Repair
Servo Drives
Siemens SIMODRIVE · S120 · Fanuc αi · Yaskawa Sigma · Mitsubishi MR-J · Bosch Rexroth · Beckhoff AX5000
Comprehensive service of servo drive amplifiers — replacement of IGBT and power section capacitors, repair of control cards, service of absolute encoders, parameterization and testing. Every brand and every axis. No-obligation quote, 12-month warranty.
Diagnostics included in repair
Priority quote
12-month warranty
Courier pickup from all of Europe
Parameterization and axis testing
What do we repair in a servo drive?
IGBT and power section
Replacement of damaged IGBT transistors and power modules. Regeneration of DC-link section (electrolytic capacitors). We use original or equivalent components.
Control card (Servo Board)
Repair of servo drive control cards — CPU, memory, internal power supply, encoder interfaces (EnDat, Hiperface, Fanuc serial, SSCNET). Service of communication ports.
Absolute encoders
Repair and calibration of Heidenhain EnDat, Stegmann Hiperface, Fanuc CZF, Yaskawa absolute encoders. Service of connectors and damaged cables.
Braking section / resistor
Repair of braking section chopper transistors. Service of braking resistors and their thermostat. Replacement of regeneration section capacitors (4Q drives).
Capacitors and cooling
Preventive or corrective replacement of DC section electrolytic capacitors. Replacement of fans, cleaning and verification of cooling circuits.
Parameterization and commissioning
Drive parameter backup before repair. After repair: axis parameterization, current/speed/position loop tuning, motion tests and test results sheet issued.
Why EFIXLAB?
Specialized in servo drive service for CNC and robotic applications
- All brands and protocols — Siemens SIMODRIVE/S120, Fanuc αi/βi, Yaskawa Sigma, Mitsubishi MR-J, Bosch Rexroth IndraDrive, Beckhoff AX5000, Parker, Elmo and others.
- Encoders without secrets — we repair absolute Heidenhain EnDat 2.2, Stegmann Hiperface DSL, Fanuc CZF/CZE and Yaskawa 23-bit motor encoders.
- Full CNC loop — servo drive + encoder + cable in one service. No split responsibility.
- Dynamic testing after repair — drive loop test on a test bench before return, results recorded in a test sheet.
- Priority for machines in operation — we react immediately to stopped production.
- 12-month warranty — on all performed work.
How does repair work for a servo drive?
Request
online or by phone
Shipping
by courier
Kopia par.
+ diagnostics
Quote
no obligation
Repair
& axis testing
Return
with warranty
Report servo drive fault — no-obligation quote
Provide the brand, model and axis alarm description. Our servo drive specialist will get back to you with a diagnosis and quote.
Dziękujemy! We have received your request — our servo drive specialist will contact you shortly.Frequently asked questions
We repair servo drives from Siemens (SIMODRIVE 611D/U, S120), Fanuc (αi-SVS, βi-SVS), Yaskawa Sigma-7/5, Mitsubishi MR-J4/J3, Bosch Rexroth IndraDrive Cs/M, Beckhoff AX5000, Parker, Elmo, Kollmorgen and others.
SV (servo) alarm indicates a problem with the current or drive loop. LV (low voltage) — problem with power supply section or DC-link. OC (overcurrent) — problem with IGBT or motor overload. We diagnose every alarm type.
Yes — we repair absolute Heidenhain EnDat, Stegmann Hiperface, Fanuc CZF and other encoders. We can offer a loaner encoder during repair.
Diagnostics: 1–2 business days. Repair: 5–7 business days after approval and receiving necessary components. Express mode for stopped machines. As a rule — repair time may be significantly extended depending on component availability and repair complexity. Deadlines are agreed individually with the client.
Servo Drive Repair — All Manufacturers and Technologies
Servo drives from Siemens, Bosch Rexroth, Fanuc, Mitsubishi, Yaskawa, B&R, Lenze, Beckhoff, Parker, and others provide the precise motion control essential for modern manufacturing. These drives convert power supply voltage into precisely controlled current waveforms that drive servo motors with high dynamics, positioning accuracy, and speed control. Servo drive failures halt CNC machines, packaging lines, printing presses, and robotic systems — making rapid, expert repair critical for production continuity.
Common servo drive failures include power stage IGBT module degradation from thermal cycling and overcurrent events, gate driver circuit failures, DC bus capacitor aging, braking chopper circuit burnout, current sensor drift, encoder/resolver feedback interface faults, and control board failures (DSP processor, memory, communication interfaces). Higher-power servo drives are more susceptible to power stage issues, while compact drives may develop thermal-related failures from heat concentration.
EFIXLAB provides servo drive repair for all major manufacturers. Our comprehensive repair process includes power stage diagnostics under controlled conditions, gate driver signal analysis, DC bus capacitor measurement, feedback interface testing, control board functional verification, and communication protocol testing. We rebuild power stages with matched semiconductor modules, replace aging capacitors with long-life equivalents, and restore control electronics to full functionality.
Servo drive repair typically saves 35–65% versus new drive purchase, with savings increasing for higher-power and premium-brand drives. For discontinued servo drive models, repair avoids expensive drive system retrofit and reprogramming. All servo drive repairs at EFIXLAB include motor load testing and carry our standard 12-month warranty on all components and workmanship.