51
External fault
Vacon · NXS NXP Drive
What does 51 mean?
A digital input configured as an external fault has been triggered, indicating a fault condition in an external device connected to the drive. This causes the drive to trip, preventing further operation until the external fault is cleared. The specific external device must be identified and resolved.
Complete Troubleshooting Guide
- 1
Identify which external device is connected to the digital input configured for external fault.
- 2
Troubleshoot and resolve the fault condition on the identified external device.
- 3
Ensure the digital input signal is reset before attempting to restart the drive.