HIMatrix 3 Safety Concept for Using the PES
HI 800 023 E Rev. 1.01 Page 15 of 72
3 Safety Concept for Using the PES
This chapter contains important general items on the functional safety of HIMatrix systems.
Safety and availability
Time parameters important for safety
Proof test
Safety requirements
Certification
3.1 Safety and availability
The HIMatrix systems are certified for use in process controllers, protective systems, burner
controllers, and machine controllers.
They can be used in applications up to safety integrity level SIL 3 in accordance with
IEC 61508 or up to safety category Cat. 4 and up to performance level PL e in accordance
with EN ISO 13849.
The HIMatrix systems have been tested and certified for use in fire alarm and fire-fighting
systems in accordance with EN 54-2 and NFPA 72. To contain the hazard, these systems
must be able to adopt an active state on demand.
No imminent danger results from the HIMatrix systems.
DANGER
Physical injury caused by safety-related automation systems improperly connected
or programmed.
Check all connections and test the entire system before starting up!
NOTE
System damage!
System damage caused by safety-related automation systems improperly connected
or programmed.
Check all connections and test the entire system before starting up!
3.1.1 Calculating the PFD and the PFH Values
The PFD and the PFH values have been calculated for the HIMatrix systems in accordance
with IEC 61508.
For SIL 3, IEC 61508-1 defines a PFD value of 10
-4
...10
-3
and a PFH value of 10
-8
...10
-7
per
hour.
For the controller (PES), 15 % of the limit value for PFD and PFH specified in the standard
is assumed. The limit values for the controller portion is thus
PFD = 1.5 * 10
-4
and PFH = 1.5 * 10
-8
per hour.
A proof test interval of 10 years has been defined for the HIMatrix systems, with remote
I/Os with modules and relay outputs the test interval is 3 years (offline proof test, see IEC
61508-4, paragraph 3.8.5).
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