Pilz PSS SB FT, Basic license - Manual (Page 183)

9-1 Modular Block System: Burner Management
Appendix
Assignment table: Category « Requirement class
In process engineering, safety requirements must conform to DIN V 19 250
(Basic Safety Requirements for Measurement and Control Protection).
Requirement classes in accordance with DIN V 19 250 may be referred to
the categories as per EN 954-1:1997-03.
Assignments as per requirements Assignments as per measures
Fig. 9-1: Assignment table
*1 This assignment cannot be definitive. It depends on the system
and/or product.
*2 Depending on the anticipated extent of damage, i.e. requirement class
1 may either be category 1 or may have no safety requirement.
Requirement
Class
DIN V 19 250
1
2
3
4
5
6
Category
VDI/VDE 2180
I
II
Safety Integrity
Level
EN IEC 61508
0
1
2
3
Category of
Control
EN 954-1
B
1
2
3
4
*1
*1
*1
*2