Common faults and maintenance methods of servo driver

Servo driver is a controller used to control servo motor, which is similar to the frequency converter of ordinary AC motor, and is a part of servo system, mainly used for high-precision positioning system. Usually, speed and torque are controlled by position and servo motor to achieve high-precision positioning of transmission system, which is currently the product of transmission technology. The following are several methods of servo driver maintenance.

1. The energy-saving lamp is green, but the motor does not move

(1) Servo driver fault reason: motor movement in one or more directions is prohibited.

Processing method: check+INHIBIT and – INHIBIT ports.

(2) Servo driver fault reason: the command signal is not at the position of the drive signal.

Processing method: connect the command signal to the drive signal.

2. After powering on, the drive energy-saving lamp does not light up

Fault cause: the power supply voltage is too low, less than the voltage value.

Handling method of servo driver: check and increase the power supply voltage.

3. When the motor rotates, the energy-saving lamp flashes

(1) Fault cause: HALL phase error.

Treatment method: check whether the motor phase setting switch is correct.

(2) Fault cause: HALL sensor failure.

Treatment method: detect HallA, HallB and HallC voltage when the motor is rotating. The voltage value should be between 5VDC and 0.

4. The energy-saving lamp is always red

Cause of fault: faulty.

Treatment method: cause: overvoltage:. undervoltage. short circuit. overheat. drive prohibited. HALL invalid.