Servo driveIllustrative example
Servo sürücü
The servo drive raises an overcurrent alarm when enabled; the axis does not move.
Duration: 2-4 business daysUpdated: 2026-07-07
Before
Faulty — board out of service
After
Repaired — tested under load
Fault
The servo drive raises an overcurrent alarm when enabled; the axis does not move.
Analysis
A no-motor test showed the overcurrent persisting. The output stage and driver circuit were inspected; one IGBT and the gate-driver supply regulator were faulty.
In servo drives, the encoder feedback circuit is also checked; loss of control can cause secondary faults.
Repair Steps
- 1Output-stage measurement
- 2Gate-driver + supply repair
- 3Encoder interface check
- 4Test under load
Changed Components
- IGBT/MOSFET output device
- Gate-driver supply regulator
Test Result
Axis rotated smoothly; current and encoder feedback verified.
This is an illustrative repair flow that shows the process; no real customer/board information is shared.
Related Topics
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