Flowserve NRS 2-3 - Manual (Page 12)

12
Wiring
– continued –
Wiring diagram for design “c”/ “d”
Design “c”/“d”
Wiring is effected via the 32 pole screw-type connector.
Use screened two-core cable, conductor size 0.5 mm², max. cable length 150 m for
the supply of the level transmitter.
Fig. 4
Attention
■ Protect the control circuit with a 2.5 A (slow blow) fuse.
■ Connect screen only to the assigned terminal of the NRS 2-3.
■ The screen must not make any other electrical contact.
■ 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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