Carlo Gavazzi WM3-96 User Manual

2

Index

CARLO GAVAZZI

WM3-96

32bit µ-Processor based power quality analyser with
modular housing for Plug and Play modules

FW rev. 12

Instruction manual: INDEX

TO BEGIN WITH................................................................ 5

■ The main programming parameters..........................5

■ Front panel description ............................................. 6

■ Display adjustment....................................................6

DISPLAYING OF THE VARIABLES................................... 7

■ Page “00”, starting page ...........................................7

■ How to scroll the display pages ................................ 8

■ How the F key changes function depending on the

display page.............................................................. 8

❏

Pages from “00” to “13”: displaying of the variables ...

❏ Pages from “14” to “18”: displaying of the MIN

and MAX values................................................. 8

❏ Pages from “19” to “24”: displaying of the

harmonic analysis ..............................................9

❏ Displaying of the Energy meters.......................10

❏ Page “25”: displaying of the total energy meters .........10

❏ Page “26”: displaying of the partial energies ....10

❏ Page “27”: displaying of the instrument’s configuration 11

❏ Displaying with access to the pass code .......... 11

❏ Pass “1000”: displaying of the recorded events 11

❏ Pass “999”: energy consumption storage......... 12

LET’S START

■ Main menu ..............................................................13

■ Changing the password ..........................................14

■ Electrical system .....................................................14

■ CT ratio .................................................................15

■ VT ratio ................................................................. 16

■ Display page ...........................................................16

.................................................................

▲

How to use the symbols

4

▲

4

13

8

Index

■ MIN MAX values .....................................................17

■ Selecting the events................................................18

■ Average values calculation ....................................19

ENERGY METERS MANAGEMENT................................ 22

■ Access to the management menu of the energy meters....

❏ Single tariff management..................................22

❏ Dual tariff Management: whole year.................22

❏ Programming of the holidays period................. 25

❏ Multi-tariff management of the energy meters .....

❏ Reset of the energy meters ..............................28

OUTPUTS / OTHER SETTINGS ...................................... 29

■ Displaying of the harmonics.................................... 29

■ Clock setting ........................................................... 30

■ Digital outputs .........................................................30

❏ Pulse output......................................................31

❏ Alarms...............................................................32

❏ Diagnostics .......................................................34

❏ Remote control .................................................34

■ Analogue outputs ....................................................35

■ Serial outputs ..........................................................36

■ Digital filter ..............................................................37

■ Language ................................................................37

USEFUL INFORMATION ..................................................38

■ What is ASY?.......................................................... 41

INSTALLATION ................................................................ 41

■ Preliminary operations ............................................43

■ Before mounting the modules .................................43

■ Overall dimensions and panel cutout...................... 45

■ Mounting .................................................................45

■ Position of the slots and relevant modules ............. 46

■ Available modules ...................................................46

❏ Analogue output modules .................................46

❏ Digital output modules ......................................48

❏ Other input/output modules ..............................48

❏ Power supply modules ..................................... 49

■ Connections of optional modules............................ 49

Displaying of the variables

2

4

▲

▲

3

22

27

7

4

ELECTRICAL DIAGRAMS............................................... 52

■ Electrical connection diagrams ...............................52

TECHNICAL FEATURES .................................................56

■ General features .....................................................56

■ Input specifications ................................................. 56

■ Over-load protection ............................................... 58

■ Key-pad .................................................................58

■ Output specifications...............................................58

■ Software functions .................................................. 61

■ Harmonic distortion analysis ...................................62

■ Energy Management...............................................63

■ Power supply specifications.................................... 64

■ General specifications.............................................64

Index

❏ V/mA single analogue outputs ..........................49

❏ V/mA dual analogue outputs.............................49

❏ Relay output ..................................................... 50

❏ Open collector output ....................................... 50

❏ Digital inputs .....................................................50

❏ RS485 serial output ..........................................51

❏ Three-phase connection, Balanced load ..........52

❏

4-wire three-phase connection, unbalanced load

❏ 3-wire, three-phase Aron connection ,..................

unbalanced load ................................................54

❏ Single-phase connection ..................................55

HOW TO USE THE SYMBOLS

Go to the page where the previous main
subject is described.

53

▲

Go to the page where the next main subject
is described.

Go to the page where the subject written
on the top of the current page starts.

▲

Front panel description

2

▲

6

To begin with

5

▲

■

Main programming parameters

• Programming of the password

• Selection of the electrical system

• Programming of the CT ratio (up to 30,000 A)

• Programming of the VT ratio (up to 600kV)

•

Selection of the variables for the MIN / MAX detection

• Programming of the calculation of the integration time period

• Tariff management

• Harmonic analysis enabling

• Clock adjustment (if present)

• Programming of the pulse output (if present)

• Programming of the serial and analogue outputs (if present)

• Programming of the digital filter.

Go to the page where the subject written
on the bottom of the current page starts.

This symbol indicates a particularly important
subject or information.

This symbol indicates that more details are
given on the current subject.

We suggest you to keep the original pack­ing in case it is necessary to return the
instrument to our Technical Service De­partment. In order to achieve the best results
with your instrument, we recommend you
to read this instruction manual carefully.

Index

2

Displaying of the harmonic analysis

6

▲

▲

9

6

■

Front panel description

To begin with

Exit from the menu and
cancel the choice you
have made.
It allows you to access
some functions relating
to the displayed
variables.

Scroll to the
previous page.

Access to programming
or settings’ confirmation.

Alphanumeric indication by means of a 7-segment
graphic LCD (128 x 64 dpi):

• of the programming parameters;

• of the measured variables;

• Total number of energy meters: 4 (9 digits);

partial number of energy meters: 48 (6 digits);

• time periods: 4 programmable within 24 hours

• Programmable seasons: 3 within 12 months

■

Display contrast adjustment

In order to get the best readability of the display, hold the keys

and pressed simultaneously, until the desired read-

ability is reached; the adjustment is cyclical.

The contrast can be adjusted only during the
measuring phase (from page 00 to page 27).

Scroll the display pages

5

▲

Scroll to the
next page.

8

▲

Displaying of the variables

■

Page “00”, Starting page

When the instrument is switched on, the main page of
variable displaying is shown. This first page, called page "00",
is the only one configurable by the user who can choose the
variables to be displayed in the 4 displaying areas. In all the
other pages (up to 27 depending on the instrument configura­tion), the type of variables displayed in the four displaying
areas is automatically selected and cannot be changed. In the
table on page 41 you can see the contents of all the pages that
can be displayed by WM3-96.

Measured variables

Clock

Number of the
displayed page

The bottom part of the display, where the status of the digital
outputs is indicated, is common to all the pages. If the outputs
are not present, only an empty black rectangular frame is
shown; if the outputs are present, the display will show a letter
followed by a number. Four different letters may appear:
"P" Indicates a pulse output.
"A" Indicates an alarm output. In this case the letter can be

white in a black background to indicate that the output is
in alarm, or black in a white background to indicate that the
output is not in alarm.

"D" Indicates a diagnostic output. This is a particular type of

alarm that is activated when the neutral wire connection is
missing. The alarm is active when the background is
black, while the alarm is not active when the background
is white.

"R"

Remote control is activated (see Remote Control on page

34).
The number that follows the letter is the progressive number
of the output (from 1 to 4).

7

To begin with

5

▲

12

Pass 999

12

▲

8

■

How to scroll the various pages

To scroll the various pages, use the and keys.

■

How the F key changes function depending on

Displaying of the variables

Pressing the key in any one of the display pages,
you access to the programming phase. The key,

on the contrary, has various functions depending on
the selected page.

the display page

❑

Pages from "00" to "13" (04 in single phase mode)

Displaying of the variables

key

enabled if the alarm latch function is activated,

access to the reset of the latch alarms.
To reset the latch alarm press the key; after that a
message will appear "WILL YOU RESET THE LATCH
ALARMS?": if you choose you will enable the reset
procedure, if you choose there won’t be any reset. The
reset of the latch alarm is only available if the alarm event

is finished.

