12.07.2015 Views

VEGAPULS WL 61 - 4 … 20 mA/HART - two-wire

VEGAPULS WL 61 - 4 … 20 mA/HART - two-wire

VEGAPULS WL 61 - 4 … 20 mA/HART - two-wire

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7 Setup with PACTware7 Setup with PACTware7.1 Connect the PCVia interface adapter tothe signal cable2 4LOCK13TWISTOPENUSB5Fig. 25: Connecting the PC to the signal cable1 Sensor2 <strong>HART</strong> resistance 250 Ω (optional depending on processing)3 Connection cable with 2 mm pins and terminals4 Processing system/PLC/Voltage supply5 Interface adapter, for example VEGACONNECT 4Note:With power supply units with integrated <strong>HART</strong> resistance (internalresistance approx. 250 Ω), an additional external resistance is notnecessary. This applies, e.g. to the VEGA instruments VEGATRENN149A, VEGAMET 381, VEGAMET 391. Common Ex separators arealso usually equipped with a sufficient current limitation resistance. Insuch cases, the interface converter can be connected parallel to the4 … <strong>20</strong> <strong>mA</strong> cable (dashed line in the previous illustration).28<strong>VEGAPULS</strong> <strong>WL</strong> <strong>61</strong> • 4 … <strong>20</strong> <strong>mA</strong>/<strong>HART</strong> - <strong>two</strong>-<strong>wire</strong>380<strong>61</strong>-EN-121011

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