VEGA VEGABAR 66 Profibus PA - Manual (Page 60)

60
10 Supplement
VEGABAR 66 • Profibus PA
36739-EN-130321
Ʋ Exd instrument 14 … 32 V DC
Operating voltage with illuminated display and adjustment module
Ʋ Non-Ex instrument 18 … 32 V DC
Ʋ Ex-ia instrument 18 … 24 V DC
Ʋ Exd instrument 18 … 32 V DC
Max. number of sensors on the DP/PA
segment coupler non-Ex/Ex
32/10
Electrical protective measures
Protection rating
Ʋ Transmitter IP 68 (25 bar)
Ʋ Housing, standard IP 66/IP 67 20)
Ʋ Aluminium and stainless housing
(optionally available)
IP 68 (1 bar) 21)
Ʋ External housing IP 65
Overvoltage category III
Protection class II
Approvals
Instruments with approvals can have different technical data depending on the version.
For that reason the associated approval documents of these instruments have to be carefully
noted. They are part of the delivery or can be downloaded under www.vega.com via "VEGA Tools"
and "serial number search" as well as via "Downloads" and "Approvals".
10.2 Information on Profibus PA
Instrument master file
The instrument master file (GSD) contains the characteristic data of the Profibus PA instrument.
These data are, e.g. the permissible transmission rates as well as information on diagnostics values
and the format of the measured value outputted by the PA instrument.
A bitmap file is also provided for the Profibus network planning tool. This file is installed automati-
cally when the GSD file is integrated. The bitmap file is used for symbolic indication of the PA instru-
ment in the configuration tool.
Ident number
Each Profibus instrument gets an unambiguous ident number (ID number) from the Profibus user
organisation (PNO). This ID number is also included in the name of the GSD file. For VEGABAR 66
the ID number is 0 x 076F(hex) and the GSD file BR__076F.GSD. As an option to this manufactur-
er-specific GSD file, PNO provides also a general so-called profile-specific GSD file. For VEGABAR
66 you have to use the general GSD file PA139701.GSD. If the general GSD file is used, the sensor
must be set to the profile-specific ident number via the DTM software. By default, the sensor oper-
ates with the manufacturer-specific ID number.
Note:
20) Instruments with gauge pressure measuring ranges cannot detect the ambient pressure when submerged, e.g.
in water. This can lead to falsification of the measured value.
21) Only with instruments with absolute pressure ranges.