AUTOMATION COMPONENTS, INC Version : 1.0
2305 Pleasant View Road Page 3 of 3 I0000558
Middleton, Wisconsin 53562 (888) 967-5224
www.workaci.com
Calibration of Adjustable Trip Point
The adjustable current switch has an operating range of 0-150 Amps.
Do not exceed!
The adjustable current switch comes with
its fifteen-turn adjustment potentiometer set to the 100 Amp trip point position. The adjustable current switch can be used to
monitor Under Load, Normal Load, and Over Load conditions, depending on how it’s set. The procedure below is for the Normal
load condition for part numbers A/MCS-A & A/MSCS-A.
Normal Loads
With current flowing through the aperture of the A/MCS-A and A/MSCS-A current switches, first verify that the Blue LED is on.
If the Blue LED is on, now slowly adjust the potentiometer clockwise until the Red LED just turns on and stop immediately. This
will set the trip point at your normal operating load current. If the RED LED is on after initial power up, this means that you will
need to slowly adjust the potentiometer counter-clockwise until the Blue LED turns on and then slowly adjust the potentiometer
clockwise until the Red LED just turns on and stop immediately. The adjustable current switch is now tripped. Now verify the
output with an Ohmmeter to verify that the contacts of the switch are approximately 0.200 Ohms. The adjustable current switch
Hysteresis (Dead Band) is typically 10% of the trip point.
Troubleshooting
Problem
Solution
Red 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 Figure 7
below
for resistance readings for a good unit.
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 Figure 3
on Page 1.
Sensor doesn't switch at all, regardless of current
level.
Adjustment potentiometer is probably set to its maximum or minimum
position. Turn the Pot counter-clockwise all the way and verify if the
LED switches from Red to Blue.
ACI Model #
Resistance if switch open
Resistance if switch closed
A/MCS-A
Greater than 1 Meg ohms
Approximately 0.2 ohms
A/MSCS-A
Greater than 1 Meg ohms
Approximately 0.2 ohms
Figure 7
WEEE Directive
At the end of their useful life the packaging and product should be disposed of via a suitable recycling centre. Do not dispose of
with household waste. Do not burn.
LISTED
3SR0
C
US
