Myron L 729II - Manual (Page 19)

F. 0-10 VDC RECORDER OUTPUT
The 0-10 VDC output is designed to give the user the capability
of sending a signal to a remote meter, recorder, PLC or SCADA
system.
1. CONNECTION
1. Place the user supplied interface cable and watertight
cable restraint into the enclosure’s appropriate access
hole. Skip for OEM.
2. Connect the Recorder’s plus (+) and minus (-) terminal
wires to the Recorder output connectors. (See figure
II.E.1.)
3. Refer to Section V.C.1.b for the procedures to calibrate
the 0-10 VDC voltage output.
2. VOLTAGE DIVIDER
A voltage divider gives the user the ability to scale or tailor the
output to a particular need or requirement due to the input of
another device, i.e. the output of the Main CB is 0-10V while the
input requirement of a particular recording device is 0-5V.
a. INSTALLATION
Briefly—
Two resistors are installed across the 0-10V output.
The output is recalibrated to required voltage.
Requirements
Select two (2) resistors as listed;
For 0-5V Output both “A & B” are 2K Resistors.
For 0-1V Output “A” is a 9K resistor and “B” is a 1K resistor.
WARNING: BEFORE STARTING, IF MONITOR/
CONTROLLER IS INSTALLED, ENSURE THE POWER IS
OFF. FAILURE TO DO SO COULD CAUSE DAMAGE TO
THE INSTRUMENT, AND COULD BE HARMFUL OR FATAL
TO PERSONNEL. ONLY QUALIFIED PERSONNEL SHOULD
INSTALL ELECTRICAL EQUIPMENT.
Physical
If the front panel has all ready been removed from the enclosure
skip to #3.
1. Using a standard slot screwdriver remove the four (4)
screws on the front panel.
2. Carefully wiggle the front panel to loosen and pull
gently toward you. Do not pull more than about
8 inches/20CM or you could damage the wiring
harness.
3. Turn the front panel around so that the back side is
facing you and set aside for now.
4. Solder two selected resistors together as shown in
figure II.F.1.
5. Attach leads to recording device as shown in figure
II.F.1.
6. Attach resistors to 0-10V Output as shown in figure
II.F.2.
Ensure resistors and leads DO NOT short to each
other or to any part of the CB assembly.
7. Recalibration is required, see Calibration Procedures,
section V.C.
Reassembly
1. Carefully reinstall the front panel, bottom first, ensure
no wires have been pinched.
2. Reinstall the four (4) screws and tighten.
3. To operate, turn power ON.
0-10V Output
+
-
A
B
+
-
Recording
Device
FS SW
BK WT RD GN NU R- R+
3S
SENSOR LEADS
CAL
0-10VDC
OUTPUT
NEW OUTPUT
AS SELECTED
+ -
Main CB Assembly
15
Figure II.F.1
Figure II.F.2
!
CAUTION - READ FOLLOWING CAREFULLY