SS Installation Manual Rev 4_4.indb Safety Light Curtains

User Manual: -SS-Safety-Light-Curtains-Installation-Manual

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Model SS
Safety Light Curtain
with Solid State Outputs
Installation Manual

DANGER indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
NOTICE is used to address practices not related to
physical injury.
Safety Instructions (or equivalent) signs indicate
specific safety-related instructions or procedures.

Rev. 4.4

Model SS
with Solid State Outputs
Installation Manual

Pinnacle Systems, Inc.
3715 Swenson Avenue
St. Charles, IL 60174

P/N: 28-132r4.4

Customer Service: 630-443-8542 (CST)
(Please have Model #, Serial #, and Software Rev # Available)
Sales and Marketing: 800-569-7697 (EST)

www.pinnaclesystems.com • sales@pinnaclesystems.com

•

service@pinnaclesystems.com

Proper Usage
The information disclosed herein
includes proprietary rights of the manufacturer. Neither
this document nor the information disclosed herein shall
be reproduced or transferred to other documents, used
or disclosed to others for manufacturing purposes, or for
any other purposes, except as specifically authorized in
writing by the manufacturer. If this manual is supplied
in connection with the sale or delivery of manufacturer’s
equipment, it is to be used solely for maintenance, repair,
or installation of such equipment.
The Model SS was manufactured in the United States.
The Installation Manual was printed in the United States.
You must read and fully understand the following
information pertaining to the proper use and limitations
of your Model SS:
• The Model SS must be installed by qualified
personnel only.
• The Model SS must NOT be used on full
revolution presses or any machine that cannot be
commanded to stop at any time.
• Never use Outputs 1 & 2 to control standard
relays, contactors, or valves!
• Always wire Outputs 1 & 2 to Safety Relays
(EDM option must be enabled), Safety
Relay Module (like the SSSR), or a “Control
Reliable” Safety PLC (like the Pinnacle Safety
Hub).
• The mechanical power press on which the Model
SS is installed must meet ANSI B11.1-2009 and
OSHA 1910.217 regulations. These include
inspection and maintenance procedures that
must be followed to comply with the regulations.
The manufacturer will NOT take responsibility for
improperly maintained machinery.
• Point of operation safeguarding is defined in
ANSI B11.19-2010. This regulation is used to
determine a safe distance to place your Model
SS. The manufacturer takes no responsibility
for injury as a result of improper safeguarding or
improper safe distances.

• Make sure that all maintenance people, machine
operators, die-setters, foreman, and supervisors
have read and understood this manual and all
procedures have been and will be followed.
• All procedures in this manual must be followed.
The manufacturer cannot take responsibility for
operation if all procedures and warnings in this
manual are not followed.

Warranty
Manufacturer warrants that this product will be free
from defects in material and workmanship for a period
of one year from the date of shipment thereof. Within
the warranty period, the manufacturer will repair or
replace (at our discretion) any product that is disclosed
as defective upon examination by the manufacturer and
is returned with shipping charges prepaid. This warranty
will not apply to any product that has been subjected to
misuse, negligence, accident, restriction, and use not in
accordance with manufacturer’s instructions or which
will have been altered or repaired by persons other than
the authorized agent or employees of the manufacturer.

Disclaimer
The provisions of the warranty are the sole obligations
of the manufacturer and exclude all other warranties of
merchantability, expressed or implied. Further, there are
no warranties that extend beyond the above warranty.

Limitation of Liability
In the event of any claim for breach of any obligations of
the manufacturer under any order, whether expressed
or implied, and particularly in the event of any claim
of a breach of the warranty or warranties contained in
the paragraph “Warranty” or of any other warranties,
expressed or implied which might despite the paragraph
entitled “Disclaimer,” be determined to be incorporated in
any order, the company shall under no circumstances be
liable for any consequential or special damages, either
in law or in equity, or for losses or expenses or claims for
the same arising from the use of, or inability to use, the
products of the manufacturer for any purpose whatsoever.

• The Model SS must be checked before put into
operation. Follow instructions provided in this
manual for procedures on how to do this.

We have designed our equipment to the very highest
performance and safety standards known to the current
technological state of the art. However, the installation,
usage, suitability, and fitness of our equipment for any
purpose, known or unknown, is interdependent upon
the performance of other equipment not manufactured,
installed, or secured or maintained by the manufacturer.
We cannot and do not accept responsibility for any overall
system performance when factors, such as these, are
beyond our control.

• The Model SS should never be modified or
repaired except by qualified personnel and upon
authorization of the manufacturer. Never operate
machinery that is not in full working order.

We will not supply individual component parts of any
circuit board but will supply the individual circuit board
complete. Individual detectors or emitters are available
as a complete tested unit.

• The Model SS may not be able to safely stop a
press which has a faulty stopping mechanism.
The manufacturer cannot be held responsible
for an improperly maintained or faulty stopping
mechanism.

The entire machine
safety system must be tested at the start of
every shift. Machine testing should include:
(1) proper machine operation and stopping
capability; and (2) verification of proper
installation and settings of all point of operation
guards and devices before the operation is
released for production.

FILL THIS INFORMATION OUT IMMEDIATELY
Purchase Date: __________________________
_______________________________________
Model No.: ______________________________
_______________________________________
Options: ________________________________
_______________________________________
Purchased From: _________________________

Serial No.: ______________________________

Microprocessor Revision No.: _______________

This information will be needed in the event
you need assistance.

Table of Contents
Introduction
Theory of Operation ............................................................................................................................................... iii
The System ............................................................................................................................................................ iii
System Safety ........................................................................................................................................................ iii
Safety Features ...................................................................................................................................................... iii
Specifications ....................................................................................................................................................A-1
Standard Features
Solid State Outputs (OSSD) ............................................................................................................................... A-2
Digital CAN data Network ................................................................................................................................... A-2
External Device Monitor (EDM) .......................................................................................................................... A-2
Manual Latching Reset (MLR) ............................................................................................................................ A-2
Optional Features
Remote Status Display (RSD) ............................................................................................................................ A-3
Multi Pylon (MP) .................................................................................................................................................. A-4
Auto Blank ........................................................................................................................................................... A-5
Floating Blank ..................................................................................................................................................... A-6
Safety Relay Module ........................................................................................................................................... A-6
Installation Procedures
System Check ..................................................................................................................................................... A-7
Aligning Pylons ................................................................................................................................................... A-8
Aligning Mirrors ................................................................................................................................................... A-8
Operations .......................................................................................................................................................... A-9
ANSI Standard B11.19.2010 ............................................................................................................................. A-10
Safeguarding with Mechanical Guards ............................................................................................................. A-11
Light Curtain Test Procedure............................................................................................................................. A-11
Wiring ................................................................................................................................................................ A-12
Wiring Safety Relays or a Safety Relay Module ............................................................................................... A-13
Accessories
Cornering Mirrors ................................................................................................................................................ B-1
Pedestal Mounting .............................................................................................................................................. B-2
Swing-Arm Mounting Bracket ............................................................................................................................. B-2
Appendix A: Diagnostics & Troubleshooting
Emitter Pylon - Master ........................................................................................................................................C-2
Emitter Pylon - Slave ..........................................................................................................................................C-2
Receiver Pylon - Master ......................................................................................................................................C-3
Receiver Pylon - Slave ........................................................................................................................................C-3
Appendix B: Regulations and Guidelines
OSHA Regulations ..............................................................................................................................................D-1
Machine Control Reliability Requirements ..........................................................................................................D-1
Safety Guidelines and Management
Operational Safety ..........................................................................................................................................D-2
Power Press Guarding ....................................................................................................................................D-2
Power Press Care through Inspection and Maintenance................................................................................D-3
Safety Enforcement ........................................................................................................................................D-3
Supervisor Training .........................................................................................................................................D-3
Operator Training ............................................................................................................................................D-3
-i-

Table of Contents
Appendix C: Replacement Parts
Pylons ................................................................................................................................................................. E-1
Figures
Figure 1:
Figure 2a:
Figure 2b:
Figure 2c:
Figure 3:
Figure 4:
Figure 5:
Figure 6:
Figure 7:
Figure 8:
Figure 9:
Figure 10:
Figure 11a:
Figure 11b:
Figure 12:
Figure 13:
Figure 14:

Standard RSD .................................................................................................................................. A-3
Floating Blank .................................................................................................................................. A-3
Auto Blank........................................................................................................................................ A-3
RSD and Corresponding Chart ........................................................................................................ A-3
4 Sided Guarding with Dual Stud Guard Brackets, TRM Mirrors and Model #8000 Pedestals ....... A-8
Minimum Object Sensitivity (S) and D(pf) ...................................................................................... A-10
Wiring Diagram with EDM .............................................................................................................. A-14
Wiring Diagram .............................................................................................................................. A-15
Swivel Bracket Dimensions............................................................................................................ A-16
Swivel Bracket Dimensions, pylon dimensions (by model), and additional cable information ....... A-17
Swivel Bracket Dimensions CE, pylon dimensions (by model), and additional cable information . A-18
Fixed Bracket Dimensions, pylon dimensions (by model), and additional cable information......... A-19
Remote Status Display - Auto Blank or Floating Blank .................................................................. A-20
Standard Remote Status Display - No Blanking ............................................................................ A-20
Cornering Mirror Dimensions ........................................................................................................... B-1
Pedestal Dimensions ....................................................................................................................... B-2
Swing-Arm Mounting Brackets......................................................................................................... B-2

Tables
Table 1a:
Table 1b:
Table 2:
Table 3a:
Table 3b:
Table 3c:
Table 4:
Table 5:
Table 6a:
Table 6b:
Table 7a:
Table 7b:

.5” Beam Spacing Pylons................................................................................................................. A-6
1” Beam Spacing Pylons.................................................................................................................. A-6
Mechanical Guards ........................................................................................................................ A-11
Emitter Pylon Wiring ...................................................................................................................... A-12
Receiver Wire Colors ..................................................................................................................... A-12
Optional RSD ................................................................................................................................. A-12
Safety Relay Wiring Table (for Model# SSSR module) .................................................................. A-13
Cornering Mirror Dimensions ........................................................................................................... B-1
Emitter Pylon Master........................................................................................................................C-2
Emitter Pylon Slave..........................................................................................................................C-2
Receiver Pylon Master .....................................................................................................................C-3
Receiver Pylon Slave .......................................................................................................................C-3

- ii -

Introduction

Introduction

System Safety. The Model SS employs redundant,
and diverse technology that provides a backup for every
system that could cause an unsafe condition.
In the Emitter pylon, 1 CPU drives the Infrared LED’s
while the 2nd CPU monitors to assure proper signals and
timing. Improper operation from either CPU will turn off
the Infrared LED’s.
In the Receiver pylon, 1 CPU drives the Infrared receivers while the 2nd CPU monitors to assure proper signals
and timing. Both CPU’s are required to drive the solid
state outputs as well as monitor the condition of the output. Either CPU can shut down both solid state outputs.
Signals shared between CPU’s are isolated from each
other to prevent a failure of 1 microprocessor causing
a failure in the 2nd. Watchdog circuits on the solid state
outputs automatically shut off the outputs should either
CPU slow down or lock up.
Solid state outputs are turned on separately to be
checked to make sure neither output has been shorted,
before fully turning on.

