The fault prevention of the Show Lighting Hoist Controller should be carried out from multiple aspects such as daily maintenance, operation specifications, and environmental control, in combination with its service environment (frequent operation, vibration, dust, humidity changes, etc.) and equipment characteristics.
Check the contacts of the Show Lighting Hoist Controller every six months for ablation and oxidation (characterized by blackened, uneven contacts). Slight oxidation can be polished with fine sandpaper; in severe cases, the contacts should be directly replaced.
Check whether the contactor coil is overheated (alert if the temperature exceeds 60℃ during operation). Overheating of the coil may be caused by unstable voltage or stuck iron cores, which requires targeted treatment.
For the inspection of circuit boards and electronic components, observe the capacitors on the circuit board every quarter for bulging or leakage, check if resistors are discolored, and see if chips are loose. Replace them in time if any abnormalities are found. Avoid the controller being in a vibrating environment for a long time (such as near stage machinery). If necessary, install shock-absorbing pads to prevent solder joints from falling off.
For the calibration of limit switches and protection devices, test the sensitivity of the limit switch every month (press "up" and "down" to the extreme positions to confirm whether it can automatically stop). If the triggering is delayed or invalid, adjust the position or replace it. Calibrate the overload protection threshold of the Show Lighting Hoist Controller every six months (through controller parameter settings or external instrument testing) to ensure it matches the rated load of the hoist and avoid false triggering or protection failure.
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