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 .........................
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 ..
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 ...............................................
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.
6 To begin with ■ Front panel description 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. Scroll to the next page.
7 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.
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.
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 key is active, access to the detailed page 29 to enable them.The analysis of the harmonics. After pressing the key, a pointer appears along the horizontal axis (see figures below).
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.
11 Displaying of the variables ❑ 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.
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. Date of the event. Time of the event. Alarms: value of the ON alarm; Max and MIN logging: maximum and minimum measured values.
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.
14 Let’s start ■ Changing the password Measure 1.2.. ..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 and keys. the 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 .
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. ■ CT ratio Measure 1.2.. ..2.1 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).
16 Let’s start ■ VT ratio 1.2.. ..2.1 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”. Choose the function VT RATIO by means of and ; to confirm press ; then select the desired and keys and value by the confirm with . To reset your choice and go back to the main .
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 .
18 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 . 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.
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 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.
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.
Let’s start 21 FIXED AVERAGE CALCULATION Where: Pmax is the maximum measured power Pc is the contractual power, t1 is the selected average period FLOAT AVERAGE CALCULATION 13 Holiday period ▲ ▲ Average power calculation 19 25 877) 268-3700 · www.carlogavazzisales.
22 Energy Meters Management ■ Access to the Energy Meters Management Menu TARIFF SELECTION TARIFF SELECTION This function allows you to choose the type of management of the energy meters. Select “ENERGY METERS” from the main menu by means of the and keys; confirm with to access the specific secondary menu. ❑ Single tariff This function sets the Energy meters according to a single tariff which is the same for the whole year. Select SINGLE TARIFF by means of the and keys and confirm your choice with .
Energy Meters Management 1.2.. ..2.1 1.2.. ..2.1 1.2.. ..2.1 Proceed with the same principle for the following rows. To exit any item use always . 3- press the key again; the “endtariff” hour is highlighted; 4- press the key again; the HOURS box will appear on the lower part of the display; now you can choose the hours - e.g. 8 - by means of the and keys.
24 Energy Meters Management a) the day can be divided into up to 8 different periods connected to up to 4 different tariffs according to the following working principle: 22 24 2 20 trf1 4 18 + kWh - kWh + kvarh - kvarh 6 16 8 14 12 1 Imported active energy Exported active energy Imported reactive energy Exported reactive energy 10 The measured energy (partial energy) is placed in TARIFF 1 when the time period is from midnight to e.g. 8:00am, in TARIFF 2 when the time period is from 8:00a.m.
Energy Meters Management 25 ❑ PROGRAMMING THE HOLIDAY PERIOD To program the HOLIDAY period, proceed in the following way. 10- Choose HOLIDAY in the SEASON menu by means of the 1.2.. ..2.1 1.2.. ..2.1 1.2.. ..2.1 1.2.. ..2.1 On page 26 To reset, press .
26 Energy Meters Management To program the “end date” follow the same procedure described above from No. 11 to No. 16. After confirming the “end” day by means of the key, the HOLIDAY box is highlighted to indicate the conclusion of the HOLIDAY period programming cycle. You can also use the (moves from right to left) and (moves from left to right) keys to scroll along the available parameters. pag. 25 1.2.. ..2.
Energy Meters Management 27 ❑ MULTI TARIFF This function allows the management of the meters according to many periods per day and three periods per year: WINTER, SUMMER and HOLIDAY. To program the parameters relating to the winter season, simply follow the same procedure (holidays) described on page 25 from No. 11 to No. 17. The parameters of the SUMMER season are automatically set by the instrument as a difference between the previous two periods of the Year.
28 Energy Meters Management DUAL TARIFF management trf1 22 24 2 20 trf1 4 18 6 16 8 14 12 10 WHOLE YEAR trf start end 1 OO:OO O8:OO 2 O8:OO 2O:OO 1 2O:OO OO:OO 1 TARIFF trf2 As you can see on the figure above, there is a daily division into three periods with two different tariffs.
