Honeywell ControlEdge 900 platform, Руководство пользователя, Страница: 174 / 192

I/O Calibration
AI Calibration
162 900 Control Station User Guide Revision 9
May 2014
Calibrate AI channel
Calibrate AI Channel guides you through a procedure for calibrating an analog input channel. Perform the
steps in the order of the menu. Refer to the example AI calibration procedure.
Item Description
Instrument Status and
Instructions
This displays the status at each step of calibration. In order of appearance:
Ready
Connect AI 0% Reference
0% AI Cal Input
Connect AI 100% Reference
100% AI Cal Input
Save AI Calibration
AI Cal Failed (red) or Done (green)
Analog Input calibration may fail for the following reasons.
-The physical connection to the calibration source is bad.
-The selected Rack, Module, and Channel does not exist, or does not support AI
calibration.
-The selected input does not support the electrical range that you are trying to calibrate.
For example, the 16-channel high-level AI module does not support a range of 0-2
volts.
Reference
Indicates numeric input reference value and engineering units. Also indicates an invalid
module or channel.
Rack Number
Module Number
Channel Number
Enter the rack number, module number, and channel number of the AI to be calibrated,
then press Select Input.
Select Input
Select this to verify that the selected rack/module/channel is installed in the controller.
Calibrate 0% Input
Set the calibration source to the value shown next to Reference, then select this to
calibrate. Calibration takes 30 seconds. Status will indicate when calibration is
complete.
Calibrate 100% Input
Set the calibration source to the value shown next to Reference, then select this to
calibrate. Calibration takes 30 seconds. Status will indicate when calibration is
complete.
Save
Select this to save the channel calibration.
After calibration, return the Controller to Run mode. Use IO Calibration display (page 159) or Controller
Mode button (page 10).
Cancel Calibration
You can stop the calibration process at any time by pressing the Cancel Calibration button. The status goes
to “ready” and the previous calibration is restored.
Restore AI factory calibration
This restores the selected channel to its factory calibration settings. Enter the rack, module, and channel to
be restored, then press Restore Factory Calibration. Status will show “Restore AI Input”, then green
“Done” or red “Restore AI Failed.” After calibration, return the Controller to Run mode. Use IO
Calibration display (page 159) or Controller Mode button (page 10).