CARLO GAVAZZI WM3-96 - PROGRAMMING User manual

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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 ... 8
❏ 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 configuration11
❏ 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 ................................................................. 13
■ Main menu ..............................................................13
■ Changing the password ..........................................14
■ Electrical system .....................................................14
■ CT ratio .................................................................15
■ VT ratio .................................................................16
■ Display page ...........................................................16
Index
How to use the symbols
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Index
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Displaying of the variables
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■ 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.... 22
❏ Single tariff management..................................22
❏ Dual tariff Management: whole year.................22
❏ Programming of the holidays period.................25
❏ Multi-tariff management of the energy meters ..... 27
❏ 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

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❏ 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
ELECTRICAL DIAGRAMS...............................................52
■ Electrical connection diagrams ...............................52
❏ Three-phase connection, Balanced load ..........52
❏ 4-wire three-phase connection, unbalanced load 53
❏ 3-wire, three-phase Aron connection ,..................
unbalanced load ................................................54
❏ Single-phase connection ..................................55
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
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.
Index
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Front panel description
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To begin with
Displaying of the harmonic analysis
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Index
2
Go to the page where the subject written
on the bottom of the current page starts.
Thissymbolindicatesaparticularlyimportant
subject or information.
This symbol indicates that more details are
given on the current subject.
We suggest you to keep the original pack-
ing in case it is necessary to return the
instrument to our Technical Service De-
partment.Inordertoachievethebestresults
with your instrument, we recommend you
to read this instruction manual carefully.
■ 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
•Programmingofthecalculationoftheintegrationtimeperiod
•Tariff management
•Harmonic analysis enabling
•Clock adjustment (if present)
•Programming of the pulse output (if present)
•Programmingof the serialandanalogue outputs (ifpresent)
•Programming of the digital filter.
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To begin with
■ Front panel description
Scroll the display pages
8
Exitfrom the menu and
cancel the choice you
have made.
It allows you to access
somefunctionsrelating
to the displayed
variables.
5
Scroll to the
previous page.
Scroll to the
next 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
Inordertogetthebestreadability ofthedisplay,holdthekeys
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).

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Displaying of the variables
5
Pass 999
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12
To begin with
■ Page “00”, Starting page
When the instrument is switched on, the main page of
variabledisplayingis shown.Thisfirstpage,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
otherpages (up to27 dependingonthe instrument configura-
tion), the type of variables displayed in the four displaying
areas isautomaticallyselectedandcannotbechanged.Inthe
tableonpage41youcanseethecontentsofallthepagesthat
can be displayed by WM3-96.
Measured variables
The bottom part of the display, where the status of the digital
outputsisindicated, iscommontoallthepages.Iftheoutputs
are not present, only an empty black rectangular frame is
shown;if theoutputsarepresent,thedisplaywillshowaletter
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
inalarm,orblackinawhitebackgroundtoindicatethatthe
output is not in alarm.
"D" Indicates a diagnostic output. This is a particular type of
alarmthatisactivatedwhentheneutralwireconnectionis
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).
Clock
Number of the
displayed page

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Index Energy meter pages
310
■ How the F key changes function depending on
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,ifyouchoose therewon’tbeanyreset. 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. To reset the
"MIN/MAX" recording, proceed as follows: enter the
functionby pressingthe key,afterthata messagewill
appear: "WILL YOU RESET MIN/MAX VALUES, WILL
YOU CONTINUE?" If you choose there won’t be any
reset,ifyouchoose theresetwillnotbemade.The
(movesfromlefttoright)and (movesfromrighttoleft)
keys allow you to select the value that you want to reset;
toconfirmthereset press the key. To exit thefunction
press the key again.
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■ How to scroll the various pages
To scroll the various pages, use the and keys.
Pressingthe keyinanyoneofthedisplaypages,
youaccesstotheprogrammingphase.The key,
on the contrary, has various functions depending on
the selected page.
Displaying of the variables

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SIMPLE ANALYSIS:
Displaying of the variables
712
Access to the main menu
713
DETAILED ANALYSIS:
T he pointer
shows which
harmonic is
being measured
Page 00
Totalharmonicdistortionand
relevant value in percentage
Line phase being measured
(L1-L2-L3) and relevant
voltage or current value
Harmonicorder(h1toh50)ofthe
phase being measured (L1-L2-
L3)andrelevantabsolutecurrent
orvoltagevalueoftheharmonic.
Harmonic order (from h1 to h50),
relevantconventionalsign(–or+)
andvalueoftheharmonicgivenin
percentage.
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°corre-
sponds to an imported harmonic.
❑ 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
page29toenablethem.The keyisactive,accesstothedetailed
analysis of the harmonics. After pressing the key, a pointer
appears along the horizontal axis (see figures below). To display the
datarelatingtothesingleharmonicsmovealongthehistogram using
the (moves from left to right) and (moves from right to left)
keys. For each harmonic the instrument measures the % value with
referencetothefundamentaland thesingleharmonicanglebetween
the "V" harmonic and the "A" harmonic of the same order.

