4.7 37 – Underload Module
Functional Description
When the motor is running, a current reduction might indicate a malfunction in the load.
Underload protection recognizes mechanical problems, such as a blocked ow or loss of
back pressure in a pump, or a broken drive belt or drive shaft.
Refer to the underload protection limit – the left vertical line in the Underload and Jam Trip
Function example. In the example, the underload trip is set at 60% of FLA. The protective
device can be congured for underload alarm and underload trip.
166 www.eaton.com EMR-3MP0
4 Protective Elements
4.7 37 – Underload Module
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