Code

Name

Causes

Possible Solutions

EF4

External Fault (Terminal S4)

MFDI terminal S4 caused an external fault through an external device.

  1. Find the device that caused the external fault and remove the cause.

  2. Clear the external fault input in the MFDI.

The wiring is incorrect.

Correctly connect the signal line to MFDI terminal S4.

External Fault [H1-04 = 2C to 2F] is set to MFDI terminal S4, but the terminal is not in use.

Correctly set the MFDI.
Note:

If the drive detects this error, the terminal assigned to H2-01 to H2-04 = 10 [MFDO Function Select = Alarm] will be ON.