❑

Pages from "14" to "18" (from 05 to 09 in single phase

mode). Displaying of the MIN and MAX values

The key is active, that means that you have access to the
reset function of the “MIN” and “MAX” values.
"MIN/MAX" recording, proceed as follows: enter the
function by pressing the key, after that a message will
appear: "WILL YOU RESET MIN/MAX VALUES, WILL
YOU CONTINUE?" If you choose there won’t be any
reset, if you choose the reset will not be made. The
(moves from left to right) and (moves from right to left)
keys allow you to select the value that you want to reset;
to confirm the reset press the key. To exit the function
press the key again.

To reset the

Index

310

▲

7

Energy meter pages

12

▲

Displaying of the variables

❑

Pages from "19" to "24" (10 to 11 in single phase mode)

Displaying of the harmonic analysis

When the instrument is supplied, these pages are not enabled, see
page 29 to enable them.The key is active, access to the detailed
analysis of the harmonics. After pressing the key, a pointer
appears along the horizontal axis (see figures below). To display the

data relating to the single harmonics move along the histogram using
the (moves from left to right) and (moves from right to left)

keys. For each harmonic the instrument measures the % value with
reference to the fundamental and the single harmonic angle between
the "V" harmonic and the "A" harmonic of the same order.

SIMPLE ANALYSIS:

Line phase being measured
(L1-L2-L3) and relevant
voltage or current value

Total harmonic distortion and
relevant value in percentage

DETAILED ANALYSIS:

Harmonic order (h1 to h50) of the
phase being measured (L1-L2­L3) and relevant absolute current
or voltage value of the harmonic.

9

T

he pointer
shows which
harmonic is
being measured

Phase angle between the voltage and current harmonic of the
same order: a phase angle between 0° and 90° and between
270° and 360° corresponds to a generated harmonic; an angle
between 90° and 180° and between 180° and 270° corre­sponds to an imported harmonic.

Page 00

713

Harmonic order (from h1 to h50),
relevant conventional sign (– or +)
and value of the harmonic given in
percentage.

Access to the main menu

12

▲

7

▲

10

❑

Pages relating to the energy meters

❑

Page "25" (12 in single phase mode)

Displaying of the variables

0°

Generated

Harmonics:

This angle is displayed only if the measurements
are taken in a three-phase system with neutral.

270°

Imported

90°

180°

Displaying of the total energy meters

key disabled.

❑

Page "26" (13 in single phase mode)
Displaying of partial energies

key is active; modification of tariff/displayed period.
By pressing the key for the first time, the range
relating to the season is highlighted. By using the and

keys, it's possible to change the season displayed in
that page. Pressing the key another time, the range
relating to the period is highlighted. Using the and

keys, it's possible to change the tariff period within the
displayed season. Pressing the key for the third time,
you go back to the measuring page. The changes of

season and tariff period only refer to the displaying of the
values stored in the corresponding season and period.

The changes carried out in this page do not have
any influence on the method of tariff management
of the instrument; they are only valid for display
purposes.

To begin with

5

712

▲

▲

Pass 999

12

Displaying of the variables

❑

Page “27” (14 in single phase mode)

11

Displaying of instrument configuration

key disabled. Page 27 shows the configuration of the main

input (IN) and output (OUT) modules.

Alarms
(A1-A2-A3-A4).

Diagnostics
(D1-D2-D3-D4).

Pulse outputs
(P1-P2-P3-P4).

Digital inputs.

The letters and numbers between parenthesis are referred to
the relevant slot, while the text on their right shows the variable
referred to the output. With reference to the digital inputs
(DIG.INP.), the ON/OFF status of each one of them is shown.

❑

Displaying with access to the Pass Code

❑

Pass "1000": displaying of recorded events

(Only if the RS232+RTC module is present)

Press the key: when the instrument asks you for the pass
code , set the value "1000"; if the RS232+RTC
module is present, the instrument shows you the page where
the events are displayed and where the instrument stores, in
a chronological order, the alarms that have occurred until that
moment. To go back to the variable page press the key.
The last event has always the number 1 while the number
corresponding to the first event varies, depending on the
number of events that have been previously stored. The figure
on the following page explains you the meaning of the dis­played information.

Harmonic analysis

915

▲

12

7

▲

CT ratio

12

Control type:
alarm (e.g. A2),
diagnostics (e.g. D1),
maximum value (MAX),
minimum value (MIN).

Date of the
event.

To reset all the events press the key, to continue the reset
procedure press the key: to exit from the reset procedure
press the key.

❑

Pass "999": energy consumption storage (Only if the

Displaying of the variables

Only for alarms and diag­nostics: detection of the
abnormal condition (ON)
or return to the normal con­dition (OFF).

Variable being
controlled.

Alarms: value of
the ON alarm;
Max and MIN log­ging: maximum

Time of the
event.

and minimum
measured values.

RS232+RTC module is present)

The RS232+RTC module allows also the storage of the energy
consumption of the previous two months. To enter this func-

tion, press the key: when the instrument asks for the pass
code , set the value "999": the instrument
shows you the page where all the information are stored.

Page 00

714

▲

7

▲

System

Let’s start

Use the and keys to show the partial values, to
exit press the key.

It is very important to verify that, every
time the configuration of the instrument
(modules and/or associated variables,
electrical systems, etc.) changes, the
setting of the parameters is according
to the new configuration.

■

Access to the main menu

Press the key to access to the
programming menus from the
measuring and displaying phase;
when the instrument asks for it, enter
the correct password value by means

of the and keys; then confirm
it pressing the key again. If the
password is correct (the default

password is 0) you are allowed to

1.2..
..2.1

access to the main menu of the
programming phase. To reset your
choice and go back to the measuring

mode, press .

13

MENU title

Scroll bar

Menu

Instrument revision

Pass 1000

11 17

Serial number

▲

21

Min/Max values

▲

14

Measure

Measure

Let’s start

■

This function allows you to choose
the desired password value (from 0
to 500).

Press the key and when the
new password value is required,
enter the desired value by means of

the and keys.
The instrument goes back to the

1.2..
..2.1

main menu, as shown on the figure
on the left. T o reset your choices and

go back to the main menu press .

■

This function allows the user to se­lect the type of electrical system by
choosing among single phase (1­phase), balanced three-phase plus
neutral (3+N phases bal.), unbal­anced three-phase plus neutral
(3+N phases unbal), three-phase
balanced (3 phases bal) and three­phase unbalanced (3 phases unbal).
Choose the SYSTEM function by

means of the and keys,
press to confirm; then select the
desired system by means of the
and keys and confirm with .

Changing the password

System

Harmonic analysis

916

▲

13

21

▲

VT ratio

Measure

Let’s start

To reset the choice and go back to
the main menu, press the key.

Changing the type of system, all the MIN/MAX
values, the events and the partial energy meters
are reset.

■

CT ratio

This function allows you to select the
value of the CT ratio. Example: if the
primary of the CT (current trans­former) being connected is 300A and
the secondary is 5A, the CT ratio
corresponds to 60 (obtained from the
calculation: 300/5). Choose the func-

tion CT RA TIO by means of the

1.2..
..2.1

and keys; press to confirm,
then select the desired value by

means of the and keys
and confirm with . To reset the
choice and go back to the main
menu, press .

15

Note that when the CT ratio is changed all the
MIN/MAX values, the events and the partial
energy meters are reset.

Energy meters

10 19

▲

Average power calculation

13

21

▲

16

Let’s start

■

VT ratio

This function allows the user to se­lect the multiplier value of the VT.
Example: if the primary of the VT
(voltage transformer) being con­nected is 20kV and the secondary
is 100V, the VT ratio will be 200
(given by 20000/100). If there is no
VT, the ratio will be “1.0”.

1.2..
..2.1

Changing the VT ratio, all the MIN/MAX values,
all events and partial energy meters are reset.

Choose the function VT RATIO by
means of and ; to confirm
press ; then select the desired
value by the and keys and
confirm with . To reset your

choice and go back to the main
menu, press .

■

Display page

This function allows you to select the
variables to be displayed on page

00. Choose the DISPLAY PAGE
function by means of the and

keys; press to confirm, then

select the desired section of the dis­play using the and keys;

Pass 1000

11

▲

13

21

Event selection

18

▲

Measure

Let’s start

Press ; select the variable to be
displayed by means of the and

keys and confirm it with .

