Third-Party Indramat Servo Drive Repair | NC Servo Technology
NC Servo Technology - Westland, Michigan 734-326-6666

Independent Repair Shop. Not Bosch Rexroth.

Third-Party Repair of Indramat Servo Drives

Independent third-party repair of Indramat servo drives spanning the full product history: TDM analog and digital controllers, TVD and TVR power supplies, KDS and DDS amplifiers, ECODRIVE, and the current Bosch Rexroth IndraDrive lines. SERCOS interface drives included. Backed by a 19,000+ unit in-house inventory. NC Servo is not affiliated with Bosch Rexroth or the original Indramat. Working on this kind of hardware since 1975.

Drives across the full lineage From early analog amplifiers to current IndraDrive families on the same bench.
SERCOS-equipped units Digital drives with SERCOS interface go on the same bench as everything else.
One-year warranty Standard on parts and workmanship for Indramat repairs and rebuilt units.

Brand Heritage

Indramat hardware spans four name changes

The drives in the field today carry whatever label they were stamped with when the unit was built. Same hardware lineage, different branding generation. We work on units from each one.

Original Indramat Pre-acquisition Indramat amplifiers and drive controllers, including the analog TDM line and early SERCOS-equipped digital drives Indramat developed.
Mannesmann Rexroth Indramat Transitional branding from the Mannesmann Rexroth ownership era. Same Indramat drives, different label.
Rexroth Indramat Post-2001 branding after Bosch acquired Rexroth. ECODRIVE, DDS, and DKC families show up in this generation.
Bosch Rexroth IndraDrive Current Bosch Rexroth electric-drive family that replaced the Indramat name on new production. HCS, HMV, HMS, and HCQ families.

Drive Repair

What NC Servo does with Indramat drives

Indramat drives are pure electronics work. Each unit gets opened on the electronics bench, the failed components get identified and replaced, then the drive runs on a load before it ships back.

Servo amplifiers & controllers

TDM analog and digital units, KDS / KDV / KDA / KDF amplifiers, DDS and DKC drive controllers. Power-stage diagnostics, gate-driver work, and control-board repair.

Power supplies

TVD, TVR, and TVM Indramat power supply families. Bus capacitor replacement, rectifier work, and output regulation checks under load.

ECODRIVE and IndraDrive

ECODRIVE Cs and DKC families, plus current IndraDrive HCS, HMV, HMS, and HCQ on the same bench as the legacy hardware.

Indramat Families

Indramat product families on the bench

We are a small repair shop, not a Bosch Rexroth distributor. The families below are simply the ones that come through the door often enough to be familiar. If your unit is not listed, send the part number anyway.

TDM controllers Analog and digital TDM servo controllers. The TDM 1.2-050-300 is a representative unit.
TVD / TVR / TVM supplies Indramat AC servo power supplies. The TVD 1.3-15-03 is a common variant on the bench.
DDS / DKC / KDS Digital drive families across the Mannesmann and Rexroth Indramat eras. Common in older CNC machines.
ECODRIVE / IndraDrive ECODRIVE Cs through current Bosch Rexroth IndraDrive HCS, HMV, HMS, and HCQ families.

Common Faults

What usually fails on an Indramat drive

A description of the symptom or fault code helps the diagnosis, but a part number is often enough. The categories below cover the kinds of trouble that show up on Indramat hardware.

Power stage Blown power transistors, gate-driver failure, DC bus overvoltage trips, or short-circuit faults on TDM, KDS, and DDS power stages.
Power supply (TVD / TVR / TVM) Aged bus capacitors, rectifier failures, output regulation problems, or no-output conditions on the supplies.
Feedback and SERCOS Resolver-interface faults, encoder signal issues, feedback channel failures, or SERCOS communication errors on digital units.
Physical condition Heat damage on cards, contamination on connectors, corroded mounting hardware, or evidence of prior repair attempts.

Repair Path

From part number to ship-back

Most jobs run through the same four steps. Lead time varies because some Indramat repairs need parts pulled off a donor unit, so we only commit to timing once a tech has the drive in front of them.

Get in touch

Phone or email with the Indramat part number, fault code if there is one, and a quick note on what the drive was doing.

Bench review

Once the unit arrives, a tech opens it, inspects boards and the power stage, and runs it on the electronics bench to confirm the fault.

Cost & approval

We call back with the cost and a rough turnaround. Nothing happens without your sign-off.

Repair, test, ship

Failed components are replaced from inventory or off donors, the drive is run under load, and the unit ships back.

