Vacon · 100 FLOW Application Guide
A defective option board or slot has been detected in one of the drive's expansion slots (A, B, C, D, or E). This indicates a hardware issue with an installed option board or its physical slot on the control unit. Such faults can disable functionality provided by the option board or prevent drive operation.
Click steps to track your progress.
1. Power down the drive, then carefully remove the option board from the indicated slot (A, B, C, D, or E) and re-insert it firmly, ensuring it is fully seated.
2. Inspect both the option board's connector and the drive's slot connector for any bent pins, debris, or visible signs of damage.
3. If a spare option board of the exact same type is available, swap it into the suspected faulty slot to determine if the board itself is defective.
4. If the fault persists after board replacement, try moving the original option board to a different, compatible empty slot (if available and supported by configuration).
5. Check the drive's main control unit firmware version (P1.1.1) against the compatibility requirements for the installed option board.