The Model SS is an Infrared safety light curtain that is
designed to the IEC 61496 standard. When properly
installed, it protects the machine operator by passing
an invisible infrared light beam across an area to be
guarded and examining whether or not the light beam(s)
are blocked. If the light beam(s) are blocked, monitored
solid state outputs will open, issuing a “STOP” command
to the machines normally closed (N.C.) “STOP” circuit.
The System is composed of a transmitting unit (EMITTER), and a receiving unit (RECEIVER). The entire
system is control reliable Category 4 (Must be installed
with a control reliable safety circuit per IEC 61496) in
that a single fault anywhere within the Model SS will
not prevent at least one of the solid state outputs from
opening up (allowing a “STOP” command) when either
a beam is broken or an internal fault occurs.
Theory of operation. The Model SS protects an area
by projecting a curtain of infrared light. The infrared
emitters and receivers face each other across the field
to be protected. Each emitter/receiver pair is spaced
along the length of the pylons at regular intervals from
.5”, up to 8” depending on the application. The smaller
spacing are for finger guarding, the larger spacing are
for body guarding.
The emitter/receiver pairs are scanned sequentially (one
at a time) by a very short pulse of infrared light starting
from bottom (cable end), and working up to the top, until
every beam pair has been scanned. Two 16 bit computers in the emitter pylon and two 16 bit computers in the
receiver pylon control the operation, as well as cross
check each pylon.

Safety Features. Designed to meet IEC 61496, UL
1998, UL subject 491, OSHA, ANSI
Microprocessor redundancy for both Emitter and Receiver pylons
Redundant, monitored, 24vdc solid state outputs
Watchdogs on CPU’s and outputs prevent unintentional
output during lockups.

The System. The Model SS employs infrared technology in a small sealed NEMA 4 aluminum housing with
a infrared passing (daylight filtering) acrylic lens. This
system provides harmless invisible protection and an
unobstructed view of the guarded area. There are two
parts to the Model SS: An Emitter pylon and A Receiver
pylon. The Emitter pylon has no outputs, but does contain a digital CAN data network to allow it to be linked
to the Receiver pylon (although not required for operation). The Receiver pylon contains the digital CAN data
network and two monitored solid state 24vdc outputs.
Both pylons synchronize to each other either via the
CAN data network or the bottom beam (beam closest
the cable).

- iv
iii -v-

Specifications
Model SS Safety Light Curtain

Input Power
Emitter pylon: 24vdc @ .125A
Receiver pylon: 24vdc @ .125A (solid state outputs are
PNP which may draw up to .25A additional)

Temperature
0 to 50c (up to 95% humidity, non-condensing)
Dimensions
1.45” (36.8mm) square X selected length (see tables
for lengths)

Internal fuses
Emiter Pylon: F1 @ 1A
Receiver Pylon: F1 @ 1A, F2 @ 1/2A, F3 @ 1/2A

Beam Spacing & Minimum Object Sensitivity (MOS)
.5” (12.7mm)
.55” (14mm) MOS
1” (25.4mm)
1.18” (30mm) MOS
4” (101.6mm)
5”
(special order, 4” (101.6mm) active area followed by a
4” gap) 8” (203.2mm)
(special order, 4” (101.6mm) active area followed by a
8” (203.2mm) gap)

Outputs (OSSD)
Receiver pylon: monitored, 2 outputs, solid state PNP
(24vdc when GREEN, float when RED/off). Max .25A
draw each.
Indicators
Emitter pylon: Yellow, Red, Green.
Receiver pylon: Yellow, Red, Green.

Response Time and Scanning Frequency
< 30 mSec total, 10 khz

Construction
Painted aluminum extrusion with Acrylic IR lens and
Viton Seals providing NEMA 12,13 protection.
Optional Polycarbonate tubes (sleeves) over the pylons
provides NEMA 4 protection.
Cables are both 21’ (6400mm) long with an in-line connector 1’ (305mm) from the base of each pylon.
Emitter pylon: Four conductor 24AWG
Receiver pylon: Six conductor 24AWG
Pylons: Yellow
Cables: Black

Shock
Tested to withstand high vibration (using shock mounts)
Self-Checking
Every 15mSec
Scanning Distance
From 1’ to 20’ (305mm-6,096mm) standard (depending
on model ordered)
From 21’ to 50’ (6400mm-15,240mm) extended range
(optional)
The range is stated as a two digit number within the
Model #

-A-1-

Standard Features
DIN-rail Controller Module

Solid State Outputs (OSSD)
Description:
Two optically isolated solid state PNP outputs (.25A
output max each). Each output is monitored to assure
that 24vdc is not present when the output is turned
OFF, and is present when turned ON.
Output Configuration:
Same States: Output1 (blue wire) & Output2 (brown
wire) are both 24vdc PNP N.O. “held closed” (24vdc
when Green).
Operation:
Same States: When the guard is GREEN, both Outputs
are ON (24vdc out). When the guard is RED, Faulted,
or not powered, both Outputs are OFF.
Output Testing:
Same States: Before the guard goes GREEN, Output1
is turned ON first and Output2 (which is still OFF) is
monitored for voltage on its output. If Output2 is found
OFF, then Output2 is turned ON. This takes ~20mSec
between Output1 and 2 turning back ON.

Never use Outputs 1 & 2 to
control standard relays, contactors, or valves!
Always wire Outputs 1 & 2 to Safety Relays (EDM
option must be enabled), Safety Relay Module (like
the SSSR), or a “Control Reliable” Safety PLC (like
the Pinnacle Safety Hub).

Digital CAN data network
Description: Twisted pair data network designed for high
electrical noise environments. Allows the Receiver pylon
to talk to a remote operating device as well as the Emitter
pylon. You should link the Emitter and Receiver pylon via
CAN if you are powering up both pylons from the same
supply. This eliminates the need for a sync channel (the
bottom beam used to synchronize the pylons).
Operation: When the Emitter and Receiver pylons are
connected together via this network, the Emitter pylon
becomes digitally linked to the Receiver pylon. The
Emitter pylon synchronizes via the CAN data network
to the Receiver pylon instead of using the bottom beam
(beam closest the cable). Pylon status is displayed on
both pylons.

External Device Monitor (EDM)
Description:
Allows the SS to monitor a pair of low cost external Safety
Relays as opposed to the more expensive Safety Relay
Module (SSSR).
Wiring:
Wire the N.C. force-guided contact of each of the pair of
Safety Relays in series. Wire Ground to one side and the
other to the SS EDM input wire (ORANGE).
(See 28-141 Drawing for details).
Operation:
The SS EDM input must be at GROUND when the curtain
is RED (blocked or faulted), and OPEN when the curtain is
GREEN (clear). If either external Safety Relay output contact
remains closed, the SS EDM input will remain Open and a
fault will occur when the curtain is RED. This fault will open
up the remaining Safety Relay contact and lockout.

Manual Latching Reset (MLR)
Description:
Manual Latching Reset can be achieved 3 different ways: 1)
Using the SSSR relay module itself to latch/reset its outputs
(but the status lights on the pylon will not reflect the status
of the SSSR module. 2) Enable the Latching feature of any
RSD (Remote Status Display) module, with a jumper. (Follow
instructions for the RSD on page A-3). 3) Order the built in
Latching feature. ( Note If an RSD is plugged in, the RSD
overrides the built in latching).
When this feature is activated, the guard will stay in a RED
condition when blocked, even when the blockage is removed.
Wiring:
Wire a N.O. push button between GROUND and the SS MLR
input wire (PINK) (see 38-040 Drawing)
Operation:
Clear the guard of blockage and push/release the MLR
button. This will reset the guard as long as the curtain is
properly aligned (no blockage) and no faults.
To temporarily disable the built-in latching option (for
alignment purposes) you need to plug in the optional Remote
Status Display (RSD) with AutoBlank device. Cycling the
AutoBlack key from OFF to Mode 3 and back to OFF will
disable Latching. Unplugging the RSD will restore Latching.
As of Nov 2013, If you need to temporarily bypass the built in
Latching feature without an RSD, do the following: Disconnect
the ORG wire from your Safety Relays, Hold in the Relay
Reset Button (Ground the Pink wire), and turn on the power
to the Guard and wait for a solid RED light (after the power up
sequence). Now reconnect the ORG wire back to the Safety
Relays, then un-Ground the Pink wire. The Guard will now be
- A - 2 - in AUTO Relay reset mode until you cycle power.

