Over/Under Current Sensing ECS Series Current Sensor 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 Function Input voltage must be supplied at all times for proper Overcurrent 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. Toroidal Through Hole Wiring Undercurrent 0.5...50 A Trip Point Adjustable or Factory Fixed Adjustment Trip Delays Select the desired function, over or under current 10 A SPDT Isolated Output sensing. Set the trip point and trip delay to approximate Contacts settings. Apply power to the ECS and the monitored 5% Trip Point Hysteresis TP = Trip Point R = Reset OC = Monitored Current load. Turn adjustment and watch the LED. LED will (Dead Band) NO = Normally Open Contact NC = Normally light; turn slightly in opposite direction until LED is off. Closed Contact A = Sensing Delay On Start Up Adjustment can be done while connected to the control Approvals: TD = Trip Delay circuitry if the trip delay is set at maximum. Connection Available Models- ECS20BC •ECS21BC ECS2HBC ECS30AC ECS31AC ECS31AD ECS40A •ECS40AC ECS40B •ECS40BC ECS40BH •ECS41A •ECS41AC •ECS41BC ECS41BD ECS41BH ECS4HA ECS4HAC •ECS4HBC ECS4HBH ECS60AH ECS60BC •ECS61BC ECSH21AC ECSH21F2.5C ECSH30AC ECSH30BH ECSH31AD ECSH31F.08C ECSH34F.08C ECSH40A •ECSH40AC •ECSH40AD Relay contacts are iso- ECSH40BC ECSH41AC •ECSH41AD lated. Dashed lines are internal ECSH41AE ECSH41AH ECSH41BC connections. ECSH41F.08C ECSH41F.08D ECSH41F.08E ECSH4HAD ECSH4HF.08D ECSH60AF V = Voltage I> = Overcurrent ECSH60F0.1C ECSH61AD ECSH61AF I< = Undercurrent ECSH61AG ECSL20F.08G ECSL31A W = Insulated Wire ECSL40AC ECSL40AH ECSL40B Carrying Monitored Current ECSL40F.08G ECSL41A ECSL41AC ECSL41AD ECSL41AH ECSL4HA ECSL4HBH ECSL61AH ECSL6HAC Accessories Don’t see what you need? Call us for a minimum quantity and price quote! Ordering Table Female quick connect Series P/Ns: X X X X X Input Trip Point Trip Delay Sensing Delay P1015-13 (AWG 10/12) P1015-64 (AWG 14/16) –ECS -(selectable over or –1 - 12 V DC Fixed - on Start up –F - Factory Fixed: P1015-14 (AWG 18/22) under current sensing) –Blank - 0 s –2 - 24 V AC Specify 2 ... 50 A Specify .08 ... 50 s –ECSH -(overcurrent sensing) in 1 A increments –C - 1 s –3 - 24 V DC –ECSL - (undercurrent sensing) –D - 2 s –4 - 120 V AC Adjustable Ranges Adjustable Ranges –E - 3 s –6 - 230 V AC –A - 0.150 ... 7 s –0 - 0.5 ... 5 A –F - 4 s –1 - 2 ... 20 A –B - 0.5 ... 50 s See accessory pages for –G - 5 s –H - 5 ... 50 A specifications. –H - 6 s Example P/N: ECS41AC Fixed – ECSH610AD 8.4 SSAC, LLC. • 800-377-7722 • customerservice@ssac.com • technicalsupport@ssac.com • www.ssac.com • denotes a preferred product Current Sensors & Monitors ECS02B01 09.10 ECS02B01 09.10 Current Sensors & Monitors Over/Under Current Sensing ECS Series Current Sensor Technical Data 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 6 5 Life Mechanical – 1 x 10 ; Electrical – 1 x 10 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) Mechanical View 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. Inches (Millimeters) 8.5 SSAC, LLC. • 800-377-7722 • customerservice@ssac.com • technicalsupport@ssac.com • www.ssac.com • denotes a preferred product