VEGA VEGAWELL 52 4 … 20 mA_HART Pt 100 - Manual (Page 16)

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Fig. 7: Connect VEGAWELL 52 to power supply
1 Direct connection
2 Connection via VEGABOX 02
3 Connection via housing
I f screened cable is necessary, connect the cable screen on both ends
to ground potential. In the plastic housing, in VEGABOX 02 or in
VEGADIS
12, the screen must be connected directly to the internal
ground terminal. The ground terminal outside on the housing must be
connected to the potential equalisation.
I f potential equalisation currents are expected, the connection on the
processing side must be made via a ceramic capacitor (e. g. 1 nF,
1500 V). T
he low frequency potential equalisation currents are thus
suppressed, but the protective effect against high frequency interfer-
ence signals remains.
Cable screening and
grounding
16 VEGAWELL 52 • 4 … 20 mA/HART Pt
5 C onnecting to power supply
35402
-EN
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