3-9
Analog Input Calibration, Cont.
Step Procedure,
Cont.
6.
In the Current Value box, check the Update button. This causes
the AI to look for it's source at the terminals instead of a Test
Value.
7.
Begin the calibration starting with the first selection, Low
Calculation Point.
8.
Apply appropriate input, 1 volt or 4 ma to the AI terminals.
9.
Enter a value (typically zero) representing the Low Cal Point and
representing the desired engineering units. Click the OK button.
The Current Reading value on the pop up entry screens will be placed in
the Reading column and represent values from the previous calibration.
User entered values will be displayed in the Entry column.
10.
Move to the 100% Calibration Value.
11.
Apply 5 volts or 20 ma to the AI terminals (depending upon
jumpeer settings).
12.
Enter a value representing full range and representing the
desired engineering units. Click the OK button.
13.
If 3 Point calibration was selected, move to the 50% Calibration
Value.
14.
Apply 3 volts or 12 ma to the AI terminals (depending upon
jumpeer settings).
If Performing a 5 point calibration, you will need to add additional steps for
the 25% and 75% Calculation points.
Figure 3–2 XRC-195 Board- Analog Input Calibration Points
Содержание XRC6490
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