Direct Stop, Stop Category 1 - BONFIGLIOLI Vectron ACTIVE CUBE Applications Manual

10.3

Direct Stop, Stop Category 1

The application example shows the minimum circuitry for ACTIVE cube frequency inverters for realiza-
tion of the safety function STO "Safe Torque Off" with an emergency stop device in a common electri-
cal cabinet.
When the emergency stop device is actuated, the travel command "Clockwise" is reset first. After a
delay t , the contacts on the safety switch interrupt the two enable paths STOA and STOB of the AC-
v
TIVE Cube frequency inverter and the integrated safety function is activated. The delay time is set on
the safety control device and must be selected according to the application. The set delay time has to
be higher than the shut down time.
A (non-safe) feedback to a process controller can be effected, for example, via a connected field bus.
If STO is requested, the overriding controller has no more influence on the pulse block in the frequen-
cy inverter.
Safety installation
opened
closed
Acknowledgment
STOA: first shutdown path of the safety function STO
STOB: second shutdown path of the safety function STO
X210A, X210B, X10: Control terminals of the frequency inverter
X310: Interface of communication module
+E20V: DC 20 V voltage output or input for an external DC 24 V voltage supply
Terminal X210A.2 : Earth 20 V/ Earth 24 V (ext.)
S1IND ... S7IND: Digital inputs
S1OUTD: Digital output
MFO1: Multi-function output (analog/digital, frequency signal)
10VRef: Reference voltage DC 10 V
MFI1: Multi-function input (analog/digital)
Terminal 210B.7: Earth 10 V
X10: Relay output
Position switch displayed actuated
t : time delay between signaling contact and shutdown contact
v
32
S1
S2
Safety control
t
v
equipment
Safety circuit
Electrical cabinet
Mains
+24 V
X210A ACTIVE
1 +E20V
Cube
2 GND
STOA
3 S1IND
4 S2IND
Start CW
5 S3IND X310
6 S4IND Field bus
connection
7 S5IND
X210B
1 S6IND
STOB
2 S7IND
3 S1OUTD
4 MFO1A
5 10VRef
6 MFI1
7 GND
X10
Relay
1 S3OUT.1
+24V 2 S3OUT.2 S3OUT
3 S3OUT.3
M
ACU-STOV1-01SV2-04 en
Field bus
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