Opt Net Loss
Allen-Bradley · PowerFlex 520-series Adjustable Frequency AC Drive
What does F072 mean?
Control over the installed network option card's remote network has been interrupted. This means the drive has lost communication via its optional network adapter (e.g., EtherNet/IP, DeviceNet, Profibus), leading to a loss of remote control and monitoring capabilities. The drive's response (e.g., fault, stop, coast) depends on its communication loss settings.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Verify the network adapter setting parameters in the drive and the corresponding network device for correct configuration (e.g., IP address, node ID, subnet mask).
- 4
Check the external network status using network diagnostics tools (e.g., PING, network analyzer) to identify any network-wide issues affecting the option card.