english
Operating Instructions
Switching Repeater Type 9170/*1
17
7.2
Engineering
a) Mode of connection for line fault identification (volt-free contacts
at the input)
Open circuit identification:
22 k in parallel
Short circuit identification:
2.7 k 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.
7.3
Settings
Line fault detection (LF)
Line of action inverted (INV)
deactivated *)
activated
OFF *)
ON
Channel 1
Channel 2
*) Default factory setting
Changing settings via DIP switches during operation is also permitted in Zone 2 and on
circuits carrying intrinsically-safe input signals.
8
Operation and operational states
Output state
for “line of action inverted” (see 7.3)
Input
Input current
OFF
ON
Line fault detection LF = deactivated
Proximity switch high
impedance / Contact:
open / open circuit
I
E
1.2 mA
Relay not energized /
Electronic output
deactivated
Relay energized /
Electronic output activated
Proximity switch low
impedance / Contact:
closed / short circuit
I
E
2.1 mA
Relay energized /
Electronic output activated
Relay not energized /
Electronic output
deactivated
Line fault detection LF = activated
Open circuit
I
E
0.05...0.35mA
Relay not energized /
Electronic output
deactivated
Relay not energized /
Electronic output
deactivated
Proximity switch high
impedance / Contact:
open
I
E
= 0.35…1.2 mA
Relay not energized /
Electronic output
deactivated
Relay energized /
Electronic output activated
Proximity switch low
impedance / Contact:
closed
I
E
= 2.1…5 mA
Relay energized /
Electronic output activated
Relay not energized /
Electronic output
deactivated
Short circuit
R
E
100..360
Relay not energized /
Electronic output
deactivated
Relay not energized /
Electronic output
deactivated
+
-
LF1
LF2
INV1
INV2
ON
OFF
1
2
LF1
LF2
INV1
INV2
ON
OFF
1
2
LF1
LF2
INV1
INV2
ON
OFF
1
2
LF1
LF2
INV1
INV2
ON
OFF
1
2
2.7
k
k
22 k
