1.5.4 Specifications of the safety functions
1.5.4.1 System requirements
Required Firmware
v4.2.0 or higher
Supported Hardware
SOMANET Node 2000 Safety (E revision or newer) *
SOMANET Node 1000 Safety (E revision or newer)
SOMANET Node 400 Safety (E revision or newer)
* External fuse at main supply (48 VDC) is required for drive 2000 dimensioned according to driven load.
1.5.4.2 Technical specifications
Safety parameters
Safety Integration level (SIL) according to IEC
61508:2010
SIL 3
Performance Level (PL) according to ISO 13849-
1:2015
PL e cat. 3
Safe Failure Fraction (SFF) 99.99 %
Probability of dangerous failure per hour (PFH ) 1.07*10 /hour
Probability of dangerous failure on demand (PFD
)
9.41*10
Common Cause Failure (CCF) >65
Hardware Fault Tolerance (HFT) 1
Reaction time 10 ms
De-activation time 10 ms
Mean Time to dangerous Failure (MTTF ) 3035 years (capped to 100 years)
Diagnostic coverage (DC ) 99%
HW-type Type A
Mission time T 20 a
Installation requirements
Max. installation altitude 2000 m
Pollution Degree PD 2
Supported Motors 1 x 3-phase BLDC-Motor and 1 active brake
d
-10
avg
-6
d
avg
M
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