Optional Features
Model SS Safety Light Curtain

Remote Status Display (RSD)
Description: Allows AutoBlank and/or FloatingBlank optional features to be added to the Model SS.
Includes a four character diagnostics / status display.
Operation:
Allows you to view current feature modes and status as well as fault conditions.
The Yellow status light indicates when you are in any blanking mode.
Manual Latching Reset:
Install jumper on the left 2 vertical pins of J2, to enable Manual latching reset feature.
Install a N.O. push button between J4 (right terminal) and +24vdc.
To reset after blocking the guard, you must clear the guard then push the N.O. button.
Cincinnati Interface (manual output Test):
If you apply +24vdc to Pin 1 of J4 (left terminal), the display will show a “CINN” and force the “RED” shutting down
both outputs 1 & 2.
This allows a remote device to manually check that both outputs can and will shut OFF.
Figure 1: Standard RSD

Figure 2a: Floating Blank

Figure 2b: Auto Blank

Figure 2c: 52-260 RSD and corresponding chart
J1
J2
J2
J2
J3
J3
J3
J3
J4
J4
J5

ForAB/FBkeyswitch
Leftsetofpins
CentersetofPins
Rightsetofpins
1
2
3
4
1
2
FactoryUseonly

ActivatesLatchingOutputswhenjumpered
FactoryUseonly
ActivatesCincinnatiInterfacewhenjumpered
.+24vdcpowerinput(0.1A)
Ground
CAN_H(Greenwire)
CAN_L(Whitewire)
InputfromCincinnatiInterfacePress
InputfromLatchingOutputResetbutton

= Terminal #1
J Designators = Connectors
F Designators = Fuses
F1 = 1A slo-blo fuse
-A-3-

Optional Features
Model SS Safety Light Curtain

Floating Blank
FB1
1 beam float maximum
FB2
2 beams float maximum
FB21
2 beams float maximum, 1 beam is blocked
OBST
More than 2 separate objects detected in
curtain

Remote Status Display (RSD) Continued

Beam #

Auto Blank
AB3
3 beams programmed in as an Auto Blank
object
PENT
Mode 1 penetration into guard
SIZE
Total number of allowable blanked beams
exceeded during programming
MOVE Auto Blank object(s) moved, uncovering
beam(s)

Total#

The first three numbers displayed represent the first
problem beam on the guard starting from the cable end
of the pylon. The fourth number represents the total
number of beams blocked on the guard. Depending
if your beam spacing is 0.5” or 1.0” you can determine
which board in the pylon is bad.

Cincinnati Interface
CINN
Guard has de-energized safety relays,
forcing a false blockage mode

Definitions
BEAM #:

Indicates first blocked beam (from cable
end). (i.e. 64 = 64” up with 1.0” beam
spacing, or 32” up with 0.5” spacing)

TOTAL #:

Indicates total number of blocked beams
on the curtain.
(i.e., 1 to 9 beams then A to F = 10 to 15
beams)

MULTI-PYLON (MP)
Description:
Multiple sets of light curtains operating independently
can be modified to operate together to prevent infrared
interference between each other, and optionally to
provide a single Dual Safety Output.
Wiring:
The Pink wire of each Receiver pylon must be connected
together as well as the White wires connected together.

The Diagnostics Display has two modes of operation:
Status and Fault. If a fault occurs, the display will scroll
the fault message until the power is removed.

Operation:
Standard= Each curtain uses its own Safety Outputs,
but do not interfere with each other.
Single Output: Blocking 1 curtain will shut down the
Safety Outputs of all connected light curtains.

Status Display Messages
Normal Operation
TEST
Testing internal systems
RST
Unit waiting for Push of FN1 (located on
control module power supply board middle
left hand side)
RDY
Normal operation

Obstruction
03 >
15 or more beams blocked starting 3 beams
up from cable end
153
3 beams out starting 15 beams up from
cable end

-A-4-

Optional Features
Model SS Safety Light Curtain

Auto Blank [patent # 5,243,183]

remain in its exact location permanently. This
works like Mode 1 except guard penetrations
will not latch in a RED condition.

Description: Allows user to program the exact size and
location of an object (i.e., a conveyor, table, work piece,
etc.) automatically and can detect any movement in the
object causing the light curtain to shut down.
Application: With the obstruction in place, turn the
key switch from “OFF” to any mode of operation. If the
object(s) do not exceed the total allowable size, the unit
will energize the safety outputs.
Standard Operation: If the obstruction is moved or
removed, the unit will issue a “MOVE” fault, but will
re-energize the safety outputs when the obstruction
is returned to the original position. Standard operation
allows for a total of eight beams to be blocked anywhere
in the curtain (they do not have to be next to each other).
Optional Operation: If the obstruction is moved or
removed, the unit will issue a “MOVE” fault and lockup,
requiring you to re-program the obstruction.
Troubleshooting: If you get a “MOVE” fault when
the obstruction did not move, it is possible that you
are just barely covering a beam and either vibration or
reflections are causing the beam to become uncovered.
The uncovered beam then causes a fault.
To Activate Feature: This feature must be ordered and
requires exchanging the computer chips (see Installation
Procedures, “Controller Module Setup”).

3)Mode 2 with floating blank. This mode works
like Mode 2 with the addition of a Floating Blank
which is set to allow a one beam float (see
Optional Features, Floating Blank”).
If no obstructions were
programmed in, the guard will still allow a one
beam float.
Programming: To program, turn the keyswitch into the
OFF/RESET position and place the obstruction(s) in the
guarded area. Now, turn the keyswitch into the desired
mode of operation. The exact size and location of the
object(s) are now in memory. The Depth Penetration
Factor D(pf) must be set to account for the one beam
float (see Optional Features, “Floating Blank”).
Diagnostics Display
AB
Auto Blank detected an object (the number
indicates the size of the object).
RDY
No objects programmed in, keyswitch in
Mode 1 or 2.
FB
No objects programmed in, keyswitch in
Mode 3
SIZE
Obstruction size exceeded a total of eight
beams.
PENT
Penetration of the light curtain occurred
while keyswitch was in Mode 1.
MOVE Auto Blank obstruction moved.

Leave key switch in OFF/RESET
position while installing, setting up, and testing the
light curtain. Use Auto Blank only after you are
able to get a clear signal from the curtain with no
obstruction.
The term “Auto Blank” is an abbreviation which stands
for Automatic Programmable Beam Blanking. Auto
Blanking is controlled by a multi-position keyswitch and
has three distinct modes of operation:

Place Auto Blank keyswitch into
OFF/RESET position and remove any obstructions
while aligning light curtain. Do not use Auto Blank
until light curtain is correctly aligned (see Installation
Procedures, “Alignment Procedure”).

1)Must be reset if auto blank obstruction
moves or guard penetrated. The AUTO
BLANK obstruction must remain in its exact
location permanently. Any movement in the
AUTO BLANK obstruction and/or additional
guard penetration will latch the light curtain
in a RED condition and must be reset via the
keyswitch.

The keyed selector switch is designated to be
supervisory controlled. After installation, the safety key
should be removed and controlled only by the safety
supervisor or authorized plant personnel.

NOTE: If no obstructions were programmed in, the
guard will still latch in a RED condition should the
guard be penetrated.
2)Must be reset if auto blank obstruction
moves. The Auto Blank obstruction must
-A-5-

Optional Features

Optional Features

Model SS Safety Light Curtain

Model SS Safety Light Curtain

Floating Blank
Description: On a press brake, the Floating Blank permits
the work piece to be placed in the guarded area and can
be moved around as long as it does not exceed the object
sensitivity selected. A keyswitch by default allows for
zero, one, two, or three beams to be blocked anywhere
in the curtain as long as all the blocked beams are next
to each other. The customer may request different
blanking sizes for different applications. The Minimum
Object Sensitivity (MOS) and the Depth Penetration
Factor (DPF) change when the key switch position
is changed. The DPF is used to compute the safety
distance.
Location of the light curtain from the point of operation
must include the depth penetration factor D(pf)
equivalent to the beam spacing.
Minimum Object Sensitivity indicates the minimum
size required to cause the light curtain to detect an
object even if it is moving (floating). If the obstruction is
slightly smaller (less than .25”) than the stated number,
the light curtain may blink RED/GREEN when the
object is moving in the field of view. If the obstruction
is smaller than the stated number by at least .25”, then
the light curtain will stay GREEN as long as there are
no additional obstructions.
Depth Penetration Factor is the number used to
compute the distance the light curtain should be placed
from the point of operation (see Installation Procedures,
“ANSI Standard B11.19-2010”).

Table 1a:

.5” Beam Spacing Pylons

Display

RDY (float off)
FB1 (1 beam float)
FB2 (2 beam float)
FB3 (3 beam float)
FB4 (4 beam float)
FB5 (5 beam float)
FB6 (6 beam float)

Minimum
Object
Sensitivity, S

D(pf) Depth Max. Floating
Penetration
object size
Factor
less than

Inches/Millimeters

Inches/Millimeters

0.55” / 14mm
1.18” / 30mm
1.75” / 45mm
2.36” / 60mm
2.95” / 75mm
3.54” / 90mm
4.13” /105mm

0.935” / 23.8mm
3.077” / 78.2mm
5.015”/129.2mm
7.089”/180.2mm
9.095”/231.2mm
11.101”/282.2mm
13.107”/333.2mm

Inches/Millimeters

0.00” / 0.0mm
0.45” / 11.4mm
0.95” / 24.1mm
1.45” / 36.8mm
1.95” / 49.5mm
2.45” / 62.2mm
2.95” / 74.9mm

Table 1b: 1” Beam Spacing Pylons

Display

Minimum
Object
Sensitivity, S
Inches/Millimeters

Rdy (float off)
FB1 (1 beam float)
FB2 (2 beam float)
FB3 (3 beam float)
0F4 (4” beam spc)

D(pf) Depth Max. Floating
Penetration object size
Factor
less than
Inches/Millimeters

Inches/Millimeters

1.18” / 30mm 3.077” / 78.2mm 0.00” / 0.0mm
2.36” / 60mm 7.089” /180.2mm 0.95” / 24.1mm
3.54” / 90mm 11.101” /282.2mm 1.95” / 49.5mm
4.72” / 120mm 15.113” /384.2mm 2.95” / 74.9mm
5.90” / 150mm 19.125” /485mm
0.95” / 24.1mm

Safety Relay Module
Description: Connects the two PNP solid-state outputs
from the Model SS to either a Safety Relay Module, like
the Model# SSSR, or to two Safety Force Guided Relays,
like the #52-278.

