User Manual

54 VEGAPULS 42 and 44 – 4 … 20 mA
Electrical connection
+-
+-
2.23274
1
(+) L1
2
Communication
8765
Display
4-20mA
4-+3
N
-
OK
+
ESC
Tank 1
m (d)
12.345
+-
Display
5678
Communication
2
-
+
4-20mA
1
2.23272
-
OK
+
ESC
Tank 1
m (d)
12.345
Power supply
4 … 20 mA (passive)
1)
To the indicating instrument in the
sensor lid or to the external indicating
instrument VEGADIS 50
Sockets for connection of
the HART
®
handheld or
the VEGACONNECT
Two-wire technology in
plastic housing
(loop powered)
Four-wire technology in
plastic housing
(separate supply)
Power supply
4 … 20 mA (active)
2)
Terminals
(max. 2.5 mm
2
wire cross-section)
Opening
tabs
Pluggable
adjustment
module MINI-
COM
5.2 Connection of the sensor
After mounting the sensor at the measure-
ment location according to the instructions in
chapter "4 Mounting and installation“, loosen
the closing screw on top of the sensor. The
sensor lid with the optional indication display
can then be opened. Unscrew the sleeve nut
and slip it over the connection cable (after
removing about 10 cm of insulation). The
sleeve nut of the cable entry has a self-lock-
ing ratchet that prevents it from opening on
its own.
Now insert the cable through the cable entry
into the sensor. Screw the sleeve nut back
onto the cable entry and clamp the stripped
wires of the cable into the proper terminal
positions.
The terminals hold the wire without a screw.
Press the white opening tabs with a small
screwdriver and insert the copper core of the
connection cable into the terminal opening.
Check the hold of the individual wires in the
terminals by lightly pulling on them.
1)
4 … 20 mA passive means that the sensor
consumes a level-dependent current of
4 … 20 mA (consumer).
2)
4 … 20 mA active means that the sensor provides
a level-dependent current of 4 … 20 mA (current
source).
Version with plastic housing
Cable entry
M20 x 1.5
To the display in the lid or
the external indicating
instrument