5
vacon • 51
Control unit
5.1.3
Relay terminals
5.1.4
Safe Torque off (STO) terminals
For more information on the functionalities of the Safe Torque Off (STO), see chapter 9. This
function is available only in the three-phase version.
Table 25. 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 26. 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
Summary of Contents for 20 CP
Page 1: ...vacon 20 cp ac drives installation Technical and Maintenance manual ...
Page 2: ......
Page 6: ...vacon 3 ...
Page 16: ...1 vacon 13 Safety Figure 6 STO certificate ...
Page 18: ...1 vacon 15 Safety ...
Page 24: ...vacon 21 Receipt of delivery 2 ...
Page 36: ...3 vacon 33 Mounting ...
Page 48: ...4 vacon 45 Power cabling ...
Page 64: ...5 vacon 61 Control unit ...