Calibrate Ai Channel; Cancel Calibration; Restore Ai Factory Calibration - Honeywell 900 User Manual

I/O Calibration
AI Calibration

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
Instrument Status and
Instructions
Reference
Rack Number
Module Number
Channel Number
Select Input
Calibrate 0% Input
Calibrate 100% Input
Save
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).
162
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.
Indicates numeric input reference value and engineering units. Also indicates an invalid
module or channel.
Enter the rack number, module number, and channel number of the AI to be calibrated,
then press Select Input.
Select this to verify that the selected rack/module/channel is installed in the controller.
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.
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.
Select this to save the channel calibration.
900 Control Station User Guide
Description
Revision 9
May 2014