.15±0.05R
mounting holes
Conduit cap
20.5 × 20.5
Adjustable Roller Lever, Form Lock
(with Metal Lever, Rubber Roller)
D4N-6@2H
D4N-8@2H 50 dia. ×8
rubber roller
Bearing
Stainless
steel lever
Two, 4+0.15 dia. holes
Depth: 5
0
20.5 × 20.5
30
Cap
27.5
20.5
11±0.2
21.5
42±0.2 (3)
56 max.
47
25 dia.
2.5
5.4
9±0.2
18
20±0.1
40±0.1
42±0.1
22±0.1
14.2
48.2±1
41.3±1
(29.2)
39±0.2
32 to 66R
2.15±0.05R
mounting holes
Conduit cap
Snap-action (1NC/1NO) (2NC), Slow-action (2NC)
(3NC)
Note: Variation occurs in the simultaneity of contact opening/closing operations
of 2NC, 2NC/1NO, and 3NC contacts. Check contact operation.
*1. The operating characteristics of these Switches were measured with the roller
lever set at 30 mm.
*2. The operating characteristics of these Switches were measured with the roller
lever set at 31 mm.
*3. Only for snap-action models.
*4. Reference value.
*5. For safe use, always make sure that the minimum values or greater are
provided.
Model
Operating characteristics
D4N-@162
D4N-@262
D4N-
@
B62
D4N-
@
D62
D4N-@172
D4N-@272
D4N-
@
B72
D4N-
@
D72
D4N-@12G
D4N-@22G
D4N-@B2G
D4N-@D2G
*1
D4N-@12H
D4N-@22H
D4N-@B2H
D4N-@D2H
*2
Operating force
OF max. 5.0 N5.0 N4.5 N 4.5 N
Release force RF min. 0.8 N 0.8 N 0.4 N 0.4 N
Pretravel PT max. 4 mm 4 mm 18q to 27q18q to 27q
Overtravel
OT min.
5 mm 5 mm 40q40q
Movement differential
MD max. *3
1.5 mm 1.5 mm 14q14q
Operating position
OP
37
r
0.8 mm 27
r
0.8 mm
--- ---
Total travel TT *4 (9 mm) (9 mm) (70q)(70q)
Direct opening travel
DOT min. *5
5.8 mm 4.8 mm 50q50q
Direct opening force
DOF min. *5
20 N 20 N 20 N 20 N
Slow-action (1NC/1NO) (2NC/1NO)
*1. The operating characteristics of these Switches were measured with the roller
lever set at 30 mm.
*2. The operating characteristics of these Switches were measured with the roller
lever set at 31 mm.
*3. This PT value is possible when the NC contacts are open (OFF).
*4. This PT value is possible when the NO contacts are closed (ON).
*5. Only for MBB models.
*6. Reference value for MBB models only.
*7. Only for MBB models.
*8. Reference value.
*9. For safe use, always make sure that the minimum values or greater are provided.
Model
Operating characteristics
D4N-
@
A62
D4N-
@
C62
D4N-
@
E62
D4N-@F62
D4N-
@
A72
D4N-
@
C72
D4N-
@
E72
D4N-@F72
D4N-@A2G
D4N-@C2G
D4N-@E2G
D4N-@F2G
*1
D4N-@A2H
D4N-@C2H
D4N-@E2H
D4N-@F2H
*2
Operating force OF max.
5.0 N 5.0 N 4.5 N 4.5 N
Release force RF min. 0.8 N 0.8 N 0.4 N 0.4 N
Pretravel PT max.
*3 4 mm 4 mm 18q to 27q18q to 27q
PT (2nd)
*4
(5.2 mm) (4.3 mm) (44q)(44q)
PT max.
*5 4 mm 4 mm
27.5
q
to 36.5
q
27.5
q
to 36.5
q
PT (2nd)
*6
(1.5 mm) (1.5 mm) (18q)(18q)
Overtravel OT min. 5 mm 5 mm 40q40q
Operating position
OP
37
r
0.8 mm 27
r
0.8 mm
--- ---
OP *7
36
r
0.8 mm
26.1
r0.8 mm --- ---
Total travel TT *8 (9 mm) (9 mm) (70q)(70q)
Direct opening travel
DOT min. *9
5.8 mm 4.8 mm 50q50q
Direct opening force
DOF min. *9
20 N 20 N 20 N 20 N
http://www.ia.omron.com/ 15
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
2-conduit Models
Note: Unless otherwise specified, a tolerance of r0.4 mm applies to all dimensions.
* The usable range for stainless steel wires and resin rods is 35 mm max. from the end with a total travel of 70 mm max.
Slow-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)
Note: Variation occurs in the simultaneity of contact opening/closing
operations of 2NC, 2NC/1NO, and 3NC contacts. Check
contact operation.
Snap-action (1NC/1NO), Slow-action (2NC) (3NC)
Two, 4+0.15 dia. holes
Depth: 5
0
Fork Lever Lock
(Right Operation)
D4N-5@RE D4N-6@RE
D4N-7@RE D4N-8@RE
2.15±0.05R
mounting holes
30
Cap
27.5
20.5
11±0.2
21.5
42±0.2 (3)
56 max.
47
25 dia.
2.5
5.4
9±0.2
18
20±0.1
40±0.1
42±0.1
22±0.1
14.2
39.3±1
(27.2)
26R
90°
47 max.
39±0.2
Two, 17.5 dia. ×
8 rubber rollers
Conduit cap
20.5 × 20.5
Two, 4+0.15 dia. holes
Depth: 5
0
Fork Lever Lock
(Left Operation)
D4N-5@LE D4N-6@LE
D4N-7@LE D4N-8@LE
2.15±0.05R
mounting holes
Cap
Two, 17.5 dia. ×
8 rubber rollers
20.5 × 20.5
30
27.5
20.5
11
±0.2
21.5
14.2
39.3
±1
(27.2)
42
±0.2
(3)
56 max.
47
25 dia.
2.5
5.4
9
±0.2
18
20
±0.1
40
±0.1
42
±0.1
22
±0.1
90°
26R
47 max.
39
±0.2
Conduit cap
Two, 4+0.15 dia. holes
Depth: 5
0
Cat Whisker
D4N-5@80 D4N-6@80
D4N-7@80 D4N-8@80
1.2-dia.
stainless
steel wire *
2.15±0.05R
mounting holes
30
Cap
20.5
11±0.2
16.6 dia.
42±0.2 (3)
56 max.
47
25 dia.
2.5
20.5 × 20.5
5.4
9±0.2
20±0.1
40±0.1
42±0.1
22±0.1
14.2
(50.1)
PT
143.1 21.5
(31.5)
39±0.2
Sealing cap
Conduit cap
Two, 4+0.15 dia. holes
Depth: 5
0
Plastic Rod
D4N-5@87 D4N-6@87
D4N-7@87 D4N-8@87
2.15±0.05R
mounting
holes
30
Cap
20.5
11±0.2
16.6 dia.
42±0.2 (3)
56 max.
47
25 dia.
2.5
5.4
9±0.2
12±0.2
20±0.1
40±0.1
42±0.1
22±0.1
14.2
115
38
42
PT
(31.5)
21.5
39±0.2
Resin rod *
Sealing cap
Conduit cap
Model
Operating characteristics D4N-@@RE D4N-@@LE
Force necessary to reverse the
direction of the lever: max. 6.4 N 6.4 N
Movement until the lever
reverses 55r10q55r10q
Movement until switch operation
(NC)
(6.5q)(6.5q)
(MBB: 10q)
Movement until switch operation
(NO)
(18.5q)(18.5q)
(MBB: 5q)
Model
Operating characteristics D4N-@@80 D4N-@@87
Operating force OF max. 1.5 N 1.5 N
Pretravel PT max. 15q15q
http://www.ia.omron.com/ 16
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
Levers
Refer to the following for the angles and positions of the watchdogs (source: EN50047.)
Note: Unless otherwise specified, a tolerance of r0.4 mm applies to all dimensions.
Roller Lever
(D4N-@@20)
40
±2
15
±3
40
+1
0
55
50 max.
