EMM-R4h EMM-
μ
4h
instruction manual
IM441-U v0.7
pag. 8
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 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 (
seT EN
)
This setting allows to define the energy visualization type after the visualization of the temperature.
With
TOT PAR
will have the visualization of the partial and total energy counters. With
NORMAL
there will be only the
visualization of total counters (that it’s possible to reset from
RESET
menu).
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 L3
.
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
L3
to use the external frequency (on L3 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.
Programming of the address for the communication network (
SET ID ADR
) (only for vers. with serial output)
After the confirm with the
A
key of the previous value, the message
ID aDR
will appear
on
F
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 (
SET BDR
) (only for vers. with serial output)
The following setting is the baud rate. The message
SET
appears
on
G
display, the message
SET BDR
on the first two
parts of
F
display to indicate the programming of the baud rate displayed on the third part (L3) of the
F
display. To modify
the value set, it’s necessary to use the
C
key to decrease and
B
to increase the rate. The values settable are:
-
19.2
=> 19200
baud -
9.60
=> 9600
baud -
4.80
=> 4800
baud
-
2.40
=> 2400
baud
Press
A
to confirm the value displayed.