ABB FSE-31, User Manual

Page: 13 / 38

Introduction to the manual 13
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Diagnostics shows how to trace faults with the status LED on
the module.
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Technical data contains the technical data of the module.
Terms and abbreviations
Exclusion of liability
ABB is not responsible for the implementation, verification and
validation of the overall safety system. It is the responsibility of the
system integrator (or other party) who is responsible for the overall
system and system safety.
Term/abbreviation Description
Fail-safe mode The FSO module has activated the drive STO
function as a result of an error. To exit this mode
and continue normal operation, repair the
possible fault and reboot the FSO module.
FEA-03 F-series extension adapter module
FSO-21 Safety functions adapter module which
supports a safety encoder
hi-Z state A digital signal is neither driven to a logical high
nor low level. It is “floating”.
HTF Hardware fault tolerance. (EN/IEC 62061)
HTL High-threshold logic
Safety system Whole functional safety system including, for
example, human-machine interface (HMI),
safety encoder, FSE-31 module, FSO module,
drive and sensors.
SIL Safety integrity level (levels are: 1, 2, 3, and 4).
Corresponds to PL. (EN 62061)
SILCL Maximum SIL that can be claimed for a safety
function or subsystem. (EN/IEC 62061)
STO Safe torque off
PL Performance level (levels are: a, b, c, d and e).
Corresponds to SIL. (EN ISO 13849-1)