PROGRAMMING ANALOG OUTPUT (
SET AN OUT
)
Note: This menu is active only if the instrument has this option.
The connection of the analog output is on
AO+
and
AO-
terminals that replace the
DI+
and
DI-
terminals when this
option is installed.
The maximum resistance of the load connected to the analog output is 400 ohm.
The analog output will supply a signal from 0 to 20 mA or from 4 to 20 mA (depending of the set) proportional to the
measure of the parameter selected and the and-scale set.
The analog output refresh time is linked to the display refresh time.
Enter to menu:
seT UP
Æ
seT Up
RESET
SET DO1
ELM-4D1P
instruction manual
IM443-U v0.7
pag. 11
SET DO2
SET AN OUT
SET HR_
--- 0FF oFF
(the visualization depends on the settings and the I/O status)
AN SEl VLN
AN SEl AMP
AN SEl AN
AN SEl P.f
To chose the parameter
AN SEl ACT (see variable list)
AN SEl REA
AN SEl APP
AN SEl VLL
AN SEL FRE
AN sel T
°
c
Set high threshold
Increase
AN HI
Decrease
Set low threshold
Increase
AN LO
Decrease
Select analog output
AN 0-20
values
AN 4-20
Confirm and end analog output settings.
SELECT THE PARAMETER TO LINK TO THE ANALOG OUTPUT
After the digital outputs menu (SET DO1 and SET DO2), pressing the
C
key the message SET AN OUT will
appear on the
F
display. To accede to the menu programming press the
A
key, the message SET will appear on the
G
display, on the
F
display and on
D
led bar will appear the parameter to link to the analog output and selectable
pressing more time the
B
key. Pressing the
A
key to confirm the parameter selected.
SET THE HIGH AND THE LOW THRESHOLD
Now, it’s necessary to set the end scale value (high limit) that will appear on
F
display preceded from the message
AN HI. As in the previous setting this value is modifiable with
B
and
C
keys. The
k
or
M
led mean respectively x10
3
or x10
6
. Confirming with
A
key.
The threshold set is linked with CT and VT ratios, for this reason it’s necessary to make this operation after the
programming of the CT and VT. The end scale value must be confirmed when CT and VT ratios are modified.
Note: The P.F. scale is fixed from P.F. -0 capacitive (20mA) to +0 inductive (0mA); with P.F. 1 will have 10mA (0-20
scale), 12 mA (4-20mA scale).
At the same way of the high threshold setting, it’s necessary to set the low threshold. The value must be lower then
the maximum threshold.
SET THE LIMIT VALUES OF THE ANALOG OUTPUT
After the confirmation of the end scale on
F
display will be displayed the message AN with the limit values of the
analog output: 0-20 or 4-20 selectable with the
B
and
C
keys. Confirm with
A
key.
