Servo motor failure analysis (3)
4. When the motor is running, the sound is abnormal and there is abnormal noise.
1. Cause of failure
1 bearing wear or foreign matter such as sand in the oil;
2 the rotor core is loose;
3 bearings are short of oil;
4 The power supply voltage is too high or unbalanced.
2. Troubleshooting
1 replace the bearing or clean the bearing;
2 overhaul the rotor core;
3 refueling;
4 View and adjust the power supply voltage.
5. The motor is difficult to start. When the rated load is used, the motor speed is lower than the rated speed.
1. Cause of failure
1 power supply voltage is too low;
2-sided connection motor misconnection;
3 rotor open welding or cracking;
4 rotor partial coils are connected and reversed;
5 When the motor winding is corrected, too many turns are added;
6 Motor overload.
2. Troubleshooting
1 measure the power supply voltage, try to improve;
2 correct the connection;
3 view the open welding and breakpoints and correct them;
4 Correct the misconnections and correct them;
5 restore the correct number of turns;
6 load shedding.
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