External Fault via Option Card

What does Option External Fault mean?

An external fault condition was triggered by the upper controller via an installed option card. This indicates that a fault was detected in the external system connected to the option card, or the option card itself reported an issue to the main drive controller.

• The external control system (e.g., PLC) connected to the option card has signaled a fault condition to the drive via a specific option card input.
• Improper configuration of fault parameters (e.g., C3-xx, C4-xx) on the option card or in the drive's main control for external fault handling.
• Hardware failure or incorrect wiring of an external sensor or safety device connected to the option card's inputs.
• The option card itself is faulty or not seated correctly in its slot, leading to communication errors or false fault signals.
• Communication timeout or error between the option card and the host controller, which is interpreted as an external fault.

Click steps to track your progress.

1. 1

   1. Identify the specific option card installed and review its fault status via the drive's monitor menu (e.g., U5-xx for option card status).

2. 2

   2. Consult the option card's manual to identify the specific external fault input or communication register that triggered the fault.

3. 3

   3. Verify the external system (e.g., PLC, safety relay, sensor) connected to the option card is operating correctly and not sending a fault signal (e.g., measure 24VDC on input terminal).

4. 4

   4. Power down the drive and reseat the option card firmly in its slot. Inspect the option card for any physical damage or corrosion.

5. 5

   5. Check the option card's parameters (e.g., C3-xx, C4-xx) and the drive's parameters related to external fault inputs for correct configuration (e.g., input type, debounce time).

6. 6

   6. Temporarily disconnect the external control wiring from the option card's fault input terminals and attempt a drive reset to isolate the external system.