IM 01C25T01-01E
3-15
3. OPERATION
3.5.6
Test Output
This feature can be used to output a fixed current for
loop checks. The available range for test output
depends on the settings for the
AO lower limit
and
AO upper limit
parameters, whose limit is from 3.6
mA (-2.5%) to 21.6 mA (110%) .
1
F0325.EPS
Set the control loop in manual
mode, and press
OK (F4)
.
EJX:YOKOGAWA
WARN-loop should be
removed from
automatic control
DEL
SET
ABORT
OK
EJX:YOKOGAWA
Choose analog output
level
1 4mA
2 20mA
3 Other
4 End
DEL
SET
ABORT ENTER
2
Select
Other,
and press
ENTER
(F4)
.
Supplementary explanation.
1. 4 mA:
Outputs a 4 mA current signal
2. 20 mA:
Outputs a 20 mA current signal
3. Other:
Sets a desired output using the
alphanumeric keys
4. End: Exits
EJX:YOKOGAWA
Output
12
HELP
DEL
ABORT ENTER
3
Enter
12
, and press
ENTER (F4)
.
A fixed current of 12 mA is output.
EJX:YOKOGAWA
Fld dev output is
fixed at 12.000 mA
DEL
ABORT
4
Press
OK (F4)
.
HELP
SEND
OK
×
2
(ENTER)
×
3
(ENTER)
(ENTER)
(OK)
(OK)
‘1 2’
(OK)
EJX:YOKOGAWA
Choose analog output
level
1 4mA
2 20mA
3 Other
4 End
DEL
ABORT
5
To finish the loop test, select
End
,
and press
ENTER (F4)
.
HELP
SEND
ENTER
EJX:YOKOGAWA
NOTE-loop may be
returned to automatic
control
DEL
ESC
6
Press
OK (F4)
.
HELP
SEND
OK
Example: To output 12 mA (50%)
1. Device setup
2. Diag/Service
2. Loop test
CAUTION
Test output continues for approximately 10
minutes, then is released automatically. Even if
the HART communicator power supply is turned
off or the communication cable is disconnected,
test output will continue for approximately 10
minutes.
