F71

Network Loss

Allen-Bradley · PowerFlex 40 Adjustable Frequency AC Drive

What does F71 mean?

This fault occurs when communication is lost with the drive over the configured network. This could be due to physical disconnection, network configuration issues, or a problem with the communication adapter.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Inspect communication port expanders or adapters if used.

Source: Allen-Bradley PowerFlex 40 Adjustable Frequency AC Drive
Open Manual (Page 17)