30°
20 min.
Dog
10 min.
Dog
5 min.
Adjustable Roller Lever, Form Lock
(with Metal Lever, Resin Roller)
(D4N-@@2G) (Reference Values)
40±2
45
29±7
5±2
30°
30°
55+1
0
35+1
0
65R 20R
90
40 min.
Dog
15 min.
10 min.
Adjustable Roller Lever, Form Lock
(with Metal Lever, Rubber Roller)
(D4N-@@2H) (Reference Values)
42±2
110
75
30±7
11±3
30°
70+1
0
55+1
0
65R 31R
45 min.
25 min.
10 min.
Sealed Plunger
(D4N-@@31)
12.5
0
−2.5
18
±0.5
Dog
15 min. 21 min.
Dog
Operating position
Roller Plunger
(D4N-@@32)
25+1
0
35
28±1
10±1.5
2.5
30°
12.5 0
−2.5
Dog
20 min.
10 min.
Operating position
25 min. 31 min.
One-way Roller Arm Lever
(Horizontal)
(D4N-@@62)
30 max.
Dog
20 min.
31
+1
0
10
±2
40
5 min.
10 min.
30°
12.5
0
−2.5
One-way Roller Arm Lever
(Vertical) (Reference Values)
(D4N-@@72)
30°
20 min.
31
41
±2
22
+1
0
5 min.
10 min.
12.5
0
−2.5
Dog
Fork Lever Lock
(Right Operation)
(D4N-@@RE)
60
36
55° to 60°
5 to 9R
Dog setting range
40
28
Mounting
surface
Fork Lever Lock
(Left Operation)
(D4N-@@LE)
60
36
55° to 60°
5 to 9R
Dog setting range
40
28
Mounting
surface
http://www.ia.omron.com/ 17
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
Safety Precautions
Refer to the “Precautions for All Switches” and “Precautions for All Safety Limit Switches”.
!CAUTION
xDo not use the Switch submerged in oil or water, or in locations
continuously subject to splashes of oil or water. Doing so may
result in oil or water entering the Switch interior. (The IP67 degree
of protection specification for the Switch refers to water penetration
while the Switch is submersed in water for a specified period of
time.)
xAlways attach the cover after completing wiring and before using
the Switch. Also, do not turn ON the Switch with the cover open.
Doing so may result in electric shock.
xDo not switch circuits for two or more standard loads (250 VAC,
3 A) at the same time. Doing so may adversely affect insulation
performance.
The Switch contacts can be used with either standard loads or
microloads. Once the contacts have been used to switch a load,
however, they cannot be used to switch smaller loads. The contact
surfaces will become rough once they have been used and contact
reliability for smaller loads may be reduced.
Mounting Method
Appropriate Tightening Torque
Tighten each of the screws to the specified torque. Loose screws may
result in malfunction of the Switch within a short time.
Switch Mounting
xMount the Switch using M4 screws and washers and tighten the
screws to the specified torque.
xFor safety, use screws that cannot be easily removed, or use an
equivalent measure to ensure that the Switch is secure.
xAs shown below, two studs with a maximum height of 4.8 mm and
a diameter of 4 mm can be provided, the studs inserted into the
holes on the bottom of the Switch, and the Switch secured at four
locations to increase the mounting strength.
Switch Mounting Holes
xMake sure that the dog contacts the actuator at a right angle.
Applying a load to the switch actuator (roller) on a slant may result
in deformation or damage of the actuator or rotary shaft.
Electric shock may occasionally occur.
Do not use metal connectors or metal conduits.
Precautions for Safe Use
Precautions for Correct Use
1Terminal screw 0.6 to 0.8 N·m
2Cover mounting screw 0.5 to 0.7 N·m
3Head mounting screw 0.5 to 0.6 N·m
4Lever mounting screw 1.6 to 1.8 N·m
5Body mounting screw 0.5 to 0.7 N·m
6Connector, M12 adaptor 1.8 to 2.2 N·m (except 1/2-14NPT)
1.4 to 1.8 N·m (for 1/2-14NPT)
7Cap screw 1.3 to 1.7 N·m
7
6
3
4
5
1
2
One-conduit Type Two-conduit Type
0.05
0.15
2.5
±0.1
22
±0.1
47
±0.1
20
±0.1
22
±0.1
Two, M4
−0.15
4−0.05 dia.
Height: 4.8 max.
42
±0.1
39
±0.1
20
±0.1
22
±0.1
40
±0.1
42
±0.1
2.5
±0.1
5.35
±0.1
Two, M4
−0.15
4−0.05 dia.
Height: 4.8 max.
Dog
Dog
CorrectIncorrect
http://www.ia.omron.com/ 18
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
Wiring
Wiring
xWhen connecting to the terminals via insulating tube and M3.5
crimp terminals, arrange the crimp terminals as shown below so
that they do not rise up onto the case or the cover.
Applicable lead wire size: AWG20 to AWG18 (0.5 to 0.75 mm2).
Use lead wires of an appropriate length, as shown below. Not
doing so may result in excess length causing the cover to rise and
not fit properly.
One-conduit Type (3 Poles)
Two-conduit Type (3 Poles)
xDo not push crimp terminals into gaps in the case interior. Doing so
may cause damage or deformation of the case.
xUse crimp terminals not more than 0.5 mm in thickness. Otherwise,
they will interfere with other components inside the case.
[Reference] The crimp terminals shown below are not more than
0.5 mm thick.
Contact Arrangement
xThe contact arrangements are shown below.
Screw Terminal Type
Connector Type
xApplicable socket: XS2F (OMRON).
xRefer to the Connector Catalog for details on socket pin numbers
and lead wire colors.
Socket Tightening (Connector Type)
xTurn the socket connector screws by hand and tighten until no
space remains between the socket and the plug.
xMake sure that the socket connector is tightened securely.
Otherwise, the rated degree of protection (IP67) may not be
maintained and vibration may loosen the socket connector.
Conduit Opening
xConnect a recommended connector to the opening of the conduit
and tighten the connector to the specified torque. The case may be
damaged if an excessive tightening torque is applied.
xWhen using 1/2-14NPT, wind sealing tape around the joint
between the connector and conduit opening so that the enclosure
will conform to IP67.
xUse a cable with a suitable diameter for the connector.
xAttach and tighten a conduit cap to the unused conduit opening
when wiring. Tighten the conduit cap to the specified torque. The
conduit cap is provided with the Switch (2-conduit types).
Changing the Lever
The lever mounting screws can be used to set the lever position to
any position in a 360q angle at 7.5q increments. Grooves are incised
on the lever and rotary shaft that engage to prevent the lever from
slipping against the rotary shaft. The screws on adjustable roller lever
models can also loosened to change the length of the lever.
Remove the screws from the front of the lever before mounting the
lever in reverse (front/back), and set the level so that operation will be
completed before exceeding a range of 180q on the horizontal.
Manufacturer Type
J.S.T. Mfg. Co. FN0.5-3.7 (F Type)
N0.5-3.7 (Straight Type)
2221
3433
12
11
A
A
C
E
B
DF
C
E
B
D
F28 mm
Tolerance ±2 mm
33 mm
42 mm
2221
3433
12
11
A
C
E
B
D
F
ACE
BDF
28 mm
Tolerance ±2 mm
Left hand
42 mm
ACE
BDF
28 mm
Tolerance ±2 mm
Right hand
42 mm
L
l F
B
D dia.
dz dia.
Correct Incorrect
Terminal screw
Crimp terminal
t: 0.5 mm
dz dia.: 3.7 mm
D dia.: 2.9 mm
B: 6.6 mm
L: 19 mm
F: 7.7 mm
I: 8.0 mm
14
32
13
31
D4N-@D@@ (3NC)
11
21
12
22
31 32
D4N-@B@@ (2NC)
D4N-@2@@ (2NC (SNAP))
11
31
12
32
D4N-@C@@ (2NC/1NO)
D4N-@F@@ (2NC/1NO (MBB))
D4N-@A@@ (1NC/1NO)
D4N-@E@@ (1NC/1NO (MBB))
33 34
11
21
12
22
11
33
12
34
D4N-@1@@ (1NC/1NO (SNAP))
14 (4)
32 (2)
(3) 13
(1) 31
1
3
24
Pin No. (Terminal No.)
