Emergency: same day
For a line-down motor, where the fault and parts allow. WhatsApp us before you send it so the bench is kept free.
Servo drive repair
Servo drive repair, tested with a motor under load
Star Automations repairs servo drives and amplifiers at component level at its Chennai and Puducherry sites. We trace the fault in the power stage, DC bus, gate drive, feedback or control circuits, replace the failed parts, and run the drive with a motor under load before return. When a drive alarm may be caused by the motor, send both and we test them together.
Repair turnaround you can plan around
Send a photo of the nameplate first. We confirm whether the motor is repairable, and the quote, the same working day.
Urgent: 3 working days
Repair, encoder alignment and test, counted from the day the motor reaches the bench and the quote is approved.
Standard: 7 working days
Full repair, encoder alignment, run test under load and a printed test report.
- Free repairability check from a nameplate photo
- Printed test report with every motor
- Written warranty, terms stated on every quotation
- Pickup can be arranged; parts that must be imported are quoted with their own timeline
01Failure modes
Servo drive faults we repair
A drive alarm tells you where to look, not always what failed. Overcurrent can be the power stage, the gate drive, the motor or the cable.
- No power, or a blown IGBT or IPM power stage
- DC bus, overvoltage and regeneration faults
- Overcurrent and ground-fault alarms
- Encoder and feedback communication alarms
- Switch-mode power supply and gate drive failures
- Display, keypad and parameter memory faults
02Verification
How a repaired drive is tested
After component-level repair, the drive is powered up on a test rig or custom jig, the power stage and feedback circuits are checked, and the drive is run with a servo motor under load. Your drive comes back with its own settings and serial history, and a printed test report.
If the motor is the real cause, the drive repair alone will not hold. That is why we ask for the motor too when the alarm points to feedback or overcurrent. Motors are proved on our load test.
03Repair or replace
When to repair a drive
Repair
The drive is obsolete, the replacement lead time stops the line, or a new drive would need re-commissioning and new parameters.
Replace or upgrade
Repeated failures, a damaged chassis, or no parts for the power stage. See retrofit and migration.
04Brands
Servo drive brands we work on
ABB, Allen-Bradley (Kinetix, Ultra), B&R, Baumüller, Beckhoff, Bosch Rexroth and Indramat, Control Techniques, Danfoss, Delta (ASDA), Elau, Estun, Fanuc (alpha and beta amplifiers), Festo, Fuji Electric, Hiwin, Inovance, Kinco, Kollmorgen, Lenze, LS Electric, Mitsubishi (MR-J2S to MR-J5), Moog, NUM, Omron, Panasonic (MINAS), Parker, Sanyo Denki, Schneider Electric (Lexium), SEW-Eurodrive, Siemens (SINAMICS, SIMODRIVE), Stöber, Teco and Yaskawa (Sigma series).
Brand names describe the equipment we repair. Not listed? Send the nameplate and we check before you ship. Obsolete or hard-to-find drives can also be quoted as obsolete spares.
05How 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.
Free downloads for your maintenance file
Printable one-page sheets from our bench. More on the resources page.
Servo encoder alarm quick sheet
Common encoder and feedback alarms on Fanuc, Yaskawa, Mitsubishi and Siemens drives, what each usually points to, and what to check on the cable and connector first.
PDF · 1 page · 4 KB · free, no sign-up
Download PDFServo repair send-in form
Fill in and pack with the motor: nameplate details, fault seen, alarm code, drive model and the turnaround you need. Speeds up the quote and the repair.
PDF · 1 page · 4 KB · free, no sign-up
Download PDFWhich servo drive brands do you repair?
Multi-brand, including Fanuc, Yaskawa, Siemens, Mitsubishi, Allen-Bradley, ABB and B&R drives. Send the model and alarm code.
Can you repair a drive with an overcurrent alarm?
Usually. The cause is often the power stage or gate drive, and sometimes the motor or cable. Send the drive model and alarm code.
Will the drive keep its parameters?
Your own drive is repaired and returned, so its settings and serial history stay with it. Back up parameters before removal where you can.
Do you test drives with a motor?
Yes. Drives are run with a motor under load on a rig or custom jig before return.
Is there a warranty?
A written warranty is given after a successful repair. Warranty terms are stated on each quotation.
Servo drive families we repair, by brand
When the alarm could be the drive or the motor, send both. We test the pair together and tell you which one failed. Motor side: servo motor repair and encoder repair.
| Brand | Drive families | Motors they run |
|---|---|---|
| Fanuc | α and αi SVM, SPM and PSM modules; β and βi SVU and SVPM | α, αi, β and βi servo and spindle motors |
| Yaskawa | Sigma SGDA and SGDB; Sigma-II SGDH and SGDM; Sigma-III SGDS; Sigma-V SGDV; Sigma-7 SGD7S | SGM, SGMG, SGMAH, SGMAV, SGMJV, SGM7J and related |
| Mitsubishi | MR-J2, MR-J2S, MR-J3, MR-J4, MR-JE, MR-J5 | HC, HF and HG series |
| Siemens | Simodrive 611 analog, digital and universal; Sinamics S110, S120, V90 | 1FT5, 1FT6, 1FK6, 1FK7, 1FL6 |
| Allen-Bradley | Ultra 3000 and 5000, 1394, Kinetix 300, 350, 2000, 5500, 5700, 6000, 6200, 6500, 7000 | MPL, MPM, MPF, MPS, TL, VPL, 1326AB |
| Bosch Rexroth / Indramat | DDS, DKS, DKC, TDM, HDS, HCS, IndraDrive | MAC, MDD, MKD, MHD, MSK |
| Panasonic | Minas A, A4, A5, A6 and E series | MSMA, MSMD, MSME, MHMD, MDME |
| Delta | ASDA-A, A2, B2, B3 | ECMA |
| Omron | R88D-U and W, G, G5 (K), 1S | R88M |
| Schneider Electric | Lexium 05, 15, 32, LXM26 | BMH, BSH, BCH |
| Kollmorgen | Servostar, S300, S700, AKD | AKM, Goldline |
| Parker | Compax3, Aries, Gemini | MPP, MPJ, BE |
| Lenze | 9300, 9400, ECS, i950 | MCS, MDFK |
| SEW Eurodrive | Movidrive, Moviaxis | CM, DFS, CFM |
| B&R | ACOPOS, ACOPOSmulti, ACOPOS P3 | 8LS, 8MS |
| Beckhoff | AX5000, AX8000 | AM8000 |
| Sanyo Denki | Sanmotion Q and R | P, Q and R series |
| Baumüller | BUS series | DS series |
| Elau | MAX-4, PacDrive | SH, SM |
| Control Techniques | Unidrive SP, Unidrive M, Digitax | Unimotor |
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.