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Harmonics:
Displaying of the variables
Pass 999
12
712
To begin with
Generated
Imported
90°
270°
0°
180°
5
Thisangleisdisplayedonlyifthemeasurements
are taken in a three-phase system with neutral.
❑ Pages relating to the energy meters
❑ Page "25" (12 in single phase mode)
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
relatingtotheseasonishighlighted.Byusingthe 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'spossibletochangethetariffperiodwithinthe
displayedseason. Pressingthe keyforthethirdtime,
you go back to the measuring page. The changes of
seasonandtariff period only refer tothedisplayingofthe
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.

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Displaying of the variables
Harmonic analysis CT ratio
915
712
Alarms
(A1-A2-A3-A4).
Diagnostics
(D1-D2-D3-D4).
Pulse outputs
(P1-P2-P3-P4).
Digital inputs.
❑ Page “27”(14 in single phase mode)
Displaying of instrument configuration
keydisabled.Page27showstheconfigurationofthemain
input (IN) and output (OUT) modules.
The letters and numbers between parenthesis are referred to
therelevantslot,whilethetexton theirrightshowsthevariable
referred to the output. With reference to the digital inputs
(DIG.INP.), the ON/OFFstatusofeachoneofthemisshown.
❑ Displaying with access to the Pass Code
❑ Pass "1000": displaying of recorded events
(Only if the RS232+RTC module is present)
Pressthe key:when the instrument asksyou for thepass
code ,setthevalue"1000";iftheRS232+RTC
module is present, the instrument shows you the page where
the events are displayed and where the instrument stores, in
achronological order, thealarmsthat have occurreduntil 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
numberofeventsthathave beenpreviouslystored.The figure
on the following page explains you the meaning of the dis-
played information.

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Displaying of the variables
7
Page 00 System
714
Toresetalltheeventspressthe key,tocontinuethereset
procedurepressthe key: toexitfromtheresetprocedure
press the key.
❑ Pass"999":energyconsumptionstorage (Onlyifthe
RS232+RTC module is present)
TheRS232+RTCmoduleallowsalsothestorageoftheenergy
consumption of the previous two months. To enter this func-
tion,pressthe key:whentheinstrumentasksforthepass
code , set the value "999": the instrument
shows you the page where all the information are stored.
Control type:
alarm (e.g. A2),
diagnostics (e.g. D1),
maximumvalue(MAX),
minimum value (MIN).
Only for alarms and diag-
nostics: detection of the
abnormal condition (ON)
orreturntothenormalcon-
dition (OFF).
Variablebeing
controlled.
Alarms: value of
the ON alarm;
MaxandMINlog-
ging: maximum
and minimum
measuredvalues.
Date of the
event. Time of the event.

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■ 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
thecorrectpasswordvaluebymeans
ofthe and keys;thenconfirm
it pressing the key again. If the
password is correct (the default
password is 0) you are allowed to
access to the main menu of the
programming phase. To reset your
choice and go back to the measuring
mode, press .
Pass 1000 Min/Max values
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1.2..
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Use the and keys to show the partial values, to
exit press the key.
MENU title
Scroll bar
Menu
Serial number
Instrument revision
Let’s start
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.

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■ Changing the password
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
main menu, as shown on the figure
ontheleft.Toresetyourchoicesand
gobacktothemainmenupress .
■ System
This function allows the user to se-
lect the type of electrical system by
choosing among single phase (1-
phase), balanced three-phase plus
neutral (3+N phases bal.), unbal-
anced three-phase plus neutral
(3+N phases unbal), three-phase
balanced (3 phases bal) and three-
phaseunbalanced(3 phasesunbal).
Choose the SYSTEM function by
means of the and keys,
press to confirm; then select the
desiredsystembymeansofthe
and keys and confirm with .
Let’s start
Harmonic analysis VT ratio
916
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1.2..
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Measure
Measure