D4N-9B@@ (2NC)
D4N-92@@ (2NC (SNAP))
D4N-9A@@ (1NC/1NO)
D4N-9E@@ (1NC/1NO (MBB))
(1) 11
(3) 31
12 (2)
32 (4)
(1) 11
(3) 33
12 (2)
34 (4)
D4N-91@@ (1NC/1NO (SNAP))
http://www.ia.omron.com/ 19
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
Recommended Connectors
Use connectors with screws not exceeding 9 mm, otherwise the
screws will protrude into the case interior, interfering with other
components in the case.
The connectors listed in the following table have connectors with
thread sections not exceeding 9 mm.
Use the recommended connectors to ensure conformance to IP67.
Use LAPP connectors together with seal packing (JPK-16, GP-13.5,
or GPM20), and tighten to the specified tightening torque. Seal
packing is sold separately.
xLAPP is a German manufacturer.
xBefore using a 2-conduit 1/2-14NPT type, attach the provided
changing adaptor to the Switch and then connect the
recommended connector.
Others
xWhen attaching a cover, be sure that the seal rubber is in place and
that there is no foreign material present. If the cover is attached
with the seal rubber out of place or if foreign material is stuck to the
rubber, a proper seal will not be obtained.
xDo not use any screws to connect the cover other than the
specified ones. The seal characteristics may be reduced.
xMake sure that foreign particles do not enter the head when
removing the screws from the four corners to change the head
position in any of the four directions.
xUse the following recommended countermeasures to prevent
telegraphing when using adjustable or long levers.
1. Make the rear edge of the dog smooth with an angle of 15q to
30qor make it in the shape of a quadratic curve.
2. Design the circuit so that no error signal will be generated.
Size Manufacturer Model Applicable cable
diameter
G1/2 LAPP ST-PF1/2
5380-1002 6.0 to 12.0 mm
Pg13.5 LAPP ST-13.5
5301-5030 6.0 to 12.0 mm
M20 LAPP ST-M20 u 1.5
5311-1020 7.0 to 13.0 mm
1/2-14NPT LAPP ST-NPT1/2
5301-6030 6.0 to 12.0 mm
http://www.ia.omron.com/ 20
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
Production Discontinuation
Following the release of the D4N, production of the D4D-N was discontinued.
Date of Production Discontinuation
Production of the D4D-N Series was discontinued as of the end of
March 2006.
Recommended Substitute Product
Sales of the D4N series commenced in January 2004.
Product Substitution
1. Dimensions
The D4D-N and D4N use the same mounting method, and
mounting hole. The multi-contact structure and the extra 4 mm in
length, however, are different.
2. Terminal Numbers
For the 2-contact slow-action model, the terminals 21, 22, 23, and
24 on the D4D-N are 31, 32, 33, and 34 on the D4N.
3. Recommended Terminals
If the recommended terminals are not used, the Switch may not be
compatible. Make sure that the Switch is compatible with the
terminals.
Comparison with Discontinued Products
Dimensions (Unit: mm)
Item Model D4N
Switch color Very similar
Dimensions Very similar
Wiring/connection Significantly different
Mounting method Completely compatible
Ratings/performance Very similar
Operating characteristics Very similar
Operating method Completely compatible
Discontinued Product (1-conduit Plunger-type D4D-N) Recommended Substitute Product (1-conduit Plunger-type D4N)
Discontinued product (2-conduit Plunger-type D4D-N) Recommended Substitute Product (2-conduit Plunger-type D4N)
25 dia. ±0.1
Two, 3 ±0.05 dia. holes
12 dia.
6-dia. resin plunger
0
Two, 4+0.15 dia. holes
depth: 5
2.15±0.05R
mounting holes
31 max.
OP
30
(31.5)
21.5
25
±0.1
12 dia. 11
±0.2
22
±0.2
31 max.
55 47
±0.2
2.5
9
±0.2
OP
20
±0.1
22
±0.1
14.2
2.15±0.05R
mounting holes
0
Two, 4+0.15 dia. holes
depth: 5
Two, 3 ±0.05 dia.
holes
6-dia. resin
plunger
Conduit cap
Two, 3 ±0.05 dia. holes
depth: 6
12 dia.
6 dia.
2.15±0.05R
mounting holes
56 max.
25 dia.
Cap
0
Two, 4+0.15 dia. holes
depth: 5
OP
30
Cap
20.5
42±
0.2
(3)
56 max.
47
25 dia.
2.5
5.4
9±
0.2
OP
20±
0.1
40±
0.1
42±
0.1
22±
0.1
14.2
(31.5)
21.5
11±
0.2
25±
0.1
12 dia.
39±
0.2
2.15±0.05R
mounting holes
0
Two, 4+0.15 dia. holes
depth: 5
Two, 3 ±0.05
dia. holes
6-dia. resin plunger
Conduit cap
http://www.ia.omron.com/ 21
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
List of Recommended Substitute Products
: The actuator on the D4D-N is a non-safety type. The D4N is recommended for safety applications (form lock type). Be sure to mount it
correctly.
: M screws are recommended to comply with European standards. Therefore, the M20 type is recommended as a substitute when the Pg13.5
conduit-type is not available in a D4N model.
Safety Limit Switches
Discontinued
product Recommended
substitute product Discontinued
product Recommended
substitute product Discontinued
product Recommended
substitute product
D4D-1120N D4N-1120 D4D-1520N D4N-1A20 D4D-1A20N D4N-1B20
D4D-2120N D4N-2120 D4D-2520N D4N-2A20 D4D-2A20N D4N-2B20
D4D-3120N D4N-3120 D4D-3520N D4N-3A20 D4D-3A20N D4N-3B20
D4D-5120N D4N-5120 D4D-5520N D4N-5A20 D4D-5A20N D4N-5B20
D4D-6120N D4N-6120 D4D-6520N D4N-6A20 D4D-6A20N D4N-6B20
D4D-1122N D4N-1122 D4D-1522N D4N-1A22 D4D-1A22N D4N-1B22
D4D-2122N D4N-2122 D4D-2522N D4N-2A22 D4D-2A22N D4N-2B22
D4D-3122N D4N-3122 D4D-3522N D4N-3A22 D4D-3A22N D4N-3B22
D4D-5122N D4N-5122 D4D-5522N D4N-5A22 D4D-5A22N D4N-5B22
D4D-6122N D4N-6122 D4D-6522N D4N-6A22 D4D-6A22N D4N-6B22
D4D-1125N D4N-1125 D4D-1525N D4N-1A25 D4D-1A25N D4N-1B25
D4D-2125N D4N-2125 D4D-2525N D4N-2A25 D4D-2A25N D4N-2B25
D4D-3125N D4N-3125 D4D-3525N D4N-3A25 D4D-3A25N D4N-3B25
D4D-1131N D4N-1131 D4D-1531N D4N-1A31 D4D-1A31N D4N-1B31
D4D-2131N D4N-2131 D4D-2531N D4N-2A31 D4D-2A31N D4N-2B31
D4D-3131N D4N-3131 D4D-3531N D4N-3A31 D4D-3A31N D4N-3B31
D4D-5131N D4N-5131 D4D-5531N D4N-5A31 D4D-5A31N D4N-5B31
D4D-6131N D4N-6131 D4D-6531N D4N-6A31 D4D-6A31N D4N-6B31
D4D-1132N D4N-1132 D4D-1532N D4N-1A32 D4D-1A32N D4N-1B32
D4D-2132N D4N-2132 D4D-2532N D4N-2A32 D4D-2A32N D4N-2B32
D4D-3132N D4N-3132 D4D-3532N D4N-3A32 D4D-3A32N D4N-3B32
D4D-5132N D4N-5132 D4D-5532N D4N-5A32 D4D-5A32N D4N-5B32
D4D-6132N D4N-6132 D4D-6532N D4N-6A32 D4D-6A32N D4N-6B32
D4D-1162N D4N-1162 D4D-1562N D4N-1A62 D4D-1A62N D4N-1B62
D4D-2162N D4N-2162 D4D-2562N D4N-2A62 D4D-2A62N D4N-2B62
D4D-3162N D4N-3162 D4D-3562N D4N-3A62 D4D-3A62N D4N-3B62