Diagnostics Display:
RDY
Keyswitch is in the lowest position (Floating
Blank is off).
FB
Indicates Floating Blank active and the
number of blocked beams.
OBST A second object found in the curtain (only
one obstruction is allowed to float).

Application: Provides the Model SS with (2) controlreliable N.O. (held closed) dry contacts which allows
switching up to 240vac, and also daisy chaining Model
SS guards in series with other Safety Guarding devices.

Place Floating Blank keyswitch
in lowest position and remove any obstructions
while aligning light curtain. Do not use Floating
Blank until light curtain is correctly aligned (see
Installation Procedure, “Alignment Procedures”).
The keyed selector switch is designated to be
supervisory controlled. After installation, the safety
key should be removed and controlled only by the
safety supervisor or authorized plant personnel.

Operation: When using the Model #SSSR Safety Relay
Module, see page A-15 for wiring a diagram, and make
sure to Delete the –EDM option when ordering your
Model SS
When using (2) 52-278 Safety Relays, see page A-14 for
a wiring diagram and make sure to INCLUDE the –EDM
option when ordering your Model SS

-A-6-

Installation Procedures
Model SS Safety Light Curtain
4) MOUNT: Mount both pylons with the connector end
in the same direction (either up or down) across the
hazardous area at a distance from the hazardous point
of operation, equal to or greater than the calculated
safety distance (step 2)

The entire machine safety system must be tested at the start of every
shift. Machine testing should include: 1) Proper
machine verification of proper installation and
settings of all point of operation guards and devices before operation is released for production.

5) CONTROL PANEL: Mount 24vdc supply and “Safety
Relay Module” inside your control panel. Both EMITTER
and RECEIVER pylons require 24vdc power. Only the
RECEIVER pylon requires the “Safety Relay Module”

The Model SS should be mounted in a manner
so that only authorized personnel can change the
mounting or location, and that the safety distance
is recalculated each time its position is changed.

6) MIRRORS: Use mirrors to turn a corner 90deg or
more, but no less. If you are using pedestals, do not
permanently mount them until you have finished the
installation procedure. When you have finished aligning
the pylons and can achieve a GREEN indicator, bolt the
stands to the floor. Make sure the bottom edge of the
mirror(s) are below the bottom beam of the curtain and
the top edge of the mirror(s) are above the top beam
of the curtain.

Additional mechanical guards may be required to
prevent the operator from standing between, reaching
over, under, or around the light curtain to the hazardous point of operation.

7) WIRING: Connect the EMITTER & RECEIVER pylon ground wires together to the power supply ground
(black). Connect the EMITTER & RECEIVER pylon
24vdc wires together to the power supply 24vdc output
(red). Connect the EMITTER & RECEIVER pylon CAN
wires together and to the Remote Status Display (RSD)
if applicable (white to white & green to green).Connect
both RECEIVER solid state outputs to the “Safety Relay
Module” inputs (as stated by the manufacture of the
module. Wire the “Safety Relay Module” safety outputs
into your machines “STOP” circuit(s) (Please refer to
page A-10 for wiring details).

Other infrared sources (i.e. other light curtains, etc) can
interfere with operation and prevent the light curtain
from properly aligning and giving a GREEN indication.
Make sure that the RECEIVER pylon cannot view other
infrared Emitters (except its own EMITTER pylon).

Shock Mount the pylons if
they are to be directly mounted onto a high vibration
machine.

8) SYSTEM CHECK: Check the curtains field of view
with a round test piece (dowel rod) that has a diameter
equal to the minimum object sensitivity of the curtain
(see Specifications section). Move the test piece up and
down the curtains field of view to make sure the curtain
stays RED the entire time and that you cannot run your
machine while the curtain is RED.

The Model SS is a low voltage (24vdc) low current
device. Make sure to keep Model SS wiring away from
high voltage / high current components and/or wiring.

1) TEST: Before installation, test curtain by connecting the EMITTER & RECEIVER power together to a
24vdc supply. Point the pylons toward each other
and verify a GREEN indicator light when clear and a
RED when blocked. (see Appendix A for Diagnostics
& Troubleshooting)

If you get a GREEN indication
while the test piece is within the curtains field of view,
this may be due to any of the reasons: a) an incorrectly
sized test piece. b) The Floating Blank option is enabled.
c) There is a reflection from adjacent reflective material.
In this case you must relocate the curtain away from this
material and check again.

2) SAFETY DISTANCE: Determine the Safety Distance for the light curtain (distance from the nearest
hazardous point to the curtain field) based on light
curtain and machine response times (see ANSI Standard B11.19 2003 section)
3) SHOCK/VIBRATION: Determine if any part of
the MicroGuard is to be directly subjected to either
excessive shock and/or vibration. If so, mounted the
subjected parts to your equipment using shock-mount
devices (such as Part#21-019). Shock and/or Vibration
damage is not covered under warranty.

8) ADDITIONAL GUARDS: Install additional mechanical
guards to prevent anyone from getting to the hazardous
point of operation by reaching around, over or under the
light curtain. Also, to prevent anyone from getting in between the curtain and the hazardous point of operation,
install horizontal light curtains or safety mats.
-A-7-

Installation Procedures
Model SS Safety Light Curtain

Aligning Pylons

Aligning Mirrors (refer to Figure 3)

Mechanically line up the pylons so they are looking
straight at each other. Twist the pylons to find the
center of their sweet spot (the point at which you get
a solid GREEN indicator). If you are trying to run the
pylons close to the maximum operating distance, you
may have to tip one end of the Emitter pylons to get a
GREEN indication.

Every mirror you add reduces the maximum operating
distance by 10%-15% and also increases the difficulty
of alignment. Because of the width of the mirrors and
the shoulders of the aluminum extrusion that protect the
mirror, you cannot turn a corner less than 90°.
The vertical height of the mirror with respect to the
vertical height of the pylons should be such that the
mirror matches the beam area of the pylons. You should
have some mirror showing above the top beam and
below the bottom beam.
All mirrors and pylons should be plumb. You should be
able to stand in front of one of the pylons, look straight
ahead, and see the other pylon through the center(s) of
the mirror(s). Depending on what the diagnostics display
reads, you may have to tip one end of the mirror to get
the remaining blocked beams to come in.

Figure 3: 4 Sided Guarding with Dual Stud Guard Brackets, TRM Mirrors and Model #8000 Pedestals

-A-8-

Installation Procedures
Model SS Safety Light Curtain

Operations
Never use Outputs 1 & 2 to
control standard relays, contactors, or valves!
Examine the Model SS on a
daily basis to make sure that the curtain pylons have
not been moved and that any mechanical guarding has
not been moved or removed.

Always wire Outputs 1 & 2 to Safety Relays (EDM
option must be enabled), Safety Relay Module (like
the SSSR), or a “Control Reliable” Safety PLC (like
the Pinnacle Safety Hub).

If it is possible for someone to go through the light
curtain and remain between the curtain and the hazard
without blocking the curtain, you must wire your “Safety
Relay Module” for manual reset, or install a safety mat
or horizontal light curtain to guard this area.

1) APPLY POWER: The curtain (both pylons) will go
through a power up test. First, both Yellow and Green
lights blink 1 time. This indicates the Master and Slave
processors are functioning properly. Second, both Yellow and Green lights blink 2 times. This indicates Master
and Slave are now in sync with each other.
2) SYNCHRONIZATION: The curtain will now determine if the CAN data network is installed. Third, The
Green lights will blink: 2 times for infrared synchronization between pylons, 3 times for CAN data network synchronization between pylons. If infrared synchronization
is used, the Yellow status light on the Emitter pylon will
be on (dim) all the time, with the Red status light blinking periodically, the Receiver pylon will indicate output
status. If the CAN data network is used, the Emitter
status lights will indicate the current pylon output status
(just like the Receiver side).
3) STATUS INDICATORS: Solid Green=Curtain clear
(no blockage, or faults) and outputs active (+24vdc out).
Solid Red=Curtain blocked and outputs off (open). Solid
Yellow= Curtain in either AutoBlank or FloatingBlank
modes. Blinking lights indicate a fault condition and
the outputs will be off (open) (see Fault Codes section)

-A-9-

Installation Procedures
Model SS Safety Light Curtain

ANSI Standard B11.19-2010
Formula for calculating safety distance
of light curtains from hazardous point of
operation.

The following formula should be used when calculating
the safety distance:
Ds = K x (Ts + Tc + Tr + Tbm) + D(pf)
Ds =

The effective sensing field of the device shall be located
at a distance from the nearest recognized hazards such
that the operator or others cannot reach the hazard with a
hand or other body part before cessation of motion during
the hazardous portion of the machine cycle.
The point at which a device responds to an intrusion may
vary. The devices should be located or adjusted such
that the device always responds to the intrusion at or prior
to the safety distance. Care should be exercised when
installing the device to ensure that it does not detect false
signals from other devices in the area.
Usually the electro-optical presence-sensing device is
used in a manner that provides a protected zone in front
of the primary work area with auxiliary devices or guards
used to protect secondary access areas. In some cases,
however, mirrors may be used in conjunction with the
device to provide 2-, 3-, or 4-sided protection.
The machine stop time should be measured with the
machine running at its fastest speed with its heaviest die
or tooling and the stop time being measured at the 90°
position in the downstroke.

Figure 4: Minimum Object Sensitivity (S) and D(pf)

Minimum safety distance between the
device and the nearest point of operation
hazard (in inches).

K =

Hand speed constant. This value has
been determined by various studies and,
although these studies indicate speeds of
63 in/sec to over 100 in/sec, they are not
conclusive determinations. The employer
should determine this value by considering
all factors, including physical ability of the
operator.

Ts =

Stop time of the machine tool measured by a
stop time measurement device.

Tc =

Response time of the control system (usually
is taken care of by the measurement device).

Tr =

Response time of the presence-sending
device and it’s interface, if any, as stated
by the manufacturer or measured by the
employer.

Tbm =

Additional time allowed for the brake monitor
to compensate for variations in normal
stopping time.

D(pf) =

Depth Penetration Factor. Added distance as
indicated by Figure 2. The minimum object
sensitivity is stated by the manufacturer. If a
Floating Blank is used, use the Dpf numbers
found in the Floating Blank section of this
manual.

