Safety Characteristic Data; Supplementary Data - Pilz PNOZ po4p Operating Manual

PNOZ po4p

Safety characteristic data

Operating EN ISO
mode 13849-1:
2015
PL
– PL e
Explanatory notes for the safety-related characteristic data:
} The SIL CL value in accordance with EN 62061 corresponds to the SIL value in accord-
ance with EN 61508.
}
T is the maximum mission time in accordance with EN ISO 13849-1. The value also ap-
M
plies as the retest interval in accordance with EN 61508-6 and IEC 61511 and as the
proof test interval and mission time in accordance with EN 62061.
All the units used within a safety function must be considered when calculating the safety
characteristic data.

Supplementary data

The PFH value depends on the switch frequency and the load of the relay output.
If the service life graphs are not accessible, the stated PFH value can be used irrespective
of the switch frequency and the load, as the PFH value already considers the relay's B10d
value as well as the failure rates of the other components.
Operating Manual PNOZ po4p
1003836-EN-10
NOTICE
You must comply with the safety characteristic data in order to achieve the
required safety level for your plant/machine.
EN ISO EN 62061
13849-1:
SIL CL
2015
Category
Cat. 4 SIL CL 3
INFORMATION
A safety function's SIL/PL values are not identical to the SIL/PL values of
the units that are used and may be different. We recommend that you use
the PAScal software tool to calculate the safety function's SIL/PL values.
CAUTION!
It is essential to consider the relay's service life graphs. The relay outputs'
safety-related characteristic data is only valid if the values in the service life
graphs are met.
EN 62061 IEC 61511
PFH [1/h] SIL
D
2,31E-09 SIL 3
IEC 61511 EN ISO
13849-1:
PFD
2015
T [year]
M
2,03E-06 20
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