PU stop
Parameter Unit (PU) Stop
Mitsubishi Electric · FR-D700 Basic Inverter
What does PU stop mean?
The [STOP] key on the operation panel of the Parameter Unit (PU) was pressed during External operation. This indicates a manual stop command was initiated from the PU while the inverter was configured for external control, causing the inverter to cease operation.
Source: Mitsubishi Electric FR-D700 Basic Inverter
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