VEGA VEGACONNECT 3 - Manual (Page 16)

VEGACONNECT 3
PACTware /
VEGA-DTM
TM ware / e /
2
3
1
Fig. 8: Connection VEGAMET/VEGASCAN via I²C interface
1
RS232 connection
2 I²C adapter for VEGACONNECT 3 (article no. 2.27323)
3 VEGACONNECT 3
Note:
Communication with the sensor is carried out with VEGAMET
624/625 and VEGASCAN 693 also via the front I²C interface of
the signal conditioning instrument. The connection of VEGA-
CONNECT
3 directly to the 4 … 20 mA sensor cable is not
possible.
5.2 Connection via HART
If the resistance of the connected processing system is less
than 230 Ohm, the digital adjustment signal is extremely
damped or short-circuited. Digital communication with the PC
is then no longer possible. With low impedance processing
systems, a resistance of approx. 230 Ohm must be integrated
into the 4 … 20 mA connection cable. The connection can be
either carried out in parallel to the sensor or via the resistor.
VEGAMET 624/625, VEGA-
SCAN 693
HART communication
16 VEGACONNECT 3
Connection examples
25641
-EN
-070726