External Fault 1, Input Terminal S1

What does EF1 mean?

An external fault signal has been received by the drive via digital input terminal S1. The specific cause depends on the external device wired to S1 and its fault condition.

• External device wired to input terminal S1 triggered its fault condition

Click steps to track your progress.

1. 1

   Verify the status of the external device connected to input terminal S1.

2. 2

   Check the wiring integrity between the external device and terminal S1.