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Motor failure
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When applying high voltage, users may try to apply the supply voltage (110 or 240VAC) directly to the motor in an actuator that isn’t
working, to try to determine if the issue is motor, or PCB related. In doing so, the motor is irreparably damaged (and also possibly the
main PCB if the motor cable is not removed from the PCB ahead of the ‘test’) because all J3C-S actuators use a 24VDC motor.
Incorrect wiring
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The difference between the power (grey plug) and end of travel (black plug) wiring has not been observed, or the plugs have been
swapped so the grey plug was fitted to the black base, creating an internal short circuit resulting in a blow-out on the limit-switch PCB.
ACTUATOR DRIVES CONTINUOUSLY
REPORTED FAULT
POSSIBLE REASON(S) POSSIBLE SOLUTIONS/ ADVICE
Actuator drives
continuously
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Vibration can cause the switch cam to rise up the output shaft so that it misses the switch lever
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Faulty switch (very rare)
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Damaged micro-switch PCB creating miscommunication between switch PCB, and main PCB.
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Wiring completely wrong
