New Type Code

What does 251 mean?

The frequency converter has detected a change in its internal type code, typically occurring after a control card replacement or a full drive swap. This alarm acts as an informational message signaling a significant change in the drive's identity or configuration. While not an immediate operational fault, it indicates a need to verify parameter settings for the new hardware.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Save the updated parameter set to the LCP and/or via serial communication for future reference.

2. 4

   Perform a functional test of the drive and motor to ensure correct operation with the new type code and parameter settings.