Safety Request Via Devices With Switch Contacts - Festo CAMC-G-S3 Manual

3 Mounting and installation
3.3.1

Safety request via devices with switch contacts

The safety function (e. g. STO – Safe Torque Off or SS1 – Safe Stop 1) is triggered by an input device for
the safety request. The safety request is sent along 2 channels via the input device S1 and routes to the
2-channel switch-off of the output stage of the motor controller.
L
N
PE
24 V DC
0 V DC
S1
2
1
1
Only relevant connections drawn
1
T1: Motor controller with safety module
(only relevant connections shown)
Fig. 3.2 Sample circuit with switch contacts
Notes with regard to the sample circuit:
– In the input circuit for the S1 switches, the safety module CAMC-G-S3 detects cross-circuits for the
acknowledgement pushbutton S2 and for the Start button S3.
– Actuating the Start button S3 commences the restart.
– If the safety module CAMC-G-S3 detects a violation of a safety condition or an error is pending, e. g.
in the connection wiring, it will indicate a malfunction. The error is acknowledged via the acknow­
ledgement pushbutton S2.
– The acknowledgement contact C1/C2 should be polled via the controller.
– The input circuit has a 2-channel structure, which is suitable for category 4.
– Additional measures are required according to the scope of application and the safety concept of
the machine.
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
1
3
S2 S3
13 13
14 14
2 4
2 19 20 11 12 21 22
T1
Festo CMMP-AS-...-3A-M3
with CAMC-G-S3
9 21 1 2 7 8 9
2
S1: Input device, e. g. emergency stop switch
3
S1: Input device, e. g. safety door
K1
1 3
2 4
3
149