Penetration factor, Dpf, for presence-sensing
devices used in a vertical application with object
sensitivity less than 64 mm (2.5 inches)

Minimum
Object
Sensitivity
(S)

Dpf, the distance added to the safety distance due
to the penetration factor compensates for varying
object sensitivities of electro-optical presence-sensing
devices.
When blanking features are used and when the
blanked area is not completely filled by the workpiece
or part, or by mechanical guarding, the minimum
object sensitivity can be calculated as:

Dpf = 3.4 (S-7) mm
(Dpf = 3.4 (S-0.275) in)

Minimum Object Sensitivity (S) = Size of the blanked
area plus minimum object sensitivity without blanking.
Read and fully
understand this manual.
Failure to do so could
result in death or
serious injury.

Once this value is found, then determine Dpf.
If the entire blanked area is filled with mechanical
guarding or other fixed material or guards, use the
device’s object sensitivity to determine Dpf.
- A - 10 -

Installation Procedures
Model SS Safety Light Curtain

Safeguarding with Mechanical Guards
When a light system is used to protect the operator or
passerby from penetration, it must be mounted and
properly sized (grid length) so it is impossible to reach
under, around, or over into the hazardous point of
operation zone. Infrared light systems normally guard
the front or feed area of a machine. The sides or the
areas where the light screen does not guard must be
guarded by some other means.
If the position of the safety light curtain will allow the
operator or others to place themselves between the
sensing field and the hazardous area, auxiliary guards or
devices such as safety mats, barrier guards, or devices
should be used in conjunction with the safety light
curtain to prevent the operator or others from exposure
to the hazardous area. If mechanical guards such as
polyurethane, expanded or perforated metal, hairpins,
etc. are used to guard these areas, the opening must
comply with the OSHA safety distance in relationship
to the openings.
After installation of point of operation guards and before
a job is released for operation, a check should be made
to verify that the guard will prevent the operators hands
from reaching into the point of operation or any hazard
zone.
Table 2 outlines the distances that guards should be
positioned from the nearest point-of-operation hazards.
The various openings are such that for average-sized
hands, an operator’s fingers will not reach the point of
operation.
After installation of point-of-operation guards and before
a job is released for operation, a check should be made
to verify that the guard will prevent the operator’s hands
or other body parts from reaching the point of operation.

Light Curtain Test Procedure
Use a dowel rod (or similar object) with a diameter equal
to the M.O.S. (Minimum Object Sensitivity) of the guard
you are testing. Move the rod through the field of the curtain (i.e. top to bottom for vertically mounted curtains).
Repeat this test close to the Emitter pylon, close to the
Receiver pylon, in the middle between the pylons, and
most importantly in front of the operator position.
Make sure the curtain indicates a “Blocked” condition
(RED light) when the rod is in the field of the curtain.
Check and make sure the machine cannot move when
the curtain shows “Blocked”. If the machine can operate while the curtain shows a “Blocked” condition, then
re-examine your wiring.

Always use both safety relays
in your STOP circuit(s).

If the curtain does not show “Blocked” when the rod is
in the field: Check to make sure the rod is truly in the
curtain’s field, and re-check the curtain’s Minimum Object Sensitivity (including AutoBlank and Floating blank
options that change the M.O.S.).
Infrared light from the curtain may be reflecting around
the rod due to reflective material too close to the curtain’s field. In this case, you will have to move the curtain
pylons back away from the reflective material and repeat
the test over again. The curtain’s power level can also
be reduced by the factory.

Table 2: Mechanical Guards
Distance of opening
from point of operation
hazard (inches)
1/2
1-1/2
2-1/2
3-1/2
5-1/2
6-1/2
7-1/2
12-1/2
15-1/2
17-1/2

to
to
to
to
to
to
to
to
to
to

1-1/2
2-1/2
3-1/2
5-1/2
6-1/2
7-1/2
12-1/2
15-1/2
17-1/2
31-1/2

Maximum width
of opening
(inches)
1/4
3/8
1/2
5/8
3/4
7/8
1-1/4
1-1/2
1-7/8
2-1/8

- A - 11 -

Installation Procedures
Model SS Safety Light Curtain

Wiring

You must wire both Outputs 1
& 2 to a “Safety Relay Module Control Reliable” Safety
PLC, when this product is used for safety guarding.

Each pylon comes standard with 21’ (6400mm) of cable
with a quick disconnect in-line connector
Optional longer cables can be purchased (to replace the
20’ (6096mm) section). Voltages applied are to never
exceed 24vdc.

Wire all the Grounds together to the power supply.
Wire all the 24vdc together to the power supply.
Wire all the CAN_H together

Table 3a: Emitter Pylon Wiring

Wire all the CAN_L together
Wire Output 1 and Output 2 to the “Safety Relay Module”
(see manufactures installed instructions)

Emitter Pylon
Terminal#
1
2
3
4

Connector
Black
Red
White
Green

Definition
Ground
+24vdc regulated input
CAN_L data network
CAN_H data network

OUTPUTS 1 & 2 MUST BE
USED WITH EITHER “CONTROL RELIABLE” PLC
INPUT CIRCUITS OR A SAFETY RELAY MODULE.

Table 3b: Receiver Wire Colors

Multiple Pylon Model SS Guard System

Receiver Wire Colors
Terminal#
1
2
3
4
5

6

Connector
Red
Black
White
Green
Blue

Brown

7

Orange

8

Pink

Definition
+24vdc regulated input
Ground
CAN_L data network
CAN_H data network
Output 1 (24 vdc when
Green) (open when red)
(.25A max)
Output 2 (24vdc when
Green) (open when Red)
(.24A max)
EDM (GND when RED,
OPEN when GREEN)
Latching Relay Reset
(GND, then OPEN to
reset Outputs)

Table 3c: Optional RSD
Optional RSD
Terminal#
1
2
3
4

Definition
+24vdc regulated input
Ground
CAN_H data network
CAN_L data network

Multiple SS Guards scanning sequentially to
prevent interference with each other.
-MP Blocking one unit will not affect the others
connected together. You must have Safety Relays
for each SS Guard. If the separate SS guards are
NOT connected together via the CAN data network,
they scan independently and act as standard SS
guards.
-MP# Blocking one unit will shut off the outputs of
ALL units connected together. This allows 3 SS
guards to interface with 1 set of Safety Relays. If
the separate SS units are NOT connected together
via the CAN data network, ALL SS units will fault out
as a safety measure. # is the number of SS guards.
(See wiring diagram A-13 28-149)
All RED wires connect together and then connect to
+24vdc power supply
All BLACK wires connect together and then connect
to GROUND
All ORANGE wires connect together and then
throughthe N.C. contacts of both Safety Relays
to GROUND
All PINK wires connect together
All WHITE wires connect together
Connect the GREEN wires together from Emitter
and Receiver of 1 SS Guard. (The GREEN wires
between guards are NOT connected together.)

- A - 12 -

Installation Procedures
Model SS Safety Light Curtain

Wiring Safety Relays or a Safety Relay

Module

The SS guard can be wired to individual Safety Relays
with the EDM option, or to the more flexible Safety
Relay Module.

The Model Number SSSR Safety Relay Module has two
internal Safety Relays inside and has built-in circuitry
to check for contact welding. The SSSR Module also
allows for Automatic or Manual Relay resetting. If you
choose to wire your guard using this Module, follow
the 28-142 wiring diagram page and Table 3 below.
See manufactures instructions provided with the SSSR
Module for further details regarding the SSSR. See
Table 3 for wiring.

The Model SS and Model CA light curtains do not
require mechanical safety relays if you connect both
solid-state SS/CA outputs (both Blue and Brown wires)
to separate inputs on a control-reliable safety PLC.
This configuration does not require the EDM option.

Never use Outputs 1 & 2 to
control standard relays, contactors, or valves!
Always wire Outputs 1 & 2 to Safety Relays (EDM
option must be enabled), Safety Relay Module (like
the SSSR), or a “Control Reliable” Safety PLC (like
the Pinnacle Safety Hub).

The Part Number 52-278 Safety Relay is a lower cost
alternative to the SSSR Module, but requires two 52278 Safety Relays and does not allow you to select
automatic or manual relay resetting in the field and so
requires you to choose auto/manual when you order
your light curtain. Also, the Part Number 52-278 does
not self-check and so requires you to order your light
curtain with the EDM option. If you choose to wire the
Part Number 52-278 Safety Relays follow the 28-141
wiring diagram using two Part Number 52-278 relay/
socket assemblies. Mount them on a DIN-rail in your
control panel.
Table 4: Safety Relay Module Wiring (for Model# SSSR module)
Terminal
A1 (1.1)
A2 (2.4)
PE
S12 (4.3)
S31 (2.3)
S22 (2.2)

Description
+Supply input
-Supply input
Earth
Ch1 input
Ch2 input
Ch2 input

Connect to

CA Output 1
CA Output 2
S21 (2.1)

S35 (1.4)
S35 (1.4)

Auto Reset
Manual Reset

S12 (4.3)
thru N.O. push button to S12 (4.3)

13 (3.1) -14 (4.1)
23 (3.2) -24 (3.3)
31 (3.4) -32 (4.4)

N.O. (held closed) output
N.O. (held closed) output
N.O. (held open) output

Stop circuit 1
Stop circuit 2
Aux circuit 3

+24v power
Ground

Wire Color
Red
Black
Blue
Brown

You must use at least 2 output STOP circuits. If your machine has only 1 STOP
circuit, you must wire 2 STOP circuits in series.

- A - 13 -

Dimensions
Model SS Safety Light Curtain
Figure 5: Wiring Diagram

OPTIONAL
Terminal Strip:
Never apply any
voltage > 24vdc to
any terminal

Customer
supplied
+24vdc @ 1A
(minimum)
Power supply

-

Receiver Pylon

Never apply any voltage greater than 24vdc to
any wire of either Pylon or RSD

Emitter Pylon

Microguard (SS) 28-141 Wiring Diagram (with EDM)
Shown with (2) 52-278 Safety Relays

3S

hie

lds

Earth

+24vdc
+24vdc

Red #1
Blk #2
Wht #3

Ground
CAN_L

d

OSSD #1
OSSD #2
EDM

Brn #6
Org #7

MLR

Pnk #8

all

all wht

blk

all grn

Grn #4
Blu #5

CAN_H
Ground

all re

blue
brown
orange
pink

Ground
A1

A2

A1

Safety
Relay #1
11

NC

Safety
Relay #2
12

11

NC

11

23

24

23

24

33

34

33

34

43

44

43

44

NO

NO

: The Terminal numbers shown on the
safety relays below are not located in the
actual physical positions around the relay.

