Specifications Of Sto - Delta ASDA-B3 Series User Manual

Wiring

3.9.3 Specifications of STO

The ASDA-B3 series servo drive conforms to the following safety specifications:
3
(Type A subsystem)
Category
3-70
Item
SFF Safe failure fraction
HFT
Hardware fault tolerance
SIL Safety integrity level
Probability of dangerous failure per
PFH
-1
hour [h ]
Average probability of failure on
PFD
av
demand
Category
PL Performance level
MTTF Mean time to dangerous failure
d
DC Diagnostic coverage
Description Standard Safety data
Channel1: 80.08%
IEC61508
Channel2: 68.91%
IEC61508 1
IEC61508 SIL2
IEC62061 SILCL2
IEC61508 9.56×10 -10
-6
IEC61508 4.18×10
EN954-1 Category 3
ISO13849-1 d
ISO13849-1 High
ISO13849-1 Low
ASDA-B3