Kone · CMXC-022 Frequency Control Upgrade Kit
The overvoltage regulator circuit within the R&M Materials Handling Frequency Converter has been continuously active for more than 5 seconds. This indicates a persistent overvoltage condition that the regulator is struggling to manage, suggesting an ongoing issue with supply voltage or regenerative energy.
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Measure incoming AC supply voltage at the frequency converter's input terminals (L1, L2, L3) and compare against the drive's nominal voltage rating.
Inspect the braking resistor(s) and associated wiring for damage, loose connections, or signs of overheating. Verify the resistance value if safely accessible.
Verify frequency converter parameters, specifically deceleration times and braking chopper/resistor settings, to ensure they are configured correctly for the application and load.
Monitor the DC bus voltage using the frequency converter's display or an external multimeter during operation, particularly during deceleration cycles, to observe voltage peaks.