A2

Optional Latching Reset
Button (MLR)

OSSD outputs:
24vdc = closed (grn
light)
(.5A max each)
Only wire up to control
reliable (non-inductive)
circuits. Or Safety
Relays shown

EDM: External
Device Monitor.
Orange Wire. You
must use EDM with
Safety relays

Dry Contact
#1 N.O. (held
closed)

Dry Contact
#2 N.O. (held
closed)

MLR: Manual
Latching Relay.
Pink Wire. Use
RSD instead if
available
FSD Safety Outputs wire in
series with machine STOP
or ESTOP circuit(s)
you can wire voltage up to
240vac through these 3
contacts

Dry Contact
#3 N.O. (held
closed)

OPTIONAL

CAN: Controller
Area Network. White
& Green Wires.
Communication
between Emitter,
Receiver and RSD

- A - 14 -

RSD “Remote Status
Display” provides
message display,
Blanking, Latching
Relay, Cincinnati
interface

Dimensions
Model SS Safety Light Curtain

Figure 6: Wiring Diagram

OPTIONAL
Terminal Strip:
Never apply any
voltage > 24vdc to
any terminal

Customer
supplied
+24vdc @ 1A
(minimum)
Power supply

-

hie

+24vdc
Ground
CAN_L
Ground

CAN_H
OSSD #1
OSSD #2

Red #1
Blk #2
Wht #3
Grn #4
Blu #5

EDM

Brn #6
Org #7

MLR

Pnk #8

lds

all re

all

all wht

d

blk

all grn
blue
brown
orange
pink

OSSD outputs:
24vdc = closed (grn
light)
(.5A max each)
Only wire up to control
reliable (non-inductive)
circuits. Or Safety
Relays shown

A2
S12

S31
OPTIONAL
Model SSSR
Safety Relay Module
S22 SNO4062k S35

S21
31 32

3S

Earth

+24vdc

A1

Receiver Pylon

Never apply any voltage greater than 24vdc to
any wire of either Pylon or RSD

Emitter Pylon

Microguard (SS) 28-142R2 Wiring Diagram (no EDM)
Shown with Model# SSSR Safety Relay Module

OPTIONAL

EDM: External
Device Monitor.
Orange Wire. Do
NOT use with
SSSR module

24 23 14 13

Dry Contact
#1 N.O. (held
closed)
FSD Safety Outputs wire in
series with machine STOP
or ESTOP circuit(s)
Dry Contact
#2 N.O. (held
closed)

Dry Contact
#3 N.C. (held
open)

MLR: Manual
Latching Relay.
Pink Wire. Use
RSD instead if
available or SSSR

you can wire voltage up to
240vac through these 3
contacts
CAN: Controller
Area Network. White
& Green Wires.
Communication
between Emitter,
Receiver and RSD

This is not a Safety
Contact

- A - 15 -

RSD “Remote Status
Display” provides
message display,
Blanking, Latching
Relay, Cincinnati
interface

Dimensions
Model SS Safety Light Curtain
Figure 7:

- A - 16 -

Dimensions
Model SS Safety Light Curtain

Pylon Dimensions

Figure 8: Swivel Bracket Dimensions, pylon dimensions (by model), and additional cable information

- A - 17 -

Dimensions
Model SS Safety Light Curtain

Pylon Dimensions

Figure 9: Swivel Bracket Dimensions CE, pylon dimensions (by model), and additional cable information

- A - 18 -

Dimensions

Pylon Dimensions

Model SS Safety Light Curtain

Figure 10: Fixed Bracket Dimensions, pylon dimensions (by model), and additional cable information

- A - 19 -

Dimensions
Model SS Safety Light Curtain

Remote Status Display (RSD)™
Figure 11a: Remote Status Display - Auto Blank or Floating Blank

Figure 11b: Standard Remote Status Display - No Blanking

Material .062” thick steel
Painted blue

- A - 20 -

Accessories
Model SS Safety Light Curtain

Cornering Mirrors
Through the use of cornering mirrors, multiple sides or
work envelopes can be guarded which enhance safety
and down-time related to mechanical and electrical
interlock systems. Include a reflectivity loss per mirror
(15% for MGM, 10% for TRM) when calculating total
scanning distance of light curtain.

Mirrors are surface coated.
Wipe surface using only a damp, clean, soft 100%
cotton cloth. To replace broken or scratched glass,
remove end bracket and slide mirror out with gasket.

If you are using Auto Blank
or Floating Blank options, you may unknowingly
create a hole around your machine. Do not use
mirrors with blanking unless you need blanking on
all guarded sides.

Table 5: Cornering Mirror Dimensions
MODEL

TRM-04 / MGM-04
TRM-08 / MGM-08
TRM-12 / MGM-12
TRM-16 / MGM-16
TRM-20 / MGM-20
TRM-24 / MGM-24
TRM-28 / MGM-28
TRM-32 / MGM-32
TRM-36 / MGM-36
TRM-40 / MGM-40
TRM-44 / MGM-44
TRM-48 / MGM-48
TRM-52 / MGM-52
TRM-56 / MGM-56
TRM-60 / MGM-60
TRM-64 / MGM-64

DIM A (in/mm)
(hole to hole
distance)
7.45 / 189
11.45 / 240
15.45 / 392
19.45 / 494
23.45 / 595
27.45 / 697
31.45 / 799
35.45 / 900
39.45 / 1002
43.45 / 1104
47.45 / 1208
51.45 / 1307
55.45 / 1408
59.45 / 1510
63.45 / 1612
67.45 / 1713

DIM B (in/mm) DIM C (in/mm)
(mirror length) (total length)
6.25 / 159
10.25 / 260
14.25 / 362
18.25 / 464
22.25 / 565
26.25 / 667
30.25 / 768
34.25 / 870
38.25 / 971
42.24 / 1073
46.25 / 1175
50.25 / 1276
54.25 / 1378
58.25 / 1480
62.25 / 1581
66.25 / 1683

8.50 / 216
12.50 / 318
16.50 / 419
20.50 / 521
24.50 / 622
28.50 / 724
32.50 / 826
36.60 / 927
40.50 / 1029
44.50 / 1130
48.50 / 1232
52.50 / 1334
56.50 / 1435
60.50 / 1537
64.50 / 1638
68.50 / 1740

Tolerance: +/- 0.10 inches / .025cm

Figure 12: Cornering Mirror Dimensions
MGM Dimensions

TRM Dimensions

-B-1-

Accessories
Model SS Safety Light Curtain

Standard height = 72” (model 8000)

Pedestal Mounting

Optional height = 96” (model 8096)

The heavy duty, all-welded steel pedestal floor mounts
can be used for mounting either the MicroGuard Metal
Box or DIN-rail Controller Module or cornering mirrors.
Sliding mounts on the pedestal are universal in design
and are supplied standard. Unique floating base on
pedestal is designed to compensate for uneven floors.
Pedestal is fabricated from 12 gauge steel, the base is
¼” steel plate, and the entire unit is painted OSHA yellow.

Figure 13: Pedestal Dimensions

Stud is 3/8”-16 x 10/16” long

Do not mount pedestal to floor
until you have fully installed your guarding system and
know it is operating properly in its current position on
the floor.

Pedestals must be bolted to
the floor after installation; they must not be movable.
11-183
11-184

Standard Single pedestal mounting
bracket

Maximum adjustment is 1/2”
(13mm) vertical on four 3/8”
(10mm) x 1.5” (38mm) bolts.

Special Dual pedestal mounting
bracket. Has two mounting studs
90deg apart. Allows both Emitter and
Receiver pylon on one pedestal.
Requires SMB option on pylons.

Pedestal is square.
All dimensions are the same
on the x and y axis.

Figure 14: Swing-Arm Mounting Brackets

Model 9000 and 9500

Excellent method of mounting the light guard for press brakes or when the light guard is to be moved for die setups
or machine maintenance. Model 9000 consists of three 180-pivot points along with light guard diagonal movement
capability for virtually unlimited light guard positioning. Two-inch square tubing 3/16” thick painted OSHA yellow
which mounts directly onto the machine housing and makes for a heavy duty yet versatile mounting bracket. Model
9500 consists of two 180-pivot points and one adjustable length arm.
Model 9000 Swing Arm Brackets

Model 9500 Swing Arm Brackets

-B-2-

Appendix “A”
Diagnostics & Troubleshooting
Model SS Safety Light Curtain
Flashing LED(s) indicate a fault has occurred. To
find the fault you must count the number of flashes.
If multiple faults have occurred, the lowest number
flashed first, followed by the next higher number, after
the last fault is flashed the cycle starts over again.

The “Remote Status
Display” will show the actual fault message instead
of flashing LEDs.

Problem:

Yellow LED is ON steady on
Emitter pylon. Red LED flashes
every few seconds.

Solution:

The CAN data lines (white &
green wires) from both RX and TX
pylons are not connected together.

The SS guard has gone into bottom beam
synchronization mode where the RX and TX
pylons do not need to by wired together.

Problem:

No output on 1 or both of the
Safety Outputs (blue and/or brown
wires) are not reading 24vdc when
the guard is GREEN.

Solution:

Check RX pylon wiring. Check
RX pylon internal fuse. Allow unit
to cool down, remove Outputs

-C-1-

Appendix “A”
Diagnostics & Troubleshooting
Model SS Safety Light Curtain
Table 6a: Emitter Pylon Master
EMITTERPYLON(MasterCPU)
Flashes(GRNLED)

RSDMessage

Description
MasterEmitterlengthofpylonappearstooshortforwhat’sprogrammedintothecomputerboard.
ProbleminEmitterpylon.
MasterEmitterlengthofpylonappearstoolongforwhat’sprogrammedintothecomputerboard.
ProbleminEmitterpylon.

