Fig. 01 — Fanuc servo drive control board used in industrial robot automation
Fanuc
Servo amplifiers, alpha
ABB
IRC5 / DSQC drives
4 platforms
Seen at the bench
1 year
Parts & workmanship
Industrial RoboticsWelding / Material HandlingAssemblyPalletizingFanucABBYaskawaKollmorgenIndustrial RoboticsWelding / Material HandlingAssemblyPalletizingFanucABBYaskawaKollmorgen
N100 Where these valves sit
Four robot application contexts
Robot servo drives end up at the bench from a wide spread of automation cells. Below are the four common contexts.
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Welding robots
Spot welding, MIG, TIG, and laser welding cells. Body-shop welding lines on automotive assembly.
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Material handling
Pick-and-place, machine tending, palletizing, and depalletizing robots in distribution and manufacturing.
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Assembly & inspection
SCARA and 6-axis assembly robots, vision-guided inspection cells, and electronics-assembly automation.
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Press tending & foundry
Press-tending robots, die-casting tending, and foundry automation in heavy-duty manufacturing.
Each unit is opened, inspected, and rebuilt at the component level. Failed parts come from inventory or off donor units. Bench verification before ship.
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Power stage rebuild
IGBT modules, gate drivers, and DC bus capacitors replaced on Fanuc servo amplifiers, ABB drives, Yaskawa Sigma, and Kuka KSP / KSD hardware.
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Control board work
Component-level board repair, firmware checks, and feedback-channel verification on encoder interfaces.
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Cooling & power supply
Cooling-fan replacement, power-supply rebuild, and thermal-path inspection on cabinet-mounted hardware.
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Bench testing
Electronic test setup with dummy load and feedback emulation. Performance check before ship.
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Donor parts service
19,000+ unit in-house pool. Aftermarket parts and donor units for legacy robot amplifier hardware.
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Repair scope
Hardware repair only. Robot programming, mastering, and cell commissioning stay with the customer or integrator.
Failed IGBT modules, blown DC bus capacitors, and gate-driver damage. Often follows a power surge or cooling-fan failure on the controller.
Cooling & thermal
Cooling-fan failure, heatsink contamination from welding-area smoke, and thermal-stress damage on the power module.
Control electronics
Encoder-interface damage, communication-module failure, and capacitor aging on the control board.
Cabling and connectors
Damaged feedback cables on the robot dress-pack, encoder connector wear, and contamination on encoder pins.
N500 Workflow
From part number to ship-back
Same four-step path through the shop whether the drive came off a Fanuc R-2000iC welding cell or an ABB IRB palletizer.
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Get in touch
Call or email with the part number, robot make, and a photo of the nameplate if it helps.
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Bench review
Tech inspects the drive, runs it on the test bench, and confirms what failed.
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Cost & approval
We call back with the cost and a rough turnaround. Nothing is started without your sign-off.
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Repair, test, ship
Failed components replaced from inventory or off donors, drive verified on the bench, and shipped back.
N600 Common questions
Common questions about robot drive repair
Application-specific questions. For brand-specific FAQs, see the dedicated brand page above.
What types of robot servo drives do you repair?
Servo drives and amplifiers from Fanuc (alpha series amplifiers), ABB (IRC5 controller drives, DSQC modules), Yaskawa (Sigma series on Motoman robots), Kuka (KSP / KSD power packs), Allen-Bradley (Kinetix on robot cells), Indramat, Kollmorgen, and Baldor.
What robot makes come through the bench?
Drives come through from Fanuc, ABB, Yaskawa Motoman, Kuka, Kawasaki, Stäubli, Universal Robots, Adept, and Epson SCARA hardware.
Do you provide robot programming, mastering, or cell commissioning?
No. Hardware repair only. Robot programming, mastering, and cell commissioning stay with the customer or integrator. Parameters stored externally must be reloaded after hardware repair.
Can you repair legacy robot drives no longer supported?
Yes. Discontinued Fanuc alpha amplifiers, older ABB DSQC modules, and legacy Yaskawa drives come through routinely. The 19,000+ unit donor pool covers a lot of out-of-support hardware.
Do you provide on-site service?
No. Bench repair is the standard service: ship the drive to Westland, MI for rebuild and testing.
How long does a repair usually take?
Lead time varies job to job, partly because parts are often pulled from donor boards. Give us a call with the part number and the situation.
What is the warranty?
One year on parts and workmanship for repairs and rebuilt units. Standard exclusions apply for power surges, contamination, improper installation, and out-of-spec operation.
N700 More from NC Servo
Related repair coverage
Other industry pages and the brand pages most-tied to industrial robot drives.
Give us a call or send a part number with the robot make and the symptom. We'll check the donor pool, suggest a rebuilt match if we have one, and walk through repair or cross-brand options if we don't.
