Flowserve PRS 9 - Manual (Page 11)

11
Attention
■ Fuse supply cable with T 2.5 mA.
■ When switching off inductive loads, voltage spikes are produced
that may impair the operation of control and measuring systems.
Inductive loads should be provided with commercial arc suppressor
RC combinations, e. g. 0.1 µF/100
Ω
.
Note
Connect only volt-free relay contacts to the control inputs. The cycling
timer PRS 9 supplies a 12 V DC control voltage.