5
vacon • 47 Control unit
5.1.3 Relay and thermistor input terminals
5.1.4 Safe Torque off (STO) terminals
For more information on the functionalities of the Safe Torque Off (STO), see chapter 9.
Table 20. I/O terminal signals for relay and thermistor terminals and connection example.
Relays and thermistor
Terminal Signal
21
RO1/1
Relay output 1
22
RO1/2
23
RO1/3
24
RO2/1
Relay output 2
25
RO2/2
26
RO2/3
28
TI1+
Thermistor input
29
TI1-
Table 21. 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