BECKHOFF KL6904 - Manual (Page 17)

Product description
KL6904 15
3.4 Safety parameters
Key figures KL6904
Lifetime [a] 20
Prooftest Intervall [a] not required 1)
PFH 1.73E-09
%SIL3 1.7%
PFD 1.42E-04
%SIL3 14.2%
MTTFd [a] >100
DC >99%
Performance level PL e
Category 4
HFT 1
Element classification* Type A
*) Classification according to IEC 61508-2:2010 (see chapters 7.4.4.1.2 and 7.4.4.1.3)
The KL6904 Bus Terminal can be used for safety-related applications within the meaning of
IEC 61508:2010 up to SIL3 and EN ISO 13849-1 up to PL e (Cat4).
1) Special proof tests are not required during the entire service life of the KL6904 Bus Terminal.
3.5 Dimensions
Width: 24 mm (side-by-side installation)
Height: 100 mm
Depth: 68 mm