What should I do if there is an energy storage failure in the MNS low-voltage drawer cabinet? This is a question that many users will ask. In order to enable you to use it smoothly and normally in the days to come, let's answer this question for you.
1. Improper adjustment of travel switch
The travel switch is a limit switch that controls the energy storage position of the motor. Cut off the power supply of the motor when the energy storage of the motor is in place. If the limit is too high, the mechanism energy storage is full. The fault phenomenon is that the motor does not stop when idling and the energy storage indicator does not light up. Only by opening the control switch (HK) can the motor stop. When the limit adjustment is too low, the motor stops in advance before the energy storage is full. The switch cannot be closed because the energy storage is not in place. The way to adjust the limit is to slowly store energy manually to find the correct position and tighten it.
2. Motor fault
If the motor winding is burnt, there will be peculiar smell, smoke, fuse blowing and other phenomena. If there is voltage at both ends of the motor, the motor will not rotate. The carbon brush may fall off or be seriously worn. The way to determine whether the motor is faulty is to measure the voltage and resistance at both ends of the motor or replace it with other good motors.
3. Control switch fault or open circuit
The switch cabinet believes that when the control switch is damaged and the circuit cannot be closed and the control circuit is disconnected and causes an open circuit, the fault manifestations are that the motor does not rotate and there is no voltage at both ends of the motor. The search method is to measure the voltage or resistance with a multimeter. The voltage measurement method is to adjust the multimeter to the voltage range when the control circuit is powered on. If there is voltage (except for the step-down element), there is an open circuit between the two measured points. Pay attention to the on-off of the bypass when using the resistance measurement method. If there is a bypass parallel circuit, disconnect one end of the measured line.
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