Eaton EMR-4000 Installation, Operation And Maintenance Manual page 435

Motor Start / Transition Trips
The Motor will be tripped during the start phase, in case that:
The Start Control detects an unsuccessful Start. (Please see section Start Control Module)
There is an Incomplete Start Sequence. The device detects via an digital input, that the external process is not
properly started.
If a reverse direction is detected but reversing is not allowed.
If case of a Zero Speed Switch trip.
EMR-4000
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