To reset your choices and go back
to the main menu press .

■

MIN/MAX VALUES

This function allows the user to as­sociate some variables to the auto­matic recording of maximum values
(from MAX1 to MAX12) and mini­mum values (from MIN1 to MIN8).
To use this function, proceed as fol­lows: select the MIN MAX VALUES

function using the and keys
and confirm it with .
A new window will appear showing

you the list of available memory lo­cations: select the locations using

the and keys, starting from
MAX1 for the maximum values and
MIN1 for the minimum values. Press

to open the secondary menu
with the list of the available variables
to be selected.

17

CT ratio

15

▲

Average power calculation

21

13

▲

21

18

CT ratio

15

Let’s start

Scroll the list of the variables using
the and keys; once you

have selected the desired variable,
confirm it using . To reset your
choices and go back to the main

menu, press .

will appear: “YOUR CHOICE WILL
RESET THE V ARIABLE, WILL YOU
CONTINUE? YES/NO”. Note: to en­able the MIN/MAX recording func­tion, read carefully the following para­graph, SELECTING THE EVENTS.

■

This function allows the user to en­able the events for data logging:

• MAX (logging of up to 12 different
variables MAX1 to MAX12), see also:
MIN MAX VALUES;

• MIN (logging of up to 8 different
variables MIN1 to MIN8), see also
MIN MAX VALUES;

• D ”diagnostics” (logging of up to 4
alarms: from D1 to D4), see also:
DIAGNOSTIC DIGITAL OUTPUTS

• R “remote control” (up to 4 remotely
controllable outputs: from R1 to R4),
see also REMOTE CONTROL DIG­ITAL OUTPUTS;

• A "alarms" (logging of up to 4
alarms: from A1 to A4), see also:
ALARM DIGITAL OUTPUTS;

13

▲

Once you have con­firmed the selection,
the following message

Selecting the events

Synchronization

21

▲

20

1.2..
..2.

Let’s start

T o use this function, select “EVENTS
SELECT.” from the main menu us-

ing the and keys and con­firm it pressing . Use the and

keys to select where you want
to enable the event (ON) or disable

it (OFF). The function of the ON­OFF-ON key is cyclical. To go back

to the main menu press .

■

Average power calculation

This function allows to select the cal­culation method of the W-VA-cosϕ
average value.
T o enter these functions, select “AV-
ERAGE CALCULATION” from the

main menu by means of the and

keys and confirm the selection
pressing the key.
You can now choose the average

calculation method, that is you can
choose between FIXED and FLOAT

SELECTION using the and
keys. Confirm your choice using the

key.
gration time period; again, use the

sired value and confirm it with .
To reset your choices and go back

to the main menu, press .

Then, you can set the inte-

and keys to set the de-

19

Min / Max values

17

Energy Meters Management

13 21

▲

▲

23

20

FLOAT SELECTION: if, e.g., you set this value at 15 min­utes, the instrument at first calculates and updates the
average of the variable (W-VA-PF) after 15 minutes and then
every minute (fixed time).
See the diagram that shows the different operating methods
(FIXED and FLOAT) on the following page.

SYNCHRONIZATION OF THE FIXED OR FLOAT CALCU­LATION
The synchronization of the FIXED or FLOAT calculation can
be carried out in three different ways:

• without the DIGITAL INPUT and RS232 + RTC modules:
the reset and the beginning of the synchronization is carried
out as soon as the instrument is powered on;

• with the installed DIGITAL INPUT module:
the synchronization begins when the digital input modules
change state (from ON to OFF or from OFF to ON). Any
following change of state will make the synchronization reset
and start all over again;

• with the RS232+RTC module:
the synchronization begins at the exact hour that follows the
switch on of the instrument (E.g.: if the instrument is switched
on at 10:25, the synchronization begins at 11:00).

Let’s start

FIXED SELECTION: if, e.g., you set this value at
15 minutes, the instrument calculates and up­dates the average of the variables (W-VA-PF)
every 15 minutes.

CT ratio

15

In case both modules are installed (that is
digital inputs and RS232+RTC) the priority
will be given to the Digital Input modules.

Energy Meters Management

21

▲

13

▲

22

Let’s start

FIXED AVERAGE CALCULATION

Where: Pmax is the maximum measured power

Pc is the contractual power,
t1 is the selected average period

FLOAT A VERAGE CALCULATION

21

Average power calculation

19

▲

13

Holiday period

25

▲

22

TARIFF SELECTION

Energy Meters Management

■

Access to the Energy

Meters Management Menu

This function allows you to choose
the type of management of the en­ergy meters. Select “ENERGY ME­TERS” from the main menu by

means of the and keys;
confirm with to access the spe­cific secondary menu.

TARIFF SELECTION

When you change the type of management, and
after the choice is confirmed, the instrument re­sets the meters and a buzzer sounds.

❑

Dual tariff management of the meters: whole year

This selection manages the energy meters with two different
tariffs per day and two periods per year. Select DUAL TARIFF

from the energy meters menu by means of the and
keys and confirm with . Select WHOLE YEAR and confirm
with to enter the relevant menu; now you can enter the

programming of the daily period as follows:

1- press : the first box (trf=tariff) is highlighted;
2- press

part of the display; now you can choose the tariff (from 1 to 4,
e.g.: 1) by means of the

Min/Max values

17

again: the TARIFF box will appear on the lower

❑

Single tariff

This function sets the Energy meters
according to a single tariff which is
the same for the whole year.
Select SINGLE T ARIFF by means of

the and keys and confirm
your choice with .

and

Energy Meters Management

▲

28

keys;

▲

24

Energy Meters Management

3- press the key again; the “end-

tariff” hour is highlighted;
4- press the key again; the
HOURS box will appear on the lower
part of the display; now you can
choose the hours - e.g. 8 - by means
of the and keys.
5- press the key again; the “end
tariff” minutes will be highlighted;
6-press the key again: the MIN-
UTES box will appear on the lower
part of the display; now you can set
the minutes - e.g. 10 - by means of the
and and keys.
7-after the confirmation of the last set­ting, press and you are back to the
sel

ection of the first "trf" parameter

1.2..
..2.1

1.2..
..2.1

1.2..
..2.1

Proceed with the same
principle for the follow­ing rows. To exit any

item use always .

you have highlighted.
The “starting hour” of the following line
becomes equal to the “end hour” you
have just selected. Only when the “trf”
parameter is highlighted, you can scroll
the parameters and modify them:
use the key to access to the
parameter; use the key to move
from left to right and the key to
move from right to left.
8- Press to exit the programming
of the parameters of the relevant row
(no boxes are to be highlighted);
9- press and to select one
of the other programming lines; the
pointer on the right shows the line
where the user can modify the pa­rameters (points from 1 to 7).

23

Diagrams

21

▲

Reset of the energy meters

22

28

▲

28

24

Energy Meters Management

a) the day can be divided into up to 8

different periods connected to up to 4
different tariffs according to the following
working principle:

24

2

22

20

18

16

14

trf1

4

6

8

10

12

+kWh

-kWh
+ kvarh

- kvarh

1

Imported active energy
Exported active energy
Imported reactive energy
Exported reactive energy

The measured energy (partial energy) is placed in TARIFF
1 when the time period is from midnight to e.g. 8:00am, in
TARIFF 2 when the time period is from 8:00a.m. to 08:00p.m.
and again in TARIFF1 when the time period is from 08:00p.m.
to midnight. The total measured energy is the result of the
sum of all the partial measures as shown in the figure below:

1

2

+ kWh

- kWh
+ kvarh

- kvarh

T

trf1

+ kWh

trf1

- kWh
+ kvarh

- kvarh

+ kWh

- kWh
+ kvarh

- kvarh

24

2

22

20

18

16

14

4

6

8

10

12

trf2

b) the starting point of the first time period is always 24:00
(midnight) and cannot be changed;
c) the starting point of the following period is always the end
hour of the previous time period;
d) the daily loop is closed by setting 24:00 as last hour of
the last time period (to follow this procedure see point 4 on

the previous page), confirm the setting by pressing and

to go back to the TARIFF SELECTION menu.

