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What is the External Error (EPF1) fault on the Altivar Process Drive?

Published date: 22 May 2020

EPF1 fault on the Altivar Process Drive.

Product Line:
Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)

All serial numbers for Altivar Process Drive


Probable Cause
  • Event triggered by an external device, depending on user.
  • An external error has been triggered via Embedded Ethernet
  • Check External Fault settings
    • [Complete settings] -> [Error/Warning handling] -> [External error]
    • External error assignment. If the assigned bit state is:
      • 0: there is no external error.
      • 1: there is an external error (EPF1)
  • Check Embedded Ethernet settings
    • [Communication] -> [Comm parameters] -> [Embd Eth Config]
    • A faulty or duplicate address can cause conflicting issues.
    • Try setting a different fixed IP address
    • Check Network or PLC settings for any other conflicts
    • Check for any possible electrical interferences

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