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
Check the communication link between the drive and the external system (e.g., PLC, HMI) for activity.
- 2
Verify the status and configuration of the external system for any fault indications.
- 3
Inspect the communication board for proper installation, seating, and physical damage.
- 4
Ensure communication parameters (e.g., baud rate, address) are correctly set on both ends of the link.