Drives error Ax no.: 71
KSD Microcontroller Crash
Kuka · KR C2 Robot Controller
What does Drives error Ax no.: 71 mean?
The microcontroller within the servo drive module for the specified axis (Ax) has crashed. This indicates an internal hardware or firmware malfunction of the KSD.
Repair Steps
- 1
Check the KSD module for visible damage or loose connections.
- 2
Restart the controller.
- 3
If the error persists after restart, exchange the KSD module.
Verified technical data. Last updated: March 2026
Source: Kuka KR C2 Robot Controller