DataView™ LI55 Level Controller
Quick Start
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Repeater Output Wiring (4-20 mA Output Connections)
Connections for the 4-20 mA transmitter output to transmitters or other
devices are made to the connector terminals labeled MA OUT. The 4-20
mA output may be powered internally or from an external power supply.
Internal Power - The DataView provides an internal 24 VDC, 40 mA
power supply that can be used to power the repeater loop if
required (follow the illustration below on the left). This circuit will
provide the excited 4-20 mA signal from the display to any device
that will accept the 4-20 mA signal.
External Power - This circuit requires a separate VDC power supply
be used to power the repeater loop (follow the illustration below on
the right). This circuit will provide a passive 4-20 mA signal from
the display to any device that will accept a 4-20 mA signal.
Note:
you will not see a 4-20 mA signal unless the external power
supply is added to the loop.
12-35 VDC
Power
Supply
+
4-20 mA
Input Meter
-
+
R
I-
I+
1
3
2
RELAY1
3
2
1
24 V
-
4-20 mA Input
Remote Display,
Chart Recorder, Etc.
-
+
R
I-
I+
MA OUT
1
3
2
RELAY1
3
2
1
24 V
MA OUT
DataView Repeater Output
Internal Power Wiring
DataView Repeater Output
External Power Wiring
Analog Output Transmitter Power Supply
The internal 24 VDC power supply powering the analog output may be
used to power other devices, if the analog output is not available. The
DataView's "I+" terminal is the +24 V and the "R" terminal is the return.
This power supply is capable of sourcing up to 40 mA.
