8. OPERATION VIA HART COMMUNICATOR
8.3.4.6Example 3 of Other Settings: Trim Analog Output
Fine output adjustment is carried out with “D/A trim” or “Scaled D/A trim”.
•D/A trim
“D/A trim” is to be carried out if the calibration digital ammeter does not read exactly 4.000 mA and 20.000 mA with output signals of 0% and 100%.
•Scaled D/A trim
“Scaled D/A trim” is to be carried out if the output is adjusted using a voltmeter or other types of meters with a 0% to 100% scale.
IMPORTANT
When “D/A trim” or “Scaled D/A trim” is carried out, the warning message “83:
Fix Cur Wng” is displayed on the display unit.
Example 1: For adjustments using an ammeter (capable of measuring ±1∝A.)
Open the “Output trim” display: |
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1 |
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| 1. Device Setup |
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| 2. Diag/Service |
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| 2. Adjustment |
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| 3. D/A trim | |||||||||
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| Select “D/A trim”. | |||||||||||||
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| AXFA11 : |
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| Adjustment |
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| 1 | Auto Zero Exe |
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| 2 | Magflow Zero |
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| 3 | D/A trim |
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| 4 | Scaled D/A trim |
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| SAVE |
| HOME |
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2
3
4
5
AXFA11 :
ABORT OK
AXFA11 :
ABORT OK
AXFA11 :
ABORT OK
AXFA11 :
Enter meter value
4.0000
HELP DEL ABORT ENTER
F4
(OK)
F4
(OK)
F4
(OK)
‘4.115’
F4
(ENTER)
Press OK (F4).
Connect an ammeter (capable of measuring ±1∝A), and press OK (F4).
Press OK (F4), and the AXFA11 outputs an output signal of 0%.
Ammeter reading: 4.115
Enter the ammeter’s reading of 4.115, and press ENTER (F4). (The output of the AXFA11 changes.)
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