Vacon OPTAF - EXAMPLE 3: OPTAF BOARD WITH EXTERNAL SAFETY RELAY MODULE WITH OR WITHOUT RESET FOR SAFE TORQUE OFF (STO) OR EN 60204-1 STOP CATEGORY O

vacon • 26 STO AND SS1 SAFETY FUNCTIONS
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
3.4.3 Example 3: OPTAF board with external safety relay module with or
without reset for Safe Torque Off (STO) or EN 60204-1 stop category 0
Figure 10. Example 3.
Figure 10 presents a connection example of OPTAF board for STO safety function with external
safety relay module and without reset.
External safety relay module is connected to the switch S1. The used power supply to switch S1 is
230 VAC as an example. The safety relay module is connected to OPTAF board with 4 wires as shown
in Figure 10.
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.
The external relay can be wired so that manual reset is required to reset the STO safety function.
More information regarding the safety relay module may be found from the safety relay documen-
tation.
NOTE! For EN 60204-1 emergency stop according to stop category 0, use emergency stop button.
* Switch S1 in the figure can be replaced with the gate switch, then only Safe torque off mode is required. In
normal operation, both contacts are closed.
F1
1
2
3
4
5
6
L1 L2
MAIN CIRCUIT
L3
L1 L2 L3
UV W
PE
X10
2
7
W1
M1
M
3
~
U1
1
V1 W1
2
PE
R1
SPEED REFERENCE
S
CCW
CW
W12
1r 2p 2s1sh 2sh
OPTA1
Basic I /O
SLOT A
1
+10Vref
1
2
AIA1+
2
3
AIA1
3
X2
OPTAF
SLOT B
1
SD1+
2
SD1
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
CONTROL UNIT
S7
STOP
11
12
8
DI N1
8
9
DI N2
9
10
DI N3
10
11
CMA
11
X1
A B
23
RO1N O
C D
X2
25
RO2C
A B C D
26
RO2 NO
X3
B
A
28
TI1+
12
+24V
12
13
GND
13
14
DI N4
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
reset
STOP
Vac on
+
select
enter
9
13
14
23
24
230Vac
L1
N
S1
1112
2122
Sa f eDi sab l e
A10
K3.1
K1
K1.2
K3.2
K2
K2 .2
K1.1
K2.1
K3
S23
T22A1
A2
X2T11 T12
26
27
28
29
W1
1
2
OFF
DOLD BN5930.48/204230VAC
EXAMPLE:
+24V0V
31
33
S2
11
12
32
34
Alternative : Gate Switch *
Open
Shortcircuit and
earth fault
protected supply
Shortcircuit and
earth fault protected supply
For automatic reset
link X2 and T22
(Not allowed with Emergency stop)
PE
PE
PE
W3
2r1r
ON
PE
PE
PE
PE
PE
PE PE
PE
PE
S3
13
14
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