Outputs / Other settings To conclude the RESET procedure, press the TARIFF SELECTION menu, press .
30 Outputs / Other settings ■ Clock setting This function enables the user to set the data relating to date and time. Select CLOCK from the main menu and keys; by means of the then press to enter the menu. Choose the desired function by means of the and keys; Enter the desired secondary menu with . Then set the desired value by means of the and keys and confirm the value with . To reset the choices and go back to the main menu, press .
Outputs / Other settings 31 DIAGNOSTIC OUTPUT, REMOTE CONTROL OUTPUT. To enter these functions, choose DIGITAL OUTPUT and from the main menu using the keys, then confirm with . The instrument shows a window where the various slots (OUT C0, OUT C1, etc.) and output channels (1, 2, etc.) are shown. Select the desired and keys and confirm with to enter slot using the the output function menu (if the module is not in the slot, the instrument displays NOT AVAILABLE).
32 Outputs / Other settings consumed active energy (kWh +), generated active energy (kWh -), consumed reactive energy (kvarh +), generated reactive energy (kvarh -), press the “ ” key to open the menu of energy/pulse output management. There are five possible selections: TOTAL, output connected to the total energy meter; TARIFF, output connected to the desired tariff type. Confirm with and go back to the digital output menu. To reset the choices and go back to the main menu, press .
Outputs / Other settings 33 choose among all the available ones (see on page 43); scroll the variables by means of the and keys and confirm the selection with . The availability (or non-availability) of the variable is clearly indicated on the display. •TYPE: type of alarm: up alarm (UP); down alarm (DOWN); up alarm with latch (UP L): in this case the reset of the output can only be manual; down alarm with latch (D.L.
34 Outputs / Other settings ❑ Diagnostic In a 3-phase unbalanced-load system, this function controls the presence of the neutral connection. If the connection to the neutral is not detected, the instrument activates an alarm. Select “DIAGNOSTIC” by means of the and keys, then press to confirm it. To reset your choice and go back to the main menu, press .
35 Outputs / Other settings ■ Analogue outputs Select ANALOG OUTPUTS from the and main menu by means of the keys; confirm it with to enter the various parameters: OUT A0: Analogue output, SLOT A0, channel 1; OUT A1: Analogue output, SLOT A1, channel 2; OUT B0: Analogue output, SLOT B0, channel 3; OUT B1: Analogue output, SLOT B1, channel 4.
36 Outputs / Other settings •MIN IN: minimum value of the variable input range. Select the and keys and desired value by means of the confirm it with . •MAX IN: maximum value of the variable input range. Select the desired value by means of the and keys and confirm it with . To exit from any of the menus, press . For further information, see examples No. 1 and 2 on page 38/39. For the resolution of the value to be retransmitted, see the note on page 33.
Outputs / Other settings ■ Digital filter 37 Select FILTER by means of and and confirm with . Select the function to be set from one of the submenus by means of the and keys and confirm it with . You can choose among the following 3 selections: • DISPLAY: to select the display of the measurements of the instantaneous variables at 4-digit (max 9999) or 3 1/2-digit (max 1999) • RANGE, to set the operating range of the digital filter. The value is expressed as % of the full scale value.
38 Useful information The variables measured by the instrument are correct if the inputs have been connected according to the right polarities (see figure below). Should the connection not be conforming to the right polarities, measuring and retransmission errors may occur, both due to the wrong direction of the current flowing in the primary/secondary of the ammeter transformer being connected.
Useful information 39 selected by the instrument depending on the selected VT and CT value; Example 2: it’s necessary to measure both the consumed active power and the generated active power up to 100kW and retransmit it with a signal from –10 to 10V; the module to be used is AO1033 (2x ±10VCC) or AO1057 (1x ±10VCC). The parameters may be set as follows: • VARIA.: WΣ (active system power) • MIN U.: 0,0% corresponds to -10V; the calculation formula is: (100* min.
