Communication Option Fault

What does E.OP1 mean?

The inverter output is shut off due to a communication line error in the installed communication option. This can stem from incorrect option settings, a loose plug-in option card, or a damaged communication cable, including improper termination. Loss of communication functionality can disrupt system control.

Complete Troubleshooting Guide

1. 1

   Verify the option function settings and operation in the inverter parameters.

2. 2

   Ensure the plug-in option card is firmly seated in its connector.

3. 3

   Inspect the communication cable for any breaks or damage and confirm that the terminating resistor (if required) is correctly installed.

4. 4

   If the fault recurs after resetting the inverter, contact your sales representative.