When repairing a GSK AC servo driver, safety must always be the first priority. After powering off the unit, it is necessary to wait several minutes to allow the internal DC bus voltage to fully discharge, as high voltage can remain inside the drive. Directly handling the device without proper discharge can result in electric shock or further damage to the equipment.

In practical maintenance work, the most important reference is the alarm code displayed on the driver. GSK servo drives typically indicate faults through specific error codes, such as overcurrent, overvoltage, or encoder faults. Technicians should use these codes to identify the general fault direction before taking further action. In many cases, the issue is not caused by the drive itself but by external factors such as a locked motor, loose encoder wiring, or unstable power supply.

After identifying the alarm, a basic inspection of external components should be carried out. This includes checking whether the servo motor windings are shorted, whether the encoder connections are secure, and whether the input voltage is stable. This step is critical, as many so-called “drive failures” are actually caused by problems outside the drive. Skipping this step can lead to misdiagnosis and unnecessary repairs.

Once external issues have been ruled out, the drive can be opened for internal inspection. Common failure points include the power module (IGBT), rectifier bridge, and electrolytic capacitors. A short circuit between output terminals usually indicates a damaged IGBT module, which must be replaced. Bulging or leaking capacitors should also be replaced immediately, as they can affect the stability and reliability of the drive. Additionally, the internal power supply board is another common source of failure; damage here may result in no display or failure to start.

After completing the repair, power should be restored carefully. It is recommended to perform an initial test without load to verify that the driver powers up correctly. Then, reconnect the motor and gradually test operation. At the same time, ensure that all parameters are correctly configured, including motor type and encoder settings, since incorrect parameters can also cause abnormal operation or alarms.

GR2000 Series AC Servo Motor Drive Unit
GR3000 Series AC Servo Motor Drive Unit
GS2000 Series AC Servo Motor Drive Unit
GS3000 Series AC Servo Motor Drive Unit
GE2000 Series AC Servo Motor Drive Unit
GE3000 Series AC Servo Motor Drive Unit
GD2000 Series AC Servo Motor Drive Unit
GD3000 Series AC Servo Motor Drive Unit

DA98A-04
DA98A-06
DA98A-08
DA98A-10
DA98A-12
DA98A-13
DA98A-14
DA98A-15
DA98A-20
DA98A-23
DA98A-25
DA98A-30
DA98A-30*
DA98A-50

DA98B-10
DA98B-12
DA98B-13
DA98B-15
DA98B-20
DA98B-23
DA98B-25
DA98B-30
DA98B-30*
DA98B-50

DA98C-20
DA98C-30
DA98C-50
DA98C-20A
DA98C-30A
DA98C-50A

DA98D-10
DA98D-12
DA98D-13
DA98D-15
DA98D-20
DA98D-23
DA98D-25
DA98D-30
DA98D-30*
DA98D-50

GS2030T
GS2045T
GS2050T
GS2075T
GS2100T

GS2019T-NP1
GS2024T-NP1
GS2025T-NP1
GS2030T-NP1
GS2045T-NP1
GS2050T-NP1
GS2075T-NP1
GS2100T-NP1
GS2198T-NP1

GS2019T-LA1
GS2024T-LA1
GS2025T-LA1
GS2030T-LA1
GS2045T-LA1
GS2050T-LA1
GS2075T-LA1
GS2100T-LA1
GS2198T-LA1


GE2030T-LA1
GE2045T-LA1
GE2050T-LA1
GE2075T-LA1
GE2100T-LA1
GE2198T-LA1

GE2030T-LB1
GE2045T-LB1
GE2050T-LB1
GE2075T-LB1
GE2100T-LB1
GE2198T-LB1

GE2030T-LP1
GE2045T-LP1
GE2050T-LP1
GE2075T-LP1
GE2100T-LP1
GE2198T-LP1

GR2019-LA1
GR2024-LA1
GR2025-LA1
GR2030-LA1
GR2045-LA1
GR2050-LA1
GR2075-LA1
GR2100-LA1
GR2198-LA1

GR2030T-LP1 
GR2050T-LP1 
GR2075T-LP1 
GR2100T-LP1 
GR2030T-LB1 
GR2050T-LB1 
GR2075T-LB1 
GR2100T-LB1
GR2030T-LA1 
GR2050T-LA1 
GR2075T-LA1 
GR2100T-LA1
GE2030T-LP1 
GE2050T-LP1 
GE2075T-LP1 
GE2100T-LP1 
GE2030T-LB1 
GE2050T-LB1 
GE2075T-LB1 
GE2100T-LB1
GE2030T-LA1 
GE2050T-LA1 
GE2075T-LA1 
GE2100T-LA1