Flowserve NRS 2-4 - Manual (Page 10)

10
NRG 211 with Harting connector
Test loop
Alarm
Malfunction
Alarm
Malfunction
2 NRS 2-4 connected in parallel (redundancy)
Attention
n Protect the control circuit with a T 2.5 A fuse.
n
Connect screen only to the assigned terminal of the NRS 2-4.
n The screen must not make any other electrical contact.
n When switching off inductive loads, voltage spikes are produced that
may impair the operation of control and measuring systems. Inductive
loads should therefore be provided with commercial arc suppressor
RC combinations, e. g. 0.1 µF/ 100
Ω
.
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Key to wiring diagram