AMCI SV160E2, User Manual, Page: 85 / 120

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SV160E2 User Manual
I
NSTALLING THE
SV160E2
85
1.9 STO Input Wiring
The SV160E2-STO uses Inputs 3 and 4 as the redundant STO inputs. These inputs must have 12 to 24 Vdc
applied to them before the motor’s power stage is enabled. If you have an SV160E2-STO and are not using
the STO functionality, then you must apply 12 to 24Vdc to both inputs to bypass the STO functionality. Col-
ors in parentheses are the appropriate wire color for the CNFL-5M cable.
Figure T1.8 STO Input Connections
1.9.1 Extending the STO Cabling
The STO inputs are fast acting, and therefore susceptible to electrical noise. Keep the cabling from the safety
relay to the SV160E2-STO as short as possible. If you have to extend the cabling beyond a CNFL-5M, use
shielded twisted pair cabling. The second wire of the pair should be connected to the power supply return.
STOB
STOB
STOA
STOA
IN DC Common
IN DC Common
+
+
(YEL)
(YEL)
(GRN)
(GRN)
12 to
24 Vdc
12 to
24 Vdc
1.7.3
1.7.3 1.9.1
3
3
(BLU)
(BLU)
4
4
7
7