3UG4621/3UG4622 current monitoring relays
7.3 Functions
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
177
Function diagrams (from application of the rated control supply voltage U
S
= on)
Memory = no
Relay switching behavior = NC (closed-circuit
principle)
U
S
= on
Memory = no
Relay switching behavior = NO (open-circuit
principle)
U
S
= on
J = Currently measured current value
I = set threshold value for the current
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