APC AXFA11G user manual Example 3 of Other Settings Trim Analog Output

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.)

F0814-1.EPS

Open the “Output trim” display:
1		1. Device Setup					2. Diag/Service	2. Adjustment	3. D/A trim
								Select “D/A trim”.
		AXFA11 : FI-1201
		Adjustment
	1			Auto Zero Exe
	2			Magflow Zero
			3	D/A trim
	4			Scaled D/A trim
					SAVE	HOME

2

3

4

5

AXFA11 : FI-1201 WARN-Loop should be removed from automatic control

ABORT OK

AXFA11 : FI-1201 Connect reference meter

ABORT OK

AXFA11 : FI-1201 Setting fld dev output to 4mA

ABORT OK

AXFA11 : FI-1201

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.)

F0814-2.EPS

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