EMM-µD3h EMM-µD3h-p EMM-µD3h-485 instruction manual
IM380-U v3.1
pag. 6 / 12
Programming the transformation ratio of the external CT’s (
)
The progra
mming of the CT’s ratio is considered as the rate between the primary and the secondary (i.e.: with CT 1000/5,
we must set 200 as value). The setting will be done with the push-button on the front panel.
Some seconds after giving the auxiliary supply to the instrument (during the switching on, all LED and displays will flash
alternatively to the firmware indication), by pressing the
A
key, the display
C
will show the message
.
Then press
A
again to reach the programming menu and the
C
display will show the message
and the value of
the transformation ratio (set as 1 by the manufacturer) will appear at the third display. Press the
B
key to increase the
value or press simultaneously the
A
key to decrease the value (the variation is performed unit per unit). To speed up the
operation, keep on pressing the button
A
and
B
, and the variation will appear successively by tens and hundreds,
releasing and pressing the key again it will return to increase or decrease the value at unit per unit. Press the
A
key to
confirm, the instrument will pass to successive programming menu. Shouldn’t any key be pressed during a 10 seconds
interval of time, the instrument will exit automatically from programming without saving the set values.
Programming of the transformation ratio of the external voltage transformers
After the precedent programming phase, on
E
display will appear the inscription
(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.
Programming of the average time (
)
After the programming phase previously described, pressing another time the
A
key, on the
C
display will appear the
message
and the average time settable from 1 to 30 minutes.
To
increase
the
value
press
the
B
key.
To
decrease
it,
press
the
A
key
with
B
key
already
pressed.
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 insertion mode (
)
In
a
unbalance
three
phase
system
it’s
necessary
to
set
(unbalance)
while
in
a
balance
system
(only
one
CT
and
only
one
VT)
the
correct
set
is
(balance).
For
a
single
phase
insertion
it’s
necessary
to
set
.
Programming wiring connection mode (
)
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 outputs settings.
Programming of the synchronism type (
)
In this setting for the synchronization type, it’s possible to choose
to use the external frequency (on L1 phase) or
,
Hz to use the internal clock.
Programming the weight of the energy pulses (
) (only
for EMM-µD3h-p)
After the previously described programming step, and pressing the
A
key, the
C
display will show
message and
the weight value of each single pulse, settable between 4 values:
-
- -
.
For each emitted pulse, the instrument had counted 0,01 - 0,1 - 1 - 10 kWh , kVArh, kVAh according with what it has been
selected in the digital output configuration. Press the
B
key to modify the value in the cyclic mode. Confirm the
configuration by pressing the
A
key.
Programming the pulse duration (
) (only
for EMM-µD3h-p)
The message
will appear together with the pulse duration value, expressed in mS. It is possible to select the value
between 100 mS and 500 mS, in 100 mS steps. Press the
B
key to modify the value in the cyclic mode. Confirm the
configuration by pressing the
A
key.
Programming
of
the
address
for
the
communication
network
(
)
(only
for EMM-µD3h-485)
After the confirm with the
A
key of the previous value, the message
will appear on
C
display; to set the value
that will identify the instrument when it will be connected in a EIA485 communication network, proceed with the modality,
already described. The settable values are from 1 to 247. To confirm, press the
A
key.
Programming of the baud rate (
) (only
for EMM-µD3h-485)
The following setting is the baud rate. The message
on the first two parts of
C
display to indicate the
programming of the baud rate displayed on the third part (L3) of the
C
display. To modify the value set,
it’s necessary to
use the
B
key. The values settable are:
=> 19200 baud,
=>9600 baud,
=>4800 baud,
=>2400
baud. Press
A
to confirm the value displayed.
Programming of the serial parameters (only for EMM-µD3h-485)
The following message will appear on
C
display using the
B
key. To confirm press the
A
key.
8 data bit / 1 stop bit
No parity
8 data bit / 2 stop bit
No parity
8 data bit / 1 stop bit
Even parity
8 data bit / 1 stop bit
Odd parity
Programming of the Password (
)
The
instrument
is
supplied
without
password.
When
a
password
(from
0002
to
9999)
is
set,
using
the
B
(to
increase),
A-B
together
(to
decrease)
and
A
(to
confirm)
keys,
only
who
know
this
value
can
to
enter
in
the
setup.
The
password,
in
fact,
is
required
all
the
time
that
someone
try
to
enter
in
the
setup
(pressing
the
A
key
for
more
of
3
seconds).
If
the
password
is
wrong,
the
message
will
appear
on
C
display
and
the
instrument
go
back
to
the
measures
visualization.
To
input
the
password,
when
required
by
the
instrument,
at
the
enter
of
the
setup,
use
the
A
and
B
keys
as
the
same
way
done
previously.
