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.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

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

2. 4

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