The servo drive is a kind of controller used to control the servo motor. It generally controls the servo motor by three methods: position, speed and torque, so as to achieve high-precision transmission system positioning. However, during the operation of the servo motor driver, some faults may occur. How do we judge the cause of the fault and how to deal with it? The following small series with everyone to understand is the servo motor driver repair detection method!
1. When the oscilloscope checks the current monitoring output of the driver, it is found to be all noise and cannot be read.
Cause: The current monitoring output of the servo motor is not isolated from the AC power supply (transformer).
Treatment method: The observation can be detected using a DC voltmeter.
2. Second, the motor runs faster than the other direction in one direction
(1) Cause of failure: The phase of the brushless motor is wrong. Treatment: Detect or find the correct phase.
(2) Cause of failure: When not used for testing, the test/bias switch is placed at the test position. Treatment method: Put the test/deviation switch in the deviation position.
