External Fault Input

What does EF0 mean?

An EF0 fault is triggered by an external fault signal received from a communication option board. This mechanism allows an external system or safety device to signal a fault condition to the drive, causing it to stop according to the stopping method defined by parameter F6-03. This is typically used for integrating safety interlocks, external protection devices, or higher-level system faults into the drive's fault logic.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify the wiring and configuration of the external fault input connection to the communication board, ensuring proper signal levels and connections.

2. 4

   Check parameter F6-02 to confirm when the EF0 fault detection is active (e.g., always detected or only during operation).

3. 5

   Review parameter F6-03 to ensure the desired stopping method (Ramp to Stop, Coast to Stop, Fast-Stop, Alarm Only) for EF0 faults is selected and appropriate for the application's safety requirements.