SSAC ECS Series Current Sensors Data Sheet Brochure

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Current

Sensors &

Monitors

8.4 Low Voltage Products & Systems

1TRC 001 009 C0202 ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com

Accessories

Description

The ECS Series of Single Phase AC Current Sensors is a universal, overcurrent or undercurrent sensing control.

Its built-in toroidal sensor eliminates the inconvenience of installing a stand-alone current transformer. Includes

onboard adjustments for current sensing mode, trip point, and trip delay. Detects over or under current events like

locked rotor, loss of load, an open heater or lamp load, or proves an operation is taking place or has ended.

Operation

Input voltage must be supplied at all times for proper

operation. When a fault is sensed throughout the trip

delay, the output relay is energized. When the current

returns to the normal run condition, the output and the

delay are reset. If a fault is sensed and then corrected

before the trip delay is completed, the relay will not

energize and the trip delay is reset to zero.

Adjustment

Select the desired function, over or under current

sensing. Set the trip point and trip delay to approximate

settings. Apply power to the ECS and the monitored

load. Turn adjustment and watch the LED. LED will

light; turn slightly in opposite direction until LED is off.

Adjustment can be done while connected to the control

circuitry if the trip delay is set at maximum.

See accessory pages for

specifications.

Toroidal Through Hole Wiring

0.5...50 A Trip Point

Adjustable or Factory Fixed

Trip Delays

10 A SPDT Isolated Output

Contacts

5% Trip Point Hysteresis

(Dead Band)

Approvals:

Over/Under Current Sensing

ECS Series

Current Sensor

Connection

Example P/N:

Function

TP = Trip Point R = Reset OC = Monitored Cur

rent

NO = Normally Open Contact NC = Normally

Closed Contact A = Sensing Delay On Start Up

TD = Trip Delay

Overcurrent

Undercurrent

Relay contacts are isolated.

Dashed lines are internal connections.

–A - 0.150 ... 7 s

–B - 0.5 ... 50 s

–0 - 0.5 ... 5 A

–1 - 2 ... 20 A

–H - 5 ... 50 A

Fixed -

Specify 2 ... 50 A

in 1 A increments

–1 - 12 V DC

–2 - 24 V AC

–3 - 24 V DC

–4 - 120 V AC

–6 - 230 V AC

Input Trip Point Trip Delay Sensing Delay

on Start up

–F - Factory Fixed:

Adjustable Ranges Adjustable Ranges

Specify .08 ... 50 s

ECS41AC Fixed – ECSH610AD

–ECS -(selectable over or

under current sensing)

–ECSH -(overcurrent sensing)

–ECSL - (undercurrent sensing)

X

Series

Female quick connect

P/Ns:

P1015-13

(AWG 10/12)

P1015-64

(AWG 14/16)

P1015-14

(AWG 18/22)

V = Voltage I> = Overcurrent I< = Undercurrent

W = Insulated Wire Carrying Monitored Current

Ordering Table

–Blank - 0 s

–C - 1 s

–D - 2 s

–E - 3 s

–F - 4 s

–G - 5 s

–H - 6 s

X X X X

ECS02B01 12.28.04

Current

Sensors &

Monitors

Low Voltage Products & Systems 8.5

ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com 1TRC 001 009 C0202

Technical Data

Over/Under Current Sensing

ECS Series

Current Sensor

Mechanical View

Inches (Millimeters)

Multiple Turns To Increase Sensitivity

To increase sensitivity, multiple turns may be made through the ECS’s toroidal

sensor. The trip point range is divided by the number of turns through the

toroidal sensor to create a new range.

Using an External Current Transformer (CT)

Select a 2 VA, 0 to 5 A output CT, rated for the current to be monitored. Select

ECS adjustment range 0. Pass the CT’s secondary wire lead through the ECS’s

toroid and connect both ends together.

Sensor

Type Toroidal, through hole wiring

Mode Over or under current, switch selectable on the unit or factory fixed

Trip Point Range 0.5 ... 50 A in 3 adjustable ranges or fixed

Tolerance: Adjustable Guaranteed range

Fixed 0.5 ... 25 A: 0.5 A or +/-5% whichever is less; 26 ... 50 A: +/-2.5%

Maximum Allowable Current

Steady – 50 A turns; Inrush – 300 A turns for 10 s

Trip Point Hysteresis ≅+/-5%

Trip Point vs. Temperature +/-5%

Response Time ≤ 75 ms

Frequency 45 ... 500 Hz

Type of Detection Peak detection

Trip Delay

Type Analog

Range: Adjustable 0.150 ... 7 s; 0.5 ... 50 s (Guaranteed ranges)

Factory Fixed 0.08 ... 50 s (+/-10%)

Delay vs. Temperature +/-15%

Sensing Delay on Startup Factory fixed 0 ... 6 s: +40% ... 0%

Input

Voltage 24 , 120, or 230 V AC; 12 or 24 V DC

Tolerance 12 V DC & 24 V DC/AC -15% ... +20%

120 & 230 V AC -20% ... +10%

Line Frequency 50 ... 60 Hz

Output

Type Electromechanical relay

Form Isolated single pole double throw (SPDT)

Rating 10 A resistive at 240 V AC; 1/4 hp at 125 V AC; 1/2 hp at 250 V AC

Life Mechanical – 1 x 106 ; Electrical – 1 x 105

Protection

Circuitry Encapsulated

Isolation Voltage ≥ 2500 V RMS input to output

Insulation Resistance ≥ 100 MΩ

Mechanical

Mounting Surface mount with two #6 (M3.5 x 0.6) screws

Termination

0.25 in. (6.35 mm) male quick connect terminals (5)

Humidity 95% relative, non-condensing

Operating/Storage Temperature -40°C ... +60°C / -40°C ... +85°C

Weight ≅ 6.4 oz (181 g)

ECS02B01 12.28.04