Average power calculation

19

22 28

▲

Trf holiday period

▲

26

Energy Meters Management

❑

PROGRAMMING THE

HOLIDAY PERIOD

To program the HOLIDAY period,
proceed in the following way.
10- Choose HOLIDAY in the SEA­SON menu by means of the

and keys and confirm with :
the HOLIDAY menu will be displayed
(see figure on the left);

11-press : the month correspond­ing to the start date will be highlighted;

12-press : the box for setting the
month will be enabled;

1.2..
..2.1

1.2..
..2.1

1.2..
..2.1

1.2..
..2.1

On page 26

To reset, press

.

13-use and to select the
desired month (from 1 to 12);

14-press the key to confirm the
selection and move to the next pa­rameter: day setting;
15-press the key again to open
the box where the day is to be set;

16-use the and keys to
select the desired day (from 1 to 31
depending on the previously selected
month);

17-press the key to confirm the
selection and move to the next pa­rameter.

25

Dual tariff management

23

▲

21 28

Display of harmonics

▲

29

26

To program the “end date” follow the same procedure de­scribed above from No. 11 to No. 16. After confirming the “end”

day by means of the key, the HOLIDAY box is highlighted
to indicate the conclusion of the HOLIDAY period program-

ming cycle. You can also use the (moves from right to left)
and (moves from left to right) keys to scroll along the

available parameters.

pag.

25

1.2..
..2.1

Energy Meters Management

It’s possible to choose the tariff to be
associated to the HOLIDAY period

From page 25

according to the following procedure:
starting from the box on the previous

page, number 10, press the key
again: the instrument will display the

box shown on the left. Press : the
box of the “trf” value is highlighted;
press the key again: the instru­ment will display on the lower section
the box where the tariff is to be set.
Select the desired tariff (from 1 to 4)

by means of the and keys
and confirm it with . To reset your

choices and/or exit the menus, use
the key.

Diagrams

21

▲

22

28

Meters reset

28

▲

Energy Meters Management

❑

MULTI TARIFF

This function allows the management of the meters according
to many periods per day and three periods per year: WINTER,
SUMMER and HOLIDAY.

To program the parameters relating
to the winter season, simply follow
the same procedure (holidays) de­scribed on page 25 from No. 11 to
No. 17. The parameters of the SUM­MER season are automatically set
by the instrument as a difference
between the previous two periods of
the Year.
To enable the setting of the daily

time periods, press when the
WINTER or SUMMER seasons are
highlighted. The following settings
are the same as the ones described
from No. 1 to No. 9 on page 22 and

23. To reset your choices and/or go
back to the previous menus, use the

key. To program the HOLIDAY
period, follow the procedure on page
25 from No. 11 to No. 17.

The periods WINTER and SUMMER are con­ventional seasons mainly used to manage in
the best way the different energy costs during
the year. The reminds from letter a) to d) are
also valid for the MULTI TARIFF function.The
next page shows a few examples of program­ming the various time periods.

27

Holiday period

25

▲

22

28

Pulse output

31

▲

28

WHOLE YEAR

Energy Meters Management

DUAL T ARIFF management

trf1

24

2

22

20

18

16

14

trf1

trf

1 OO:OO
2 O8:OO
1 2O:OO

TARIFF

WHOLE YEAR
start

O8:OO
2O:OO
OO:OO

end

1

4

6

8

10

12

trf2

As you can see on the figure above, there is a daily division
into three periods with two different tariffs.

MULTI TARIFF management

WINTER

trf1

22

trf4

20

18

trf3

16

14

trf2 trf3

trf

1

trf1

24

2

10

12

2 O6:OO
3 O8:OO

4

TARIFF

6

trf

trf2

8

2
3 16:OO
4 18:OO
1 21:OO

TARIFF

start

OO:OO

start

1O:OO

WINTER

end
O6:OO
O8:OO
1O:OO

end
16:OO
18:OO
21:OO
OO:OO

1

2

On the picture above you can see four different tariffs which
are coupled to seven different periods of the day.

❑

Reset of the Energy meter

The “RESET” menu allows you to
reset the energy meters. Press
to enter the menu, then use and

to select the type of reset you

prefer. Confirm the selection by
means of the key: the instru­ment displays the following message:

PAY ATTENTION, ALL THE ME­TERS WILL BE RESET!! WILL YOU
CONTINUE?

Dual tariff

23

▲

22

Digital outputs

▲

30

Outputs / Other settings

To conclude the RESET procedure, press ; to go back to
the TARIFF SELECTION menu, press .

The reset procedure allows the user to choose
among the following different choices:
ALL: reset of all the energy meters (imported/
exported energies);
TOTAL + : reset of the imported energy me-

TOTAL - : reset of the exported energy meters (-kWh, -kvarh);
PARTIAL + : reset of the partial imported energy meters
(+kWh, +kvarh);
PARTIAL - : reset of the partial exported energy meters
(-kWh, -kvarh).

ters (+kWh, +kvarh);

■

HARMONIC ANALYSIS

This function enables the display of
the windows relating to the harmonic
analysis.

Press to enter the menu; then,
use the and keys to select

the phase where you want to enable
the harmonic analysis. The key
allows the user to enable (ON) or

disable (OFF) the displaying (the
function is cyclical: ON-OFF-ON).
To go back to the main menu, press

.

29

Multi tariff

27

▲

Alarm parameters

37

▲

33

30

Outputs / Other settings

■

Clock setting

This function enables the user to set
the data relating to date and time.
Select CLOCK from the main menu

by means of the and keys;
then press to enter the menu.
Choose the desired function by means
of the and keys; Enter the
desired secondary menu with .
Then set the desired value by means
of the and keys and confirm
the value with . To reset the
choices and go back to the main

menu, press .

The EURO/USA function allows the user to display
the date and time according to the EUROPEAN
(EURO, date: day/month/year; time: 24 hours) or
AMERICAN (USA, date: month/day/year; time: 12
hours / AM and PM) format.

■

Digital outputs

This function enables the user to
connect the type of digital output to
the slot at the beginning. The instru­ment indicates if the module is not in
the slot with the message “NOT
AVAILABLE”; whereas if the module
is in the slot, the instrument auto­matically goes to the digital output
menu, where the user can set four
different types of output:

PULSE OUTPUT, ALARM OUTPUT,

Holiday period

25

▲

29

37

▲

Alarms

32

Outputs / Other settings

DIAGNOSTIC OUTPUT, REMOTE
CONTROL OUTPUT. To enter these
functions, choose DIGITAL OUTPUT

from the main menu using the and

keys, then confirm with . The

instrument shows a window where the

and output channels (1, 2, etc.) are shown.
slot using the and keys and confirm with to enter
the output function menu
instrument displays NOT AVAILABLE). To reset the choices and
go back to the main menu, press

The meaning of the symbols on the display is the
following:
OUT C0 (1): digital output, SLOT C0, channel 1
OUT C1 (2): digital output, SLOT C1, channel 2
OUT D0 (3): digital output, SLOT D0, channel 3
OUT D1 (4): digital output, SLOT D1, channel 4

1.2..
..2.1

Display of harmonics

29

various slots (OUT C0, OUT C1, etc.)

(if the module is not in the slot, the

.

❑

Pulse output

This function allows the user to set
the parameters of the pulse output.
The output can be connected to a
specific energy and this energy can
be connected to the desired tariff.
The measured energy is re-trans­mitted by means of the pulse output
(the pulses/energy ratio of which is

programmable). Use and to
select PULSES from the list of avail-

able outputs; then confirm with
and choose from the submenu
ENERGY TYPE the energy that you
want to be retransmitted, using

and :

29

▲

37

Select the desired

Analogue outputs

▲

31

35

32

Outputs / Other settings

consumed active energy (kWh +),
generated active energy (kWh -),
consumed reactive energy (kvarh +),
generated reactive energy (kvarh -),

press the “ ” key to open the menu
of energy/pulse output management.
There are five possible selections:
TOTAL, output connected to the total
energy meter; TARIFF, output con­nected to the desired tariff type.

Confirm with and go back to the
digital output menu. To reset the
choices and go back to the main menu,

press .

The multiplyer of the measuring unit (kW,MW)
automatically changes according to the CT or VT
ratio set by the user.

