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 - Vacon OPTAF User Manual

vacon • 26
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
MAIN CIRCUIT
PE
L1 L2 L3
PE
1 3 5
F1
SPEED REFERENCE
2 4 6
R1
W12
1sh 1r
PE
L1 L2 L3
1
+10Vref
X10
X2
2
7
U V W
PE
PE
PE
PE
W1
U1 V1 W1
M
PE
3 ~
PE
1 2
M1
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.
CONTROL UNIT
CCW
S
CW
2sh 2p 2s
PE
1 2 3 4 5 6 7
2 3 4 5 6 7
AIA1+ AIA1 AIA2+ AIA2 +24V GND
SD1+ SD1 SD2+ SD2 RO1 NC RO1 C
1 2 3 4 21
EXAMPLE:
DOLD BN5930.48/204230VAC
PE PE
PE
W3
1r 2r
SafeDisable A1 T11 T12
A10
K3.1 K1.2
13 23
14 24
K1
A2 S23
For automatic reset
link X2 and T22
(Not allowed with Emergency stop)
0V +24V
Shortcircuit and
earth fault protected supply
Figure 10. Example 3.
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
START STOP
S6 S7
13 11
14 12
8 9 10 11 12 13
8 9 10 11 12 13
DIN1 DIN2 DIN3 CMA +24V GND
A B C D A B C D A B C D
B
X1 X2 X3 X6
A
RO1 N O RO2 C RO2 NO TI1+ TI1
OFF
X10
OPTAF
SLOT B
22 23 25 26 28 29
ON
T22 X2
K 1. 1
K3.2 K2.2 28
K 2. 1
29
K2 K3
STO AND SS1 SAFETY FUNCTIONS
Alternative : Gate Switch *
31 32
11
S2
Open
12
13
S3
14
33 34
14 15 16 17 18 19
14 15 16 17 18 19 20
DIN4 D IN5 DIN 6 CMB AOA1+ AOA1 DOA1
OPTA1
Basic I/O
SLOT A
S1
12 11 2
L1
26
230Vac
22 21 1
N
27
W1
20
PE
9
Vacon
START
res et
+
STO P
s elect enter
Shortcircuit and
earth fault
protected supply
11059.emf