Hitachi SJ Series Safety Function Manual page 6

Introduction
S
Term / Description
Abbreviation
Safety
SIL
(IEC61508)
SILCL SIL claim limit (EN/IEC62061)
Signal is recognized as ON when
current flows out from signal
Sink logic
terminal.
depending on systems.
A type of logic that signal is
recognized as ON when current
Source logic flows into the terminal. This logic
may differ depending on region
or system.
The label
Specification label product, on which specification
of the inverter is written
Safe torque off (EN/IEC61800-5-
STO
2)
A type of stop category defined
in EN/IEC60204-1.
Stop category 0 Stopping by immediate removal
of power to the machine
actuator.
U
Term / Description
Abbreviation
The
provides
User's Guide
information
inverter
V
Term / Description
Abbreviation
Confirmation by examination
and provision of objective that
Validation the safety system meets the
requirements
specification
Confirmation by examination
and
Verification
evidence that the requirements
have been fulfilled
integrity level (1-3)
That may differ
affixed on the
documentation that
the detailed
to handle the
set by the
provision of objective
0-4
Introduction