Yokogawa EJA115 User Manual
Page 22
IM 01C22T01-01E
2-15
2. HART COMMUNICATOR OPERATION
6
F0231.EPS
Because the reading on the
ammeter is 4.000 mA, select YES
and press ENTER (F4).
If the reading is not 4.000 mA,
select item 2. NO. Repeat steps
and until the ammeter reads
4.000 mA.
EJA:
Fld dev output 4.000
mA equal to reference
meter?
1 Yes
2 No
HELP
SET
ABORT
ENTER
EJA:
Setting fld dev
output to 20mA
DEL
SET
ABORT
OK
7
4
4
5
5
Press OK (F4), and the transmitter
outputs the output signal of 100%.
EJA:
Enter meter value
20.000
HELP
DEL
ABORT
ENTER
8
Carry out the same procedures as
those described under and .
EJA:
Fld dev output 20.000
mA equal to reference
meter?
1 Yes
2 No
HELP
ABORT
9
Returning fld dev to original
output appears.
DEL
ENTER
(OK)
(ENTER)
(ENTER)
‘1 9.0 5 0‘
EJA:
NOTE-Loop may be
returned to automatic
control
HELP
ESC
10
Press OK (F4).
DEL
OK
(OK)
(ENTER)
Ammeter reading: 19.050
Ammeter reading: 20.000
Ammeter reading: 4.000
1
F0232.EPS
Select the Scaled D/A trim item.
EJA:
Trim analog output
1 D/A trim
2 Scaled D/A trim
HELP
SET
HOME
OK
EJA:
WARN-Loop should be
removed from
automatic control
DEL
SET
ABORT
OK
2
Press OK (F4).
EJA:
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).
The same operations as for D/A
trim are required when selecting
item 3. Proceed.
EJA:
Set scale- Lo output
value
4
4
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 250
Ω
resistor (1 V), and
press ENTER (F4).
DEL
ENTER
(OK)
(ENTER)
‘1’
EJA:
Set scale- Hi output
value
20
20
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).
EJA:
Trim will be scaled
from 1.000 to 5.000
1 Proceed
2 Change
HELP
SET
ABORT
ENTER
EJA:
Connect reference
meter
DEL
SET
ABORT
OK
7
Connect the voltmeter, and press
OK (F4).
EJA:
Setting fld dev
output to 4mA
HELP
DEL
ABORT
OK
8
Press OK (F4). The output signal of
0% is output.
(OK)
(OK)
(ENTER)