VEGA VEGAPULS 45 VBUS - Manual (Page 36)

36 VEGAPULS 42, 44 and 45 – VBUS
Electrical connection
1 … 2 sensors on the VEGAMET 515V signal conditioning instrument
• Two-wire technology, power supply from the signal conditioning instrument, output signals
and power supply via one two-wire cable.
• Digital output signal, two sensors on one cable.
• Display of measured value in the sensor and in the signal conditioning instrument.
• Optional external indicating instrument (can be mounted up to 25 m away from the sensor in
Ex area).
• Adjustment with PC, signal conditioning instrument or adjustment module MINICOM (can be
plugged into the sensor or into the external indicating instrument VEGADIS 50).
• Max. resistance of the signal cable 15
Ω
per wire, max. 1000 m cable length.
1) Sensor wiring should be looped in screened cables.
In case of high frequency interference (> 1 MHz),
it is best to ground the cable screens on both
ends. Please make sure that no earth
compensation currents flow via the screens.
You avoid earth compensation currents (when
grounding at both ends) by connecting the cable
screen on one end (e.g. in the switching cabinet)
via a capacitor (e.g. 10 nF; 1500 V) with the
ground potential.
2
2
4
4
VEGAMET
515V
2
Processings see also Product
Information "Signal conditioning
instruments series 500"
Current outputs
Voltage outputs
Relays
Digital wiring
Fault signals
In case of electromagnetic interfer-
ences, screened cable should be
used (see following page)
VEGACONNECT 2
VEGAMET 515V signal condition-
ing instrument in housing type
505
VEGADIS 50