9 | Connection STOBER
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05/2019 | ID 442790.01
9.4.11 X12: Safety technology (option SR6)
The SR6 option adds the STO safety function to the SC6 drive controller via terminal X12.
For double-axis controllers, the STO safety function has a two-channel structure that acts upon both axes.
Information
If you would like to use the STO safety function via terminals, be sure to read the SR6 manual; see the chapter Detailed
information [}202].
Technical data
Observe the technical data of the safety options for X12; see the chapter Safety technology [}41].
Terminal Pin Designation Function
1|2|3|4|5|6|7|8
1 STO
a
Input of safety channel 1
2
3 STO
b
Input of safety channel 2
4
5 GND Reference potential for STO
a
and STO
b
, internally bridged
with terminal 7
6 STO
status
Acknowledgment signal of
safety channels 1 and 2 for
diagnostic purposes
7 GND Reference potential for STO
a
and STO
b
, internally bridged
with terminal 5
8 U
1status
STO supply
status
;
recommended fuse
protection: max. 3.15AT
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Tab. 80: X12 connection description
Connecting wiring
For connecting wiring, observe the terminal specifications in the chapter BCF 3,81 180 SN [}189].
Cable requirements
Feature All sizes
Max. cable length 30m
Tab. 81: Cable length [m]
11
For UL-compliance, use of a 3.15A fuse (time delay) is required. The fuse must be certified for DC voltage in accordance
with UL 248.