Applicable Systems
ThyssenKrupp Control System
Symptoms
ThyssenKrupp Evolution drive controller reports fault during normal operation indicating motor drive or power section issue requiring drive module inspection.
Possible Causes
- Power module IGBT short circuit detected by gate driver desaturation protection
- Motor phase current imbalance exceeding 15% threshold
- DC bus undervoltage during heavy load start due to supply voltage drop
- Thermal sensor in drive heat sink tripping at 85 degrees C
Troubleshooting Steps
- Step 1: Read the Evolution drive fault display on the controller front panel
Fault code and brief description shown on the 4-line LCD display - Step 2: Measure DC bus voltage at the drive terminals during operation
DC bus voltage stable between 540-650V DC for 400V AC supply - Step 3: Check motor phase currents with clamp meter during rated load
Phase currents balanced within 5% of rated value - Step 4: Inspect drive cooling fan operation and heat sink temperature
Fan running at rated speed, heat sink below 70 degrees C at full load
How to Reset
Reset by: 1) Allow drive to cool if thermal fault. 2) Power cycle the drive module. 3) Clear fault from Evolution controller. 4) Run test trip to verify correct operation.
Common Replacement Parts
- EVO-PWR-100: Evolution power module assembly (Verify voltage class and current rating before ordering)
Frequently Asked Questions
- Q: What causes repeated thermal trips on the Evolution drive?
Repeated thermal trips typically indicate inadequate ventilation, oversize duty cycle, or degraded thermal paste between IGBT and heat sink. Inspect and replace thermal interface material if aged over 5 years.
Source: ThyssenKrupp Evolution Drive Technical Manual
Category: Elevator