Technical details
Operating Manual PNOZ s30
1001715-EN-19
| 108
12.1 Safety characteristic data
NOTICE
You must comply with the safety characteristic data in order to achieve the
required safety level for your plant/machine.
Operating
mode
EN ISO
13849-1:
2015
PL
EN ISO
13849-1:
2015
Category
EN IEC
62061
SIL CL/
maximum
SIL
EN IEC
62061
PFH
D
[1/h]
EN/IEC
61511
SIL
EN/IEC
61511
PFD
EN ISO
13849-1:
2015
T
M
[year]
Monitoring 1
encoder PL d Cat. 2 SIL CL 2 2,88E-08 SIL 2 2,53E-03 20
Monitoring 2
encoder PL e Cat. 4 SIL CL 3 1,74E-09 SIL 3 1,46E-04 20
Monitoring
safe en-
coder PL e Cat. 4 SIL CL 3 3,08E-09 SIL 3 2,66E-04 20
Explanatory notes for the safety-related characteristic data:
} Safety characteristic data in accordance with EN IEC 62061 and EN/IEC 61511 was cal-
culated based on EN/IEC 61508.
} T
M
is the maximum mission time in accordance with EN ISO 13849-1. The value also ap-
plies as the retest interval in accordance with EN/IEC 61508-6 and EN/IEC 61511 and as
the proof test interval and mission time in accordance with EN IEC 62061.
All the units used within a safety function must be considered when calculating the safety
characteristic data.
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.
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.
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