USB Communication Fault

What does E.USB mean?

The inverter output has shut off because USB communication was interrupted for a duration exceeding the time set in Pr.548 USB communication check time interval. This indicates a break in the USB connection or an incorrectly configured communication watchdog timer. Loss of communication will prevent external control and monitoring.

Complete Troubleshooting Guide

1. 1

   Verify that the USB communication cable is securely connected at both ends.

2. 2

   Check the setting of Pr.548 USB communication check time interval.

3. 3

   If intermittent disconnections are expected or tolerated, increase the Pr.548 setting or set it to "9999" to disable the communication check.