Troubleshooting
1. Sensor is always tripped.
A. The jumper may be set in a range that is too low for current
being monitored.
Move jumper to the correct range.
B. The setpoint may be too low.
Turn pot CCW to increase setpoint.
C. Mismatched Polarity (DC Output Only)
Check polarity on output wiring: output is corrected as need-
ed.
D. Switch has been overloaded and output is burned out.
Check the output load, remembering to include inrush on
inductive loads (coils, motors, ballasts).
2. Sensor will not trip.
A. The jumper may be set in a range that is too high for current
being monitored.
Move jumper to the correct range.
B. The setpoint may be too high.
Turn pot CW to decrease setpoint.
C. Monitored current is below minimum required.
Loop the monitored wire several times through the aperture
until the ‘sensed’ current rises above minimum.
Sensed Amps = (Actual Amps) x (Number of Loops).
Count loops on the inside of the aperture.
Split Core models: the core contact area may be dirty.
Open the sensor and clean the contact output area.
D. Switch has overloaded and output is burned out.
Check the output load, remembering to include inrush on
inductive loads (coils, motors, ballasts).
Description
ACS200 Series are solid-state current operated switches. They
operate (switch) when the current level through the sensing
aperture exceeds the adjustable setpoint. Internal circuits are
totally powered by induction from the line being monitored.
Installation
For All Versions
Run wire to be monitored through the opening in the sensor.
ACS200 switches work in the same environment as motors,
contactors, heaters, pull-boxes, and other electrical enclosures.
They can be mounted in any position. Leave at least one inch
distance between sensor and other magnetic devices.
Split-Core Versions (-S Suffix)
Press the tab in the direction as shown to open the sensor.
After placing wire in aperture, press the hinged portion firmly
downward until a click is heard and the tab pops out fully.
CAUTION: Incandescent lamps can have
“Cold Filament Inrush” current of up to 10
times their rated amperage. Use caution
when switching lamps on and off.
Setpoint Adjustment
ACS200 switches have two setpoint adjustment mechanisms,
as follows:
1. Select the setpoint RANGE with the Range Jumper.
2. Fine tune the SETPOINT with the 4- or 15-turn potentiometer
(pot). See the product label for the amp ranges and jumper
positions.
The pot is shipped from the factory set fully clockwise (CW) to
the lowest setpoint. Turning the pot counterclockwise (CCW)
will increase the setpoint. The pot has a slip-clutch to prevent
damage at either end of its rotation. To determine where the
adjustment is, turn the pot at least 4 (or 15) times CW. This will
return it to the minimum setpoint.
Adjustment Notes
1. Output is solid-state. Check output status by applying
voltage to the output and reading the voltage drop across the
output. An ohmmeter set on “Continuity” will give misleading
results.
2. It is recommended the setpoint be adjusted to allow for
usual utility company voltage variations of 10-15%.
Typical Adjustment
1. Move the jumper to the desired range. Turn the pot to
minimum setpoint (4 or 15 turns CW).
2. Have normal operating current running through sensor.
The output should be tripped since the pot is at its minimum
setpoint. LED should be flashing fast (2 to 3 times per second).
3. Turn the pot CCW until the unit output changes state. This
is indicated by the slow flashing of the LED (once every 2 to 3
seconds), or by the changing of the output switch status.
4. Now turn the pot CW slowly until the unit trips again. It is
now set at the current level being monitored.
A. To Set UNDERLOAD - Turn the pot about 1/8 turn further
CW.
B. To Set OVERLOAD - Turn the pot about 1/8 turn further
CCW.
Monitored Amps
Output
LED
N.O.
N.C.
None or less than minimum
Open
Closed
Off
Below trip level
Open
Closed
Slow (2 sec.)
Above trip level
Closed
Open
Fast (0.5 sec.)
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KEEP SPLIT-CORE SENSORS CLEAN
Silicone grease is factory applied on the mating surfaces to
prevent rust and improve performance. Be careful not to allow
grit or dirt onto the grease in the contact area. Operation can
be impaired if the mating surfaces do not have good contact.
Check visually before closing.
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ACS200-AA-xx
ACS200--AD-x
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No
Polarity
Output Wiring
Connect output wires to the sensor. Use Use 22-14AWG
copper wire and tighten terminals to 9 in-lbs torque. Be sure
the output load or loop power requirements are met.
