Opt Comm Loss
Allen-Bradley · PowerFlex 520-series Adjustable Frequency AC Drive
What does F082 mean?
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].
Complete Troubleshooting Guide
- 1
Cycle power to the drive to attempt re-establishment of communication with the option card.
- 2
Power down the drive, then securely remove and reinsert the option card into its slot to ensure proper physical connection.
- 3
Consider modifying parameter C125 [Comm Loss Action] to adjust the drive's behavior upon internal communication loss (e.g., coast, ramp to stop, continue last command).
- 4
If the fault persists, replace the wiring connecting to the option card, the port expander (if used), the option card itself, or the control module as a last resort.