schmersal SRB-E-212ST, Operating Instructions Manual

Page: 8 / 12

8
Operating instructions
Safety-monitoring module
SRB-E-212ST / SRB-E-322ST
EN
Wiring example SRB-E-212ST
0V / GND
R
H2
X7 X3 A1 S22 S11
A2
S21 X2
Qt1 Y2 Y1
S12
+24VDC
KA
KB
KC
KD
F1
K1 K2
23 13
24 14
K2
K1
KD KC
KC
KD
KA KB
N
L1
KA
KB
a)
b)
c)
d)
e) f)
Wiring example SRB-E-322ST
0V / GND
R
H2
X7 X3 A1 S22 S11
A2
S21 X2
Qt1 Qt2 Y2
S12
+24VDC
KA
KB
F1
KD KC
KC
KD
KA
KB
K2
K1
23 13 33 41
24 14 34 42
K1 K2
L1
KA KB
N
KC
KD
a)
b)
c)
d)
e) f)
Key
a) Safety inputs
b) Safety outputs
c) Signalling outputs
d) Clock outputs
e) Processing
f) Power
7.2 Application example
Dual-channel control, shown for a guard door monitor with two
position switches where one has a positive break contact; with
external reset button
J
- Relay outputs: Suitable for 2-channel control, for increase in capacity
or number of contacts by means of contactors or relays with positive-
guided contacts Kontakten
- H2 = Feedback circuit
Signalling outputs must not be used in safety circuits.