4
Electrical installation
Festo – GDCP-CMMO-ST-EA-SY-EN – 1301a – English
37
4.6
STO [X3]
The STO safety function (“Safe Torque Off ”) is described in detail in the document
GDCP-CMMO-ST-STO-…
The STO function should only be used in the manner described in this document.
Port
Pin
Function
X3
1
5
1
5
1
+24 V logic
Logic voltage output (from X9)
2
STO 1
Channel 1: switch off the supply
voltage
3
STO 2
Channel 2: switch off the supply
voltage
4
Diagnostics 1
The diagnostic contacts are
potential-free.
The diagnostic contact is low
impedance if the STO function has
been requested and activated via
two channels.
5
Diagnostics 2
Tab. 4.6
Connection X3 STO