D4D-5162N D4N-5162 D4D-5562N D4N-5A62 D4D-5A62N D4N-5B62
D4D-6162N D4N-6162 D4D-6562N D4N-6A62 D4D-6A62N D4N-6B62
D4D-1172N D4N-1172 D4D-1572N D4N-1A72 D4D-1A72N D4N-1B72
D4D-2172N D4N-2172 D4D-2572N D4N-2A72 D4D-2A72N D4N-2B72
D4D-3172N D4N-3172 D4D-3572N D4N-3A72 D4D-3A72N D4N-3B72
D4D-5172N D4N-5172 D4D-5572N D4N-5A72 D4D-5A72N D4N-5B72
D4D-6172N D4N-6172 D4D-6572N D4N-6A72 D4D-6A72N D4N-6B72
D4D-112HN D4N-112H D4D-152HN D4N-1A2H D4D-1A2HN D4N-1B2H
D4D-212HN D4N-212H D4D-252HN D4N-2A2H D4D-2A2HN D4N-2B2H
D4D-312HN D4N-312H D4D-352HN D4N-3A2H D4D-3A2HN D4N-3B2H
http://www.ia.omron.com/ 22
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
D4N
General-purpose Limit Switches
Discontinued
product Recommended
substitute product Discontinued
product Recommended
substitute product Discontinued
product Recommended
substitute product
D4D-1121N D4N-112G D4D-15REN D4N-1ARE D4D-1AREN D4N-1BRE
D4D-2121N D4N-212G D4D-25REN D4N-2ARE D4D-2AREN D4N-2BRE
D4D-3121N D4N-312G D4D-35REN D4N-3ARE D4D-3AREN D4N-3BRE
D4D-5121N D4N-512G D4D-55REN D4N-5ARE D4D-5AREN D4N-5BRE
D4D-6121N D4N-612G D4D-65REN D4N-6ARE D4D-6AREN D4N-6BRE
D4D-1127N D4N-112H D4D-15LEN D4N-1ALE D4D-1ALEN D4N-1BLE
D4D-2127N D4N-212H D4D-25LEN D4N-2ALE D4D-2ALEN D4N-2BLE
D4D-3127N D4N-312H D4D-35LEN D4N-3ALE D4D-3ALEN D4N-3BLE
D4D-5127N D4N-512H D4D-55LEN D4N-5ALE D4D-5ALEN D4N-5BLE
D4D-6127N D4N-612H D4D-65LEN D4N-6ALE D4D-6ALEN D4N-6BLE
D4D-1180N D4N-4180 D4D-1521N D4N-1A2G D4D-1A21N D4N-1B2G
D4D-2180N D4N-2180 D4D-2521N D4N-2A2G D4D-2A21N D4N-2B2G
D4D-3180N D4N-3180 D4D-3521N D4N-3A2G D4D-3A21N D4N-3B2G
D4D-5180N D4N-8180 D4D-5521N D4N-5A2G D4D-5A21N D4N-5B2G
D4D-6180N D4N-6180 D4D-6521N D4N-6A2G D4D-6A21N D4N-6B2G
D4D-1187N D4N-4187 D4D-1527N D4N-1A2H D4D-1A27N D4N-1B2H
D4D-2187N D4N-2187 D4D-2527N D4N-2A2H D4D-2A27N D4N-2B2H
D4D-3187N D4N-3187 D4D-3527N D4N-3A2H D4D-3A27N D4N-3B2H
D4D-5187N D4N-8187 D4D-5527N D4N-5A2H D4D-5A27N D4N-5B2H
D4D-6187N D4N-6187 D4D-6527N D4N-6A2H D4D-6A27N D4N-6B2H
D4D-1A80N D4N-4B80
D4D-2A80N D4N-2B80
D4D-3A80N D4N-3B80
D4D-5A80N D4N-8B80
D4D-6A80N D4N-6B80
D4D-1A87N D4N-4B87
D4D-2A87N D4N-2B87
D4D-3A87N D4N-3B87
D4D-5A87N D4N-8B87
D4D-6A87N D4N-6B87
http://www.ia.omron.com/ 23
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
Precautions for All Safety Limit Switches
Note: Refer to the “Safety Precautions” section for each Switch for specific precautions applicable to each Switch.
xDo not use the Switch in atmospheres containing explosive or
flammable gases.
xAlthough the switch box is protected from dust or water
penetration, the head is not protected from minute foreign matter
or water penetration. Ensure that minute foreign matter and water
do not penetrate the head. Failure to do so may result in
accelerated wear, Switch damage, or malfunctioning.
xThe durability of the Switch varies considerably depending on the
switching conditions. Always confirm the usage conditions by using
the Switch in an actual application, and use the Switch only for the
number of switching operations that its performance allows.
xDo not use the Switch as a stopper.
xDo not use the Switch in a startup circuit. Use it instead for a safety
confirmation signal.
xCheck the Switches before use and inspect regularly, replacing
them when necessary. If a Switch is kept pressed for an extended
period of time, the components may deteriorate quickly, and the
Switch may not release.
xTo protect the Switch from damage due to short-circuits, be sure to
connect a quick-response fuse with a breaking current 1.5 to 2
times larger than the rated current in series with the Switch.
When complying with EN certified ratings, use a 10 A IEC 60269-
compliant gI or gG fuse.
xDo not drop the Switch. Doing so may prevent it from functioning
to its full capacity.
xDo not disassemble or modify the Switch. Doing so may prevent it
from operating correctly.
Mechanical Characteristics
Operating Force, Stroke, and Contact Characteristics
xThe following graph indicates the relationship between operating
force and stroke or stroke and contact force. In order to operate the
Limit Switch with high reliability, it is necessary to use the Limit
Switch within an appropriate contact force range. If the Limit Switch
is used in the normally closed condition, the dog must be installed
so that the actuator will return to the FP when the actuator is
actuated by the object. If the Limit Switch is used in the normally
open condition, the actuator must be pressed to 80% to 100% of
the OT (i.e., 60% to 80% of the TT) and any slight fluctuation must
be absorbed by the actuator.
xIf the full stroke is set close to the OP or RP, contact instability may
result. If the full stroke is set to the TTP, the actuator or switch may
become damaged due to the inertia of the dog. In that case, adjust
the stroke with the mounting panel or the dog. Refer to page C-2,
Dog Design, page C-3, Stroke Settings vs. Dog Movement
Distance, and page C-3, Dog Surface for details.
xThe following graph shows an example of changes in contact force
according to the stroke. The contact force near the OP or RP is
unstable, and the Limit Switch cannot maintain high reliability.
Furthermore, the Limit Switch cannot withstand strong vibration or
shock.
xIf the Limit Switch is used so that the actuator is constantly
pressed, it will fail quickly and reset faults may occur. Inspect the
Limit Switch periodically and replace it as required.
Operation
xCarefully determine the proper cam or dog so that the actuator will
not abruptly snap back, thus causing shock. In order to operate the
Limit Switch at a comparatively high speed, use a cam or dog with
a long enough stroke that keeps the Limit Switch turned ON for a
sufficient time so that the relay or valve will be sufficiently
energized.
xThe operating method, the shape of the dog or cam, the operating
frequency, and the travel after operation have a large influence on
the durability and operating accuracy of the Limit Switch. The cam
must be smooth in shape.
xAppropriate force must be imposed on the actuator by the cam or
another object in both rotary operation and linear operation.
If the object touches the lever as shown below, the operating
position will not be stable.
