Stahl 9170/12-12-13, Operating Instructions Manual

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Operating Instructions english
8
Switching Repeater Type 9170/*2
7 Commissioning
7.1 Connections
Types 9170/*2-12-13
(24 V DC power supply)
Types 9170/*2-12-23
(120 V AC power supply)
7.2
Engineering
a) Mode of connection for line fault identification (volt-free contacts
at the input)
Open circuit identification: 22 k
Ω
(or 33 k Ω ) in parallel
Short circuit identification: 2.7 k
Ω
in series
The loading has to carry out in direct proximity of the contact.
b) Mode of connection for inductive loading at the output:
Inductive loadings have to be connected with a free
wheel diode.
We do not recommend to use a loading via varistor.
+
-
Hazardous location Safe area
2.7
k k
Ω
22 k
Ω
L-
L+