VEGA VEGAVIB 62 - two-wire - Manual (Page 21)

Mode on the
signal condi-
tioning in-
strument Level Signal cur-
rent - Sensor Signal lamp -
sensor Signal lamp -
signal condi-
tioning in-
strument
Mode A
Overflow pro-
tection approx. 16 mA
Red
Mode B
Dry run pro-
tection approx. 16 mA
Red
Mode B
Dry run pro-
tection approx. 8 mA
Green
Fault message
(mode A/B) any < 2.3 mA
flashes red
6 .4 Recurring test and function test (SIL)
The VEGAVIB 62 is qualified for use in measuring chains of level SIL2
according to IEC 61508 (redundant, level SIL3).
The measuring system can be used for level detection of bulk solids
and meets the special requirements of safety technology.
This is possible up to SIL2 in a single channel architecture (1oo1D),
and up to SIL3 in a multiple channel, redundant architecture.
The following instrument combinations meet the requirements
according to SIL:
VEGAVIB 62 Ex with
l Oscillator VB60Z
l Signal conditioning instrument VEGATOR 636Ex or SPLC (safety-
oriented PLC)
There are the following possibilities to carry out the recurring function
test:
1 Filling of the vessel up to the switching point
2 Dismounting of the sensor and immersion in the the original
product
General information
SIL
Implementation - Func-
tion test
VEGAVIB 62 • - two-wire 21
6 Set up
29274
-
EN
-120418