Install Instructions

CURRENT SWITCHES - SOLID AND SPLIT CORE
3 31-00146—02
Fig. 5. Analog Circuit
Calibration of Adjustable Trip Point
(Adjustable switches only)
The adjustable current switch has an operating range of
0-250 Amps, Do not exceed! The current switch has an
adjustable trip point range of 0.50 - 220 Amps, 1.50 - 220
Amps, or 0.60 - 180 Amps depending on the model. See
Figure 6 to determine the adjustable trip point range per
model number. The adjustable current switch comes with
its fifteen-turn adjustment potentiometer set counter
clockwise to the maximum trip point position. The
adjustable current switch can monitor Underload, Normal
Load, and Overload conditions, depending on how it’s set.
NORMAL LOADS:
The procedure below is for the Normal load condition for
part numbers CS-O-A, CP-O-A and CP-O-AL.
With power on, turn the 15-turn adjustment potentiometer
counterclockwise until the Red LED turns on and stop
immediately. The adjustable current switch is now tripped.
The adjustable current switch Hysteresis (Dead Band) is
10% of the trip point typically.
TROUBLESHOOTING
M37383
24 VAC
TRANSFORMER
120 VAC LINE
CONTROLLER
DI
(STATUS)
DO
RELAY/CONTACTOR
24 VAC COIL
(RELAY COIL OR
CONTACTOR)
M37384
24 VAC
TRANSFORMER
120 VAC LINE
CONTROLLER
DI
(STATUS)
DO
RELAY/CONTACTOR
24 VAC COIL
(RELAY COIL OR
CONTACTOR)
Table 1.
Problem Solution
LED is on but the current switch didn’t activate Disconnect the wires from the current switch output. Measure the resistance across the contacts with an
Ohmmeter. See Table 2 for the actual resistance readings for an open or closed switch reading.
LED didn’t turn on and the current switch
didn’t activate
Verify that the current flowing in the conductor being monitored is above the fixed trip point as listed in the
operating specifications. If the sensor is monitoring less than the fixed trip point See Fig. 3.
Red LED didn’t turn on and the current switch
didn’t activate
Verify that the conductor you are monitoring is above the adjustable trip point. If the sensor is monitoring less
than the adjustable trip point, see Fig. 3.
LED not on but the Current Switch is Activated LED not indicating correctly, may have been damaged
Sensor doesn't switch at all, regardless of
current level.
Adjustment potentiometer is probably set to its maximum or minimum position. Turn the Pot clockwise all the
way and verify if the LED switches from Blue to Red.
Current Switch is operating at a low-level
current or failing to operate within the
accuracy specifications.
For CP-O-F Series, visually check the mating parts of the core to ensure there is no debris between the split
contacts. Remove all debris or dust manually and close the current sensor, See Fig. 2. Retest the sensor in
your application.