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

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Issue:
EPF1 fault on the Altivar Process Drive.

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

Environment:
All serial numbers for Altivar Process Drive

Cause:
N/A

Resolution:
Probable Cause

Event triggered by an external device, depending on user.
An external error has been triggered via Embedded Ethernet

Remedy

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