Servo Drive & Servo Motor Repair Singapore
A faulty servo drive or motor can halt an entire production line. QC Engineering provides component-level servo repair services for all major industrial brands — faster and more cost-effective than OEM replacement.
Our engineers have extensive experience with servo drive electronics including IGBT power stages, encoder interfaces, control boards and communication modules — returning your equipment to full specification.
Common Servo Fault Codes We Fix
- Overcurrent / Overvoltage / Undervoltage faults
- Encoder feedback error (E5, E6, F7 etc.)
- Excessive position error / following error
- Motor overheat / thermal fault
- Dynamic brake / regeneration fault
- Communication loss to controller
- Drive powers on but motor does not move
- Hunting, oscillation or unstable motion
Why Repair Instead of Replace?
OEM replacement costs for industrial HMIs often range from SGD 3,000–15,000+. Our repair service typically costs a fraction of that, with the same reliability backed by our warranty. For obsolete or discontinued models, repair may be the only viable option.
Service Levels
| Repair Type | Description |
|---|---|
|
Standard Service |
14-day turnaround — includes full electrical test on load bank before return. |
|
Express Service |
3-day turnaround — subject to parts availability. Contact us to confirm. |
|
No Fix, No Fee |
If we cannot repair your servo drive or motor, no inspection fee is charged. |
Brands We Repair
| Brands | ||
|---|---|---|
|
Siemens (SIMODRIVE, SINAMICS) |
Yaskawa (Sigma series) |
Fanuc (αi, βi series) |
|
Mitsubishi (MELSERVO) |
Bosch Rexroth / Indramat |
Parker (Compax) |
|
Lenze |
Beckhoff |
SEW-Eurodrive |
|
Kollmorgen |
B&R |
Delta |
Servo Drive Repair Services
| Repair Type | Description |
|---|---|
 Power Board Repair |
Diagnose and repair the main power stage — including IGBT modules, gate drivers, rectifier bridges and DC bus capacitors that cause overcurrent or overvoltage faults. |
 Control Board Repair |
Repair the servo control PCB — failed DSP/microprocessors, DAC circuits, feedback circuits and onboard memory. |
 IGBT / Transistor Replacement |
Replace faulty IGBT modules and power transistors — the most common cause of drive failure after electrical surge or short circuit events. |
 Encoder Interface Repair |
Restore encoder feedback circuits that cause position errors, E5 or E6 fault codes, or erratic servo movement. |
 Parameter Backup & Restore |
Back up servo parameters before repair and restore them precisely — ensuring the drive returns to your exact machine settings. |
 Regenerative Resistor & Brake Circuit |
Repair or replace regenerative resistor assemblies and dynamic brake chopper circuits. |
 Communication Card Repair |
Restore fieldbus communication modules — PROFIBUS, DeviceNet, EtherCAT, MECHATROLINK — that have failed or lost connectivity. |
 Fan & Cooling Repair |
Replace failed cooling fans and inspect thermal management systems to prevent recurrence of thermal shutdowns. |
 Display / Keypad Repair |
Repair operator panel displays and keypad assemblies on servo drives with integral HMI panels. |
Servo Motor Repair Services
| Repair Type | Description |
|---|---|
|
Winding Repair / Rewinding |
Test and repair motor windings damaged by overload, insulation breakdown or moisture ingress. |
|
Encoder Replacement |
Replace absolute or incremental encoders — optical or magnetic — that cause position feedback errors. |
|
Bearing Replacement |
Replace worn or failed motor bearings causing noise, vibration or increased current draw. |
|
Brake Repair |
Repair or replace electromagnetic holding brakes on vertical axis servo motors. |
|
Shaft Seal Replacement |
Restore IP-rated shaft seals on motors used in wash-down or contaminated environments. |
