How the load test works
The test sequence and a sample report.
Load testServo motor repair · Yaskawa
Yaskawa servo motor repair
Star Automations repairs Yaskawa servo motors, including Sigma series motors such as SGM, SGMAV, SGMJV and SGM7 frames. The motor is inspected, the failed parts are repaired or replaced, the encoder is aligned where needed, and the motor is proved on our servo motor test system with a no-load run and a full-load test before it leaves our Chennai bench. We are not a Yaskawa dealer or service partner; the brand name describes the motor we repair.
01Failures
Common Yaskawa servo motor failures
Encoder errors
Absolute encoder alarms and battery-backed position loss after power cuts or cable damage.
Bearing noise
High-cycle axes on packaging and pick-and-place machines wear bearings early.
Brake faults
Brakes that drag on release or slip when holding a load.
Connector and cable damage
Flexing in cable chains breaks feedback leads at the motor connector.
02Test bench
What the test bench checks
Yaskawa Sigma motors are read and run on our servo motor test system without the matching SERVOPACK, then loaded on the rig.
- Insulation resistance and hi-pot
- Winding resistance and balance
- Encoder or resolver feedback and commutation offset
- Brake release and holding, where fitted
- No-load run, then full-load run; speed and current against the nameplate
- Vibration and noise at rated speed
03Repair or replace
Repair or replace
Repair suits motors where the frame is sound and the fault is the encoder, bearings, brake or connector, which covers most Sigma motors that reach us.
Replacement suits motors with a damaged shaft, weak magnets or a winding that fails insulation tests. If the motor is an older Sigma generation, a migration may be worth planning while the repair keeps you running.
04Next
Before you send it
Servo motor repair Chennai
Support and pickup from our Chennai office.
ChennaiFree servo health check
Describe the symptom and get a likely fault class.
Health check05How to send
How to send the motor
You can send a servo motor from anywhere in India. Talk to us before you courier, so the unit is expected and logged on arrival.
Send the nameplate
WhatsApp a clear photo of the nameplate, the alarm code and what the machine was doing when it failed.
We confirm repairability
We tell you whether we can test and repair that model before anything is shipped.
Courier or pickup
Courier the motor to our Chennai bench, or ask us to arrange pickup where needed.
Inspection and quote
The motor is opened, inspected and photographed. You get the findings and a quote before work starts.
Repair, test, dispatch
Repaired, run-tested and load-tested, then dispatched with a printed test report.
Do you repair Yaskawa servo motors?
Yes, including Sigma series motors such as SGM, SGMAV, SGMJV and SGM7 frames. Send the nameplate and we confirm before you courier.
Can you fix absolute encoder position loss?
Yes. We check the encoder, its backup and the cable, repair or replace what failed, and align the encoder before the load test.
What should I send for a quote on a Yaskawa motor?
A photo of the nameplate, the alarm code and a note on the symptom. We confirm repairability before you courier.
Do you need a Yaskawa drive to test the motor?
No. Our servo motor test system runs Yaskawa motors without the original drive, then a load rig applies full load.
Is there a warranty?
A written warranty is given after a successful repair. Warranty terms are stated on each quotation.
Send the nameplate. We confirm repairability before you courier.
WhatsApp a nameplate photo and the alarm code to +91 97866 22233, or email info@starautomations.com.