35
Wiring
(continued)
Step Six
ANALOG OUTPUT
The analog output of the LVU700 series is a loop powered 4-20 mA control circuit. The typical way to use this
feature is to connect a positive supply to the Power (+) input terminal and to sense the current flow out of the
Power (-) output terminal with a sampling resistor as shown in the following diagram.
The cabling should be a shielded twisted pair to minimize EMI interference. Typically 20 to 24 gauge wire is
used in this application. To access the terminals, gently remove the display from the housing.
When wiring is completed, restore the display to the housing and replace the cover.
The LVU700 series can operate without the display. When wired and powered correctly, the sensor will
continue to provide a proportional 4-20 mA signal.
VOLTAGE OUTPUT
LVU700 series can be configured as a 0 to 5 VDC or 0 to 10 VDC output. A resistor will need to be added to
the circuit to enable a voltage output (refer to the wiring diagram below).
0-5 VDC output
o
Add a 250 Ohm resistor
o
Actual output will be 1 to 5 VDC
0-10 VDC output
o
Add a 500 Ohm resistor
o
Actual output will be 2 to 10
VDC
