71
Brake control
Kone · CMXC-022 Frequency Control Upgrade Kit
What does 71 mean?
An error has been detected within the brake control circuit of the R&M Materials Handling Frequency Converter, indicating a malfunction that could prevent the brake from engaging or disengaging properly. This poses a significant safety risk, especially in hoist applications.
Common Causes
- Error detected in the brake control circuit
Repair Steps & Checklist
Click steps to track your progress.
- 1
Check and repair the brake control circuit wiring
- 2
Measure the brake coil resistance and compare to specifications
- 3
Replace the brake if its resistance is outside specifications
- 4
If the problem recurs, replace the inverter
Verified technical data. Last updated: March 2026
Related Faults
Source: Kone CMXC-022 Frequency Control Upgrade Kit