Vega VEGAPULS 61, Руководство по безопасности

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I n the adjustment software , the parameter " S ensor according
to
SIL
" must be selected in the menu level "
B
asic adjustment "
.
I f the indicating and adjustment module is used , the parameter
" SIL " must be actived in the menu level " S ervice " .
T he parameter adjustment of the interference current in fl uen -
ces the safety - related characteristics . F or safety - relevant
applications only the following interference currents are
permitted
:
l
fail low = <
3
.
6
m A ( default value )
l
fail high =
22
m
A
T he damping of the output signal must be adapted to the
process safety time
.
M
easured value transmission via
HART
signal as well as
HART multidrop mode is not permitted .
T he e ff ectivity of the set parameters must be checked in a
suitable way .
l
A
fter connecting the instrument
,
the output signal jumps to
the set interference current ( at the end of the switch on
phase )
l
I n mode " S imulation " , the signal current can be simulated
independent of the actual level
T o avoid unwanted or unauthorized modi fi cation , the set
parameters must be protected against unintentional access :
l
activate the password protection in the adjustment
software
l
A ctivate the PIN on the indicating and adjustment module
T he access by means of HART handheld or similar is not
permitted
.
P rotecting against unintentional or unauthorized adjustment
can be done , e . g . by sealing the housing cover .
C aution :
A fter a reset of the values , all parameters must be checked or
readjusted
.
C
reate a measurement loop
R eaction in case of failure
D amping of the output signal
I nadmissible modes
I nspection possibilities
A ccess locking
8
VEGAPULS series
60
-
4
…
20
m A / HART
F unctional safety
31338
-
EN
-
070510