EPF2

External Fault (Communication)

Schneider Electric · Altivar Machine ATV320 Variable Speed Drive

What does EPF2 mean?

An external interruption detected from a communication board. This indicates that a fault condition was received from an external system via a communication interface, causing the drive to trip. It implies an issue with the higher-level control system or communication link.

Complete Troubleshooting Guide

  1. 1

    Check the communication link between the drive and the external system (e.g., PLC, HMI) for activity.

  2. 2

    Verify the status and configuration of the external system for any fault indications.

  3. 3

    Inspect the communication board for proper installation, seating, and physical damage.

  4. 4

    Ensure communication parameters (e.g., baud rate, address) are correctly set on both ends of the link.