Internal Control Circuit or Terminal Board Fault

What does Control Circuit Fault mean?

This fault indicates either a problem within the drive’s internal control circuit or an improper connection of the terminal board to the main control board. It suggests an internal hardware malfunction or an installation error that affects the drive's core functionality and control integrity.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Initialize the drive to its factory default settings to rule out parameter corruption as a cause.

2. 4

   If the fault persists after these troubleshooting steps, the drive unit may have an internal hardware failure and should be replaced.