VEGA VEGAPULS 51V…54V - Manual (Page 16)

16 VEGAPULS 51 V … 54 V
VEGALOG
571 CPU
VEGALOG
571 EV
2
2
CPU
2 2
2
4
2
4
2
4
15 sensors via one two-wire line on the processing system VEGALOG 571
• Two-wire technology, voltage supply and digital output signals via one
two-wire line from the processing system VEGALOG 571.
• Up to 15 sensors on one two-wire line
• Meas. value indication integrated in the sensor
• Optionally external indicating instrument (can be mounted up to 25 m
separated from the sensor in Ex-area).
• Adjustment with PC or adjustment module (pluggable in sensor or in
external indicating instrument)
• Max. resistance of the signal line 15
Ω per wire or 1000 m cable length.
Processings see product information
"Signal conditioning instruments
series 500"
Screened line in case of electromagnetic
interferences
1)
Processing system VEGALOG 571
with input cards in 19"-rack. 15
sensors on one module card and
two-wire line
Interface cable
RS 232
VEGAPULS 51 … 53
(15 sensors per two-wire line,
individual grouping)
VEGA-
CONNECT 2
VEGADIS 50
Current outputs
Voltage outputs
Relays
Digital wiring
Fault signals
Connection to all
Bus-systems
Transistor outputs
1) Sensor lines should be looped in screened cables.
It is recommended to earth the cable screens on
both ends. However it must be noted that no earth
compensation currents flow over the screen. Earth
compensation currents are avoided in case of
earthing on both ends by connecting the cable
screen on one earth side (e.g. in the switching
cabinet) via a capacitor (e.g. 1 µF; 100 V) with the
earth potential.
Types and versions - Configuration of meas. systems