Vacon OPTAF, User Manual

Page: 26 / 50

vacon • 24 STO AND SS1 SAFETY FUNCTIONS
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
3.4 Wiring examples
The examples in this chapter show the basic principles for wiring OPTAF board. Local norms and
regulations should be always followed in the final design.
3.4.1 Example 1: OPTAF board without reset for Safe Torque Off (STO)
Figure 8. Example 1.
Figure 8 shows a connection example of OPTAF board for Safe Torque Off safety function without
reset. The switch S1 is connected with 4 wires to the OPTAF board as shown above.
The power supply to S1 may come from OPT-A1 board (connector pins 6 & 7 in Figure 8) or it may
also be external.
When the switch S1 is activated (contacts open), the drive will go to STO state and motor (if running)
will stop by coasting. The drive will indicate: "A30 SafeTorqueOff".
When switch S1 is released (contacts closed), the drive returns to the ready state. The motor can
then be run with a valid start command.
F1
1
2
3
4
5
6
L1 L2
MAIN CIRCUIT
L3
PE
PE
L1 L2 L3
U V W
PE
X10
2
7
PE
PE
PE
W1
M1
M
3 ~
U1
1
V1 W1
2
PE
R1
SPEED REFERENCE
S
CCW
CW
W12 1r 2p 2s 1sh 2sh
OPTA1
Basic I/O
SLOT A
1
+10Vref
1
2
AIA1+
2
3
AIA1
3
X2
OPTAF
SLOT B 1
SD1+
2
SD1
S1
11
12
Safe disable
S6
START
13
14
4
AIA2+
4
5
AIA2
5
6
+24V
6
7
GND
7
3
SD2+
4
SD2
21
RO1 NC
22
RO1 C
21
22
0V
+24V
CONTROL UNIT
S7
STOP
11
12
8
DIN1
8
9
DIN2
9
10
DIN3
10
11
CMA
11
X1
A B
23
RO1 NO
C D
X2
25
RO2 C
A B C D
26
RO2 NO
X3
B
A
28
TI1+
12
+24V
12
13
GND
13
14
DIN4
14
15
DIN5
15
X10
X6
A B
29
TI1
C D
16
DIN6
16
17
CMB
17
18
AOA1+
18
19
AOA1
19
20
DOA1
20
START
res et
STO P
Vacon
+
s elect enter
9
W10 2r 1b 2b 1r
OFF
Shortcircuit and
earth fault
protected supply
PE
PE
PE
PE
PE PE
11057.emf