E.ECT
Wire break detection
Mitsubishi Electric · Mitsubishi A500 Inverter
What does E.ECT mean?
The inverter output is stopped if the encoder signal is lost (turned off) during orientation, PLG feedback, or vector control operations when using the FR-A5AP. This indicates a disruption in the feedback signal from the encoder.
Source: Mitsubishi A500 Inverter
Open Manual (Page 203)