1

MTXLengthFault

2

MTXLengthFault

3
4
5
6
7
8

MTXOpenLEDfault1
MTXOpenLEDfault2
MTXShortLEDfault1
MTXShortLEDfault2
MTXM/SnotinSYNC

MasterEmitterfoundOPENinLEDOFFwhenitshouldbeON
MasterEmitterfoundOPENinLEDONwhenitshouldbeOFF
MasterEmitterfoundShortinLEDwhenON
MasterEmitterfoundShortinLEDwhenOFF
MasterEmitterCPUcannotSYNCupwithSlaveCPU.ProbleminEmittercomputerboard.

9

MTXM/SCannottalk

MasterEmitterCPUcannottalkwithSlaveEmitterCPU.ProbleminEmittercomputerboard.

10
11
12
13
14
15

MTXNoCANwithRXPylon
CANerroratstartup

MasterEmitterlostCAN(White&Green)dataconnectionwithReceiverpylon.

Table 6b: Emitter Pylon Slave
EMITTERPYLON(SlaveCPU)
Flashes(YELLED)

Solidon

RSDMessage

NoCANconnected

Description
TheCAN(White/Green)datanetworkappearstohavenoconnection.TheREDLEDontheEmitter
pylonwillflash1timeeveryfewsecondstoindicatelife.TheEmitterpylonhasgoneintoBottom
BeamsynchronizationtocommunicatewiththeReceiverpylon.IfyouhaveconnectedtheWhite&
GreenwiresbetweentheEmitterandReceiverpylons,thenthereisaproblem.

1

STXLengthFault

2
3

STXGFault

SlaveEmitterlengthofpylondoesnotmatchtheprogrammingofthecomputerboard.Problemin
Receiverpylon.
EmitterLED’snotfiringcorrectly.Emitterpylonfault.

4

STXCLKlineFault

SlaveEmitterCPUtimedoutwaitingforclocksignalfromMaster.CheckEmittercomputerboard.

5
6

STXOpenLEDfault3
STXShortLEDfault

SlaveEmitterfoundOPENinLED.CheckEmitterpylon.
SlaveEmitterfoundSHORTinLED.CheckEmitterpylon.

7

STXM/Sbaddata

SlaveEmitterCPUcannottalkwithMasterEmitterCPU.ProbleminEmittercomputerboard.

8

STXM/SCannottalk

SlaveEmitterCPUcannottalkwithMasterEmitterCPU.ProbleminEmittercomputerboard.

9

STXMSTneverstarted

SlaveEmitterCPUnevercompletedpowerupinitializationroutineproperly.ProbleminEmitter
computerboard.

10
11
12
13
14
15

-C-2-

Appendix “A”
Diagnostics & Troubleshooting
Model SS Safety Light Curtain
Table 7a: Receiver Pylon Master
RECEIVERPYLON(MasterCPU)
Flashes(GRNLED)

RSDMessage

Description
MasterReceiverlengthofpylondoesnotmatchtheprogrammingofthecomputerboard.Problemin
Receiverpylon.

1

MRXLengthFault

2

MRXReceiverFault

MasterReceivercircuitryisfaulty.ProbleminReceiverpylon.

3

MRXK1ͲK2OutputShort

MasterReceivercircuitryisfaulty.SolidͲStateoutputs(Blue&Brownwires)appeartobeshorted
together.

4

MRXTXN/AFault

4

MRXNoCANwithTXPylon

4

MRXCANTransFault

4

MRXCANCorrupted

MasterReceiverappearsconnectedtotheEmitterpylonorRSD,butcannotcommunicatewithit.
CheckCable,CheckEmitterpylon.CheckRSD.IfbothReceiver&Emitterpylonsappeartofunction
normally,thentheRSDisatfault.

5

MRXInfraredDetected

MasterReceiverhasdetectedexternalinfraredsignalsfromanothersourcebesidesitsownEmitter
pylon.CheckforexternalInfraredsources,ifnone,thenrepairReceiverpylon.

6

MRXK2stuckOFF

MasterReceiversolidͲstateoutputK2isnotturningonwhencommandedtoo.Thisoutputis0.5A
max.CheckloadonoutputBrownwire.Thereisaninternalautomaticallyresettingthermalfuse.

7

MRXK2stuckON

8

MRXM/SCannottalk

9
10
11
12
13
14
15

SlaveLengthFault
SlaveRXorRelayFault

MasterReceiverappearsconnectedtotheEmitterpylon,butcannotcommunicatewithit.Check
Cable,CheckEmitterpylon.

MasterReceiversolidͲstateoutputK2isnotturningoffwhencommandedtoo,orexternalvoltage
hasbeenappliedtothisoutput.CheckwiringofBrownwire.CheckforparallelwiringontheBrown
wire.
MasterReceiverCPUcannottalkwiththeSlaveReceiverCPU.CheckcomputerboardinReceiver
pylon

Table 7b: Receiver Pylon Slave
RECEIVERPYLON(SlaveCPU)
Flashes(YELLED)

RSDMessage

1

SRXLengthFault

2
3

SRXReceiverFault

Description
SlaveReceiverlengthofpylondoesnotmatchtheprogrammingofthecomputerboard.Problemin
Receiverpylon.
SlaveReceivercircuitryisfaulty.ProbleminReceiverpylon.
SlaveReceiverCPUtimedoutwaitingforclocksignalfromMaster.CheckReceivercomputerboard.

4

Clocklinefault

5

RXonatwrongtime

6

SRXK1stuckOFF

SlaveReceiversolidͲstateoutputK1isnotturningonwhencommandedtoo.Thisoutputis0.5Amax.
CheckloadonoutputBluewire.Thereisaninternalautomaticallyresettingthermalfuse.

7

SRXK1stuckON

SlaveReceiversolidͲstateoutputK1isnotturningoffwhencommandedtoo,orexternalvoltagehas
beenappliedtothisoutput.CheckwiringofBluewire.CheckforparallelwiringontheBluewire.

8

CannottalktoMasterCPU

SlaveReceiverCPUcannottalktotheMasterReceiverCPU.CheckcomputerboardinReceiverpylon.

9

SRXMST/SLVnotinSYNC

SlaveReceiverCPUtimedoutwaitingforSYNCsignalfromMaster.CheckReceivercomputerboard.

10
11
12
13
14
15

-C-3-

Appendix “B”

Regulations and Guidelines
Model SS Safety Light Curtain

OSHA Regulations

auxiliary equipment, and safeguards are in
a safe operating condition and adjustment.
The employer shall maintain records of
these inspections and maintenance work
performed.

1910.217 (C) (3) (iii)
Safeguarding the Point of Operation
(iii) A presence sensing point of operation device shall
protect the operator as provided in paragraph (c) (3)
(i) (a) of this section, and shall be interlocked into the
control circuit to prevent or stop slide motion if the
operator’s hand or other part of his body is within the
sensing field of the device during the downstroke of the
press slide.

1910.212
General requirements for all machines (covers
press brakes, hydraulic and pneumatic machines
not covered by mechanical power press standards).
(a) Machine guarding - (1) Types of guarding. One
or more methods or machine guarding shall
be provided to protect the operator and other
employees in the machine area from hazards
such as those created by point of operation
ingoing nip points, rotation parts, flying chips,
and sparks. Examples of guarding methods
are: barrier guards, two-handed tripping
devices, electronic safety devices, etc.

(a) The device may not be used on machines
using full revolution clutches.
(b) The device may not be used as a tripping
means to initiate slide motion.
(c) The device shall not be constructed so that
a failure within the system does not prevent
the normal stopping action from being applied
to the press when required, but does prevent
the initiation of a successive stroke until
the failure is corrected. The failure shall be
indicated by the system.

These are only partial reprints,
refer to your Federal Register for total construction,
control reliability, and machine guarding requirements
for the subject machine being guarded for all applicable
OSHA Standards.

(d) Muting (bypassing of the protective function)
of such device, during the upstroke of the
press slide, is permitted for the purpose of
parts ejection, circuit checking, and feeding.
(e) Refer to ANSI B11.19-2010 for calculating
safety light curtain distance from the point of
operation.

Machine Control Reliability
Requirements

(f) Guards shall be used to protect all areas of
entry to the point of operation not protected
by the presence-sensing device.

Control Reliability
“...control circuits shall be designed and constructed so
that a single failure or fault within the system does not
prevent the normal stopping action from being applied
to the press when required, or does not create an
unintended stroking action, but does prevent initiation of
a successive stroke until the failure is corrected” (ANSI
B11.1-2009).

1910.217 (C) (3) (iii)
Additional requirements for safeguarding
Where the operator feeds or removes parts by placing
one or both hands in the point of operation, and a two
hand control, presence sensing device or Type B gate
or movable barrier (on a part revolution clutch) is used
for safeguarding:

“...control shall be designed to prevent initiation of a
stroke signal in the event that a failure occurs within the
press control” (ANSI B11.2-2013).

(i) The employer shall use a control system
and a brake monitor which comply with
paragraphs (b) (13) and (14) of this section.

“Robots shall be designed and constructed so that any
single, reasonably foreseeable failure will not cause
hazardous motion of the robot” (ANSI/RIA R15.062012).

(e) Inspection, maintenance, and modification of
presses(i) It shall be the responsibility of the employer
to establish and follow a program of
periodic and regular inspections of his
power presses to insure that all their parts,
-D-1-

Appendix “B”

Regulations and Guidelines
Model SS Safety Light Curtain
“...control circuits shall incorporate features to minimize
the possibility of an unintended stroke in the event of
the failure of the control component to function properly,
including relays, limit switches, and static output circuits”
(ANSI B11.1-2009).

should be assigned to work on or with any
machine.
9. It shall be the responsibility of the employer
to provide an adequate, clean, safe, and
uncluttered work area around each machine.
10. If a malfunction is reported, stop the machine
immediately, correct the problem, then resume
production.