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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
Thisfunctionallows you to selectthe
valueoftheCT ratio. Example: if the
primary of the CT (current trans-
former)beingconnectedis300Aand
the secondary is 5A, the CT ratio
correspondsto60(obtainedfromthe
calculation:300/5).Choosethefunc-
tionCTRATIObymeans of the
and keys;press toconfirm,
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 .
Note that when the CT ratio is changed all the
MIN/MAX values, the events and the partial
energy meters are reset.
Energy meters Average power calculation
10 19
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1.2..
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Measure
Let’s start

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■ VT ratio
This function allows the user to se-
lect the multiplier value of the VT.
Example: if the primary of the VT
(voltage transformer) being con-
nected 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”.
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
Thisfunctionallows you to selectthe
variables to be displayed on page
00. Choose the DISPLAY PAGE
function by means of the and
keys;press toconfirm, then
select the desired section of the dis-
play using the and keys;
Changing the VT ratio, all the MIN/MAX values,
all events and partial energy meters are reset.
Pass 1000
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1.2..
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Event selection
Let’s start
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■ MIN/MAX VALUES
This function allows the user to as-
sociate some variables to the auto-
matic recording of maximum values
(from MAX1 to MAX12) and mini-
mum values (from MIN1 to MIN8).
To use this function, proceed as fol-
lows: select the MIN MAX VALUES
functionusingthe and keys
and confirm it with .
A new window will appear showing
you the list of available memory lo-
cations: select the locations using
the and keys, starting from
MAX1 for the maximum values and
MIN1fortheminimumvalues.Press
to open the secondary menu
withthelistoftheavailablevariables
to be selected.
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 .
CT ratio
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Average power calculation
21
Measure
Let’s start

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■ Selecting the events
This function allows the user to en-
able the events for data logging:
•MAX (logging of up to 12 different
variablesMAX1toMAX12),seealso:
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“remotecontrol”(upto4remotely
controllable outputs: from R1 to R4),
see also REMOTE CONTROL DIG-
ITAL OUTPUTS;
•A"alarms" (logging of up to 4
alarms: from A1 to A4), see also:
ALARM DIGITAL OUTPUTS;
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 .
Once you have con-
firmed the selection,
the following message
will appear: “YOUR CHOICE WILL
RESETTHE VARIABLE, WILLYOU
CONTINUE? YES/NO”. Note: to en-
able the MIN/MAX recording func-
tion,readcarefullythefollowingpara-
graph, SELECTING THE EVENTS.
Let’s start
CT ratio
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Synchronization
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Tousethisfunction,select“EVENTS
SELECT.”from the main menu us-
ing the and keys and con-
firmit pressing .Usethe and
keys to select where you want
to enable the event (ON) or disable
it(OFF).Thefunctionofthe ON-
OFF-ON key is cyclical. To go back
to the main menu press .
■ Average power calculation
Thisfunctionallowsto select the cal-
culation method of the W-VA-cosϕ
average value.
To enterthesefunctions,select“AV-
ERAGE CALCULATION”from the
mainmenubymeansofthe and
keys and confirm the selection
pressing the key.
You can now choose the average
calculation method, that is you can
choosebetween FIXED and FLOAT
SELECTIONusingthe and
keys.Confirmyourchoiceusing the
key. Then, you can set the inte-
gration time period; again, use the
and keys to set the de-
sired value and confirm it with .
To reset your choices and go back
to the main menu, press .
1.2..
..2.
Min / Max values
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Energy Meters Management
23
Let’s start

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FIXED SELECTION: if, e.g., you set this value at
15 minutes, the instrument calculates and up-
dates the average of the variables (W-VA-PF)
every 15 minutes.
FLOAT SELECTION: if, e.g., you set this value at 15 min-
utes, the instrument at first calculates and updates the
averageofthevariable(W-VA-PF)after15minutesandthen
every minute (fixed time).
Seethe diagramthatshowsthedifferentoperatingmethods
(FIXED and FLOAT) on the following page.
SYNCHRONIZATION OF THE FIXED OR FLOAT CALCU-
LATION
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
followingchangeofstatewillmakethesynchronizationreset
and start all over again;
•with the RS232+RTC module:
thesynchronizationbeginsat the exact hour thatfollows the
switchonoftheinstrument(E.g.:iftheinstrumentisswitched
on at 10:25, the synchronization begins at 11:00).
In case both modules are installed (that is
digital inputs and RS232+RTC) the priority
will be given to the Digital Input modules.
Let’s start
CT ratio
15
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Energy Meters Management
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Average power calculation
19
13
Holiday period
25
Let’s start
FIXED AVERAGE CALCULATION
FLOATAVERAGE CALCULATION
Where: Pmax is the maximum measured power
Pc is the contractual power,
t1 is the selected average period