VEGA VEGAFLEX 67 (-40…+150°C) Profibus PA - Manual (Page 9)

TS
d1
h1
h2
d2
1
L2
L1
Fig. 2: Interface measurement
1 Reference plane
d1 Distance to the interface
d2 Distance to the level
TS
Thickness of the upper medium (d1 - d2)
h1 Height - Interface
h2 Height - Level
L1
Lower medium
L2 Upper medium
The interface is directly processed by the sensor and outputted as
digital output signal.
The indication of the indicating and adjustment module and PACTware
output the distance to the interface (d1) in m(d).
Power supply via the Profibus DP/PA segment coupler or VEGALOG
571 EP cards. A two-wire cable according to Profibus specification
serves as carrier of both power and digital data transmission for
multiple sensors. The instrument profile of VEGAFLEX 67 corresponds
to profile specification version 3.0.
The backlight of the indicating and adjustment module is powered by
the sensor. Prerequisite is a certain level of operating voltage.
The data for power supply are specified in chapter "Technical data".
The optional heating requires its own operating voltage. You can find
details in the supplementary instructions manual "Heating for indicat-
ing and adjustment module".
This function is generally not available for approved instruments.
The GSD (instrument master files) and bitmap files necessary for
planning your Profibus-DP-(PA) communication network are available
from the download section on the VEGA homepage www.vega.com
under "Services - Downloads - Software - Profibus". There you can
Output signal
Power supply and bus
communication
GSD/EDD
VEGAFLEX 67 • Profibus PA 9
3 Product description
31855
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EN
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