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Motor encoder alarm
? Failure Cause
Wiring error; Electromagnetic interference; Hardware damage of encoder caused by mechanical vibration; Pollution caused by the site environment;
? Trouble Removal
Check wiring and eliminate errors; Check whether the shielding is in place, check whether the wiring is reasonable and solve, if necessary, increase the filter to improve; Check the mechanical structure and improve it; Check whether the encoder is polluted or corroded (dust, oil, etc.) and strengthen protection;
? Installation and wiring standards
Try to use the original cable; Separate cables to keep them away from contaminated wiring as far as possible, especially high pollution wiring; Always use internal power whenever possible. If switching power supply is used, filter should be used to ensure that the power supply reaches the clean grade; Always ground the common end; The encoder shell is insulated from the machine structure and connected to the cable shielding layer; If it is not possible to insulate the encoder, the cable shield can be connected to ground (or dedicated terminals) on the encoder housing and driver frame.
Motor shaft broken
? Failure Cause
Unreasonable mechanical design leads to excessive radial load; Load end stuck or serious instant overload; The assembly of motor and reducer is different.
? Trouble Removal
Check the maximum radial load that can be borne in the motor sample and improve the mechanical design; Check the operation of the load end, confirm the actual process requirements and improve; Check whether the load is stable, whether there is vibration, and improve the accuracy of mechanical assembly.
The no-load current of the motor is unbalanced and the three phases differ greatly
? Failure Cause
The winding ends are connected wrong; Power supply voltage imbalance; The winding has inter-turn short circuit, coil reverse connection and other faults.
? Trouble Removal
Check and correct; Measure the power supply voltage and try to eliminate the imbalance; Eliminate winding faults.
Abnormal sound occurs when the motor is running
? Failure Cause
Bearing wear or sand and other foreign bodies in the oil; rotor core loosening; Bearing oil shortage; The power supply voltage is too high or unbalanced.
? Trouble Removal
Replace the bearing or clean the bearing; Overhaul the rotor core; Come on; Check and adjust the power supply voltage