20
Operating instructions
Safety-monitoring module
SRB-E-232ST
EN
Wiring example SRB-E-232ST
0V / GND
R
H2
X7
X3
A1
S22
S11
A2
S21
X2
Q1 Q2
Y1
S12
+24VDC
KA
KB
F1
KD
KC
KC
KD
KA
KB
K2
K1
27
17
37 45
28
18
38 46
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.
