P51922
Rev 04
Effective: April 2010
Page 2
Questions? Call our Sensor Application Engineers at (800) 426-9184.
RANGES AND MAXIMUM AMPS
Housing
Range
Maximum Amps
Continuous
6 sec.
1 sec.
Solid Core
1.5-150A
500A
500A
1,000A
Split Core
2.8-150A
500A
500A
1,000A
TROUBLESHOOTING
Problem
Solution
Switch is
always tripped
Switch may have been overloaded and contacts are burned out. Check the
output load, remembering to include inrush on inductive loads (coils, motors).
Switch will
not trip
For split core models, the core contact area may be dirty. Open the sensor
and clean the contact area.
Switch may have been overloaded and contacts are burned out. Check the
output load, remembering to include inrush on inductive loads (coils, motors).
Make sure function switch is in “RUN” mode.
SPECIFICATIONS
Specifi cation
Value
Power Supply
Self Powered–No Power Supply Needed
Output
Magnetically Isolated Solid State Switch
Output Rating
Normally Open (N.O.) Models: 0.30A @ 135V AC/DC
Off-State Leakage
< 10 µA
Response Time
200 ms
Setpoint
Overload Only Models: +15% of Load
Underload Only Models: -15% of Load
Over/Underload Models: ±15% of Load (Operating Window)
Setpoint Ranges
Solid Core: 1.5-150A
Split Core: 2.8-150A
Hysteresis
Approx. 5% of Setpoint
Isolation Voltage
UL Listed to 1,270V AC, Tested to 5,000V AC
Frequency Range
6-100Hz
Sensing Aperture
Solid Core Models: 0.75 in. (19mm) dia.
Split Core Models: 0.85 in. (21.7mm) sq.
Housing
UL94 V0 Flammability Rated
Environmental
Operating Temperature: -58 to +149° F (-50 to +65° C)
Humidity: 0-95% RH, Non-Condensing
Approvals
UL and ULC Listed
CE Certifi ed
695000107
SETPOINT ADJUSTMENT
The CurrentWatch™ ECS7 Series has an internal microprocessor
that “learns” your load characteristics and calibrates the setpoint and
setpoint window.
Initial Calibration
1. This product is shipped from the factory with Function Switch in
the “CLR” position, which clears the memory.
2. After installation is complete and the output is connected properly,
slide this switch into the “RUN” position.
3. Turn on the load. The LED indicator marked “CALIB/ALARM”
will fl ash slowly (about one fl ash every two seconds) during the
learning period. When this LED goes out, the sensor has been
calibrated.
Re-Calibration
If the load or conditions change, you may need to recalibrate the sensor.
Below are the steps for doing so.
1. Safety fi rst—turn load power off before recalibrating.
2. Slide the Function Switch to the “CLR” position.
3. Turn the load power back on for fi ve seconds, then turn it off. This
clears the memory.
4. Slide the Function Switch to the “RUN” position.
5. Turn the load back on. The sensor is now re-calibrated.
• Note: For special situations, re-calibration can be performed while
the load is running.
Exercise extreme caution when placing your
hands into a high voltage environment!
With the load running,
fl ip the Function Switch to the “CLR” position, wait fi ve seconds,
then move the Function Switch back to the “RUN” position. The
sensor will then re-calibrate.
LED INDICATION
State
Contact LED
Calibration LED
Off
Load off or below threshold.
Caution! Load power may be on!
Sensor is operating normally
or is off.
Slow Flash (Once
Every Two Seconds)
Output open, normal state.
Sensor is learning the load and
self-calibrating.
Fast Flash (About Two
Flashes Per Second)
Switch is tripped, output closed.
Calibration error. Perform
re-calibration.
CURRENT SWITCH OPERATION
Model
Output Diagram
Underload Only Models
Amps
Output Open
(LED Off)
Output Closed
(LED Slow)
Output Open
(LED Fast)
Calibration Point
Overload Only Models
Amps
Output Open
(LED Off)
Output Closed
(LED Slow)
115% of Calibration Point
Calibration Point
(LED Fast)
Over/Underload Models
Amps
Output Closed
Output Closed
(LED Off)
Output Open
(LED Slow)
115% of Calibration Point
(LED Fast)
85% ofCalibration Point
(LED Slow)
