Troubleshooting Yaskawa Drive Error oFC00 (Option Card Connection Error)

Getting the oFC00 error on your Yaskawa drive? This indicates an option card incompatibility in port CN5-C. Learn how to verify compatibility, check card seating, and resolve the error.

 

If your Yaskawa drive suddenly displays the oFC00 error, the drive has detected a hardware mismatch. Specifically, this error indicates an Option Card Connection Error occurring in the CN5-C port. In simple terms, the drive recognizes that an option card is plugged into the slot, but it either doesn't recognize the card type or knows that the card is incompatible with the drive's firmware/hardware version.

This is a protective fault designed to prevent electrical damage or control errors caused by attempting to run the drive with an unsupported or incorrectly installed accessory.

What Triggers the oFC00 Error?

• Incompatibility: The option card installed in the CN5-C slot is not supported by your specific drive model or firmware version.
• Physical Misalignment: The card is not fully seated in the CN5-C port, causing "garbage" data to be sent to the drive's processor.
• Faulty Card/Port: The communication circuitry on the option card or the drive’s internal port has failed.
• Firmware Mismatch: The drive's firmware is too old to recognize a newer version of the option card.

Step-by-Step Troubleshooting Guide

Safety Warning: Before attempting to remove or install any option card, ensure the drive is disconnected from all power. Wait at least 10 minutes for the internal DC bus capacitors to discharge.

1. Verify Compatibility

Before assuming a hardware failure, double-check the specs:

• Review your Yaskawa drive's technical manual. Ensure that the specific model number of your option card is explicitly listed as compatible with your drive model.
• If you recently upgraded the drive but kept the old option card, the new drive may simply not support that older accessory.

2. Reseat the Option Card

Sometimes, the fix is as simple as a bad connection:

• Loosen the mounting screws for the option card.
• Gently pull the card out of the CN5-C slot.
• Inspect the pins on the card and the port inside the drive for any bent pins or debris.
• Re-insert the card firmly into the CN5-C port. Ensure it clicks into place and is flush against the drive's control board housing.
• Tighten the mounting screws to ensure proper grounding of the card.

3. Check for Firmware Updates

If the card is known to be compatible but the error persists, your drive firmware might need an update:

• Check the "PRG" or "Firmware" version of your drive on the keypad.
• Consult the Yaskawa technical documentation to see if a newer firmware version is required to support that specific option card.

4. Isolate the Fault

• If you have another identical drive on-site, try swapping the option card into the other drive.
• If the card generates the same oFC00 error in a different drive, the card itself is defective.
• If the card works perfectly in the second drive, the issue lies with the CN5-C port on your original drive unit.

How to Clear the Error

Once you have addressed the incompatibility or re-seated the card:

1. Cycle the power to the drive (turn off, wait, turn on).
2. The drive will perform an automatic self-check during the startup sequence. If the card is compatible and seated correctly, the oFC00 error will clear automatically.

Final Note

Do not attempt to operate the drive with the option card if it is showing an oFC00 error. The drive is effectively "locking out" the card for your protection. If you need the functionality of that card, you must resolve the compatibility or seating issue before the drive will safely allow communication.