Option Card External Fault

What does EF0 mean?

An external fault condition has been received by the drive from the PLC via an option card. The drive's response (stopping or continuing to run as an alarm) depends on the F6-03 parameter setting. This fault typically points to an issue originating from an external device, a problem with the PLC program's fault handling, or a communication issue.

Complete Troubleshooting Guide

1. 1

   Identify and rectify the root cause of the external fault condition at the connected external device or system.

2. 2

   Remove the external fault input signal from the PLC or directly from the option card's input terminal.

3. 3

   Thoroughly review the PLC program for any logic errors related to external fault detection or handling and implement necessary corrections.