Parameters in accordance with
DIN EN ISO 13849
Meaning
MTTF
d
> 100 years
Mean Time To Failure
DC > 99% (high)
Diagnostic Coverage
Performance level = e
Category = 4
Lifetime
Operation Manual
Safety I/O Terminals
SI4000 / SO4000
Document no.: 5.08009.05
Baumüller Nürnberg GmbH
26
4.2
The interval for the repeat test (proof test interval) is set for 20 years. The repeat test
serves to detect failures which could not be detected by the diagnostic coverage during
the operating time. It is necessary to detect all dangerous failures so that the repeat test
will be fully effective and “like new” condition can be established for the system.
CAUTION!
To ensure the safety-related parameters specified above, the safety control will have
to be decommissioned and sent back to the manufacturer within not more than 20
years.
4.2
Lifetime
The safety terminal are designed for a service life of 20 years.
Due to the high diagnostic coverage within the lifecycle no special proof tests are re-
quired.
The terminals have a date code which corresponds to the following glossary:
Date code: WW YY SW HW
WW
calendar week of production
YY
year of production
SW
software version (hex)
HW
hardware version (hex)
Example: Date code:
17 11 05 00
calendar week of production
17
year of production
2011
software version
05
hardware version
00
Additionally the terminals have a unique serial number.
Summary of Contents for SI4000
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