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
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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
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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
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■
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
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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
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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
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12
Pass 999
12
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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
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7
Energy meter pages
12
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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
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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
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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
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12
7
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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
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7
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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
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13
21
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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
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Average power calculation
13
21
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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
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13
21
Event selection
18
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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
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Average power calculation
21
13
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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
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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
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13
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