“...control system shall be constructed so that a failure
within the system does not prevent the normal stopping
action from being applied to the press when required,
but does prevent initiation of a successive stroke until
the failure is corrected” (ANSI B11.1-2009).

11. Investigate all accidents and close calls.
Analyze the reason for occurrence. Take action
to prevent recurrence. Keep records of the
investigation and preventative steps that were
taken.

“...the control system shall be constructed so that a
failure within the system does not prevent the normal
stopping action from being applied to the press when
required, but does prevent initiation of a successive
stroke until the failure is corrected” (OSHA CFR
1910.217).

12. Only employees who understand the machines,
operation and safety requirements, and who are
able to communicate this knowledge should
be given the responsibility of instructing and
training others to perform as operators.

Safety Guidelines for Management

13. Management must decide that personnel
protective safety equipment is required to
perform each job safely. Items such as safety
glasses, shoes, gloves, helmets, hand pads,
spats, protective sleeves and material handling
equipment are common in the metal working
industry. If noise levels are excessive, protective
headsets and earmuffs are recommended.

Operational Safety
1. Appoint a Safety Coordinator to be responsible
for safety regulations, requirements, and
suggestions. He must review and investigate
all accidents and “close calls.”
2. Establish and issue safety rules. Inform each
employee of his responsibilities. Make sure he
understands them and knows what is expected
of him.

14. When designing point of operation guarding,
the manufacturing process should be weighed
heavily in favor of operational safety.

3. A thorough review and an early inspection must
be made of existing presses, dies, and point
of operation guarding to attain the degree of
responsibility required by ANSI B11.1-2009
Safety Standards and Federal State laws.
Review what mandatory modifications are
necessary.

15. Establish safe and convenient material handling
methods and procedures.
16. Post in convenient areas the names, addresses,
and phone numbers of physicians and hospitals,
and members of the organization who are to be
called in case of emergency.

4. Equipment that is no longer safe and that cannot
be economically upgraded should be destroyed.

17. All equipment must be electrically connected
according to the National Electric Code and be
consistent with other accepted practices.

5. Never allow persons legally under age to
operate or assist in the operation of machinery.

18. Provide adequate and proper fire protection
equipment.

6. All personnel must be properly trained to
eliminate accidents and injuries.
7. Regardless of the operator’s experience,
education, or language barrier, it is the
responsibility of the supervisor to give him
a thorough explanation with each new job
assignment.
8. No employee should be given a work assignment
that he does not fully understand. Only properly
instructed and thoroughly trained personnel
-D-2-

Appendix “B”

Regulations and Guidelines
Model SS Safety Light Curtain

be corrected to prevent possible injuries and
damage.

Power Press Guarding
1. Press manufacturers do not know and cannot
foresee the magnitude of potential
applications of power presses. Therefore,
only the press user can determine the type of
guards that have to be used in order to perform
the job safely. It is the responsibility of the
user management to make certain that point of
operation guarding and other necessary safety
devices are installed. The press should be
guarded in such a manner that it is impossible
for the operators to place their hands or any
other part of the body in the die area.

Safety Enforcement
In order to have an effective safety program,
management at all levels must enforce every safety
rule and regulation. Strong disciplinary measures are
sometimes required. They should consist of a warning,
written reprimand, work suspension, transfer, demotion,
or possibly a dismissal. All infractions must be reported
and recorded. Once an infraction in noted, it shows
that an unsafe practice or condition has existed. This
may be the result of poor planning or improper training
and instructing. The reason for the infraction should be
analyzed in order to take corrective action.

2. The press user should become thoroughly
acquainted with the safety devices commonly
employed in power press operations.

Supervisor Training

3. Feeding devices are strongly recommended,
since they remove the operator from the
die area, and therefore allow more effective
utilization of guards and safety devices.

It should be the responsibility of management to instruct
their supervisors on safety, giving job instructions,
supervising operators, determining accident causes, and
building safety attitudes among the machine operators.
Accidents can occur due to inadequate training of
supervisors.

4. Do not release a press for production before
installing and testing all guards and covers.
5. Make frequent evaluation checks of all guarding
and devices while the press is running. Correct
all unsafe findings immediately.

Operator Training
It shall be the responsibility of management to insure
proper training of operators. A specific training program
should be instituted to instruct the operator in safety,
proper usage of the equipment, and correct operational
procedure in performing each and every job. In addition
to the supervisor, the operator should be familiar with the
proper guarding of the point of operation. Never permit
an operator to start a job without complete instructions
from his immediate supervisor.

Power Press Care through Inspection and
Maintenance
1. All maintenance and inspection personnel
should be specifically instructed, and must
understand proper maintenance and inspection
procedures contained in this manual.
2. Set up a daily, weekly, and monthly press
inspection program. Use a checklist and verify
that the job is done correctly.
3. Establish a preventative maintenance program.
Records of all maintenance work performed
must be kept.
4. Since all equipment has a limited life, quality
maintenance personnel are required to obtain
maximum usage of your equipment.
5. Releasing a power press for production following
maintenance should be the responsibility of a
qualified individual assigned by management.
6. To maintain the original level of press reliability,
careful inspection of mechanical, electrical, and
pneumatic areas must be made. This may give
an advance warning of a hazard which then can
-D-3-

Appendix “C”

Replacement Parts
Model SS Safety Light Curtain

Pylons
Part Number
52-254 (ref 31-092)
52-255 (ref 31-095)
52-272
52-273
52-274
52-275
52-276
52-277
52-260 (ref 31-097)
21-068
21-007
21-012
21-066
21-033
21-067
52-263
52-264
27-004
32-097
11-183
11-184
20-022

Description
Receiver pylon computer board
Emitter pylon computer board
Emitter cable, 1’ pig-tail (4 cond male) Shielded
Emiter cable, 20’ (4 cond female) Shielded
Emitter cable, 45’ (4 cond female)
Receiver cable, 1’ pig-tail (6 cond male)
Receiver cable, 20’ (6 cond female)
Receiver cable, 45’ (6 cond female)
RSD computer board (for MG-SS guards)
Cable Strain relief (for either Receiver or Emitter pylon)
Gasket (between bracket and pylon)
Top L shaped bracket
Bottom L shaped bracket (with grommet hole)
Top Swivel mount bracket
Bottom Swivel mount bracket (with grommet hole)
Standard pylon housing (painted with lens)
CE pylon housing (painted with lens)
Replaceable lens for either Standard or CE housing
Safety Relay Module (SSSR)
Standard Single pedestal mounting bracket
Special Dual pedestal moutning bracket. Has two mounting studes 90deg apart. Allows both
Emitter and Receiver pylon on one pedestal. Requires SMB option on pylons.
1A Slo-Blo fuse

21-019

Rubber Shock-Mount (Male-Female) 1” dia x 1” tall 5/16-18 thread

-E-1-

NOTES

Questions? Email the Sales Department at sales@pinnaclesystems.com or our Engineers at service@pinnaclesystems.com.

WARRANTY

LIMITATION OF LIABILITY

Manufacturer warrants that this product will be free from
defects in material and workmanship for a period of one
year from the date of shipment thereof. Within the warranty
period, manufacturer will repair or replace such products
which are returned to it with shipping charges prepaid and
which will be disclosed as defective upon examination
by the manufacturer. This warranty will not apply to any
product which will have been subject to misuse, negligence,
accident, restriction, and use not in accordance with
manufacturer’s instructions or which will have been altered
or repaired by persons other than the authorized agent or
employees of the manufacturer.

In the event of any claim or breach of any obligations
of manufacturer under any order, whether expressed or
implied, and particularly in the event of any claim or a breach
of the warranty or warranties contained in the paragraph
“Warranty” or of any other warranties, expressed or implied
which might, despite the paragraph entitled “Disclaimer,” be
determined to be incorporated in any order, the company
shall under no circumstances be liable for any consequential
or special damages, either in law or in equity, or for losses
or expenses or claims for the same arising from the use of,
or inability to use, the products of the manufacturer for any
purpose whatsoever.

DISCLAIMER
The provisions of the paragraph “Warranty” are the sole
obligations of the manufacturer and exclude all other
warranties of merchantability, expressed or implied.
Further, there are no warranties which extend beyond the
above warranty.

The entire machine safety
system must be tested at the start of every shift.
Machine testing should include: (1) proper machine
operation and stopping capability; and (2) verification
of proper installation and settings of all point of
operation guards and devices before the operation
is released for production.

DISCLAIMER

CHANGE IN SPECIFICATIONS

Pinnacle Systems, Inc. does not assume liability for the
contents of this publication or the use of any products
described. Pinnacle Systems, Inc. reserves the right to
make changes to the products or any catalogs without
further notice.

Product specifications and accessories may be changed
at any time based on improvements and other reasons.
It is our practice to change part numbers when published
ratings or features are changed, or when significant construction changes are made. However, some specifications of the Product may be changed without any notice.
When in doubt, special part numbers may be reassigned
to fix or establish key specifications for your application.
Please consult the factory.

ERRORS AND OMISSIONS
Information presented by Pinnacle Systems, Inc. has
been checked and is believed to be accurate; however,
no responsibility is assumed for clerical, typographical or
proofreading errors or omissions.

Sales and Marketing Offices
United States
Pinnacle Systems, Inc.
P.O. Box 100088
Pittsburgh, PA 15233
Toll Free Number: 800-569-7697
Direct Number: 412-262-3950
Fax: 412-262-4055

Canada
Pinnacle Systems, Inc.
8-1734 Orangebrook Court
Pickering, Ontario L1W 3G8
Toll Free Number: 888-285-8885
Direct Number: 905-831-1111
Fax: 905-831-4064

Customer Service: (630) 443-8542
We have designed our equipment to the very highest
performance and safety standards known to the
current technological state of the art, as evidenced by
our U.S.A. and foreign patents issued and pending.
However, the installation, usage, suitability, and fitness
of our equipment for any purpose, known or unknown,
is interdependent upon the performance of other
equipment not manufactured, installed, secured or
maintained by Pinnacle Systems, Inc.
We cannot and do not accept responsibility for any
overall system performance when factors, such as
these, are beyond our control.

www.pinnaclesystems.com
sales@pinnaclesystems.com
service@pinnaclesystems.com



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