Circuitry Of The Control Ports - Festo CMMO­-ST Serie Manual De Instrucciones

CMMO­ST-...-LKP
2.1

Circuitry of the control ports

To protect against unintended start-up, the motor controller must be activated via the
connector [X3] based on the category required for the application according to EN ISO
13849-1. Attainable safety level of the STO function è Chapter 1.1.3.
The following components can be connected to the control ports (è Tab. 7) to request the STO function:
– Semiconductor safety outputs (electronic safety switching devices, active safety sensors, e.g. light
curtains with OSSD signals) (OSSD = "Output Signal Switching Device")
– Switch contacts (safety switching devices with relay outputs, passive safety sensors, e.g. forced
position switches)
+24 V DC, load
0 V DC
+24 V DC, logic
2
1
1
Motor controller with safety module
(only relevant connections shown)
2
Emergency stop switches
Fig. 2 Switching example (without cross-circuit detection)
Note
The motor controller cannot detect a cross circuit in the input circuit by itself.
• Determine if cross-circuit detection for the input circuit and the connection wiring is
required in your application.
• If required, use a safety switching device with cross-circuit detection.
28
S1
1 3
2 4
1 2 3 4 5
Festo CMMO-ST
1 2 3 4 5
3 Guard door (alternative to 2 )
4 Light curtain (alternative to 2 )
5 Safety switching device (alternative to 2 )
Festo – GDCP-CMMO­ST-LK-S1-Z6 – 2017-05a – English
S1
1 3
2 4
S1
1 3
Transmitter Receiver
2 4
S1
1 3
2 4
3
4
5