VEGA VEGABAR 74 4 … 20 mA_HART - Manual (Page 21)

7 S etup with PACTware™
7 .1 Connect the PC with VEGACONNECT 3
~
=
2
3
1
4
Power supply
VEGACONNECT 3
PACTware / TM
Fig. 8: Connecting the PC to the signal cable
1
RS232 connection (with VEGACONNECT 3) or USB connection (with
VEGACONNECT 4)
2 VEGABAR 74
3 HART adapter cable
4 HART resistance 250 Ohm (optional depending on the processing)
N ecessary components:
l
VEGABAR 74
l
PC with PACTware™ and suitable VEGA DTM
l
VEGACONNECT 3 or 4 with HART adapter cable (art. no.
2.25397)
l
HART resistance approx. 250 Ohm
l
P
ower supply unit
Note:
W
ith power supply units with integrated HART resistance
(
internal resistance approx. 250 Ohm), an additional external
resistance is not necessary (e.g. VEGATRENN 149A, VEGA-
DIS
371, VEGAMET 381/624/625, VEGASCAN 693). I n such
cases, VEGACONNECT 3 can be connected parallel to the
4 … 20
mA cable.
Connecting the PC to the
signal cable
VEGABAR 74 - 4 … 20 mA/HART 21
S etup with PACTware™
28432
-
EN
-070718