Safety-Related Data According To The Standard - Vacon OPTAF User Manual

STO AND SS1 SAFETY FUNCTIONS
Terminal
28 TI1+
29 TI1-
* 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.
V - V
SD1+ SD1-
0 VDC
24 VDC
0 VDC
24 VDC
3.3.6

Safety-related data according to the standard

Safe Torque Off (STO) safety-related data
Standard
EN 61800-5-2:2007
EN 62061:2005
EN/ISO 13849-1:2006 PL d
IEC 61508:2000
High Demand Mode
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
Table 4. OPTAF I/O terminals
Parameter reference
on keypad and
NCDrive
DigIN:B.1
Table 5. STO function truth table
V - V
SD2+ SD2-
0 VDC STO active
STO diagnostic fault and STO activation. Fault is activated after
0 VDC
inputs have been in different states for >5000 ms.
STO diagnostic fault and STO activation. Fault is activated after
24 VDC
inputs have been in different states for >5000 ms.
24 VDC STO inactive
Control board VB00761
revision F and older
(all frame sizes)
SIL 2
-9
PFH = 2.98 x 10 /hour
Dual Channel Structure
SIL CL 2
-9
PFH = 2.98 x 10 /hour
Dual Channel Structure
MTTF = 828 years
d
DC = low
avg
-9
PFH = 2.8 x 10 /hour
Category 3
SIL 2
-9
PFH = 2.98 x 10 /hour
Dual Channel Structure
Technical information
Thermistor input; R
max voltage = 10 V
max current = 6.7 mA
STO state
Control board VB00761
revision G and newer
(FR4–FR8)
SIL 3
-9
PFH = 2.70 x 10 /hour
Dual Channel Structure
SIL CL 3
-9
PFH = 2.70 x 10 /hour
Dual Channel Structure
PL e
MTTF = 1918 years
d
DC = low
avg
-9
PFH = 2.70 x 10 /hour
Category 3
SIL 3
-9
PFH = 2.70 x 10 /hour
Dual Channel Structure
vacon • 21
Ω
> 4.0 k (PTC)
trip
Control board VB00761
revision G
and newer with new
power units* (FR9–
FR14)
SIL 3
-9
PFH = 3.4 x 10 /hour
Dual Channel Structure
SIL CL 3
-9
PFH = 3.4 x 10 /hour
Dual Channel Structure
PL e
MTTF = 1203 years
d
DC = low
avg
-9
PFH = 3.4 x 10 /hour
Category 3
SIL 3
-9
PFH = 3.4 x 10 /hour
Dual Channel Structure