❑

Alarms

This function allows the activation of
a static or relay output when an alarm
condition is detected. Select ALARM
from the DIGITAL OUTPUT menu

by means of the and keys,
then press to enter the display
window of all the alarm parameters:

Select the desired variable by means of the and
keys, press to confirm and enter the submenus dedicated
to the various parameters:

•VARIABLE: variables to be connected to the alarm: you can

▲

Diagnostic

34

Multi-tariff

27

29 37

▲

Outputs / Other settings

choose among all the available ones (see on page

43); scroll the variables by means of the and
keys and confirm the selection with . The avail­ability (or non-availability) of the variable is clearly

indicated on the display.

•TYPE: type of alarm: up alarm (UP); down alarm (DOWN); up
alarm with latch (UP L): in this case the reset of the
output can only be manual; down alarm with latch
(D.L.): in this case the reset of the output can only be
manual; down alarm with disabling at power ON
(D.DO). Choose the desired alarm type by means of

the and keys and confirm it with .

•SET ON: ON-alarm set-point. Select the value of the variable
by means of the and keys and confirm it with

.

•SET OFF: OFF-alarm set-point. Select the value of the
variable by means of the and keys and
confirm it with .

•OUT: normally energized alarm (NE) or normally de-ener­gized alarm (ND). Choose the desired function by

means of the and keys and confirm it with

.

•DELAY: delay on alarm activation. Select the desired delay
value in seconds by means of the and keys
and confirm it with .

33

Only in case of controls of the power variables,
it’s necessary to select the resolution (position of
the decimal point) of the alarm set-point’s value.

Pulse output

31

29 37

▲

▲

Language

37

34

Outputs / Other settings

❑

Diagnostic

In a 3-phase unbalanced-load sys­tem, this function controls the
presence of the neutral connection.
If the connection to the neutral is not
detected, the instrument activates
an alarm. Select “DIAGNOSTIC” by

means of the and keys, then
press to confirm it. To reset your

choice and go back to the main menu,
press .

❑

Remote control

This function enables the control of
the digital outputs by means of the
RS485/RS232 communication port
instead of using the instrument’s
alarm. The outputs can be activated
by a PC or PLC by sending special
commands. Select the REMOTE
CONTR. function by means of the

and keys and confirm press-

ing the key: the instrument will
go back to the digital output menu.
To reset your choice and go back to

the main menu, press .

Display of harmonics

29

▲

29 37

Serial output

▲

36

Outputs / Other settings

■

Analogue outputs

Select ANALOG OUTPUTS from the
main menu by means of the and

keys; confirm it with to enter

the various parameters:
OUT A0: Analogue output, SLOT

A0, channel 1;
OUT A1: Analogue output, SLOT
A1, channel 2;
OUT B0: Analogue output, SLOT
B0, channel 3;
OUT B1: Analogue output, SLOT
B1, channel 4.
Select the desired parameter by

means of the and keys and
confirm with to enter the rel-

evant submenus:

•VARIA: variable to be connected to the output; choose among

the available ones (see on page 43) by means of the
and keys and confirm the selection with .

availability (or non-availability) of the variable is clearly
indicated on the display.

•MIN O: value expressed as % of the “zero” of the output range

(0-20mA, 0-10V, etc.) that is generaged by the minimum
measured value (Min In). Select the desired value by

means of the and keys and confirm it with .

•MAX O: value expressed as % of the full scale of the output range

(0-20mA, 0-10V, etc.) that is generated by the measured
value (Max In). Select the desired value by means of the

and keys, and confirm it with .

35

The

Alarm parameters

33

29 37

▲

▲

Useful info

39

36

•MIN IN: minimum value of the variable input range. Select the

•MAX IN: maximum value of the variable input range. Select the

Outputs / Other settings

desired value by means of the and keys and
confirm it with .

desired value by means of the and keys and
confirm it with . To exit from any of the menus, press

. For further information, see examples No. 1 and 2 on
page 38/39. For the resolution of the value to be
retransmitted, see the note on page 33.

Every time a new selection of the variable con­nected to the analogue output is made, it is
important to check and if necessary program
again all the relevant parameters.

■

Serial output

This function allows the user to set
the parameters of the serial output.
Select SERIAL OUTPUT from the

main menu by means of the and

keys and confirm it with .
Select the function you want to set
from one of the submenus by means

of the and keys and confirm
it with . The configurable param-

eters are the following:

• Instrument ADDRESS: from 1 to 255.

•BAUD RATE: 1200, 2400, 4800

and 9600 bit/s.

• PARITY: no parity, even parity and
odd parity. To exit from one of the
menus or cancel a selection, press

1.2..
..2.1

.

Pulse outputs

31

▲

29

Useful information

37

▲

38

Outputs / Other settings

■

Digital filter

Select FILTER by means of and

and confirm with . Select the
function to be set from one of the

submenus by means of the and

keys and confirm it with .
You can choose among the follow­ing 3 selections:

• DISPLAY: to select the display of
the measurements of the instanta­neous variables at 4-digit (max 9999)
or 3 1/2-digit (max 1999)

• RANGE, to set the operating range
of the digital filter. The value is ex­pressed as % of the full scale value.

• COEFFICIENT, to set the filtering

urements. Increasing the value, also the stability and the
settling time of the measurements are increased. Once one of
the three parameters has been selected, set the desired value

by means of the and keys and confirm it with . To
exit the “FILTER” menu, press . For any other info, see

“Useful info, Ex. 2 on page 40).

coefficient of the instantaneous meas-

■

Language

Select LANGUAGE from the main
menu by means of the and
keys and confirm with . Select

the language to be set from the
submenu with the and keys
and confirm the selection with .

To exit from any of the menus or
cancel a selection, press .

37

Analogue outputs

35

▲

29

▲

What’s ASY

41

38

right polarities, measuring and retransmission errors
may occur, both due to the wrong direction of the current
flowing in the primary/secondary of the ammeter trans­former being connected.

It is however possible to measure and retransmit currents/
powers according to the direction of their flow using correctly
the parameters "MIn U./Max U." and "Min IN/Max IN".

Example 1: it’s necessary to measure a consumed active
power up to 100kW considering that it may either be con­sumed or generated by the system and retransmitted with a 4
to 20mA signal; the module to be used is AO1026 (2x from 0
to 20 mA) or AO1050 (1x from "MIn U./Max U." and "Min IN/
Max IN".0 to 20 mA) that is to be set as follows:

• VARIA.: WΣ (active system power)

• MIN U.: 20,0% corresponds to 4mA, the calculation formula

is: (100* min. output)/ fullscale output = 100*4mA/20mA=
20%

• MAX U.: 100,0% corresponds to 20mA, the calculation
formula is: (100* max. output)/ fullscale output= 100*20mA/
20mA=100%

• MIN IN: 0,0 K;the K,M and G multipliers are automatically
selected by the instrument depending on the selected VT
and CT value;

• MAX IN: 100,0 K; the K,M and G multipliers are automatically

Useful information

The variables measured by the instrument are
correct if the inputs have been connected ac­cording to the right polarities (see figure below).
Should the connection not be conforming to the

Alarm parameters Example 4

33

▲

43

▲

40

Useful information

selected by the instrument depending on the selected VT
and CT value;

Example 2: it’s necessary to measure both the consumed
active power and the generated active power up to 100kW and
retransmit it with a signal from –10 to 10V; the module to be
used is AO1033 (2x ±10VCC) or AO1057 (1x ±10VCC). The
parameters may be set as follows:

• VARIA.: WΣ (active system power)

• MIN U.: 0,0% corresponds to -10V; the calculation formula

is: (100* min. output) / fullscale output = 100*0V / 20V = 0%;
in this case the whole range of the analogue output is to be
considered for the calculation, therefore -10 +10 = 20V.

• MAX U.: 100,0% corresponds to 10V, the calculation to be
carried out is: (100*maximum output)/fullscale
output=100*20V/20V=100%

• MIN IN: -100K; K,M and G multipliers are automatically
selected by the instrument depending on the selected VT
and CT value;

• MAX IN: 100,0 K; the K,M and G multipliers are automatically
selected by the instrument depending on the selected VT
and CT value; Therefore, when the power is equal to

-100kW, the output will be -10V, when the power is 0, the
output will be 0V and when the power is 100kW, the output
will be +10V.