40 Useful information • MIN U.: 0,0% • MAX U.: 100% • MIN IN: C 0,000; the values entered with a negative sign correspond to C, those entered with a positive sign correspond to L; • MAX IN: L 0,001; the values entered with a negative sign correspond to C, those entered with a positive sign correspond to L; we have chosen to limit “0,001” as minimum value to be set for L , in order to avoid any undesired oscillation of the outputs.
41 Useful information ■ What is ASY The ASY variable allows to control the symmetry of the star / delta voltages (for systems without neutrals) and star voltages (for systems with neutral). The variable is calculated as follows: where the first formula is to be applied with delta systems, while the minimum value calculated between the two is to be used for the star systems. It’s very important, as a general rule, to plug in and extract the optional modules only when the instrument is switched off.
42 Useful information The configuration shown in the tables above is only valid for connections to 3-phase systems with neutral. In case of any other system, the type and quantity of the displayed variables will vary. Removal of the modules 38 43 ▲ ▲ Analogue outputs 37 44 877) 268-3700 · www.carlogavazzisales.
43 Useful information List of the available variables: V L1 An VA L3 THDll V2 THD A3 V L2 W L1 VA∑ THDI V2 THDII A3 THDI A3 V L3 W L2 PF L1 THD V3 VL-N∑ W L3 PF L 2 THDll V3 An dmd V L1-2 W∑ PF L3 THDl V3 VA dmd V L2-3 var L1 PF ∑ THD A1 PF avg V L3-1 var L2 Hz THDll A1 W dmd V∑ var L3 THD V1 THDl A1 ASY A L1 var ∑ THDll V1 THD A2 A L2 VA L1 THDl V1 THDll A2 A L3 VA L2 THD V2 THDl A2 The availability of the variables depends on the type of electrical syste
44 Installation For a correct mounting of the instrument, insert the modules in the relevant slots, then, at the end, enter the central module, which can be a blind type module or an RS232communication module. The central module will help fixing also the other modules in the relevant slots. To remove the modules use a screwdriver as shown in the picture below: Gently depress the two fixing tabs. Direction 1-4. 1 3 2 Remove the central module from its slot: press your thumb towards points 2-5.
45 Installation ❑ Overall dimensions and panel cut-out ❑ Mounting Insert the instrument (holding its front) and fasten it (from the back) by fixing the two lateral brackets (1) (supplied with the instrument) to the appropriate location (2), using the two screws (3) supplied with the instrument. 2 1 3 Installation ▲ Power supply modules 44 51 ▲ 43 49 877) 268-3700 · www.carlogavazzisales.
46 Installation ■ Position of the slots and relevant modules A B C D PU PS IM ■ Available modules ❑ Analogue output modules AO1050 AO1051 AO1052 AO1053 AO1054 AO1055 AO1056 AO1057 Single output (20mADC) (10VDC) (±5mADC) (±10mADC) (±20mADC) (±1VDC) (±5VDC) (±10VDC) Other modules 44 51 ▲ ▲ What is ASY? 41 48 877) 268-3700 · www.carlogavazzisales.
47 Installation DESCRIPTION A B Single analog output ✔ ✔ Dual analog output ✔ ✔ C D PU PS IM ✔ RS485 serial output ✔ RS232 serial output Single relay output ✔ ✔ Dual relay output ✔ ✔ Single open collector output ✔ ✔ Dual open collector output ✔ ✔ ✔ 4 open collector outputs ✔ Digital inputs ✔ Power supply ✔ Inputs AO1026 AO1027 AO1028 AO1029 AO1030 AO1031 AO1032 AO1033 (20mADC) (10VDC) (±5mADC) (±10mADC) (±20mADC) (±1VDC) (±5VDC) (±10VDC) Dual output Serial connections
48 Installation ❑ Digital output modules AO1058 Single relay output AO1035 Dual relay output AO1059 Single open collector output AO1036 Dual open collector output ❑ Other input/output modules AO1037 4 open collector outputs AQ1038 3 digital inputs AR1034 RS485 Serial output AR1039 RS232 + RTC output Digital input connections 44 51 ▲ ▲ Installation 43 50 877) 268-3700 · www.carlogavazzisales.
