40
10 Setup with PC/notebook (VEGACONNECT)
VEGAPULS 31 • Two-wire 4 … 20 mA/HART
57820-EN-191014
10 Setup with PC/notebook (VEGACONNECT)
10.1 Connect the PC
1
2 4
3
5
OPEN
TWIST
USB
LO
CK
Fig. 27: Connecting the PC to the signal cable
1 Sensor
2 HART resistance 250 Ω (optional depending on evaluation)
3 Connection cable with 2 mm pins and terminals
4 Processing system/PLC/Voltage supply
5 Interface adapter VEGACONNECT
Note:
With power supply units with integrated HART resistance (internal
resistance approx. 250 Ω), an additional external resistance is not
necessary. This applies, e.g. to the VEGA instruments VEGATRENN
149A, VEGAMET 381, VEGAMET 391. Common Ex separators are
also usually equipped with a sufficient current limiting resistance. In
such cases, the interface converter can be connected parallel to the
4 … 20 mA cable (dashed line in the previous illustration).
Via interface adapter to
the signal cable