Electronics test bench for servo drives and electronic controls

Bench Verification

Each Indramat drive runs on the bench before it ships

Repaired Indramat drives are checked on the electronics bench. Power-stage outputs are loaded, control signals are verified, feedback channels get exercised, and SERCOS-equipped units are communication-checked before shipment.

  • DC bus and gate-driver rails verified across the supply voltages.
  • Replaced components checked under load on the bench, not just at idle.
  • SERCOS communication checked on digital drives where the model supports it.
  • Repair backed by a 1-year warranty on parts and workmanship.

Inventory & Parts Pool

A 19,000+ unit pool with Indramat hardware in it

NC Servo's in-house inventory holds over 19,000 drives and valves accumulated since 1975, including a healthy share of Indramat units from each branding generation. That pool is where the shop pulls aftermarket parts and donor components for older TDM, TVD, DDS, and ECODRIVE families.

  • Aftermarket and donor parts for TDM, TVD, KDS, DDS, ECODRIVE, and IndraDrive families.
  • If we have a rebuilt match for your part number, trade in your old drive for a discount on the rebuilt.
  • No match on the shelf? We can suggest a comparable Indramat or cross-brand option, or repair yours.
  • Rebuilt units carry the same 1-year warranty as a fresh repair.
Indramat TVD 1.3-15-03 AC servo power supply with power terminals and diagnostic indicators
Bench equipment used for drive verification

Repair Scope

What NC Servo handles, and what your team handles

NC Servo handles the drive hardware: boards, power stages, capacitors, gate drivers, feedback interfaces. The drive comes back working in most cases; putting it back on the machine stays with your team or your integrator.

  • Power-stage repair, capacitor replacement, gate-driver work, and resolver-interface checks.
  • Most repaired drives ship back with the SERCOS parameters and motion programs intact.
  • Final reinstallation, system tuning, and machine validation stay on your side.
  • Repair backed by a 1-year warranty on parts and workmanship.

Indramat drive down?

Give us a call with the part number, a photo of the nameplate, or a fault code from the drive display. We will check the shelf, and if we have a rebuilt match you can swap your old one for a discount. If we do not, we can suggest a comparable drive or repair the one you have.

Give Us a Call

FAQ

Common questions about Indramat repair

A few things customers ask before sending a unit in. Anything not covered, give us a call at 734-326-6666.

Is NC Servo affiliated with Bosch Rexroth or the original Indramat?

No. NC Servo Technology is an independent, third-party repair facility and is not affiliated with, authorized by, or endorsed by Bosch Rexroth AG, Mannesmann Rexroth, or the original Indramat. All Indramat trademarks are the property of their respective owners.

Which Indramat drives do you cover?

Indramat TDM analog and digital servo controllers, TVD/TVR/TVM power supplies, KDS/KDV/KDA/KDF amplifier families, DDS, DKC, DKS, ECODRIVE, and the current Bosch Rexroth IndraDrive lines (HCS, HMV, HMS, HCQ). Send a part number to confirm coverage on anything not listed.

Do you handle SERCOS-equipped Indramat drives?

Yes. SERCOS interface drives go on the electronics bench like any other digital Indramat unit. The hardware repair gets the drive working again, and in most cases the unit ships back with its parameters intact.

Can NC Servo recover programs or parameters from a failed Indramat drive?

Most failures are hardware, and the drive comes back working with its program intact. Corrupted programs are rare; if one is already corrupted before the unit reaches us, that's the one thing we can't recover.

How long does an Indramat drive repair take?

It varies. NC Servo is a small independent shop, and lead time depends on the drive, what is wrong with it, and whether parts have to come off a donor unit. Give us a call once the unit ships in, and we can give a current estimate after a tech has looked at it.

What happens if the drive is beyond economic repair?

If the drive is not fixable, we will let you know and help source a replacement: a rebuilt match if we have one on the shelf, or a comparable Indramat or cross-brand alternative.

What is the warranty on an Indramat repair?

One year on parts and workmanship for repairs and rebuilt units. Standard exclusions apply for power surges, environmental damage, and software-driven faults.

NC Servo Technology is an independent, third-party repair facility and is not affiliated with, authorized by, or endorsed by Bosch Rexroth AG, Mannesmann Rexroth, the original Indramat, or any related entities. Indramat, IndraDrive, ECODRIVE, SERCOS, TDM, TVD, and all other brand names, model numbers, and trademarks referenced on this page are the property of their respective owners and are used solely to identify equipment serviced by NC Servo Technology. Final installation, parameter loading, system validation, and operational compliance remain the responsibility of the customer, OEM, or qualified integrator.

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