4
Electrical installation
34
Festo – GDCP-CMMD-AS-HW-EN – 1404NH – English
4.5
STO interface [X3.1/2]
4.5.1
Pin allocation
Connection
Version
[X3.1/2] on motor controller
Phoenix Contact - MC 1.5/6-GF3.81 BK
Counterplug (plug set NEKM-C-4)
Phoenix Contact - MC 1.5/6-STF3.81 BK
Tab. 4.12 Connection: STO interface [X3.1/2]
Ex factory, Pin 1 and Pin 2 on the connection [X3.1/2] are bridges (circuitry without use of the STO
safety function). That means that the motor controller is prepared ex-factory for use
without
the STO
safety function (
Section 4.5.2).
[X3.1/2]
Pin
Designation
Value
Description
1
2
3
4
5
6
1
24 V
+24 V DC
Voltage output (24 V DC logic supply
carried out as auxiliary voltage)
2
Rel
0 V / 24 V
Driver supply relay control.
3
0 V
0 V
Reference potential for digital inputs
and outputs.
4
–
–
–
5
1
(NC1)
Max. 25 V AC,
30 V DC, 2 A
Acknowledgment contact for the status
“Safe Torque Off ” (STO)
6
2
(NC2)
Tab. 4.13 Pin allocation: Interface [X3 1/2] (circuitry without use of the STO safety function)
4.5.2
Circuitry without use of the STO safety function [X3.1/2]
If you do
not
need the integrated STO safety function in your application, you must bridge
Pin 1 and Pin 2 at interface [X3 1/2] to operate the motor controller
Tab. 4.13.
This deactivates the integrated safety function!
When using this circuitry for the CMMD-AS-C8-3A, safety in the application must be en-
sured through other appropriate measures.
