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Connection -– Wiring
RS4 Pin-Ref
Ub
GND
-
Restart
-
Alarm2
OSSD1
OSSD2
Alarm1
FP1
FP2
FP3
FP4
-
-
-
-
12
RS4-Pin
RSL 420 Pin-
3
UB
1
GND
Shield
FE
2
RES1
-
RES2
15
MELD
11
OSSDA1
12
OSSDA2
5
A1
4
F1
6
F2
7
F3
8
F4
-
F5
-
RES2
-
OSSDB1
-
OSSDB2
RSL 410/
Ref
X
X
X
X
X
X
X
X
X
X
X
X
Wiring
Description
Supply voltage
GND / Ground
Functional
earth
Start/restart
Start/restart
Device mes-
sage/interfer-
ence
Safety-related
switching out-
puts
Safety-related
switching out-
puts
Warning field
occupied
Field pair
changeover
Field pair
changeover
Field pair
changeover
Field pair
changeover
Field pair
changeover
Start/restart
Safety-related
switching out-
puts
Safety-related
switching out-
puts
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