Service Overview
Servo drives and amplifiers endure heavy thermal and electrical stress. NDTECH repairs high-power IGBT inverter modules, gate driver boards, DC bus capacitor banks, and feedback encoder circuits for AC/DC servo amplifiers, ensuring smooth torque acceleration and precise speed control.
Common Fault Symptoms We Troubleshoot & Fix
- Over-voltage (OV), Under-voltage (UV), or Over-current (OC) alarm trips
- Exploded IGBT power module or burnt gate driver resistors
- Encoder pulse count error / position loss during movement
- Servo motor shuddering, overheating, or humming noise
- No communication link with central PLC controller
Our Laboratory Diagnostic Capabilities
- High-Power IGBT Module & Bridge Rectifier Replacement
- Optocoupler & Gate Drive Isolation Circuit Testing
- Electrolytic Capacitor ESR & Ripple Voltage Diagnostics
- Dynamometer Motor Load Rig Simulation
- Absolute & Incremental Encoder Signal Calibrations
Supported OEM Brands
Yaskawa
Siemens Masterdrives
Fanuc Alpha/Beta
Mitsubishi MR Series
Delta
Lenze
Frequently Asked Questions
Q: How do you test servo drives after repair?
Every repaired drive undergoes dynamic load testing attached to matching servo motors on our dedicated test bench under continuous thermal and load monitoring.
Fast Diagnostic
Get Servo Drive & AC/DC Motor Repair Quote
Speak with our specialist engineer or submit your board details.
Call +91 9904841888