Carlo Gavazzi WM3-96 User Manual

2 Index

CARLO GAVAZZI

WM3-96

32bit -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 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 .................................................................	13
■ 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	▲

Index	3
■ 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

▲

Displaying of the variables

7

2	4	▲

4	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
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.

			Front panel description
			6
	▲	2	▲

▲

To begin with

5

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.

■ 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.

Index

2 ▲

Displaying of the harmonic analysis

9

6	▲

6To begin with

■ Front panel description

Access to programming or settings’ confirmation.

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.

Scroll to the next page.

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).

▲

5

Scroll the display pages

8

▲

Displaying of the variables

7

■ 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).

To begin with

5 ▲

Pass 999

12

12

▲

8	Displaying of the variables

■ How to scroll the various pages

To scroll the various pages, use the and keys.

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.

■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, 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. To reset the "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.

Index

3 ▲

Energy meter pages

10

7	12	▲

Displaying of the variables

9

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.

The pointer shows which harmonic is being measured

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-L2-

L3) and relevant absolute current or voltage value of the harmonic.

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

Page 00

7 ▲

Access to the main menu

13

7	12

10	Displaying of the variables
	0°
	Generated
	Harmonics: 270°	90°
	Imported
	180°
	This angle is displayed only if the measurements
	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 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 ▲

Pass 999

12

7	12

Displaying of the variables

11

Page “27” (14 in single phase mode) 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

9 ▲

CT ratio

15

7	12

12	Displaying of the variables

Control type: alarm (e.g. A2),

diagnostics (e.g. D1), maximum value (MAX), minimum value (MIN).

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 log-
			ging: maximum
	Date of the	Time of the	and	minimum
			measured values.
	event.	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 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 function, 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

7 ▲

7

System

14

Let’s start 13

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.

1.2..

..2.1

Instrument revision

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

MENU title

Scroll bar

Menu

Serial number

Pass 1000

11 ▲

Min/Max values

17

21	▲

14	Let’s start
	■ Changing the password

1.2..

Measure ..2.1

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

Measure

Harmonic analysis

9

▲

■ System

This function allows the user to select the type of electrical system by choosing among single phase (1- phase), 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 .

VT ratio

16

13	21	▲

Let’s start 15

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.

1.2..

..2.1

Measure

■ 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 function CT RATIO by means of the 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 .

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 ▲

Average power calculation

19

13	21	▲

16			Let’s start
						■ 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”.
			1.2..			Choose the function VT RATIO by
						means of		and	; to confirm
			..2.1
						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		.

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

Pass 1000

11 ▲

■ 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;

			Event selection
13		21	18
			▲

Let’s start 17

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 .

Measure

■ 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.

CT ratio

15 ▲

Average power calculation

21

13	21	▲

18	Let’s start

CT ratio

15 ▲

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 confirmed the selection, the following message

will appear: “YOUR CHOICE WILL RESET THE VARIABLE, WILL YOU

CONTINUE? YES/NO”. Note: to enable the MIN/MAX recording function, read carefully the following paragraph, SELECTING THE EVENTS.

■ 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 DIG-

ITAL OUTPUTS;

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

ALARM DIGITAL OUTPUTS;

			Synchronization
13		21	20
			▲

1.2..

..2.

Min / Max values

17

▲

Let’s start 19

To use this function, select “EVENTS SELECT.” from the main menu using 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 ON-

OFF-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.

To 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. Then, you can set the integration time period; again, use the and keys to set the desired value and confirm it with .

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

Energy Meters Management

23

13	21	▲

20	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.

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).

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

CT ratio

15 ▲

Energy Meters Management

22

13	21	▲