VEGA D80 Hydrostatic pressure transmitters - Manual (Page 20)

20 Pressure transmitter D80
Electrical connection
Supply through a VEGA signal conditioning instrument
Standard wiring for non-standardised output.
Supply through a PLC with active input circuit
Processing is done by the PLC
+
-
1 2 3
+ - -
!
1 2 3
+ - -
Ammeter for local control
Pressure transmitter
terminals
Ammeter for local control
Pressure transmitter
terminals
U
K
PLC
4 … 20 mA
0/4 … 20 mA
Analogue transmission,
non-standardised
U
K DISBUS
3.4 Connection examples
Note:
An ammeter for local control of the output current can be connected to terminals 1 and 3. This
measurement can be carried out during operation without interrupting the supply cable.
The following connection examples are valid for direct connection to the terminals of the pres-
sure transmitter. When using the external connection housing, the connection is made to the
respective terminals of the housing.
Supply through a power supply unit
Processing is done by an indicating instrument.
~
+
-
1 2 3
+ - -
analogue / digital indicating
instrument
Ammeter for local control
Pressure transmit-
ter terminals
External energy source
U
K
U
A
U
H
4 … 20 mA