7.6 Safe Torque Off STO (X4)
The STO connector X4 is found at the top side
of the drive. The cable must be shorter than
20m. Use shielded cables if longer than 0.5m.
Pin Layout X4
Pin
Name
Description
1
STO Input Ch1
STO channel 1 input
2
STO Return
GND
3
STO Input Ch2
STO channel 2 input
4
Safe Input 7
Safe Input 7 (don’t connect, currently not available)
5
Aux 24 V
24V for STO, if STO is not used (connect to Pin 1 and 3 of X4)
6
Aux Gnd
Ground for STO, if STO is not used (connect to Pin 2 of X4)
Table 20: Pin out of the Safe-Torque-Off (STO) connectors.
Figure 14: Wiring of the STO used (left) and not used (right)
HWTSD80-TSD130_4_HardwareManual_EP006
2022-01-27
32/49
6
5
1
2
3
4
Figure 13: STO connector (X4).
24VDC
=
~
-
+
S1..2
1
2
3
4
5
6
STO In Ch1
STO Ret
STO in Ch2
Safe In7
Aux 24V
Aux Gnd
X4
1
2
3
4
5
6
STO In Ch1
STO Ret
STO in Ch2
Safe In7
Aux 24V
Aux Gnd
X4
