Hardware Fault at Communication Start Up

What does CPF21 mean?

A hardware fault related to communication circuits was detected during the drive's communication startup sequence. This can prevent the drive from establishing network communication.

Click steps to track your progress.

1. 1

   Inspect the communication interface module (if applicable) within the Yaskawa P1000 AC Drive, ensuring it is correctly seated and free from visible damage or foreign objects.

2. 2

   Verify all communication wiring connected to the drive's communication port (e.g., Ethernet, RS-485) for correct polarity, termination (if required), and integrity, checking for loose connections or physical damage.

3. 3

   Check the drive's configured communication parameters (e.g., protocol, baud rate, network address) against the system specifications to ensure proper initialization of the communication hardware.

4. 4

   Confirm that the drive's grounding and the communication cable shield (if used) are properly connected to prevent electrical noise or ground loops that could interfere with communication hardware startup.