PROGRAMMING OF THE DIGITAL OUTPUT (
SET DO1 SET DO2
)
This setting is enabled only in the model with digital outputs (-p suffix in the order).
The DO1 and DO2 digital outputs can be used to signal alarms (ALR) using a comparing with two adjustable threshold
for each output. The DO1 modality setting is independent from DO2. In the menu SET DO1 and SET DO2 it’s possible
to program the function of all digital outputs. In these menus are available the following modality: ALR SYS 3PH and
ALR SYS 123. With ALR SYS 3PH the digital output will function as alarm verifying that the three phase value
(average) doesn’t exceed the threshold set (ALR HI and ALR LO). With ALR PH_ 123 the digital output will
function as alarm verifying that the maximum value of the single phases doesn’t exceed the maximum threshold set
(ALR HI) and that the minimum value of the single phases doesn’t come down the minimum threshold set (ALR LO).
The activation of the alarm output will come after some seconds of delay set (ALR DL).
ELM-96
instruction manual
IM425-U v3.1
pag. 9
Enter to menu:
seT UP
Æ
seT Up
RESET
SET DO1
SET DO2
SET HR_
--- OFF OFF
(the visualization depends on the settings and the I/O status)
ALR SYS 3PH
To choose the output modality
ALR PH_ 123
ALR SEl uLN
To chose the parameter
ALR SEl AMP
to control
ALR SEl VLL (see
variable
list)
ALR SEL FRE (only for ALR SYS 3PH)
AlR sel PH_
Set maximum alarm threshold
Increase
ALR HI
Decrease (after
0
there is
OFF
)
Set minimum alarm threshold
Increase
ALR LO
Decrease (after
0
there is
OFF
)
Set delay
Increase
ALR Dl
Decrease
ENTER IN THE SETUP
Confirm and end of digital output settings.
From the measures visualization, press the
A
key for at least 5 seconds, the message SeT Up will appear on the
E
displays.
CHOOSE THE DIGITAL OUTPUT TO PROGRAM
Press repeatedly the
B
key until the message SET DO1 (DO1 output) or SET DO2 (DO2 output) appears on the
E
display. Press the
A
key to select this setting.
SELECT THE MODALITY OF FUNCTIONING OF THE DIGITAL OUTPUT
To select the functioning mode, using the
B
key: ALR SYS 3PH, (alarm on three phase value) and ALR PH_ 123
(alarm on minimum and maximum single phase value). Press
A
key to confirm.
CHOOSE THE PARAMETER TO LINK TO THE DIGITAL OUTPUT
With an alarm modality set, it’s necessary to select the parameters associated to the alarm output; by pressing the
B
key
until the parameter choice appears on the third part (L3) of
E
display and the glowing the corresponding led on the
D
bar.
Press
A
key to confirm the set.
SET THE HIGH AND THE LOW THRESHOLDS
On
E
display will appear the message ALR Hi with the high threshold value; confirming with the
A
key on the same
display will appear the message ALR LO with low threshold value. The
B
key (to increase),
A
and
B
keys together (to
decrease) are used to set the high and the low thresholds values. The range depends by the parameter and it is linked to
the CT and VT ratios. Pressing
A
key to confirm.
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.
The low threshold will be lower than high threshold. If the high threshold is set as OFF the low threshold will have the
range of the high threshold.