Precautions for Safe Use
Precautions for Correct Use
Operating force
Contact force
FP
Changes to opposite side
Changes to opposite side
OTP
Stroke
Stroke
Snapped
back Abruptly
actuated
Incorrect Correct
Snapped
back Abruptly
actuated
Incorrect Correct
Dog Dog
Incorrect Correct
http://www.ia.omron.com/ C-1
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
Precautions for All Safety Limit Switches
xUnbalanced force must not be imposed on the actuator. Otherwise,
wear and tear on the actuator may result.
xMake sure that the actuator does not exceed the OT (overtravel)
range, otherwise the Limit Switch may malfunction. When
mounting the Limit Switch, be sure to adjust the Limit Switch
carefully while considering the whole movement of the actuator.
xThe Limit Switch may soon malfunction if the OT is excessive.
Therefore, adjustments and careful consideration of the position of
the Limit Switch and the expected OT of the actuator are
necessary when mounting the Limit Switch.
xBe sure to use the Limit Switch according to the characteristics of
the actuator.
If a roller arm lever actuator is used, do not attempt to actuate the
Limit Switch in the direction shown below.
xDo not modify the actuator to change the OP.
xIn the case of a long actuator of an adjustable roller lever type, the
following countermeasures against lever shaking are
recommended.
1. Make the rear edge of the object smooth with an angle of 15q to 30q
or make it in the shape of a quadratic curve.
2. Design the circuit so that no error signal will be generated.
3. Use or set a switch that is actuated in one direction only.
(Also, set the switch for operation in one direction only.)
Operating Environment
xThese Switches are for indoor applications.
The Switches may fail if they are used outdoors.
xDo not use the Switch in locations where toxic gases, such as H2S,
SO2, NH3, HNO3, and Cl2, may be present, or in locations that are
subject to high temperatures or humidity. Doing so may damage
the Switch due to contact failure or corrosion.
xDo not use the Switches in the following locations.
·Locations subject to severe temperature changes
·Locations subject to high temperatures or condensation
·Locations subject to severe vibration
·Locations where the interior of the Protective Door may come into
direct contact with cutting chips, metal filings, oil, or chemicals
·Locations where the Switch may come into contact with thinner or
detergents
·Locations where explosive or flammable gases are present
Switch Contacts
Switch contacts can be used with both standard loads and
microloads, but once a contact has been used to switch a standard
load, it cannot be used for a load of a smaller capacity.
Doing so may result in roughening of the contact surface and contact
reliability may be lost.
Storing Switches
Do not store the Switch in locations where toxic gases, such as H2S,
SO2, NH3, HNO3, and Cl2, may be present, or in locations that are
subject to, excessive dirt, excessive dust, high temperature, or high
humidity.
Other Precautions
xWhen attaching a cover, be sure that the seal rubber is in place and
that there is no foreign material present. If the cover is attached
with the seal rubber out of place or if foreign material is stuck to the
rubber, a proper seal will not be obtained.
xPerform maintenance inspections periodically.
xUse the Switch with a load current that does not exceed the rated
current.
xDo not use any screws to connect the cover other than the
specified ones. The seal characteristics may be reduced.
Dog Design
Operating Speed, Dog Angle, and Relationship with
Actuator
Before designing a dog, carefully consider the operating speed and
angle of the dog and their relationship with the shape of the actuator.
The optimum operating speed (V) of a standard dog at an angle of 30q
to 45q is 0.5 m/s maximum.
Roller Lever Models
1. Non-overtravel Dog
Dog Dog
Incorrect Correct
Roller Roller
Dog
Install a stopper.
PT (Pretravel)
FP (Free position)
OP (Operating position)
OT (Overtravel)
80% of
rated OT 100% of
rated OT
TTP (Total travel position)
Distance to the optimum
setting range.
Optimum setting
range
Reference line
Correct
Stopper
Incorrect
Dog speed: 0.5 m/s max. (Standard Speed)
IV max. (m/s) y
30q0.4
0.8 (TT)
80% of totaltravel
45q0.25
60q0.1
60q to 90q0.05 (low speed)
Lever set vertically
φ
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(c)Copyright OMRON Corporation 2007 All Rights Reserved.
Precautions for All Safety Limit Switches
Note: The above y values indicate the ratio ranges based on TT (total
travel). Therefore, the optimum pressing distance of the dog is
between 50% and 80% (or 50% and 70%).
2. Overtravel Dog
If the speed of the overtravel dog is comparatively high, make the rear
edge of the object smooth at an angle of 15q to 30q or make it in the
shape of a quadratic curve. Then lever shaking will be reduced.
Note: The above y values indicate the ratio ranges based on TT (total
travel). Therefore, the optimum pressing distance of the dog is
between 50% and 80% (or 50% and 70%).
Plunger Models
If the dog overrides the actuator, the front and rear of the dog may be
the same in shape, provided that the dog is not designed to be
separated from the actuator abruptly.
Stroke Settings vs. Dog Movement Distance
xThe following provides information on stroke settings based on the
movement distance of the dog instead of the actuator angle.
The following is the optimum stroke of the Limit Switch.
Optimum stroke: PT + {Rated OT x (0.7 to 1.0)}
The angle converted from the above: T1 + T2
xThe movement distance of the dog based on the optimum stroke is
expressed by the following formula.
Movement distance of dog
x
The distance between the reference line and the bottom of the dog
based on the optimum stroke is expressed by the following formula.
Dog Surface
xThe surface of dog touching the actuator should be 6.3 S in quality
and hardened at approximately HV450.
For smooth operation of the actuator, apply molybdenum disulfide
grease to the actuator and the dog touching the actuator.
Others
xWhen using the Limit Switch with a long lever or long rod lever,
make sure that the lever is in the downward direction.
Dog speed: 0.5 m/s d V d 2 m/s (High Speed)
T I V max. (m/s) y
45q45q0.5 0.5 to 0.8 (TT)
50q40q0.6
60q to 55q30q to 35q1.3 0.5 to 0.7 (TT)
75q to 65q15q to 25q2
Dog speed: 0.5 m/s max.
IV max. (m/s) y
30q0.4
0.8 (TT)
80% of total travel
45q0.25
60q0.1
60q to 90q0.05 (low speed)
Dog speed: 0.5 m/s min.
T I V max. (m/s) y
45q45q0.5 0.5 to 0.8 (TT)
50q40q0.6
60q to 55q30q to 35q1.3 0.5 to 0.7 (TT)
75q to 65q15q to 25q2
Roller Plunger
IV max. (m/s) y
30q0.25 0.6 to 0.8 (TT)
20q0.5 0.5 to 0.7 (TT)
Change lever set angle (θ) according
to dog angle (φ)
φ
Lever set vertically
φ
φ
60° max.
15 to 30°φ
φ
70% to 100% of rated OT
PT: Pretravel
OT: Overtravel
Dog
φ: Dog angle
θ: Optimum stroke angle
R: Actuator length
X: Dog movement distance
φ
φ
Dog
Reference line
Mounting hole
a: Distance between reference line and actuator fulcrum
b: R cosθ
r: Roller radius
Y: Distance between reference line and bottom of dog
Y
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(c)Copyright OMRON Corporation 2007 All Rights Reserved.
Precautions for All Safety Limit Switches
xWith a roller actuator, the dog must touch the actuator at a right
angle. The actuator or roller may deform or break if the dog
touches the actuator (roller) at an oblique angle.
xDo not remove the Head. The Switch may fail.
DogDog
Dog
Dog
Incorrect Correct
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(c)Copyright OMRON Corporation 2007 All Rights Reserved.
Precautions for All Switches
Refer to the Safety Precautions section for each Switch for specific precautions applicable to each Switch.
xIf the Switch is to be used as a switch in an emergency stop circuit
or in a safety circuit for preventing accidents resulting in injuries or
deaths, use a Switch with a direct opening mechanism, use the NC
contacts with a forced release mechanism, and set the Switch so
that it will operate in direct opening mode.
For safety, install the Switch using one-way rotational screws or
other similar means to prevent it from easily being removed.
Protect the Switch with an appropriate cover and post a warning
sign near the Switch to ensure safety.
xDo not perform wiring while power is being supplied. Wiring while
the power is being supplied may result in electric shock.
xKeep the electrical load below the rated value.
xBe sure to evaluate the Switch under actual working conditions
after installation.
xDo not touch the charged Switch terminals while the Switch has
carry current, otherwise an electric shock may be received.
xIf the Switch has a ground terminal, be sure to connect the ground
terminal to a ground wire.
xThe durability of the Switch greatly varies with switching
conditions. Before using the Switch, be sure to test the Switch
under actual conditions. Make sure that the number of switching
operations is within the permissible range.
