7 Wiring Examples
7.1 Direct switching off with emergency stop switch
U V W PE
M
X1A
B+ B- T1 T2
X4BX4A X4C
STO1+
STO1-
STO2+
STO2-
SBC1+
SBC1-
SBC2+
SBC2-
Status STO
Status SBC
+ -
24Vdc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
X2A
Terminal strip X2B
Module type 1
Safety circuit
Control circuit
Diagnosis
Power circuit
Field bus Field bus
Figure 2: Direct switching off with emergency stop switch
ATTENTION
Operation of an emergency stop unit
At operation of an emergency stop unit, when both contacts are connect-
ed together against a positive supply signal, make sure that there are no
crossfaults. The wiring must be suitable arranged.
30
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