CPF22

Communication Option Card Code Number Fault

Yaskawa · E7 Drive

What does CPF22 mean?

An unrecognizable option board is connected to the control board, indicating a type mismatch or an unsupported option card. This prevents the drive from correctly interfacing with the option card, leading to functional limitations or failure.

Common Causes

  • An incorrect or incompatible communication option card inserted into the drive's option slot.
  • The drive's main control board firmware version is too old to recognize a newer option card.
  • The option card is damaged internally, preventing its correct identification code from being read.
  • Poor electrical connection between the option card and the main control board, preventing proper ID recognition.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    1. Power down the drive, remove the option card, and verify its part number against the drive's compatibility list in the manual.

  2. 2

    2. Inspect the option card connector and the drive's slot for bent pins or debris; clean and re-seat the card firmly.

  3. 3

    3. Check the drive's main control board firmware version and compare it with the option card's compatibility requirements.

  4. 4

    4. Try a known-good, compatible option card to confirm the issue is with the existing card or the drive's slot.

  5. 5

    5. If the card is confirmed incompatible, replace it with the correct model specified for the drive.

Browse all codes in this manual (64)
Verified technical data. Last updated: March 2026

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