Estun servo motor - common faults and treatment methods of servo motors

1. Motor encoder alarm

1. The cause of the failure

(1) Wiring fault;

(2) electromagnetic interference;

(3) Encoder hardware damage caused by mechanical vibration;

(4) Pollution caused by the on-site environment.

2. Fault cleaning

(1) Check the wiring and sweep away the fault;

(2) Check whether the shielding is in place, check whether the wiring is reasonable and solved, and add filters to improve if necessary;

(3) Check the mechanical structure and improve it;

(4) Check whether the encoder is polluted or corroded (dust, oil, etc.) to strengthen protection.

3. Device and wiring specifications

(1) Use the original cable as much as possible;

(2) Separate the cable so that it is as far away from the polluted wiring as possible, especially the highly polluted wiring;

(3) Always use the internal power supply as much as possible. If the switching power supply is used, the filter should be used to ensure that the power supply reaches the clean level;

(4) Always ground the common end;

(5) Keep the encoder housing insulated from the machine structure and connected to the cable shield;

(6) If it is not possible to insulate the encoder, the cable shield can be connected to the ground (or special terminals) on the encoder housing and driver frame.

Second, the motor shaft is broken

1. The cause of the failure

(1) Unreasonable mechanical design leads to excessive radial load force;

(2) The load end is stuck or severely overloaded;

(3) The motor and reducer are not centered when assembling.

2. Fault cleaning

(1) Check the maximum acceptable radial load force in the motor sample and improve the mechanical design;

(2) Check the operation of the load end, confirm the actual process requirements and improve them;

(3) Check whether the load operation is stable, whether there is vibration, and improve the accuracy of mechanical assembly.

3. The no-load current of the motor is unbalanced, and the three-phase difference is large

1. The cause of the failure

(1) The end of the winding is wrongly connected;

(2) The power supply voltage is unbalanced;

(3) There are problems such as inter-turn short circuit and reverse coil connection in the winding.

2. Fault cleaning

(1) Review and correct;

(2) Measure the power supply voltage and try to eliminate the imbalance;

(3) Eliminate winding problems.

Fourth, the motor is running with abnormal noise

1. The cause of the failure

(1) The bearing is worn or there are foreign substances such as sand particles in the oil;

(2) The rotor core is loose;

(3) Lack of oil in the bearing;

(4) The power supply voltage is too high or unbalanced.

2. Fault cleaning

(1) Replace the bearing or clean the bearing;

(2) Overhaul the rotor core;

(3) Refueling;

(4) Check and adjust the power supply voltage.

5. It is difficult to start the motor, and when the rated load is loaded, the motor speed is much lower than the rated speed

1. The cause of the failure

(1) The power supply voltage is too low;

(2) Misconnection of the motor by the face connection method;

(3) Rotor welding or cracking;

(4) The coil of the rotor part is misconnected or reversed;

(5) Excessive increase in the number of turns when repairing the motor winding;

(6) Motor overload.

2. Fault cleaning

(1) Measure the power supply voltage and try to improve;

(2) correction of connections;

(3) Check the open weld and break point and repair it;

(4) Correct the misconnection if it is found;

(5) Restore the correct number of turns;

(6) Load shedding.

Estun servo motor - common faults and treatment methods of servo motors

Estun servo motor - common faults and treatment methods of servo motors

Sections viewed

Contact

working hours