Example 3: it’s necessary to retransmit the whole range of the
values admitted for the PF with a signal from 0 to 20mA. Pay
attention to the fact that the variable PF can correspond to the
values included between C 0,00 and L 0,00 (for each phase);
once these values are retransmitted, they will change into 0
and 20mA. When the PF will correspond to a value equal to 1
being at the centre between C0,00 and L0,00, the output value
will correspond to the centre of its scale, that is 10mA. As a
consequence, the instrument is to be set as follows:

• VARIA: PF L1 (or L2 or L3);

39

Language

37

▲

38

43

▲

Installation

43

40

• MIN U.: 0,0%

• MAX U.: 100%

• MIN IN: C 0,000; the values entered with a negative sign

correspond to C, those entered with a positive sign corre­spond to L;

• MAX IN: L 0,001; the values entered with a negative sign

correspond to C, those entered with a positive sign corre­spond to L; we have chosen to limit “0,001” as minimum
value to be set for L , in order to avoid any undesired
oscillation of the outputs.

Example 4: it’s necessary to stabilize the value of the dis-
played variable “VL1-N”, that varies from 222.0V and 224.0V,
continuing to have an indication of 4 digits. The parameters of
the digital filter must be set as follows:

• DISPLAY: 4 digits

• RANGE: the variable may have variations within the average

amplitude value equal to ±0.4% of the full scale of the
variable (±0.4/100*250V= ±1V). The parameter “range” that
is the action range of the digital filter, will be set at a value
which is slightly higher than the percentage amplitude of the
fluctuation: e.g.: 0.5%.

• COEFFICIENT: if the new value acquired by the instrument

is within the action range of the filter, the new displayed value
is calculated by summing (algebraically) to the previous
value the variation divided by the filtering coefficient. As a
consequence, a higher value of this coefficient results in a
higher settling time, that means a higher stability. The best
result is generally obtained by setting the filtering coefficient
at a value equal to at least 10 times the value of the range
parameter. In the example: 0,5*10=5. To enhance the stabil­ity, you may also increase the filtering coefficient (values
within 1 and 255 only).

Useful information

Analogue outputs

35

▲

38

43

List of variables

▲

42

Useful information

■

What is ASY

The ASY variable allows to control the symmetry of the star /
delta voltages (for systems without neutrals) and star voltages
(for systems with neutral). The variable is calculated as fol­lows:

where the first formula is to be applied with delta systems,
while the minimum value calculated between the two is to be
used for the star systems.

It’s very important, as a general rule, to plug in
and extract the optional modules only when the
instrument is switched off.

LIST OF THE DISPLAYED VARIABLE PAGES

N ∞ 1st variable 2nd variable 3rd variable 4th variable

00 selectable selectable selectable selectable
01 VL1 VL2 VL3 VL-N ∑
02 VL1-2 VL2-3 VL3-1 VL-L ∑
03 AL1 AL2 AL3 An
04 WL1 WL2 WL3 W ∑
05 var L1 var L2 var L3 var ∑
06 VA L1 VA L2 VA L3 VA ∑
07 PF L1 PF L2 PF L3 PF ∑

41

Example 2

39

▲

38

43

Mounting

45

▲

42

Useful information

The configuration shown in the tables above is
only valid for connections to 3-phase systems with
neutral. In case of any other system, the type and
quantity of the displayed variables will vary.

Analogue outputs

37

38 43

▲

Removal of the modules

▲

44

Useful information

43

List of the available variables:

V1LnA3LAVDHTll2V3ADHT

2LV1LWAV ∑ DHT
3LV2LW1LFP3VDHTDHT

N-LV ∑ 3LW2LFPDHT

2-1LVW∑ 3LFPDHT
3-2LV1LravFP ∑ 1ADHTgvaFP
1-3LV2LravzHDHT

V ∑ 3Lrav1VDHTDHT

1LArav ∑ DHT
2LA1LAVDHT
3LA2LAV2VDHTDHT

1V2ADHT

ll

1VDHTll2A

l

2VDHTII3A

I

3VdmdnA

ll

3VdmdAV

l

1AdmdW

ll

1AYSA

l

2A

l

3A

I

The availability of the variables depends on the
type of electrical system being selected.

■

INSTALLATION

❑

Preliminary operations

Before switching the instrument on, make sure that the power
supply voltage corresponds to what is shown on the side label
of the relevant module. Example:

AP1020, Universal power supply

input range: 100V...240V DC/AC (50Hz -60Hz)
power consumption: 12W / 30VA 1 PHASE
serial number: S/N 002700/20345

❑

Before mounting the modules

Each module (input, output and power supply) must be
mounted in the proper slot: each module has been conceived
to be mounted in one slot only. To know in which slot every
module is to be mounted, refer to the figure on page 45.

What is ASY?

41

▲

38

Position of the modules

47

▲

44

For a correct mounting of the instrument, insert the modules
in the relevant slots, then, at the end, enter the central
module, which can be a blind type module or an
RS232communication module. The central module will help
fixing also the other modules in the relevant slots. To remove
the modules use a screwdriver as shown in the picture below:

Installation

Gently depress the
two fixing tabs.
Direction 1-4.

1

Extract the
central module

3

Take out the other modules.

Any other slots that you
haven’t used must be filled
with the relevant blind plug
modules supplied with the

instrument.

Example 2

39

▲

Remove the central
module from its slot:
press your thumb to-

2

wards points 2-5.

Position of the modules

51

▲

46

Installation

❑

Overall dimensions and panel cut-out

❑

Mounting

Insert the instrument (holding
its front) and fasten it (from the
back) by fixing the two lateral
brackets (1) (supplied with the
instrument) to the appropriate
location (2), using the two
screws (3) supplied with the
instrument.

1

45

2

3

Installation

43

▲

44

Power supply modules

51

▲

49

46

■

Position of the slots and relevant modules

Installation

A B C D

PU

PS IM

■

Available modules

❑

Analogue output modules

AO1050 (20mADC)
AO1051 (10VDC)
AO1052 (±5mADC)
AO1053 (±10mADC)
AO1054 (±20mADC)
AO1055 (±1VDC)
AO1056 (±5VDC)

Single output

AO1057 (±10VDC)

What is ASY?

41

▲

44

51

Other modules

▲

48

Installation

NOITPIRCSED A B C D UP SP MI

tuptuogolanaelgniS

✔✔

tuptuogolanalauD

✔✔

47

tuptuo

tuptuo

stupnilatigiD

ylppusrewoP

stupnI

Dual output

tuptuolaires584SR

tuptuolaires232SR

tuptuoyalerelgniS

tuptuoyalerlauD

rotcellocnepoelgniS

rotcellocnepolauD

stuptuorotcellocnepo4

AO1026 (20mADC)
AO1027 (10VDC)
AO1028 (±5mADC)
AO1029 (±10mADC)
AO1030 (±20mADC)
AO1031 (±1VDC)
AO1032 (±5VDC)
AO1033 (±10VDC)

✔

✔

✔✔

✔✔

✔✔

✔✔

✔

✔

✔

✔

Mounting

45

▲

44

Serial connections

51

▲

51

48

❑

Digital output modules

Installation

AO1058

Single relay

output

❑

Other input/output modules

AO1037

4 open

collector

outputs

Installation

43

AO1035

Dual relay

output

AR1039

RS232 + RTC

44

▲

AQ1038

3 digital

inputs

output

AO1059

Single open

collector

output

Digital input connections

51

▲

AO1036

Dual open

collector

output

AR1034

RS485

Serial

output

50

❑

Power supply modules

Installation

49

AP1020

90 - 260 VAC/DC

power supply

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Connection of optional modules

❑

mA/V single analogue outputs

❑

mA/V dual analogue outputs

Modules

47

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Three-phase connections

44

AP1021

18 - 60 VAC/DC

power supply

51

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54

50

❑

Single and double relay outputs

❑

Open collector outputs

❑

Digital inputs

Installation

This diagram is valid
also for the open collec­tor modules with a lower
number of outputs. The
value of the load
resistances (Rc) must
be chosen so that the
short-circuit current is
lower than 100mA; the
VDC voltage must be
lower than or equal to
30VDC.

