EMM-D4h
instruction manual
IM443-U v0.7
pag. 7
Programming of the transformation ratio of the external current transformers (
SET CT
)
The programming of the CT ratio, intended as the ratio between the primary and the secondary circuit (example: with
CT 1000/5 it must be set 200), has to be performed by using the front keys.
After the enter in the setup (message
SETUP
on
F
display) pressing the
C
key, the message
seT
will appear on the
G
display and the message
CT
(Current transformer ratio) on the first
F
display; the transformation ratio value (set to
1 by the manufacturer) on the second and the third
F
display. Press
B
or
C
keys to increase or decrease the value
respectively (the variation is performed unit by unit). In order to speed up the operation, keep the
B
or
C
key pressed,
the variation will be performed by tens and hundreds. To increase or decrease the value by unit, it is necessary to
release and to press the button again. To confirm the set value, press the
A
button; in this way it is possible to enter
the next programming. If none key is pressed for 10 seconds, the instrument will automatically leave the programming
menu and the eventual setting SHALL NOT be stored.
- Programming of the transformation ratio of the external voltage transformers (
SET VT
)
After the precedent programming phase, on
F
display will appear the inscription
Vt
(voltage transformer) and the
value of the transformation rate of the external TV (set to 1 from the constructor), considered as the rate between
primary and secondary (example with TV 15/0.1 kV the value will be 150). In the same way at the programming of the
CT rate will be possible to set this value. If the external TV are not used the value to set will be 1. To confirm the value
press the
A
button.
If the instrument has not options the programming continues with the set of average time
AVG T’
and after with the
password
PASS
, then it come back at the first page
SETUP
. The presence or the absence of the options, neutral
current, digital output and serial output, will allow the visualization or not of the other settings.
Programming of the transformation ratio of the current transformer for the neutral current input (
CTN
)
(version with neutral current input)
This setting is active only for the models with this option installed; the message
SET
will appear on
G
display; the
message
CTN
(Current transformer neutral ratio) and the set value on the
F
display. In the same way at the
programming of the CT rate will be possible to set this value (example with CT 1000/5the value will be 200).
Pressing the
A
key, confirm and go away with the next setting.
Programming of the average time (
seT AVG T’
)
After the programming phase previously described, pressing another time the
A
key, on the
F
display will appear the
message
AVG T’
and the average time settable from 1 to 30 minutes.
To increase the value press the
B
key. To decrease it, press the
C
key. To confirm it press the
A
key.
The average time is the time used to calculate the average parameters (
avg
) and the maximum demand (
maxD
).
Programming of the energy visualization type and the use of the digital input (
seT EN
)
This setting allows to define the energy visualization type after the visualization of the temperature.
With
TB1 TB2
will have the separated visualization of the two bands of the active, reactive, and apparent energy; the
digital input will select the band (tb1 if opened, tb2 if closed). The
TB1
TB2
function is not present if the digital input
option is not installed. With
TOT PAR
will have the visualization of the partial and total energy counters; the digital
input is used (when it’s closed) to reset the partial counters. With
NORMAL
there will be only the visualization of total
counters (that it’s possible to reset from
RESET
menu). The status of the digital input is always readable from serial.
Programming insertion mode (
3PH
)
In
a
unbalance
three
phase
system
it’s
necessary
to
set
UN_BAL
(unbalance)
while
in
a
balance
system
(only
one
CT
and
only
one
VT)
the
correct
set
is
BALANC
(balance).
For
a
single
phase
insertion
it’s
necessary
to
set
1PH L1
.
Programming wiring connection mode (
MDE
)
This setting allows to definite the wiring type connection. It’s possible to chose 3 wires or 4 wires. With the 4 wires
connection the neutral parameter are displayed and enabled to use for the digital and analog outputs settings.
Programming of the synchronism type (
SYN MDE
)
In this setting for the synchronization type, it’s possible to choose
L1
to use the external frequency (on L1 phase) or
50
,
60
Hz to use the internal clock.
Programming
of
the
weight
of
the
active
and
reactive
energy
pulse
(
seT
PULSE
)
(only
for
vers.
with
digital
output)
After the above mentioned programming, by pressing the
A
key again, the message
PUlse
will appear on the
F
display and the value of the weight of one pulse settable on three phase values:
0,01
-
0,1
-
1
-
10
kWh or kVArh
(for each emitted pulse the instrument will have counted 0,01 - 0,1 - 1 - 10 kWh o kVArh).
Press the
B
key to increase the value or
C
key to decrease the value and
A
to confirm.
Programming of the duration pulse (
SET TPL
) (only for vers. with digital output)
The message
TP
L
will appear together the value of the duration pulse expressed in mS. It’s possible to select the
value from 100 mS to 500 mS, with 100 ms steps by using
B
key (to increase the value) and
C
(to decrease the
value). Confirm the value pressing the
A
key.
This setting is used by all digital outputs.
