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
We repair servo drives and amplifiers at component level: power stage, DC bus, feedback input, control and I/O faults. Every repaired drive is tested with a servo motor before dispatch and returned with a printed test report. Send the model and the alarm code to get a quote. Repair warranty is 3 months to 1 year, stated on each quotation.
- 25+years of servo repair, since 2000
- 3,000+customers across India
- 100+servo brands covered by our universal servo motor test equipment
- 5sites: Puducherry, Chennai, Bengaluru, Hyderabad, Delhi
- Same dayemergency repair option*
*Where the fault and parts allow. Every repaired unit returns with a printed test report.
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
Repair by brand: Panasonic · Yaskawa · Fanuc · Allen-Bradley · Mitsubishi · Siemens · Delta · Omron · Bosch Rexroth · Kollmorgen
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 PDFServo drive series and models we repair
These are the main series we repair, including older and discontinued versions. The list is a guide, not a limit: if your model is not listed, send it to us.
Siemens
SINAMICS S120, S110, V90; SIMODRIVE 611 and 611U
Allen-Bradley
Kinetix 300, 350, 2000, 5500, 5700, 6000, 6200, 6500, 7000; Ultra3000, Ultra5000
Mitsubishi
MR-E, MR-J2, MR-J2S, MR-J3, MR-J4
Omron
R88D-G, R88D-GT, R88D-1S, R88D-W
Panasonic
MINAS A4, A5, A6, E series, MSDA, MSD
Yaskawa
Sigma-5, Sigma-7, SGDM, SGDH, SGDV
Delta
ASDA-A, A2, B, B2, AB
Bosch Rexroth
IndraDrive, EcoDrive, HDS, HCS, KDS
Kollmorgen
AKD, S300, S700, SERVOSTAR
Fanuc
αi and βi servo amplifiers (SVM, SVU), spindle amplifiers (SPM)
B&R and Beckhoff
B&R ACOPOS, ACOPOSmulti, ACOPOS micro; Beckhoff AX5000, AX8000
Others
Schneider Lexium 05, 15, 23, 32, 62; Parker Compax3; Baldor and ABB MicroFlex; Lenze; Sanyo Denki
NEWAlso from Star
More specialist repair and parts in stock
Power electronics
- Inverter repair — VFDs and drives
- DC drive repair — SCR and thyristor drives
- Welding machine repair — power boards and controls
- Battery charger repair — industrial chargers
- Gefran servo motor repair — with test video
Specialist repair and services
- Machine vision camera repair — cameras and controllers
- Valve actuator repair — electric actuators
- Vacuum pump controller repair — controllers and drives
- Load cell and weighing electronics repair — indicators and amplifiers
- Laser power supply repair — drivers and supplies
- Industrial chiller electronics repair — controllers and boards
- Servo and planetary gearbox repair — precision gearboxes
- Motor condition monitoring — predictive maintenance
- Servo and encoder cables — made to order
- Obsolete servo replacement kit — adapter, motor and drive
- Advance exchange — drives, encoders and teach pendants
New in stock
- Omron FH-1050-10 vision controller — in stock
- Omron NX1P2 PLC with OD5121-1 output units — in stock
- All industrial automation spares in stock — search by part number
→How it works
From nameplate photo to a tested motor in 7 steps
One route for servo motors, encoders and drives. You see the price before any work starts, and the report before the unit leaves our bench.
- 1 · Nameplate photoSend it on WhatsApp or the form
- 2 · Repairable? QuoteUsually the same working day
- 3 · Courier or pickupThe unit reaches our bench
- 4 · Bench diagnosisInsulation, windings, brake, encoder
- 5 · RepairFailed parts, bearings, seals, brake
- 6 · Align and run-testEncoder aligned; no-load and load run
- 7 · Report and dispatchPrinted test report with the unit
- Line down?Servo Swap ships a tested unit first. How Servo Swap works
EmergencySame day*
Urgent3 working days
Standard7 working days
*Where the fault and parts allow. Turnaround counts from when the unit reaches our bench and the quote is approved.
Which 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.
We repair these brands' units
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 |
Also repaired at Star Automations: power electronics, e-mobility and solar
The same bench that repairs servo drives and VFDs also repairs the power electronics in inverters, UPS units, EV chargers and BMS boards. Send the model and fault and we confirm repairability before you ship.
Inverter repair
Solar, hybrid, off-grid and home inverters.
UPS repair
Online, line-interactive and industrial UPS boards.
Lithium battery and BMS repair
BMS boards, packs and chargers.
EV charger repair
Portable, AC wall-box and small vehicle chargers.
EV traction motor and resolver
PMSM and BLDC traction motors, resolver and encoder faults.
BLDC and EV controller repair
Curtis, Zapi, hub-motor, EC fan and industrial BLDC drivers.
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.
Need it faster? See servo amplifier repair and exchange, or KUKA and Fanuc teach pendant repair.