Baumuller SI4000 - Lifetime

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
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of 82
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.