Safety Request Via A Safety Switching Device - Festo CAMC-G-S3 Manual

3 Mounting and installation
3.3.3

Safety request via a safety switching device

If more than four safety command devices (S1) are required or if a higher-order safety control is to be
used, then the motor controller (T1) can also be activated via other safety command devices.
The safety function can be requested via various devices. The safety request is sent over 2 channels via
switch S1 and is analysed by the safety switching device (S2) (safety relay, safety SPS). If the safety
function is active, then, in the example, this is output by the potential-free contact C1/C2.
L
N
PE
24 V DC
0 V DC
5
K1
4
S1
sender
3
PE
1
T1: Motor controller with safety module
(only relevant connections shown)
2
S1: Safety switching device
Fig. 3.4 Switching example with safety switching device
Notes with regard to the sample circuit:
– In the input circuit for the S1 switches, the safety switching device T2 detects cross circuits. If a
Start button is required for the application, it is also connected to the safety switching device T2.
For the acknowledgement pushbutton S2, the safety module CAMC-G-S3 detects cross circuits.
– The safety functions in the CAMC-G-S3 are parameterised to "Automatic restart after cancellation of
request" when an external safety switching device is used.
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
S1
T2
Safety switch­
ing device
receiver
1 3
S2
13
14
2 4
1 2 21 22 19 20 11
T1
Festo CMMP-AS-...-3A-M3
with CAMC-G-S3
Only relevant connections drawn
3
S1: Light curtain
4
S1: Safety door
5
S1: Emergency stop switch
9 21 1 2 7 8 9
1
2
151