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; ener-
gy 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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2Index
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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4To 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 communica-
tion 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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6To begin with
“tot-Prd”
4
8
8
The energy meter pages are different according to the set-
ting 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: integra-
tion 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: inte-
gration of the sum of positive sin-
gle 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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8To 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 dur-
ing tariff 1: integration of the sys-
tem 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 pass-
word, 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
9
12
22
S
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S
■System
This function allows the operator to
select the electrical system choos-
ing between three-phase with neu-
tral (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
.
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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 fol-
lowing 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 con-
nected VT (voltage transformer) is
of 20kV and the secondary is 100V,
the VT ratio will correspond to 200
(obtained by carrying out the fol-
lowing 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
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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 min-
utes”, 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
9
14
22
Where: Pc is the contractual power
t1 is the selected integration period
SYNCHRONIZATION OF THE POWER DEMAND CALCU-
LATION
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 syn-
chronization 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.

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13
Programming
Retransmitt. en. Meters
11
VT Ratio
9
17
22
S
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S
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■Access to the energy
meters menu
This function allows the user to choose
the parameters for the management of
the energy meters. Choose the function
“COUntEr”by means of the and
keys: to confirm the value and enter
the submenu press . By means of
the and keys, it’s possible to
scroll all the functions relating to the
energy meters that will be described in
detail below.
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S
S
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❑The functions of the Energy
Meters submenu.
Choose the desired function by
means of the and keys,
press to confirm. It’s possible
to choose the following combina-
tions:
tot: it enables the combination of
total and partial meters (see page
6).
tot Prd: it enables the combination
of total and partial meters: tariff t1,
t2, t3 and t4 are managed by the
digital inputs (see page 8);
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14 Programming
Digital Outputs
9
Main Menu
9
16
22
S
S
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1.2..
..2.1
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tot 1.Cn: it enables the combination of
total en. meters and day-time and night-
time GAS meters (see also “Display
pages”on page 7). Press to select
“PrESCAL Cn1”, then enter by means
of the keys the weight of every
pulse of the IN2 digital input of the GAS
meters and confirm with .
The same input IN2 increases alterna-
tively the day-time and night-time GAS
meters depending on the status of IN3.
tot 2.Cn: it enables the combination of
total energy meters and Water and Gas
meters (see also “Display pages”on
page 7). Press to select “PrESCAL
Cn1”then enter by means of the
keys the weight of every pulse of
the IN3 digital input of the water meters,
confirm with and go to the
“PrESCAL Cn2”submenu.
Enter by means of the keys
the weight of every pulse of the IN2
digital input of the Gas meter, then
confirm with .
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S
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S
S
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S
S
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1.2..
..2.1
▼
S
S
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1.2..
..2.1
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The prescaler (PrESCAL) sets the weight of the input
pulses of the digital input module; e.g.: by setting the
prescaler at 10, for each received pulse the meter
increases by 10 (10, 20, 30, etc.). The range of the
prescaler varies from 0.1 to 100.0.

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15
Programming
Digital Output 2
13
Energy Meters
9
19
22
The increase of the Water, Gas meters, the selec-
tion of night/day tariff of the gas meters or the
change of tariff (t1, t2 t3, t4) is carried out thanks to
the combination of the input pulses to the AQ1038
or AQ1042 digital input module, according to the
following table:
SETTING OF
INSTRUMENT
Setting “tot Prd”
Display of total and par-
tial multi-tariff energy
meters.
Setting “tot 1.Cn”
Display of total en.
meters and GAS
day/night tariff.
Setting “tot 2.Cn”
Display of total energy
meters, GAS and
WATER.
RESULT
Tariff 1
Tariff 2
Tariff 3
Tariff 4
GAS night tariff
GAS day tariff
DIGITAL INPUTS
IN 3
ON
ON
OFF
OFF
ON
OFF
OFF
ON
Increase
of
GAS
meters
(*)
Increase
of
WATER
meters
(*)
Increase
of
GAS
meters
(*)
ON
ON
IN 2
(*) The pulse corresponds to an increase of the various
meters by the pre-set weight.
If the IN 1 contact is closed (3 digital inputs module), the
programming from key pad is inhibited.
The synchronisation starts at the status modification of the
digital inputs (IN2 and IN3) when the instrument is set to
“tot”or “tot-Prd”.