Mounting

45

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Three- phase connection

44

51

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52

Installation

❑

RS485 Serial outputs

4-wire connection. Additional devices provided with RS485
(that is RS 1, 2,3 ...N) are connected in parallel.

2-wire connection. Additional devices provided with RS485
(that is RS 1,2,3,...N) are connected in parallel.

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The termination of the serial output is carried out
only on the last instrument of the network, by means
of a jumper between (Rx+) and (T).

Power supply modules

49

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Single-phase connection

44

51

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55

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Electrical connection diagrams

❑

Three-phase connections, Balanced load

Electrical diagrams

Direct connection

(3-wire system)

CT and VT connection

(3-wire system)

Modules

47

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CT connection

(3-wire system)

Direct connection

(4-wire connection)

3/4-wire three phase

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54

Electrical diagrams

❑

Three phase, Balanced load

53

CT connections
(4-wire system)

❑

Three-phase, 4 wires

Direct connection

(4-wire system)

Serial connection

51

CT and VT connections

- Unbalanced load

52

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55

(4-wire system)

CT connection

(4-wire system)

Additional errors

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57

54

❑

3/4-wire three-phase connections, Unbalanced load

Electrical diagrams

CT and VT connection

(4-wire system)

❑

3-phase / 3-wires ARON connection

Unbalanced load

CT connection

(3-wire system)

Power supply modules

49

52 55

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CT and VT connection

CT and VT connection

Technical characteristics

(3-wire system)

(3-wire system)

56

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Electrical diagrams

❑

3-phase / 3-wires conn.

❑

Single-phase conn.

55

3 CT and 3 VT connection

(3-wire system)

❑

Single-phase connection

CT connection

Three-phase connections

53

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52

Direct connection

CT and VT connections

Serial output

59

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56

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General features

• Modular housing for Plug and Play modules

• IP65 protection degree

• 32-bit µ-processor based indicator and controller

• TRMS measurements

• Back-lighted graphic LCD display (128 x 64 dots)

• 4 x 4 dgt read-out (instantaneous variables)

• 4 x 9 dgt read-out (total energies), 4 x 6 dgt (partial energies)

• 4 independent total energy meters (Wh, varh)

• Up to 48 independent partial energy meters (Wh,varh)

• Harmonic analysis up to the 50th harmonic with histogram

indication

• Up to 8 simultaneous outputs: pulses, alarm, analogue

output and serial communication port

• According to: EN61010-1(safety);

accuracy: EN60688-1, EN61036, EN61268.

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Input specifications

NUMBER OF INPUTS:

• Current: 6

• Voltage: 4

•

Digital: 3 free of voltage contacts for synchronization of W-VA­A measurements. Reading/voltage: <8mA/ 17.5V to 25VDC

ACCURACY (display, RS485, RS232)
Vn: 240VL-N, Uf.s. 300VL-N; In: 5A, max 6A

• Current: ±0.5% rdg (0.2 to 1.2 In) ±5mA (0.02 to 0.2 In)

• Neutral current:

• Voltage: Range AV5: ±0.5% rdg (48 to 300 VL-N)

Range AV7: ±0.5% rdg (80 to 480 VL-N)
Included frequency, power supply and output load influ­ences.

• Frequency: ±0.1% rdg (40 to 440 Hz).

•

Active power (@25°C ±5°C, R.H. ≤60% non-condensing):
±0.5% (rdg + f.s.) (
or ±1% rdg (

Technical features

±1% rdg (0.2 to 1.2 In) @40 to 100H

cosϕ 0.5 L/C,

cosϕ 0.5 L/C,

0.1 to 1.2 In, range AV5)

0.1 to 1.2 In, range AV5).

Z

Serial connection

51

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Output specifications

64

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58

Technical features

•

Reactive power (@25°C ±5°C, R.H. ≤60% non-condensing):
±0.5% (rdg + f.s.) (cosϕ 0.5 L/C, 0.1 to 1.2 In, range AV5) or
±1% rdg (cosϕ 0.5 L/C, 0.1 to 1.2 In, range AV5).

• Apparent power (@25°C ±5°C, R.H. ≤60% non-condensing):
±0.5% (rdg + f.s.) (0.1 to 1.2 In, range AV5) or
±1% rdg (0.1 to 1.2 In, range AV5).

• Energies (@25°C ±5°C, R.H. ≤60% non-condensing):
class 1 according to EN61036 and EN61268. Ib: 5A,
Imax: 6A, 0.1 Ib: 500mA; start up current: 20mA; Un: 240V
(AV5), 400V (AV7).

• Harmonic distortion (@25°C ±5°C, R.H. ≤60% non-con-
densing):
1% f.s. (f.s.:100%); phase: ±2°; Imin: 0.1Arms; Imax: 15Ap;
Vmin: 50Vrms; Cmax: 500Vp; sampling frequency 6400Hz
@ 50Hz

ADDITIONAL ERRORS:

• Humidity: ≤0.3% rdg, 60% to 90% R.H.

• Magnetic field: ≤0.5% rdg, @ 400 A/m.

• Input frequency: ≤0.4% rdg, 62 to 400 H Z.

TEMPERATURE DRIFT: ≤200ppm/°C
SAMPLING RATE: 6400Hz @ 50Hz
DISPLAY:
Graphic, back-lighted LCD, 128x64 dots.
Selectable read-out for the instantaneous variables: 4 x 4 dgts
or 4 x 31/2 dgts.
Total energies: 4 x 9 dgts; Partial energies: 4 x 6 dgts
MAX. AND MIN. INDICATION:
Max. 9.999 (999.999.999), Min. -9.999 (-999.999.999)
MEASUREMENTS:
Current, voltage, power, energy, harmonic distortion (see list
of the displayed pages/variables). TRMS measurement of a
distorted sine wave voltage/current;
Connection type: direct
Crest factor: ≤ 3 max. 15Ap/500Vp (VL-N) or 15Ap/800Vp (VL-N)

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Single-phase connection

55

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Software functions

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58

RANGE (IMPEDANCE):

• AV5:
58V/100V (>500kΩ) - 1ADC (≤0.3VA)
58V/100V (>500kΩ) - 5ADC (≤0.3VA)
240V/415V (>500kΩ) - 1ADC (≤0.3VA)
240V/415V (>500kΩ) - 5ADC (≤0.3VA)

• AV7:
100/170V (>500kΩ) - 1ADC (0.3VA)
110/170V (>500kΩ) - 5ADC (0.3VA)
400/690V (>500kΩ) - 1ADC (0.3VA)
400/690V (>500kΩ) - 5ADC (0.3VA)

FREQUENCY RANGE: 40 to 440 Hz

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Overload protection

• Continuous: voltage/current
AV5: 300VLN/520VLL/6A;
AV7: 480VLN/830VLL/6A

• For 1s: voltage/current
AV5: 600VLN/1040VLL/120A;
AV7: 960VLN/1660VLL/120A

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Keypad

Four keys: to enter the programming phase and confirm
the password, “UP” and “DOWN” to program the
values / select the functions and scroll the pages, for

special functions.

Technical features

■

Output specifications

ANALOGUE OUTPUTS (on request):

• Number of outputs: up to 4 (on request)

• Accuracy: ±0.2% f.s.; (@ 25°C ±5°C, R.H. ≤60% non-

condensing)

• Range: 0 to 20mADC, 0 to ±20mADC,

Three-phase connections

53

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56

64

Digital outputs

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60

Technical features

0 to ±10mADC, 0 to ±5mADC, 0 to 10VDC,
0 to ±10VDC, 0 to ±5VDC, 0 to ±1VDC.

