DCL 24V GEY Series Regulating Actuator Troubleshooting Guide

Description of fault judgment logic:

• L2 Bright:If the input signal is less than 2.5mA or greater than 22mA, the servo controller considers the input signal invalid. Measure the voltage between the input signal terminals, when the input signal is 4~20mA, the voltage between the two ends of the input signal terminals should be between 0.88~4.4V, if the input signal is less than 0.55V (corresponding to a current of 2.5mA) or greater than 4.84V (corresponding to a current of 22mA), it means that the input signal lead is open, short circuit, leakage phenomenon occurs or control system to give the signal. If the voltage between the terminals is normal and L2 is still on, the servo controller may be faulty.
• L3 is lit:Indicates a fault in the position detection circuit. Check whether the opening potentiometer lead is open or short circuit or whether the potentiometer itself is damaged. Normal potentiometer voltage should be about 4V, potentiometer center line and either end of the voltage should change with the potentiometer openness changes, if the above checks are normal, L3 is still bright, may be servo controller failure.
• L4 is lit:Indicates a mechanical failure in operation. Check whether the motor wiring is loose or open circuit; the motor itself can work properly; with the handle hand crank the actuator were rotated in both directions, check whether the actuator is jammed, if the above checks are normal, L4 is still bright, may be servo controller failure.