Product description
EL6900 17Version: 2.2.0
3.4 Safety parameters
Key figures EL6900
Lifetime [a] 20
Prooftest Interval [a] not required
1
PFH
D
1.03E-09
%SIL3 1,03%
PFD 8.23E-05
%SIL3 8,23%
MTTF
d
high
DC high
Performance level PL e
Category 4
HFT 1
Element classification
2
Type B
1. Special proof tests are not required during the entire service life of the EL6900 EtherCAT terminal.
2. Classification according to IEC 61508-2:2010 (see chapters 7.4.4.1.2 and 7.4.4.1.3)
The EL6900 EtherCAT Terminal can be used for safety-related applications within the meaning of
IEC61508:2010 up to SIL3 and EN ISO 13849-1 up to PL e (Cat4).
For the calculation or estimation of the MTTF
d
value from the PFH
D
value, further information can be found in
the TwinSAFE application manual or in ISO 13849-1:2015 Table K.1.
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