• Scaling factor: programmable within the whole range of
retransmission; it allows the retransmission management of
all values from:
0 to 20mADC, 0 to ±20mADC, 0 to ±10mADC,
0 to ±5mADC, 0 to 10VDC, 0 to ±10VDC,
0 to ±5VDC, 0 to ±1VDC

• Response time: ≤200ms typical (filter excluded, FFT ex-
cluded, 31/2 dgt indication)

• Ripple: ≤1% according to IEC60688-1 and EN60688-1

• Temperature drift: 200 ppm/°C

• Load:

0 to 20mADC: ≤ 600Ω; 0 to ±20mADC: ≤ 550Ω
0 to ±10mADC: ≤ 1100Ω; 0 to ±5mADC: ≤ 2200Ω
0 to 10VDC: ≥10kΩ; 0 to ±10VDC: ≥10kΩ
0 to ±5VDC: ≥10kΩ; 0 to ±1VDC: ≥10kΩ
Insulation: by means of optocouplers, 4000 Vrms between
output and measuring inputs, 4000 Vrms between output
and power supply inputs.

RS422/RS485 SERIAL OUTPUT (on request):

• Type: bidirectional multidrop (static and dynamic variables).

• Connections: 2 or 4 wires, max. distance 1200m, termination

directly on the module.

• Addresses: from 1 to 255, key-pad programmable.

• Protocol: MODBUS/JBUS

Data (bidirectional):
Dynamic (reading only)
System variables: P,PAVG,S, Q, cosϕ, VL-L, f, THD energies,
status of digital inputs and status of the alarm output.
Single phase variables:
PL1, SL1, QL1, cosϕL1, VL1, AL1, THDL1, PL2, SL2, QL2, cosϕL2, VL2,
AL2, THDL2, PL3, SL3, QL3, cosϕL3, VL3, AL3, THDL3
Static (writing only)
All programming data, reset of energies, activation of the static
output.

Additional errors

57

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56

Energy Management

64

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63

60

• Stored energy (EEPROM): max 999.999.999 kWh/kvarh

• Data format: 1 start bit, 8 data bit, no parity/even parity/odd

parity, 1 stop bit

• Baud-rate: 1200, 2400, 4800 and 9600 baud,

• Insulation: by means of optocouplers,

4000 Vrms between output and measuring inputs,
4000 Vrms between output and power supply inputs

RS232 SERIAL OUTPUT (on request):

• Type: bidirectional (static and dynamic variables).

• Connections: 3 wires, maximum distance 15m

• Data format: 1 start bit, 8 data bit, no parity,

1stop bit

• Baud-rate: 9600 bauds

• Protocol: MODBUS (JBUS)

• Other data: as per RS485/RS422

DIGITAL OUTPUTS: (on request)
The working of the outputs (pulse, alarm or both) is fully
programmable and is independent of the output module that
has been chosen.

PULSE OUTPUT: (on request)

• Number of outputs: up to 4 (on request)

• Type: 1 to 1000 programmable pulses for k-M-G Wh, k-M-G

varh, open collector (NPN transistor)

• VON 1.2VDC / max. 100mA; VOFF 30VDC max.

• Pulse duration: 220ms (ON), ≥220ms (OFF) according to

DIN43864.

• Insulation: by means of optocouplers, 4000 Vrms output to
measuring inputs, 4000 Vrms output to power supply inputs

• Note: the outputs can be either open collector type or relay
type (for this latter one see the characteristics mentioned in
the ALARMS).

Technical features

Single- phase Connection

55

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56

Harmonic Analysis

64

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62

Technical features

ALARMS: (on request)

• Number of outputs: up to four, independent

• Alarm type: up alarm, down alarm, up alarm with latch, down

alarm with latch, phase asymmetry, phase loss, neutral loss.

• Set-point adjustment: 0 to 100% of the electrical scale

• Hysteresis: 0 to 100% of the electrical scale

• On time delay: 0 to 255s

• Relay status: selectable, normally close or normally open.

• Output type: relay, SPDT; AC 1-8A, 250VAC; DC 12-5A,

24VDC; AC 15-2.5A, 250VAC; DC 13-2.5A, 24VDC.

• Min. response time: ≤150ms, filter excluded, set-point on-
time delay: 0

• Insulation: 4000 Vrms output to measuring inputs,
4000 Vrms output to power supply input.

• Note: the outputs can be either relay type or open collector
type (for the latter type of output see the features mentioned
in the PULSE OUTPUT paragraph).

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Software functions

PASSWORD: numeric code of max 3 digits;

• 2 protection levels of the programming data

• 1st level - Password "0", no protection.

• 2nd level - Password from 1 to 499, all data are protected.

MEASUREMENT SELECTION: see the relevant table.
TRANSFORMER RATIO:
for CT up to 30,000A; for VT up to 600kV.
SCALING FACTOR:
Operating mode:

• Electrical scale: compression/expansion of the input scale to
be connected to up to 4 analogue outputs.

• Operating range: programmable within the whole measuring
range.

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Serial output

59

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56

64

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62

DIGITAL FILTER:

• Operating range: 0 to 99.9% of the input scale

• Filtering coefficient: 1 to 255

• Filter action: alarms, serial and analogue outputs (fundamental

variables: V, A, W and their derived ones).
EVENT LOGGING: only with the module RS232+RTC mod­ule. The max./min. values of the selected variables and the
alarm status are stored with reference to date (dd:mm:yy) and
time (hh:mm:ss). Max. capacity: 480 events.
VARIABLE PAGES: 4 variables per page; up to 27 pages, one
of which is completely programmable.

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Harmonic Distortion Analysis

ANALYSIS PRINCIPLE: FFT
HARMONIC MEASUREMENT:

• Current: up to the 50

• Voltage: up to the 50th harmonic

TYPE OF HARMONICS:

• THD (VL1); THD odd (VL1); THD even (VL1); the same for

the other phases: L2 and L3.

• THD (AL1); THD odd (AL1); THD even (AL1); the same for

the other phases: L2 and L3.
HARMONIC PHASE ANGLE:

• The instrument measures the angle between the single

harmonics of “V” and the single harmonics of “A” expressed

as “°”, making it possible to understand if the harmonics are

generated or imported.

Technical features

th

harmonic

On three-wire systems, the angle cannot be
measured.

Additional errors

57

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56

General specifications

64

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64

Technical features

HARMONIC DETAILS
For each THD page, it’s possible to see the order of the
harmonics.
DISPLAY PAGES
The harmonic content is displayed as a graph showing the
whole harmonic spectrum.
The information is given also as numerical data:
THD in % / RMS value
THD odd in % / RMS value
THD even in %/ RMS value

63

OTHERS

The harmonic distortion can be measured both in 3-wire or 4­wire systems. Tw: 0.02s

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Energy management

TIME PERIODS:
Selectable: single time, dual time and multitime.
SINGLE TIME:
Energy meters:
total: 4 (9 digits); no partial meters
DUAL TIME:

• Energy meters:

total: 4 (9 digits); partial: 8 (6 digits)

• Time periods:

2, programmable within 24 hours
MULTI-TIME:

• Number of energy meters:

total: 4 (9 digits); partial: 48 (6 digits)

• Time periods: 4, programmable within 24 hours

• Time seasons: 3, programmable within 12 months

Software functions

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64

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64

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Power supply specifications

AC VOLTAGE:
18 - 60 VDC/AC (on request); 90 - 260 VDC/AC (standard)
POWER CONSUMPTION:

≤

30VA / 12W (90-260V); ≤20VA / 12W (18-60V)

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General specifications

OPERATING TEMPERATURE:
from 0 to +50°C (R.H. <90% non-condensing)
STORAGE TEMPERATURE:
from -10 to +60°C (R.H.<90% non-condensing).
INSULATION REFERENCE VOLTAGE:
300 VRMS to earth
INSULATION: 4000 VRMS between inputs/outputs and earth
DIELECTRIC STRENGTH: 4000 VRMS for 1 minute
COMMON MODE REJECTION (CMRR): 100dB, from 48 to
62 Hz
EMC: EN 50081-2, EN 50082-2
OTHER STANDARDS:

• Safety: IEC 61010-1, EN 61010-1

• Product: IEC 60688-1, EN 60688-1,

• Energy measurement: EN61036, EN61268.

• Pulse output: DIN43864

APPROVALS:
CE, UL, CSA
CONNECTIONS:
Screw-type, max 2.5 mm2 x 2 conductors
HOUSING:
Dimensions: 96 x 96 x 140mm
Material: ABS, self-extinguishing: UL 94 V-0
DEGREE OF PROTECTION: Front: IP 65
WEIGHT: 600 g approx (packing included)

Technical features

RS485 Serial output

56

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52

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