Allen-Bradley · PowerFlex 520-series Adjustable Frequency
Communications between the drive and its installed network option card have been interrupted. This indicates a problem with the internal data exchange between the main drive controller and the optional network interface card itself, affecting remote connectivity and control. The drive's response to this loss is defined by parameter C125 [Comm Loss Action].
Click steps to track your progress.
1. Power down the drive completely, then remove and re-seat the network option card into its slot, ensuring firm contact.
2. Check drive status and fault logs for additional diagnostic information related to option card initialization failures.
3. If a spare option card is available, replace the existing card and retest drive operation.
4. Verify that drive firmware and option card firmware versions are compatible according to manufacturer documentation.
5. Reset option card parameters to factory defaults (if supported by a specific parameter, e.g., P8-10 = 0) and reconfigure necessary settings.