Vacon OPTAF, User Manual

Page: 23 / 50

STO AND SS1 SAFETY FUNCTIONS vacon • 21
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
* If 230 VAC is used as control voltage from the output relays, the control circuitry must be powered with
a separate isolation transformer to limit short circuit current and overvoltage spikes. This is to prevent
the welding on the relay contacts. Refer to standard EN 60204-1, section 7.2.9.
3.3.6 Safety-related data according to the standard
Safe Torque Off (STO) safety-related data
28
29 TI1+
TI1-
DigIN: B.1
Thermistor input; R
trip
> 4.0 k
Ω
(PTC)
max voltage = 10 V
max current = 6.7 mA
Table 5. STO function truth table
V
SD1+
- V
SD1-
V
SD2+
- V
SD2-
STO state
0 VDC 0 VDC STO active
24 VDC 0 VDC
STO diagnostic fault and STO activation. Fault is activated after
inputs have been in different states for >5000 ms.
0 VDC 24 VDC
STO diagnostic fault and STO activation. Fault is activated after
inputs have been in different states for >5000 ms.
24 VDC 24 VDC STO inactive
Standard
Control board VB00761
revision F and older
(all frame sizes)
Control board VB00761
revision G and newer
(FR4–FR8)
Control board VB00761
revision G
and newer with new
power units* (FR9–
FR14)
EN 61800-5-2:2007 SIL 2
PFH = 2.98 x 10
-9
/hour
Dual Channel Structure
SIL 3
PFH = 2.70 x 10
-9
/hour
Dual Channel Structure
SIL 3
PFH = 3.4 x 10
-9
/hour
Dual Channel Structure
EN 62061:2005 SIL CL 2
PFH = 2.98 x 10
-9
/hour
Dual Channel Structure
SIL CL 3
PFH = 2.70 x 10
-9
/hour
Dual Channel Structure
SIL CL 3
PFH = 3.4 x 10
-9
/hour
Dual Channel Structure
EN/ISO 13849-1:2006 PL d
MTTF
d
= 828 years
DC
avg
= low
PFH = 2.8 x 10
-9
/hour
Category 3
PL e
MTTF
d
= 1918 years
DC
avg
= low
PFH = 2.70 x 10
-9
/hour
Category 3
PL e
MTTF
d
= 1203 years
DC
avg
= low
PFH = 3.4 x 10
-9
/hour
Category 3
IEC 61508:2000
High Demand Mode SIL 2
PFH = 2.98 x 10
-9
/hour
Dual Channel Structure
SIL 3
PFH = 2.70 x 10
-9
/hour
Dual Channel Structure
SIL 3
PFH = 3.4 x 10
-9
/hour
Dual Channel Structure
Table 4. OPTAF I/O terminals
Terminal
Parameter reference
on keypad and
NCDrive
Technical information