I/O Fault (Digital/Analog/Relay)

What does 45 mean?

An Input/Output (I/O) fault has occurred, affecting digital inputs/outputs, relay outputs, or analog inputs/outputs. This means the drive cannot correctly receive external signals or send control commands, disrupting automation processes. This could be due to external wiring, sensor issues, or internal I/O circuitry failure.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify the functionality of connected sensors or actuators that interface with the problematic I/O.

2. 4

   If external checks yield no fault, replace the control card, as the I/O circuitry is part of it.