Yokogawa EJX440A - Manual (Page 31)

<3. Operation>
3-21
IM 01C25T01-01E
1
F0334-1.ai
Select the Scaled D/A trim item.
EJX:YOKOGAWA
Analog output trim
1 D/A trim
2 Scaled D/A trim
3 Clear D/A trim
HELP SET HOME OK
EJX:YOKOGAWA
WARN-Loop should be
removed from
automatic control
DEL SET ABORT OK
2
Press OK (F4).
EJX:YOKOGAWA
Trim will be scaled
from 4.000 to 20.000
1 Proceed
2 Change
HELP DEL ABORT ENTER
3
Select Change, and press
ENTER (F4).
When item 3. Proceed is
selected, D/A trim must be
carried out.
EJX:YOKOGAWA
Set scale- Lo output
value
4.000000
1
HELP ABORT
4
Enter the value read on the meter
when the signal is 4 mA. In this
case, Enter the value of the
voltage across a 250Ω resistor
(1 V), and press ENTER (F4).
DEL ENTER
(OK)
(ENTER)
‘1’
EJX:YOKOGAWA
Set scale- Hi output
value
20.000000
5
HELP ABORT
5
Enter the value read on the meter
when the signal is 20 mA. Then,
enter 5, and press ENTER (F4).
DEL ENTER
(ENTER)
‘5’
Example 2: To adjust using a voltmeter
6
Select Proceed and press
ENTER (F4).
EJX:YOKOGAWA
Trim will be scaled
from 1.000 to 5.000
1 Proceed
2 Change
HELP SET ABORT ENTER
EJX:YOKOGAWA
Connect reference
meter
DEL SET ABORT OK
7
Connect the voltmeter, and press
OK (F4).
(OK)
(ENTER)
1. Device setup
2 Diag/Service
3. Calibration
2. Analog output trim
2. Scaled D/A trim
F0334-2.ai
EJX:YOKOGAWA
Enter meter value
1.000000
1.010
HELP ABORT
9
9 8
Enter the reading of the voltmeter
(1.010), and press ENTER (F4).
(The output of the transmitter
changes.)
DEL ENTER
(ENTER)
(ENTER)
‘1 . 0 1’
EJX:YOKOGAWA
Scaled output: 1.000
equal readout
device?
1 Yes
2 No
HELP ABORT
10
DEL ENTER
Voltmeter reading: 1.010
If the reading on the voltmeter is
1.000, select Yes and press
ENTER (F4).
If the reading is not 1.000, select
No. Repeat steps and until
the voltmeter reads 1.000 V.
Voltmeter reading: 1.000
11
Press OK (F4). A 100% output
signal is output.
EJX:YOKOGAWA
Setting fld dev
output to 20mA
HELP SET ABORT OK
EJX:YOKOGAWA
Enter meter value
5.000000
5.210
HELP DEL ABORT ENTER
12
EJX:YOKOGAWA
Scaled output: 5.000
equal readout
device?
1 Yes
2 No
HELP DEL ABORT ENTER
13
EJX:YOKOGAWA
NOTE-Loop may be
returned to automatic
control
HELP ABORT
14
Enter the reading of the voltmeter
(5.210), and press ENTER (F4).
DEL OK
(ENTER)
“Returning fid dev to
original output”
(OK)
(ENTER)
‘5 . 2 1’
(OK)
Voltmeter reading: 5.210
Select Yes and press ENTER
(F4).
Press OK (F4).
Voltmeter reading: 5.000
EJX:YOKOGAWA
Setting fld dev
output to 4mA
HELP DEL ABORT OK
8
Press OK (F4). A 0% output
signal is output.
(OK)