29
Reference Manual
00809-0200-4840, Rev BA
December 2014
Section 4: Configuration
4.2.9
Simulate current output
This forces a fixed output current in the range 4 to 20 mA. This feature
temporarily
overrides the
normal function of the transmitter’s PV driving the 4–20mA Current Output until exiting to the
previous menu.
Note
The simulation is automatically cancelled after 20 minutes, and the output current
returns to representing the transmitter’s PV.
Field Communicator or AMS
To fix the output current:
1.
From the
Home
screen, select
3: Service Tools
.
2.
Select
5: Simulate
.
3.
Select
2: Loop Current
.
4.
Select
1: Loop Test
.
5.
Select the required output current e.g.
1: 4mA
.
6.
When a message appears saying the output current is fixed, press “
OK
”.
7.
Select
4: End
to exit and restore the output current to normal.
Note
When messages appear, take appropriate action if needed and press “
OK
”.
Rosemount 3490 Series Control Unit
To fix the output current:
1.
From the
Main Menu
screen, select
SETUP
.
2.
Select the transmitter (e.g. “
Tx1: 3107
”).
3.
Select
SYSTEM
, and then select
TRIM
.
4.
Select
Fix Current
.
5.
Follow on-screen instructions to input the required output current.
(Press the
Enter
(
) key if prompted to change the mode to “off-line”).
6.
When finished, select “
Quit
” to exit to the previous menu.
Fast Keys
3, 5, 2, 1
Choose analog output level
1. 4mA
2. 20mA
3. Other
4. End
1. 4mA
ENTER
ABORT
(Field Communicator Screen)
Fix Current
0.000
Esc=Quit =Edit
(Rosemount 3491 Screen)
Содержание 3107
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