Installation 49 ❑ Power supply modules AP1020 90 - 260 VAC/DC power supply AP1021 18 - 60 VAC/DC power supply ■ Connection of optional modules ❑ mA/V single analogue outputs ❑ mA/V dual analogue outputs Three-phase connections 44 51 ▲ ▲ Modules 47 54 877) 268-3700 · www.carlogavazzisales.
50 Installation ❑ Single and double relay outputs ❑ Open collector outputs This diagram is valid also for the open collector modules with a lower number of outputs. The value of the load resistances (Rc) must be chosen so that the short-circuit current is lower than 100mA; the VDC voltage must be lower than or equal to 30VDC. ❑ Digital inputs Three- phase connection 44 51 ▲ ▲ Mounting 45 52 877) 268-3700 · www.carlogavazzisales.
Installation 51 ❑ RS485 Serial outputs 4-wire connection. Additional devices provided with RS485 (that is RS 1, 2,3 ...N) are connected in parallel. 2-wire connection. Additional devices provided with RS485 (that is RS 1,2,3,...N) are connected in parallel. The termination of the serial output is carried out only on the last instrument of the network, by means of a jumper between (Rx+) and (T). 44 Single-phase connection 51 ▲ ▲ Power supply modules 49 55 877) 268-3700 · www.carlogavazzisales.
52 Electrical diagrams ■ Electrical connection diagrams ❑ Three-phase connections, Balanced load Direct connection (3-wire system) CT connection (3-wire system) CT and VT connection (3-wire system) 3/4-wire three phase 55 ▲ ▲ Modules 47 Direct connection (4-wire connection) 54 877) 268-3700 · www.carlogavazzisales.
Electrical diagrams 53 ❑ Three phase, Balanced load CT connections (4-wire system) CT and VT connections (4-wire system) ❑ Three-phase, 4 wires - Unbalanced CT connection (4-wire system) Direct connection (4-wire system) Additional errors 52 55 ▲ ▲ Serial connection 51 load 57 877) 268-3700 · www.carlogavazzisales.
54 Electrical diagrams ❑ 3/4-wire three-phase connections, Unbalanced load CT and VT connection (4-wire system) CT and VT connection (3-wire system) ❑ 3-phase / 3-wires ARON connection Unbalanced load CT connection (3-wire system) CT and VT connection (3-wire system) 52 Technical characteristics 55 ▲ ▲ Power supply modules 49 56 877) 268-3700 · www.carlogavazzisales.
Electrical diagrams ❑ 3-phase / 3-wires conn. 3 CT and 3 VT connection (3-wire system) 55 ❑ Single-phase conn. Direct connection ❑ Single-phase connection CT connection CT and VT connections Serial output 52 ▲ ▲ Three-phase connections 53 59 877) 268-3700 · www.carlogavazzisales.
56 Technical features ■ General features • • • • • • • • • • Modular housing for Plug and Play modules IP65 protection degree 32-bit µ-processor based indicator and controller TRMS measurements Back-lighted graphic LCD display (128 x 64 dots) 4 x 4 dgt read-out (instantaneous variables) 4 x 9 dgt read-out (total energies), 4 x 6 dgt (partial energies) 4 independent total energy meters (Wh, varh) Up to 48 independent partial energy meters (Wh,varh) Harmonic analysis up to the 50th harmonic with histogram
Technical features 57 • Reactive power (@25°C ±5°C, R.H. ≤60% non-condensing): ±0.5% (rdg + f.s.) (cosϕ 0.5 L/C, 0.1 to 1.2 In, range AV5) or ±1% rdg (cosϕ 0.5 L/C, 0.1 to 1.2 In, range AV5). • Apparent power (@25°C ±5°C, R.H. ≤60% non-condensing): ±0.5% (rdg + f.s.) (0.1 to 1.2 In, range AV5) or ±1% rdg (0.1 to 1.2 In, range AV5). • Energies (@25°C ±5°C, R.H. ≤60% non-condensing): class 1 according to EN61036 and EN61268. Ib: 5A, Imax: 6A, 0.
