Vacon 20 CP, Installation, Technical And Maintenance Manual

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Safe Torque Off vacon • 100
Service support: find your nearest Vacon service center at www.vacon.com
9
9.5 Connections
To make the STO function available and ready to be used, both the STO jumpers have to be removed.
They have been located in front of the STO terminal to mechanically prevent the insertion of the STO
inputs. For the correct configuration, see the following table and the Figure 52.
Figure 52. Removing the STO jumpers.
The following examples show the basic principles for wiring the STO inputs and the STO output
feedback. Local standards and regulations should be always followed in the final design.
Signal Terminal Technical information Data
STO1
S1
Insulated digital input 1
(interchangeable polarity) 24V
±20%
10...15 mA
G1
STO 2
S2
Insulated digital input 2
(interchangeable polarity) 24V
±20%
10...15 mA
G2
STO
feedback
F+
Insulated digital output for STO
feedback
(CAUTION! Polarity must be
respected) 24V
±20%
15 mA max.
F- GND
Table 46. STO connector and data signals.
Make sure that the frequency converter is switched off before cabling.
When the STO function is used, the drive has to be mounted in an enclosure which
fulfils
the requirements for IP54 .
Disconnect both the STO jumpers to allow the cabling of the terminals.