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4.7
I< – Undercurrent [37]
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 flow 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 Ib (FLA). The
protective device can be configured for underload alarm (if the trip command is blocked)
and underload trip.
MRM4-3.7-ES-MAN
MRM4
4 Elementos de protección
4.7 I< – Undercurrent [37]
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