F71

Net Loss

Allen-Bradley · PowerFlex 4 Adjustable Frequency AC Drive

What does F71 mean?

This fault occurs when communication is lost with the network connected to the drive. This means the drive is no longer receiving commands or transmitting data via its communication interface.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Ensure all network communication parameters (e.g., A103 [CommData Rate], A104 [CommNode Addr], A107 [CommFormat]) are correctly configured and match the network settings.

Source: Allen-Bradley PowerFlex 4 Adjustable Frequency AC Drive
Open Manual (Page 15)