External Fault Digital Input Triggered

What does 51 mean?

A digital input configured as an external fault has been triggered, signaling an external condition that requires the drive to fault. The specific external condition depends on the system integration and what device or sensor is connected to this input.

• External control signal connected to digital input has triggered a fault (P0700).
• Emergency stop circuit activated.
• External safety interlock signal.

Click steps to track your progress.

1. 1

   Check the signal wiring connected to the External Fault digital input for continuity and proper voltage levels (e.g., 24VDC).

2. 2

   Inspect the external fault input source and its associated safety devices or sensors to determine why the fault was triggered.