S-3
M
Power supply necessary for
operation of inverter
Mean time to dangerous failure
Expectation of the mean time
to dangerous failure
O
The keypad mounted on the
inverter used for configuration
of parameters and monitoring
of inverter's state
P
Protected extra-voltage
(EN/IEC60204)
Probability of dangerous
failure on demand (IEC61508)
Average frequency of a
dangerous failure [1/h]
(EN/IEC61800-5-2)
Performance level (a-e) (EN ISO
13849-1)
Programmable logic controller
R
Risk remaining after protective
measures have been taken
Delay time inside of the
inverter from a request of
activation of a function until
actual execution of the
function
Probability and severity of
hazard
S
Safety functions to achieve safe
state of system such as STO
function defined in IEC61800-
5-2.
Whole system including
inverter, sensor, switch and
safety relay etc. that achieves
Safety function(s)
Safety extra-low voltage
(EN/IEC60950)
Safe failure fraction (%)
(IEC61508)
S
Safety function, STO etc. is
operating correctly
Safety integrity level (1-3)
(IEC61508)
SIL claim limit (EN/IEC62061)
Signal is recognized as ON when
current flows out from signal
terminal. That may differ
depending on systems
A type of logic that signal is
recognized as ON when current
flows into the terminal. This
logic may differ depending on
region or system.
The label affixed on the
product, on which specification
of the inverter is written
Safe torque off (EN/IEC61800-5-
2)
A type of stop category defined
in EN/IEC60204-1.
Stopping by immediate removal
of power to the machine
actuator.
U
The documentation that
provides the detailed
information to handle the
inverter
V
Confirmation by examination
and provision of objective that
the safety system meets the
requirements set by the
specification
Confirmation by examination
and provision of objective
evidence that the requirements
have been fulfilled
To Next Page
Loading...
Need help?
General