Wiring Plan - Vega VEGABAR 87 Quick Setup Manual

4 Connecting to power supply and bus system
Overview
Connection compartment
8
6. Check the hold of the wires in the terminals by lightly pulling on
them
7. Connect the cable screening to the internal ground terminal, con-
nect the outer ground terminal to potential equalisation in case of
power supply via low voltage
8. Connect the lead cable for voltage supply in the same way ac-
cording to the wiring plan, in addition connect the ground conduc-
tor to the inner ground terminal when powered with mains voltage.
9. Tighten the compression nut of the cable entry gland. The seal
ring must completely encircle the cable
10. Screw the housing lid back on
The electrical connection is finished.
Information:
The terminal blocks are pluggable and can be removed from the
housing insert. To do this, lift the terminal block with a small screwdriv-
er and pull it out. When inserting the terminal block again, you should
hear it snap in.
4.2

Wiring plan

1
Fig. 4: Position of connection compartment (Modbus electronics) and electron-
ics compartment (sensor electronics)
1 Connection compartment
2 Electronics compartment
( )
4
Fig. 5: Connection compartment
1 USB interface
2 Slide switch for integrated termination resistor (120 Ω)
3 Modbus signal
4 Voltage supply
USB
MODBUS
power supply
1 3 4
+ 2 off on
(-)
VEGABAR 87 • Modbus and Levelmaster protocol
2
1
2
5
3