5
vacon • 35
Control unit
5.3.3
Relay terminals
5.3.4
Safe Torque off (STO) terminals
For more information on the functionalities of the Safe Torque Off (STO), see chapter chapter
9..
Table 14. I/O terminal signals for relays and connection example.
Relays terminals
Terminal
Signal
22
RO1/2
Relay output 1
23
RO1/3
24
RO2/1
Relay output 2
25
RO2/2
26
RO2/3
Table 15. I/O terminal signals for the STO functions.
Safe Torque Off terminals
Terminal
Signal
S1
Isolated digital input 1 (inter-
changeable polarity);
+24V ±20% 10...15mA
G1
S2
Isolated digital input 2 (inter-
changeable polarity);
+24V ±20% 10...15mA
G2
F+
Isolated feedback (CAUTION!
Polarity to be respected);
+24V ±20%
F-
Isolated feedback (CAUTION!
Polarity to be respected);
GND
From
standard I/O board
From term.
#7
From term.
#6
RUN
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