58 Technical features RANGE (IMPEDANCE): • AV5: 58V/100V (>500kΩ) - 1ADC (≤0.3VA) 58V/100V (>500kΩ) - 5ADC (≤0.3VA) 240V/415V (>500kΩ) - 1ADC (≤0.3VA) 240V/415V (>500kΩ) - 5ADC (≤0.3VA) • AV7: 100/170V (>500kΩ) - 1ADC (0.3VA) 110/170V (>500kΩ) - 5ADC (0.3VA) 400/690V (>500kΩ) - 1ADC (0.3VA) 400/690V (>500kΩ) - 5ADC (0.
Technical features 59 0 to ±10mADC, 0 to ±5mADC, 0 to 10VDC, 0 to ±10VDC, 0 to ±5VDC, 0 to ±1VDC.
60 Technical features • Stored energy (EEPROM): max 999.999.999 kWh/kvarh • Data format: 1 start bit, 8 data bit, no parity/even parity/odd parity, 1 stop bit • Baud-rate: 1200, 2400, 4800 and 9600 baud, • Insulation: by means of optocouplers, 4000 Vrms between output and measuring inputs, 4000 Vrms between output and power supply inputs RS232 SERIAL OUTPUT (on request): • Type: bidirectional (static and dynamic variables).
Technical features 61 ALARMS: (on request) • Number of outputs: up to four, independent • Alarm type: up alarm, down alarm, up alarm with latch, down alarm with latch, phase asymmetry, phase loss, neutral loss. • Set-point adjustment: 0 to 100% of the electrical scale • Hysteresis: 0 to 100% of the electrical scale • On time delay: 0 to 255s • Relay status: selectable, normally close or normally open. • Output type: relay, SPDT; AC 1-8A, 250VAC; DC 12-5A, 24VDC; AC 15-2.5A, 250VAC; DC 13-2.5A, 24VDC.
62 Technical features DIGITAL FILTER: • Operating range: 0 to 99.9% of the input scale • Filtering coefficient: 1 to 255 • Filter action: alarms, serial and analogue outputs (fundamental variables: V, A, W and their derived ones). EVENT LOGGING: only with the module RS232+RTC module. The max./min. values of the selected variables and the alarm status are stored with reference to date (dd:mm:yy) and time (hh:mm:ss). Max. capacity: 480 events.
Technical features 63 HARMONIC DETAILS For each THD page, it’s possible to see the order of the harmonics. DISPLAY PAGES The harmonic content is displayed as a graph showing the whole harmonic spectrum. The information is given also as numerical data: THD in % / RMS value THD odd in % / RMS value THD even in %/ RMS value OTHERS The harmonic distortion can be measured both in 3-wire or 4wire systems. Tw: 0.02s ■ Energy management TIME PERIODS: Selectable: single time, dual time and multitime.
64 Technical features ■ Power supply specifications AC VOLTAGE: 18 - 60 VDC/AC (on request); 90 - 260 VDC/AC (standard) POWER CONSUMPTION: ≤30VA / 12W (90-260V); ≤20VA / 12W (18-60V) ■ General specifications OPERATING TEMPERATURE: from 0 to +50°C (R.H. <90% non-condensing) STORAGE TEMPERATURE: from -10 to +60°C (R.H.<90% non-condensing).
