Input Phase Loss
Mitsubishi Electric · Mitsubishi FR-E800 Variable Frequency Drive
What does E.ILF mean?
This fault occurs when Pr.872 (Input phase loss protection selection) is enabled ('1') and one of the three phases of the input power supply to a three-phase model inverter is lost. The inverter immediately shuts off its output to prevent damage. This condition indicates a break, loose connection, or failure in one of the incoming power lines. Continued operation with a phase loss can lead to severe damage to the inverter's input rectifier bridge.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Verify that Pr.872 (Input phase loss protection selection) is set appropriately for the application; set to '1' for protection, or '0' if this function is intentionally disabled (not recommended for 3-phase).