Carlo gavazzi WM24-96 PROGRAMMING User Manual

Universal Utility Meter
Contatore Universale

USER MANUAL
MANUALE ISTRUZIONI

WM24-96

Modular system
Tecnologia modulare

CARLO GAVAZZI

Automation Components

WM24-96: Modular Universal Utility

Meter and Power Analyzer

Plug and play module system; ener­gy meters, gas and water meter.
These are only a few among many
other functions performed by your
WM24-96. What’s more, Carlo
Gavazzi means ISO9001 certification,
a working experience of many
decades and a widespread presence
all over the world. All this because
we want our customers to have the

top service and the top products.

Welcome in the Carlo Gavazzi world

and compliments for your smart
choice. Visit our website and
evaluate our range of products:

www.carlogavazzi.com

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CARLO GAVAZZI

Automation Components

Plug and Play

Modules

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2

Index

Front Panel Description

4

3

CARLO GAVAZZI
WM24-96, modular universal utility meter and power analyzer
FW rev. 01

TO BEGIN WITH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .04

■ Front panel description . . . . . . . . . . . . . . . . . . . .04

■ List and description of displayed measuring pages . . . .04

PROGRAMMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . .09

■ Access to the main menu . . . . . . . . . . . . . . . . . . .09

■ Change password . . . . . . . . . . . . . . . . . . . . . . . .09

■ System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

■ CT ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

■ VT ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

■ Dmd calculation . . . . . . . . . . . . . . . . . . . . . . . . .11

■ Access to the energy meters menus . . . . . . . . . .13

❑ The functions of the Energy Meters submenu. . .13

■ Digital outputs . . . . . . . . . . . . . . . . . . . . . . . . . . .16

❑ Digital output 1 . . . . . . . . . . . . . . . . . . . . . . .16

❑ Pulse digital output . . . . . . . . . . . . . . . . . . . .16

❑ Alarm digital output . . . . . . . . . . . . . . . . . . . .18

❑ Digital output 2 . . . . . . . . . . . . . . . . . . . . . . .19

■ Setting of serial communication port address . . . .20

■ Digital filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

■ End of programming . . . . . . . . . . . . . . . . . . . . . .21

■ Reset of total gas, water, energy meters . . . . . . .21

■ Reset of partial gas, water, energy meters . . . . . .22

■ How to prevent key-pad programming . . . . . . . . .22

USEFUL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . .23

■ Example of how to use the digital filter . . . . . . . . .23

■ What is ASY? . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

■ Retransmitted variables . . . . . . . . . . . . . . . . . . . .24

■ Alarm digital output . . . . . . . . . . . . . . . . . . . . . . .25

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

■ Operations preliminary to the installation . . . . . . .26

■ Front panel cut-out . . . . . . . . . . . . . . . . . . . . . . .27

■ Position of slots and relevant modules . . . . . . . . .28

■ Connection of optional modules . . . . . . . . . . . . . .31

■ 1-phase electrical diagrams . . . . . . . . . . . . . . . . .34

■ 3-phase electrical diagrams . . . . . . . . . . . . . . . . .34

TECHNICAL FEATURES . . . . . . . . . . . . . . . . . . . . .36

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.

HOW TO USE THE SYMBOLS

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

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

This symbol indicates a particularly important
subject or information.

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

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3

Index

Display “tot -1 .Cn”

2

7

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When the instrument is switched on it shows the page below:

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4

To begin with

Gas, water, en. meters

pages

6

8

Back-lighted LCD Display.

Display previous page.

Display next page.

Access to programming or
setting confirmation.

■Front Panel Description

■ List and Description of Displayed

Measuring Pages

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kW∑

PF∑

kvar∑

Hz

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kW∑

PF∑

kVA∑

Hz

kW dmd

kVA dmd

Serial communica­tion status: r=Rx;
t=Tx (only with
serial communicat.
module inserted)

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If displayed in the
measuring mode it
means: the alarm is
ON.

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5

To begin with

Programming

3

Index

4

9

8

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VL1-N

VL2-N

VL3-N

V∑

A L1

A L2

A L3

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W L1

W L2

W L3

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PF L1

PF L2

PF L3

PF ∑

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kvar L1

kvar L2

kvar L3

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kVA L1

kVA L2

kVA L3

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A n

Multiplyer

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6

To begin with

“tot-Prd”

488

The energy meter pages are different according to the set­ting of the instrument (see energy meter menu on pag.13).

■ If you choose “tot” the instrument displays:

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Generated capacitive reactive
energy: integration of the sum of
single phase reactive powers of
quadrant 4 only.

Consumed capacitive reactive
energy: integration of the sum of
single phase reactive powers of
quadrant 2 only.

Generated inductive reactive
energy: integration of the sum of
single phase reactive powers of
quadrant 3 only.

