VEGA VEGASON 54V…56V - Manual (Page 15)

VEGASON 54V … 56V 15
15 sensors via one two-wire cable on the VEGALOG 571 processing system
• 15 sensors with voltage supply and digital output signals via one two-wire cable on an input
card of the VEGALOG 571 processing system.
• Display of measured values integrated in the sensor.
• Optional external indicating instrument (can be mounted up to 25 m separated from the
sensor in Ex area).
• Adjustment with the PC or adjustment module MINICOM (can be plugged into the sensor or
in the external indicating instrument VEGADIS 50).
• Max. resistance of the signal cable with 15 sensors on one two-wire cable 10
W per wire
(instead of 15
W) or 1000 m cable length.
Types and versions
1) Sensor cables should be screened. Grounding of
the cable screens at both ends is recommended.
However make sure that no earth compensation
currents flow via the screens
Earth compensation currents can be avoided by
potential equalisation lines or if the cable screen is
grounded at both ends - by connecting one end
(e.g. in the switching cabinet) via a capacitor (e.g.
0.1 µF; 250 V) to earth potential.
VEGALOG
571 CPU
VEGALOG
571 EV
2
2
CPU
2
2
4
2
4
4
2
Processings see
product information
"Signal conditioning
instruments series
500"
Screened cable in case of electro-
magnetic interferences
1)
VEGALOG 571 processing system
with input cards in 19" rack. 15
sensors on one module card and
two-wire cable
Interface cable
RS 232
VEGASON 51V… 56V
(15 sensors per two-wire cable -
individual grouping)
VEGA-
CONNECT 2
VEGADIS 50
Current outputs
Voltage outputs
Relays
Digital wiring
Fault signals
Connection to all bus
systems
Transistor outputs
RS 232