If a deteriorated Switch is used continuously, insulation failures,
contact welding, contact failures, Switch damage, or Switch
burnout may result.
xMaintain an appropriate insulation distance between wires
connected to the Switch.
xSome types of load have a great difference between normal
current and inrush current. Make sure that the inrush current is
within the permissible value. The greater the inrush current in the
closed circuit is, the greater the contact abrasion or shift will be.
Consequently, contact welding, contact separation failures, or
insulation failures may result. Furthermore, the Switch may
become broken or damaged.
xThe user must not attempt to repair or maintain the Switch and
must contact the machine manufacturer for any repairs or
maintenance.
xDo not attempt to disassemble or modify the Switch. Doing so may
cause the Switch to malfunction.
xDo not drop the Switch. Doing so may result in the Switch not
performing to its full capability.
Wiring
Pay the utmost attention so that each terminal is wired correctly.
If the terminal is wired incorrectly, the Switch will not function.
Furthermore, not only will the Switch have a negative influence on the
external circuit, the Switch itself may become damaged or burnt.
Mounting
xDo not modify the Actuator, otherwise the operating characteristics
and performance of the Actuator will change.
xDo not enlarge the mounting holes of the Switch or modify the
Switch, otherwise insulation failures, housing damage, or human
accidents may result.
xDo not apply oil, grease, or other lubricants to the moving parts of
the Actuator, otherwise the Actuator may not operate correctly.
Furthermore, ingress of oil, grease, or other lubricants inside the
Switch may reduce sliding characteristic or cause failures in the
Switch.
xMount the Switch and secure it with the specified screws tightened
to the specified torque along with flat and spring washers.
xBe sure to wire the Switch so that the conduit opening is free of
metal powder or any other impurities.
xIf glue or bonding agent is applied, make sure that it does not
adhere to the movable parts or enter the Switch, otherwise the
Switch may not work correctly or cause contact failure. Some types
of glue or bonding agent may generate a gas that may have a
negative influence on the Switch. Pay the utmost attention when
selecting the glue or locking agent.
xSome models allow changes in the head direction. When changing
the head of such a model, make sure that the head is free of any
foreign substance. Tighten each screw of the head to the rated
torque.
xBe sure to take measures so that no foreign material, oil, or water
will enter the Switch through the conduit opening. Be sure to attach
a connector suitable for the cable thickness and tighten the
connector securely to the rated torque.
xDo not impose shock or vibration on the Actuator while it is fully
pressed. Otherwise, the Actuator will partially abrade and an
actuation failure may result.
Precautions for Safe Use
i (Inrush current)
io (Constant
current)
t
I
(A)
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(c)Copyright OMRON Corporation 2007 All Rights Reserved.
Precautions for All Switches
Switch Operation
xThe Switch in actual operation may cause accidents that cannot be
foreseen from the design stage. Therefore, the Switch must be
practically tested before actual use.
xWhen testing the Switch, be sure to apply the actual load
conditions together with the actual operating environment.
xAll the performance ratings in this catalog are provided under the
following conditions unless otherwise specified.
Inductive load:A minimum power factor of 0.4 (AC) or a
maximum time constant of 7 ms (DC)
Lamp load: An inrush current 10 times higher than the
normal current
Motor load: An inrush current 6 times higher than the
normal current
1. Ambient temperature: 5qC to 35qC
2. Ambient humidity: 40% to 70%.
Note: An inductive load causes a problem especially in DC circuitry.
Therefore, it is essential to know the time constants (L/R) of the
load.
Mechanical Conditions for Switch Selection
xAn Actuator suitable for the operating method must be selected.
Ask your OMRON representative for details.
xCheck the operating speed and switching frequency.
1. If the operating speed is extremely low, switching of the
movable contact will become unstable, thus resulting in
incorrect contact or contact welding.
2. If the operating speed is extremely high, the Switch may break
due to shock. If the switching frequency is high, the switching of
the contacts cannot keep up with the switching frequency. Make
sure that the switching frequency is within the rated switching
frequency.
xDo not impose excessive force on the Actuator, otherwise the
Actuator may become damaged or not operate correctly.
xMake sure that the stroke is set within the suitable range specified
for the model, or otherwise the Switch may break.
Electrical Characteristics for Switch Selection
Electrical Conditions
xThe switching load capacity of the Switch greatly varies between
AC and DC. Always be sure to apply the rated load. The control
capacity will drastically drop if it is a DC load. This is because a DC
load has no current zero-cross point, unlike an AC load. Therefore,
if an arc is generated, it may continue comparatively for a long
time. Furthermore, the current direction is always the same, which
results in contact relocation, whereby the contacts easily stick to
each other and do not separate when the surfaces of the contacts
are uneven.
xIf the load is inductive, counter-electromotive voltage will be
generated. The higher the voltage is, the higher the generated
energy will be, which will increase the abrasion of the contacts and
contact relocation load conditions. Be sure to use the Switch within
the rated conditions.
xIf the load is a minute voltage or current load, use a Switch
designed for minute loads. The reliability of silver-plated contacts,
which are used by standard Switches, will be insufficient if the load
is a minute voltage or current load.
Connections
xWith a Za contact form, do not contact a single Switch to two power
supplies that are different in polarity or type.
xDo not use a circuit that will short-circuit if a fault occurs, otherwise
the charged part may melt and break off.
xApplication of Switch to a Low-voltage, Low-current Electronic
Circuit.
1. If bouncing or chattering of the contacts results and causes
problems, take the following countermeasures.
(a) Insert an integral circuit.
(b) Suppress the generation of pulses from the contact bouncing
or chattering of the contacts so that it is less than the noise
margin of the load.
2. Conventional silver-plated contacts are not suitable for this
application, in which particularly high reliability is required. Use
gold-plated contacts, which are ideal for handling minute
voltage or current loads.
3. The contacts of the Switch used for an emergency stop must be
normally closed with a positive opening mechanism.
xTo protect the Switch from damage due to short-circuits, be sure to
connect in series a quick-response fuse with a breaking current 1.5
to 2 times larger than the rated current to the Switch. When
complying with EN certified ratings, use a 10-A IEC 60269-
compliant gI or gG fuse.
Precautions for Correct Use
Solenoids
(Approximately 10 to 20 times higher)
Incandescent
lamps (Approximately 10 to 15 times
higher)
Motors
(Approximately
5 to 10 times
higher) Relays
(Approxi-
mately 4 to 5
times higher)
t
I
(A)
Power Connection Examples
(Connection of Different Polarities)
Incorrect Power Connection
Example
(Connection of Different Power
Supplies)
There is a risk of AC and DC mixing.
NC
NO
NC
NO
Incorrect
Correct
Connect the load to the same polarities.
NC
NO
L
L
AC
DC
Incorrect
NC
NO
NC
NO
LL
Incorrect
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(c)Copyright OMRON Corporation 2007 All Rights Reserved.
Precautions for All Switches
Contact Protection Circuits
Using a contact protection circuit to increase the contact durability,
prevent noise, and suppress the generation of carbide or nitric acid.
Be sure to apply the contact protection circuit correctly, otherwise
adverse results may occur.
The following tables shows typical examples of contact protection
circuits. If the Switch is used in an excessively humid location for
switching a load that easily generates arcs, such as an inductive load,
the arcs may generate NOx, which will change into HNO3 when it
reacts with moisture. Consequently, the internal metal parts may
corrode and the Switch may fail. Be sure to select the best contact
protection circuit from the following table.
Typical Examples of Contact Protection Circuits
Do not use the following types of contact protection circuit.
Using Switches for Microloads
Contact failure may occur if a Switch for a general load is used to
switch a microload circuit. Use Switches in the ranges shown in the
diagram right. However, even when using microload models within
the operating range shown here, if inrush current occurs when the
contact is opened or closed, it may increase contact wear and so
decrease durability. Therefore, insert a contact protection circuit
where necessary. The minimum applicable load is the N-level
reference value. This value indicates the malfunction reference level
for the reliability level of 60% (O60) (JIS C5003). The equation, O60 =
0.5×106/operations indicates that the estimated malfunction rate is
less than 1/2,000,000 operations with a reliability level of 60%.
