Safety Request Via Devices With Semi-Conductor Outputs - Festo CAMC-G-S3 Manual

3 Mounting and installation
3.3.2

Safety request via devices with semi-conductor outputs

The safety function can be requested via various devices. Switch 1 can be a light curtain or a safety
switching device with semi-conductor outputs. The safety request is sent over 2 channels via switch S1.
If the safety function is active, then, in the example, this is output by the potential-free contact C1/C2.
24 V DC
0 V DC
2
1
1
T1: Motor controller with safety module
(only relevant connections shown)
Fig. 3.3 Sample circuit, device with semi-conductor outputs
Notes with regard to the sample circuit:
– In the input circuit for the S1 switches, the light curtain S1 detects cross circuits.
– In the input circuit for the Start button S3 and the acknowledgement pushbutton S2, the safety
module CAMC-G-S3 detects cross circuits.
– Actuating the Start button S3 and the acknowledgement pushbutton S2 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.
150
L
N
PE
K1
1 3
sender receiver
2 4
1 2
Only relevant connections drawn
S2 S3
13
13
14
14
19 20 11 12 21 22 9
T1
Festo CMMP-AS-...-3A-M3
with CAMC-G-S3
2
S1: Input device, e. g. light curtain
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
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