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4.4
Safety parameters
Key data
Lifetime [a]
Proof test Interval [a]
PFH
D
%SIL 3
PFD
%SIL 3
MTTF
D
DC
Performance Level
Category
HFT
2
Classification element
1
Special proof tests are not required during the entire service life of the EtherCAT Terminal.
2
Classification according to IEC 61508-2:2010 (chapter 7.4.4.1.2 and 7.4.4.1.3)
The bus terminal can be used for safety-related applications within the meaning of IEC 61508:2010 up to
SIL 3 and EN ISO 13849-1 up to PL e (Cat4).
For the calculation or estimation of the MTTFd value from the PFHD value, further information can be found
in the TwinSAFE Application Guide or in ISO 13849-1:2015 Table K.1.
4.5
Dimensions
Fig. 5: Dimensions
Width: 24 mm (side-by-side installation)
Height: 100 mm
Depth: 68 mm
KL2904
KL2904
20
not required 1)
1.73E-09
1.7%
1.42E-04
14.2%
high
high
PL e
4
1
Type B
Version: 3.1.0
Product description
23
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