Circuit example
Applicable
current Features and remarks Element selection
AC DC
CR
*
(Yes) Yes
* Load impedance must be much smaller than
the CR circuit impedance when using the
Switch for an AC voltage.
Use the following as guides for C and R
values:
C: 1 to 0.5
P
F per 1 A of contact current (A)
R: 0.5 to 1
:
per 1 V of contact voltage (V)
These values depend on various factors,
including the load characteristics. Confirm
optimum values experimentally.
Capacitor C suppresses the discharge when
the contacts are opened, while the resistor
R limits the current applied when the
contacts are closed the next time.
Generally, use a capacitor with a low
dielectric strength of 200 to 300 V. For
applications in an AC circuit, use an AC
capacitor (with no polarity).
Yes Yes
The operating time of the contacts will be
increased if the load is a Relay or solenoid.
Connecting the CR circuit in parallel to the load
is effective when the power supply voltage is 24
or 48 V and in parallel to the contacts when the
power supply voltage is 100 to 200 V.
Diode No Yes
The energy stored in the coil reaches the coil as
current via the diode connected in parallel, and
is dissipated as Joule heat by the resistance of
the inductive load. This type of circuit increases
the release time more than the CR type.
Use a diode having a reverse breakdown
voltage of more than 10 times the circuit
voltage, and a forward current rating greater
than the load current.
Diode +
Zener diode No Yes
This circuit effectively shortens the reset time in
applications where the release time of a diode
circuit is too slow.
Use a Zener diode with a low breakdown
voltage.
Varistor Yes Yes
This circuit prevents a high voltage from being
applied across the contacts by using the
constant-voltage characteristic of a varistor.
This circuit also somewhat increases the reset
time. Connecting the varistor across the load is
effective when the supply voltage is 24 to 48 V,
and across the contacts when the supply
voltage is 100 to 200 V.
---
Power
supply
Inductive
load
CR
Power
supply
C
R
Inductive
load
Power
supply Inductive
load
Power
supply Inductive
load
Power
supply
Inductive
load
Although it is thought that switching a DC
inductive load is more difficult than a resistive
load, an appropriate contact protection circuit
can achieve almost the same characteristics.
Power
supply
CLoad
This circuit arrangement is very
effective for diminishing arcing at
the contacts when breaking the
circuit. However, since electrical
energy is stored in C (capacitor)
when the contacts are open, the
current from C flows into the
contacts when they close. This
may lead to contact welding.
Power
supply
CLoad
This circuit arrangement is very
useful for diminishing arcing at the
contacts when breaking the circuit.
However, since the charging current
to C flows into the contacts when
they are closed, contact welding
may occur.
Voltage (VDC)
30
24
12
5
01 10 100 1,000 Current (mA)0.1
1 mA
Operating
range for
standard
models
Operating range for
micro-load models
26 mA0.16 mA
800 mW5 mW
100 mA 160 mA
Unusable
range
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(c)Copyright OMRON Corporation 2007 All Rights Reserved.
Precautions for All Switches
Operating Environment
xThe Switches are designed for use indoors.
Using a Switch outdoors may cause it to malfunction.
xDo not use the Switch submerged in oil or water, or in locations
continuously subject to splashes of water. Doing so may result in
oil or water entering the Switch interior.
xConfirm suitability (applicability) in advance before using the
Switch where it would be subject to oil, water, chemicals, or
detergents. Contact with any of these may result in contact failure,
insulation failure, earth leakage faults, or burning.
xDo not use the Switch in the following locations:
• Locations subject to corrosive gases
• Locations subject to severe temperature changes
• Locations subject to high humidity, resulting in condensation
• Locations subject to severe vibration
• Locations subject to cutting chips, dust, or dirt
• Locations subject to high humidity or high temperature
xUse protective covers to protect Switches that are not specified as
waterproof or airtight whenever they are used in locations subject
to splattering or spraying oil or water, or to accumulation of dust or
dirt.
xBe sure to install the Switch so that the Switch is free from dust or
metal powder. The Actuator and the Switch casing must be
protected from the accumulation of dust or metal powder.
xDo not use the Switch in locations where the Switch is exposed to
steam or hot water at a temperature greater than 60qC.
xDo not use the Switch under temperatures or other environmental
conditions not within the specified ranges.
The rated permissible ambient temperature range varies with the
model. Refer to the Specifications in this catalog.
If the Switch is exposed to radical temperature changes, the
thermal shock may deform the Switch and the Switch may
malfunction.
xBe sure to protect the Switch with a cover if the Switch is in a
location where the Switch may be actuated by mistake or where
the Switch is likely cause an accident.
xMake sure to install the Switch in locations free of vibration or
shock. If vibration or shock is continuously imposed on the Switch,
contact failure, malfunction, or decrease in service life may be
caused by abrasive powder generated from the internal parts. If
excessive vibration or shock is imposed on the Switch, the
contacts may malfunction or become damaged.
xDo not use the Switch with silver-plated contacts for long periods if
the switching frequency of the Switch is comparatively low or the
load is minute. Otherwise, sulfuric film will be generated on the
contacts and contact failures may result. Use the Switch with
gold-plated contacts or use a Switch designed for minute loads
instead.
xDo not use the Switch in locations with corrosive gas, such as
sulfuric gas (H2S or SO2), ammonium gas (NH3), nitric gas (HNO3),
or chlorine gas (Cl2), or high temperature and humidity. Otherwise,
contact failure or corrosion damage may result.
xIf the Switch is used in locations with silicone gas, arc energy may
create silicon dioxide (SiO2) on the contacts and a contact failure
may result. If there is silicone oil, silicone sealant, or wire covered
with silicone close to the Switch, attach a contact protection circuit
to suppress the arcing of the Switch or eliminate the source of
silicone gas generation.
Regular Inspection and Replacement
xIf the Switch is normally closed with low switching frequency (e.g.,
once or less per day), a reset failure may result due to the
deterioration of the parts of the Switch. Regularly inspect the
Switch and make sure that the Switch is in good working order.
xIn addition to the mechanical durability or electrical durability of the
Switch described previously, the durability of the Switch may
decrease due to the deterioration of each part, especially rubber,
resin, and metal. Regularly inspect the Switch and replace any part
that has deteriorated to prevent accidents from occurring.
xIf the Switch is not turned ON and OFF for a long period of time,
contact reliability may be reduced due to contact oxidation.
Continuity failure may result in accidents (i.e., the switch may not
turn ON due to increased contact resistance.)
xBe sure to mount the Switch securely in a clean location to ensure
ease of inspection and replacement. The Switch with operation
indicator is available, which is ideal if the location is dark or does
not allow easy inspection or replacement.
Storage of Switch
xWhen storing the Switch, make sure that the location is free of
corrosive gas, such as H2S, SO2, NH3, HNO3, or Cl2, or dust and
does not have a high temperature or humidity.
xBe sure to inspect the Switch before use if it has been stored for
three months or more.
Incorrect Correct
Terminal box
Terminal box
Incorrect Correct
Incorrect Correct
Separate the
Switch
from heat
sources
Incorrect Correct
Prevent false operation
Difficult to inspect or install
The cover must be located
in the direction ensuring
ease of maintenance or
inspection.
Easy to inspect
Incorrect Correct
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Precautions for All Switches
Typical Problems, Probable Causes, and Remedies
Problem Probable cause Remedy
Mechanical
failure
1. The Actuator does not
operate.
2. The Actuator does not return.
3. The Actuator has been
deformed.
4. The Actuator is worn.
5. The Actuator has been
damaged.
The shape of the dog or cam is incorrect. xChange the design of the dog or cam
and smooth the contacting surface of
the cam.
xScrutinize the suitability of the
Actuator.
(Make sure that the Actuator does not
bounce.)
The contacting surface of the dog or cam is rough.
The Actuator in use is not suitable.