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16 Programming
Alarm Output
11
dmd Calculation
9
18
22
S
S
S
S
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Alarm digital out-
put on page 18
Digital output 2
on page 19
■Digital Outputs
❑Digital Output 1
This function enables to set the
parameters of the digital outputs.
Choose the “diGout”function by
means of the and keys, to
enter the menu press . Then,
select one of the following
options;
PUL: access to the retransmission
functions of the totalized energy
by means of pulses (see pulse dig-
ital output);
ALr: access to alarm functions
(see alarm digital output); To enter
to relevant menu press ;
rEn: enables the activation of the
output by means of the serial
communication. Confirm with
to enable the function.
❑Pulse digital output
Select “diGout1 PUL”by means of
the and keys: press
to enter the relevant programming
submenu, then choose the meter
to be retransmitted among the
available ones.
S
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S
S
S
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S
S

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17
Programming
End of Programming
15
Digital Input Table
9
21
22
Digital output 2
on page 19
The list displaying the en. meters to be retransmitted
varies depending on the chosen setting of the
instrument, that is, depending on the “en. meter”
selection chosen among: “tot”, “tot-Prd”, “tot-
1.Cn”, “tot-2.Cn”, as reported in the table below:
IF THE SELECTION IS
tot, tot-1.Cn, tot-2.Cn:
kWh (consumed)
kWh- (generated)
kvarh ind (cons. inductive)
kvarh -ind (gen. inductive)
kvarh CAP (cons. capacitive)
kvarh -CAP (gen. capacitive)
IF THE SELECTION IS
tot-Prd:
kWh tot (total energy meter)
kvarh tot (total en. meter)
kWh t1 (energy meter tariff 1)
kvarh t1 (energy meter tariff 1)
and so on for the other
tariffs t2-t3-t4.
EXAMPLE OF DISPLAY
Scroll the energy meters displayed by means of and
choose the desired one by means of , then the instru-
ment displays the page where the pulses to be associated
to the energy are indicated.
S
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Select the number of pulses by
means of (pulses/kWh from
1 to 100) and confirm with .
The
programming continues for digital
output 2.
S
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S
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1.2..
..2.1
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18 Programming
Digital Filter
13
Energy Meters Menu
9
20
22
S
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❑Alarm Digital Output
This function allows the
user to set the parameters of the
alarm digital output. Choose the
“diGout1- ALr”function by means
of the keys: to enter the
menu press . Then, set the fol-
lowing parameters:
VAr: choose the variable to be
associated to the alarm activation
by means of the and keys
and confirm with .
rnG: choose the decimal point
position.
on: activation set-point, value of the
variable over which the alarm is acti-
vated. Select the value of the variable
by means of the and keys
and confirm it with ;
oFF: deactivation set-point, value of
the variable over which the alarm is
deactivated. Select the value of the
variable by means of the and
keys and confirm it with ;
nd: normally de-energized output
when there is no alarm.
nE: normally energized output
when there is no alarm.
Select the output status by means
of the and keys and con-
firm it with ;
S
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S
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S
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S
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S
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1.2..
..2.1
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1.2..
..2.1
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S
S
S
S

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19
Programming
Useful Information
17
R etransmittable en. meters
9
23
22
SEC: delay time from the detection
of the alarm and the activation of
the output. Choose the value of the
delay time in seconds by means of
the and keys (up to 255
seconds) and confirm with .
S
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S
Digital output 2
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1.2..
..2.1
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S
S
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❑Digital Output 2
PUL: access to the retransmission
functions of the totalized energy by
means of pulses (see pulse digital
output on page 16).
ALr: access to alarm functions (see
alarm output on page 18). To enter
the relevant menu press ;
rEn: enables the activation of the
output by means of the serial com-
munication. Confirm with to
enable the function.
S
S