Vacon OPTAF, User Manual

Page: 31 / 50

STO AND SS1 SAFETY FUNCTIONS vacon • 29
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
Figure 13. STO connection example 2
Figure 14. STO connection example 3
Cable recommendation:
See Table 6 for connections where shielded cable is required. In cases where the shield is marked
as being required, use the shield to separate the STO input channels from each other as shown in
Figure 15.
Type
For example one of the following:
• 2x2x0.75mm
2
(18 AWG) low voltage cable with two
individually shielded twisted pairs
• 2x2x0.75mm
2
(18 AWG) low voltage, unshielded,
twisted pair cable
• two separate 2x0.75mm
2
(18 AWG) shielded or
unshielded twisted pair cables.
SAFETY ACTUATOR
OPTAF
CHANNEL 1
SW P
+24V
+24V
OV
OV
SW M
SD1+
SD1-
OPTAF
CHANNEL 2
SD2+
SD2-
11968_uk
SAFETY ACTUATOR
OPTAF
CHANNEL 1
SW P
+24V
+24V
SW P
SD1+
SD1-
OPTAF
CHANNEL 2
SD2+
SD2-
OV
11969_uk