3
Mounting and installation
Festo – GDCP-CAMC-G-S1-EN – 1412b – English
27
3.3
Typical circuits
3.3.1
Safe Torque Off (STO)
1
2
3
4
5
L 230 V AC
N 230 V AC
PE
24 V DC
T1
CMMP-AS-…-3A-M3
1
2
7
8
9
L1
PE
+24 V
G
N
D
24 V
N
-X9
21
9
DI
N4
DI
N5
-X1
1
3
2
4
ST
O-A
ST
O-B
0V-B
0V-A
-X40
Output
PL
C:
Output stage enable
Output PL
C:
Controller enable
Only the relevant connections are drawn!
Without cross-circuit detection!
0 V DC
5
6
C1
C2
Input
PL
C:
Safety acknowledgment T1
S1
Sender
Receiver
OSSD1
OSSD2
S1
S1
S1
Safety
switch device
1
3
2
4
1
3
4
2
1
3
4
2
1
3
4
2
or
or
1
Motor controller with safety module
(only relevant connections illustrated)
2
Emergency stop switch
3
Protective door
4
Light curtain
5
Safety switching device
Fig. 3.2
Connection of the safety module CAMC-G-S1, example of single-phase motor controller
CMMP-AS-...-3A-M3
The safety function Safe Torque Off (STO) can be requested via various devices. The switch S1 can be,
for example, an emergency stop switch, a safety door switch, a light barrier or a safety switching
device. The safety request is made in 2 channels via switch S1 and routes to the 2-channel switch-off of
the output stage. Once the output stage has been switched off, it is output by the floating contact
C1/C2.
