VEGA VEGASWING 61 - two-wire - Manual (Page 19)

19
6 Setup
VEGASWING 61 • - two-wire
29227-EN-130409
Sensor Signal conditioning in-
strument
Mode on
the signal
condi-
tioning
instrument
Level Signal
current -
Sensor
Signal
lamp -
sensor
Analogue
- input
control 1)
Signal
lamp -
signal
condi-
tioning
instrument
Mode B
Dry run
protection
approx.
8 mA
Green
> 3.8 mA
< 11.5 mA
Fault mes-
sage
(mode A/B)
any approx.
1.8 mA
off
≤ 3.6 mA
≥ 21 mA
6.4 Recurring test and function test (SIL, WHG)
The VEGASWING 61 is qualified for use in measuring chains of level
SIL2 according to IEC 61508 (redundant, level SIL3) and is approved
according to WHG.
The implementation of the recurring test according to WHG is stipu-
lated in the general type approval, item 8.
Take note of these higher-ranking approvals if VEGASWING 61 Ex is
used as part of an overfill protection system according to WHG.
The following instrument combinations meet the requirements ac-
cording to WHG:
VEGASWING 61 Ex with
•
Oscillator SWE60Z EX
•
Signal conditioning instrument VEGATOR 536Ex, 537Ex and
636Ex, VEGALOG or SPLC (safety-oriented PLC)
The measuring system can be used for level detection of liquids 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 ac-
cording to SIL:
VEGASWING 61 Ex with
•
Oscillator SWE60Z EX
•
Signal conditioning instrument VEGATOR 636Ex or SPLC (safety-
oriented PLC)
General information
WRA
SIL