5. Analogue Output (4~20mA / Option)
This Option card converts weight value to Analog Voltage output(4~20mA) and transfers to external
devices(Recorder, P.L.C), controlled by voltage output.
5-1. Specification
- Output Voltage : 4~20mA output (Max.2~22mA)
- Accuracy : More than 1/1,000
- Temperature Coefficient : 0.01%/
℃
- Max. Loading Impedance : Max. 500
Ω
※
As we convert Digital signal(1/30,000 accuracy) to Analogue, so the accuracy will be lower
than Digital signal
5-2. Circuit Diagram and Pint Connection
1 : HI(+), 5 : (-)
※
“LO” terminal is not a “GND”, so this “LO” terminal do not be connected with other “GND” terminal
on other devices.
※
This output is proportioned on weight calibration and outputs 4~20mA.
5-3. Output Adjustment
①
. This output is adjusted as when the weight is “Zero”, output is “4mA” and When the weight is
“Full capacity”, output is “20mA”.
②
. If you need additional adjustment, please adjust with “VR1(Zero)”, “VR2(Span) on the Analog
Output PCB.
※
Remark
This Analog option card converts Displayed weight value(Micro-process data) to analog value on D/A
Converter(Digital to Analog converter)
This D/A Converter has Max. 1/4,000 accuracy, so this output is not suitable for high accuracy
application, like more than 1/3,000.
9pin D-sub Female connector
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