APC AXFA11G - Manual (Page 85)

IM 01E20C01-01E 8-11
8. OPERATION VIA HART COMMUNICATOR
8.3.4.6 Example 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
µ
A.)
F0814-1.EPS
1. Device Setup 2. Diag/Service 2. Adjustment 3. D/A trim
AXFA11 : FI-1201
Adjustment
1 Auto Zero Exe
2 Magflow Zero
3 D/A trim
4 Scaled D/A trim
HELP SAVE HOME ENTER
1
2
Select “D/A trim”.
Press OK (F4).
Connect an ammeter (capable of measuring
±
1
µ
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.)
AXFA11 : FI-1201
Connect reference
meter
HELP SEND ABORT OK
3
Open the “Output trim” display:
AXFA11 : FI-1201
WARN-Loop should be
removed from
automatic control
DEL DEL ABORT OK
AXFA11 : FI-1201
Setting fld dev
output to 4mA
DEL DEL ABORT OK
4
F4
5
(ENTER)
‘4.115’
AXFA11 : FI-1201
Enter meter value
4.0000
HELP DEL ABORT ENTER
F4
(OK)
F4
(OK)
F4
(OK)
F0814-2.EPS