Consumed inductive reactive
energy: integration of the sum of
single phase reactive powers of
quadrant 1 only.

Generated active energy: integra­tion of the sum of single phase
negative active powers only.

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7

To begin with

dmd calculation

5

Measuring Pages

4

11

8

■ If you choose “tot-1.Cn” the instrument displays all

the pages displayed in the “tot” selection as well as:

■ If you choose “tot-2.Cn” the instrument displays all

the pages displayed in the “tot” selection as well as:

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Consumed active energy: inte­gration of the sum of positive sin­gle phase active powers only.

GAS meter as m3, night tariff.

GAS meter as m3, day tariff.

Total WATER meter as m3.

Total GAS meter as m3.

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8

To begin with

System

3

Index

4

10

■ If you choose “tot-Prd” the instrument displays:

Once the energy meter pages are finished, the instrument
will display some pages related to the variables connected
to the alarm.

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Reactive energy consumed dur­ing tariff 1: integration of the sys­tem active power only if positive
(same is also for tariff 2, 3 and 4).

Active energy consumed during
tariff 1: integration of the system
active power only if positive
(same is for tariff 2, 3 and 4).

Consumed total reactive energy:
integration of the system reactive
power only if positive.

Consumed total active energy:
integration of the system active
power only if positive.

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The scrolling of the measuring pages is cyclic, at the end of the
cycle, you go back to the first page (see page 4).

Display of alarm settings (AL1 and
AL2 if both alarms have been set).
It displays the variable connected
to the alarm.

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9

Programming

En. meters Menu

7

En. meters Display

13

22

When the “AL” box (normally used for the alarm
indication) is active during the programming phase,
it means that the displayed value can be modified.
This rule applies to all the programming menus.

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S

S

Access to the

main menu

■Access to the main menu

To access to the programming
menus from the measuring and dis-

play phase, press the key : when
the instrument asks for the pass­word, enter the correct PASS value

by means of the and keys;
afterwards confirm by means of the

key. If the password is correct
(when the instrument is new, the
password is 0), the instrument goes
to the main functions menu.

S

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S

S

S

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■Change Password

This function allows the operator to
choose the desired password value
(from 0 to 1000).
Choose the “CnG.PASS” function

by means of the and keys,

then press to modify PASS,
enter the desired value by means of

the and keys and confirm

the new value with the key.

S

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S

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10

Programming

Synchronization

5

Measuring Pages

91222

S

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S

■System

This function allows the operator to
select the electrical system choos­ing between three-phase with neu­tral (3P.n) and three-phase without
neutral (3P).

Choose by means of and

the “SySTEn” function, press
to enter the menu; then, select the
desired system by means of the

and keys and confirm with

.

S

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S

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S

S

S

S

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1.2..
..2.1

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■CT ratio

This function allows the user to
select the value of the CT ratio.
Example: if the CT primary (current
transformer) has a current of 300A
and the secondary has a current of
5A, the CT ratio corresponds to 60
(obtained by carrying out the fol­lowing calculation: 300/5).
Choose the “Ct.rAtio” function by

means of the and keys; to

enter the menu press ; then
select the desired value by means

of the and keys and con-

firm the new value with .

S

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S

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11

Programming

Digital Input Table

9

Main Menu

9

15

22

S

S

S

S

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1.2..
..2.1

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■VT ratio

This function allows the user to
select the value of the VT ratio.
Example: if the primary of the con­nected VT (voltage transformer) is
of 20kV and the secondary is 100V,
the VT ratio will correspond to 200
(obtained by carrying out the fol­lowing calculation: 20000/100).
Choose the “Vt.rAtio” function by

means of the and keys; to

enter the menu press , then
select the desired value by means

of the and keys and con-

firm it with .

By changing the VT and
CT ratio, the energy
meters are reset.

S

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S

▼▲

S

S

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1.2..
..2.1

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■Dmd calculation

This function allows the user to
select the integration time of the W
and VA demand value. To enter
these functions select “P.int t” from

the main menu by the and

keys; to enter the menu press .
Set the minutes by means of the

and keys and confirm the

new value with .

S

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S

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If, for example, you select the value “15 min­utes”, the instrument calculates the demand value
and updates the value every 15 minutes. See the
diagram below.

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12

Programming

Meters Submenu

7

Energy Meters Pages

91422

Where: Pc is the contractual power

t1 is the selected integration period

SYNCHRONIZATION OF THE POWER DEMAND CALCU­LATION
The synchronization enables the WM24-96, by means of the
digital inputs, to start the integration of the power demand
at the same time as the official watthour meter. The syn­chronization can be carried out in two ways:

- Without digital input module: the reset and the start of the
energy integration are carried out when the instrument is
switched on;

- With the digital input module: the synch. starts when one
of the digital inputs changes status (that is to say when the
tariff changes). Any following change of status resets and
synchronizes again the calculation of the power demand.