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2 connection of the sensor, Two-wire technology, Four-wire technology – VEGA VEGASON 51K…53K User Manual

Page 37: Electrical connection, Loop powered), Separate supply)

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VEGASON 51K … 53K

37

Electrical connection

-

+

ESC

OK

Tank 1
m (d)
12.345

+ -

+

-

1 2

C

5 6 7 8

4

3

1 2

C

5 6 7 8

4

3

(+) (-)

Commu-

nication

+ -

4...20 mA

Display

L1 N

-

+

ESC

OK

Tank 1
m (d)
12.345

+

-

1 2

C

5 6 7 8

4

3

1 2

C

5 6 7 8

+

-

Commu-

nication

4...20 mA

Display

Supply voltage
4 … 20 mA (passive)

1)

To the indicating instrument in the
sensor cover or to the external indicat-
ing instrument VEGADIS 50

Sockets for connection of
the HART

®

-handheld or

the VEGACONNECT

Two-wire technology

(loop powered)

Four-wire technology

(separate supply)

Supply voltage

4 … 20 mA (active)

2)

Terminals
(max. 2,5 mm

2

wire cross-section)

Opening
buckets

pluggable
adjustment
module
MINICOM

5.2 Connection of the sensor

After having mounted the sensor in the meas.
position according to the instructions in chap-
ter 4 "Mounting and installation“, loosen the
closing screw on the top of the sensor. The
sensor cover with the optional indication
display can then be opened. Unscrew the
compression screw and shift the screw over
the approx. 10 cm dismantled connection
cable. The compression screw of the cable
entry is protected with a safety lock-in posi-
tion against automatic loosening.

Now loop the cable through the cable entry
into the sensor. Screw the compression
screw on the cable entry and clamp the dis-
mantled wires of the cable to the appropriate
terminal positions.

The terminals operate without terminal screw.
Press the white opening buckets with a small
screwdriver and insert the copper core of the
connection line into the terminal opening.
Check the position of the lines in the terminal
position by slightly pulling on the connection
lines.

1)

4 … 20 mA passive means that the sensor takes a
current of 4 … 20 mA (consumer), depending on
the level.

2)

4 … 20 mA active means that the sensor provides
a current of 4 … 20 mA (current source),
depending on the level.