The operating direction of the Actuator is not
correct.
The operation speed is excessively high. xAttach a decelerating device or change
the mounting position of the Switch.
Excessive stroke. xChange the stroke.
The rubber or grease hardened due to low
temperature. xUse a cold-resistive Switch.
The accumulation of sludge, dust, or cuttings. xUse a drip-proof model or one with high
degree of protection.
xUse a protection cover and change the
solvent and materials.
Dissolution, expansion, or swelling damage to the
rubber parts of the driving mechanism.
There is a large deviation in
operating position
(with malfunctioning involved).
Damage to and wear and tear of the internal
movable spring. xRegularly inspect the Switch.
xUse a better quality Switch.
xTighten the mounting screws securely.
Use a mounting board.
Wear and tear of the internal mechanism.
The loosening of the mounting screws causing
the position to be unstable.
The terminal part wobbles (The
mold part has been deformed).
Overheating due to a long soldering time. xSolder the Switch quickly.
xChange the lead wire according to the
carry current and ratings.
The Switch has been connected to and pulled by
thick lead wires with excessive force.
High temperature or thermal shock resulted. xUse a temperature-resistive Switch or
change mounting positions.
Failures
related to
chemical or
physical
characteristics
Contact chattering.
Vibration or shock is beyond the rated value. xAttach an anti-vibration mechanism.
xAttach a rubber circuit to the solenoid.
xIncrease the operating speed (with an
accelerating mechanism).
Shock has been generated from a device other
than the Switch.
Too-slow operating speed.
Oil or water penetration.
The sealing part has not been tightened
sufficiently.
xUse a drip-proof or waterproof Switch.
xUse the correct connector and cable.
The wrong connector has been selected and does
not conform to the cable.
The wrong Switch has been selected.
The terminal part is not molded.
The Switch has been burnt or carbonated due to
the penetration of dust or oil.
Deterioration of the rubber part.
The expansion and dissolution of the rubber
caused by solvent or lubricating oil.
xUse an oil-resistant rubber or Teflon
bellows.
xUse a weather-resistant rubber or
protective cover.
xUse a Switch with a metal bellows
protective cover.
Cracks due to direct sunlight or ozone.
Damage to the rubber caused by scattered or
heated cuttings.
Corrosion (rusting or cracks).
The oxidation of metal parts resulted due to
corrosive solvent or lubricating oil.
xChange the lubricating oil or change
mounting positions.
xUse a crack-resistant material.
The Switch has been operated in a corrosive
environment, near the sea, or on board a ship.
The electrical deterioration of metal parts of the
Switch resulted due to the ionization of cooling
water or lubricating oil.
The cracking of alloyed copper due to rapid
changes in temperature.
Failures
related to
electric
characteristics
No actuation.
No current breakage.
Contact welding.
Inductive interference in the DC circuit. xAdd an erasing circuit.
Carbon generated on the surface of the contacts
due to switching operations.
xUse a Switch with a special alloy
contact or use a sealed Switch.
A short-circuit or contact welding due to contact
migration.
xReduce the switching frequency or use
a Switch with a large switching
capacity.
Contact welding due to an incorrectly connected
power source. xChange the circuit design.
Foreign materials or oil penetrated into the
contact area. xUse a protective box.
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(c)Copyright OMRON Corporation 2007 All Rights Reserved.
Precautions for All Switches
Other
xThe standard material for the Switch seal is nitrile rubber (NBR),
which has superior resistance to oil. Depending on the type of oil
or chemicals in the application environment, however, NBR may
deteriorate, e.g., swell or shrink. Confirm performance in advance.
xThe correct Switch must be selected for the load to ensure contact
reliability. Refer to Precautions for microloads in individual product
information for details.
xWire the leads as shown in the following diagram.
Correct Wiring
Incorrect Wiring
Correct
Crimp terminal
Crimped location
facing upLead
Terminal
screw
Terminal
screw
Terminal Terminal
Incorrect
Crimp terminal
Crimped location
facing downLead
Terminal
screw
Terminal
screw
Terminal Terminal
Too close to maintain
dielectric strength
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This catalog is a guide to help customers select the proper safety products. Observe the following items when choosing
products, select the right products for your devices or equipment, and develop a safety-related system to fully utilize product
functions.
Setting Up a Risk Assessment System
The items listed in this catalog must be used properly in terms of product location as well as product performance and
functionality. Part of the process of selecting and using these products should include the introduction and development of a
risk assessment system early in the design development stage to help identify potential dangers in your equipment that will
optimize safety product selection. A badly designed risk assessment system often results in poor choices when it comes to
safety products.
• Related International Standards:
ISO 14121 Principles of Risk Assessment
Safety Policy
When developing a safety system for the devices and equipment that use safety products, make every effort to understand
and conform to the entire series of international and industrial standards available, such as the examples given below.
• Related International Standards:
ISO 12100 Basic Concepts, General Principles for Design
IEC 61508 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems
Role of Safety Products
Safety products have functions and mechanisms that ensure safety as defined by standards. These functions and
mechanisms are designed to attain their full potential within safety-related systems. Make sure you fully understand all
functions and mechanisms, and use that understanding to develop systems that will ensure optimal usage.
• Related International Standards:
ISO 14119 Interlocking Devices Associated with Guards-Principles for Design and Selection
Installing Safety Products
Make sure that properly educated and trained engineers are selected to develop your safety-related system and to install
safety products in devices and equipment.
• Related International Standards:
ISO 12100 Basic Concepts, General Principles for Design
IEC 61508 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems
Observing Laws and Regulations
Safety products should conform to pertinent laws, regulations, and standards, but make sure that they are used in
accordance with the laws, regulations, and standards of the country where the devices and equipment incorporating these
products are distributed.
• Related International Standards:
IEC 60204 Electrical Equipment of Machines
Observing Usage Precautions
Carefully read the specifications and precautions listed in this catalog for your product as well as all items in the Operating
Manual packed with the product to learn usage procedures that will optimize your choice. Any deviation from precautions
will lead to unexpected device or equipment failure not anticipated by safety-related systems or fire originating from
equipment failure.
Transferring Devices and Equipment
When transferring devices and equipment, be sure to keep one copy of the Operating Manual and pack another copy with
the device or equipment so the person receiving it will have no problem operating it.
• Related International Standards:
ISO 12100 Basic Concepts, General Principles for Design
IEC 61508 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems
WARNING
http://www.ia.omron.com/ (c)Copyright OMRON Corporation 2007 All Rights Reserved.
2007.11
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/ (c)Copyright OMRON Corporation 2007 All Rights Reserved.
In the interest of product improvement, specifications are subject to change without notice.
Read and Understand This Catalog
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or
comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if
specifi ed) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR
FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE
HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS, OR COMMERCIAL
LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR
STRICT LIABILITY.
In no event shall responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS
OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT
SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's
application or use of the product.
At the customer's request, OMRON will provide applicable third party certifi cation documents identifying ratings and limitations of use that apply to the
products. This information by itself is not suffi cient for a complete determination of the suitability of the products in combination with the end product,
machine, system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible
uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:
• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles, safety
equipment, and installations subject to separate industry or government regulations.
• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE
SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT IS PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifi cations and accessories may be changed at any time based on improvements and other reasons.
It is our practice to change model numbers when published ratings or features are changed, or when signifi cant construction changes are made.
However, some specifi cations of the product may be changed without any notice. When in doubt, special model numbers may be assigned to fi x
or establish key specifi cations for your application on your request. Please consult with your OMRON representative at any time to confi rm actual
specifi cations of purchased product.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.
ERRORS AND OMISSIONS
The information in this catalog has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical,
typographical, or proofreading errors, or omissions.
PERFORMANCE DATA
Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent
the result of OMRON’s test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON
Warranty and Limitations of Liability.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
COPYRIGHT AND COPY PERMISSION
This catalog shall not be copied for sales or promotions without permission.
This catalog is protected by copyright and is intended solely for use in conjunction with the product. Please notify us before copying or reproducing this
catalog in any manner, for any other purpose. If copying or transmitting this catalog to another, please copy or transmit it in its entirety.
