VFD (Variable Frequency Drive) Electronics Repair
Variable frequency drives take continuous electrical and thermal stress, and their power and control electronics eventually degrade. Sinsal diagnoses and repairs VFD electronics at the component level rather than treating every drive fault as a reason to replace the unit.
Equipment Covered
- VFD power stage boards
- Control and gate-driver boards
- Operator interface/keypad modules
- Input rectifier and capacitor banks
Common Faults
- Drive trips on a fault code with no obvious external cause
- Output to the motor is unstable or the drive fails to reach commanded speed
- Capacitor bank degradation after years of continuous operation
- Control board resets or loses parameters intermittently
Diagnostic Process
- Bench-isolated power-stage testing under simulated load
- Control-board and gate-driver signal testing
- Capacitor and rectifier condition assessment
- Root-cause isolation before repair scope is quoted
Brand Name Disclaimer
Sinsal services VFD hardware from multiple manufacturers on a case-by-case basis. Brand and model support is confirmed during assessment, and this page does not imply authorisation or partnership with any specific manufacturer.
Common Questions
Can a VFD tripping on an unclear fault code be diagnosed?
Yes — fault codes narrow the search, but Sinsal's assessment traces the actual electrical cause on the bench rather than relying on the code alone.
Have Equipment That Needs a Second Opinion?
Describe the equipment and the fault. Sinsal will confirm whether it's a fit for diagnostics and repair before any work begins.