User manual CARLO GAVAZZI WM23-96 PROGRAMMING

[. . . ] Go to the page where the subject written on the top of the current page starts. Go to the page where the subject written on the top of the current page ends. v v This symbol indicates a particularly important subject or information. This symbol indicates that more details are given on the current subject. Main menu v 2 7 v 4 To begin with Back-lighted LCD Display. Display previous page. s Frontal Panel Description Display next page. Access to programming or setting confirmation. s List and Description of Displayed Measuring Pages VL1-N VL2-N V VL3-N v w kW PF Hz kvar v w kW PF Hz kVA v w Measuring pages v v 6 To begin with MW Max Max v w 5 PF Min Min kW dmd kVA dmd v w Serial communication status: r=Rx; t=Tx (only with serial comm. [. . . ] Select the value of the variable by means of the v and w keys and confirm with S ; Set-oFF: deactivation set-point, value of the variable over which the alarm is deactivated. Select the value of the variable by means of the v and w keys and confirm it with S ; nd: normally de-energized output when there is no alarm. Select the output status by means of the v and w keys and confirm it with S ; SEC: delay time at the activation of the alarm output. Choose the value of the delay time in seconds by means of the v and w keys (up to 255 seconds) and confirm with S . S v 1. 2. . By increasing the value both the stability and the settling time of the measurements are increased. See also "Example 2" in Useful Information on page 19. s End of programming S Use it to exit from programming and go back to the measuring mode. Select "End" from the main menu by means of the w and v keys, conInstrument firm it with S . revision To measuring mode Synchronization Useful information v 11 7 17 18 v Programming s Reset of min values 17 Select "rESEt MI" from the main menu by means of the v w keys, S S then confirm with S . When the instrument asks for the reset, choose, by means of the v w keys: "no MI" to avoid the reset or "YES MI" to confirm it. Then, press S to carry out the command. S vw RESET s Reset of max values S Select "rESEt MA" from the main menu by means of the v w keys, S then confirm with S . When the instrument asks for the reset, choose, by means of the v w keys: "no MA" to avoid the reset or "yes MA" to confirm it. Then, press S to carry out the command. S vw RESET Serial port Up/down alarm v 15 7 21 v 18 Useful Information It is possible to prevent any access to programming by keypad by modifying the selector under the power supply slot (see the drawing on the left), or closing the contact number 1 of the digital input module, when present. s How to prevent the programming by key-pad Selector: turn the selector with a little screwdriver. The variables measured by the instrument are correct if the polarities of the inputs have been observed (as shown in the figure below); if not, measuring and retransmission errors may occur due to the wrong direction of the current flowing in the primary / secondary of the connected current transformer. s Setting Examples Example 1 "Analogue output": take the measure of a power consumed up to 100kW, and retransmit it with a signal from 4 to 20 mA; the module to be used is AO1050 or AO1026 (single or dual output from 0 to 20mA), the instrument must be set as follows: · VAr: (variable), W (system active power) · LoE: (minimum electrical scale) 0. 0 K; the K and M mulDigital outputs What's ASY v 13 21 20 v Useful Information 19 tiples are automatically selected by the instrument according to the selected VT and CT values; · HiE: (maximum electrical scale) 100. 0 K; the K and M multiples are automatically selected by the instrument according to the selected VT and CT values; · LoA: (minimum electrical scale of the analogue output) 20. 0% for 4mA, the calculation to be carried out is: (minimum output value/ full scale output value)*100 = (4mA/20mA)*100 = 20% · HiA: (maximum electrical scale of the analogue output) 100. 0% for 20mA, the calculation to be carried out is: (maximum output value / full scale output value)*100 = (20mA/20mA)*100 =100% Example 2 "Use of digital filter": it's necessary to stabilize the displayed value of the VL1-N variable that varies between 222V and 228V. The parameters of the digital filter are to be set as follows: · rnG: the variable varies within the average value, the amplitude of which is equal to ±1. 3% of the variable's rated value, calculated as follows: (228-222)/2=±3V, then ±3*100/231V=±1. 3% where 231V is the phase-neutral rated value of a 400V input range). The "range" parameter, that corresponds to the action range of the digital filter, is set at a value which is slightly higher than the percentage amplitude of the fluctuation: e. g. · CoE: if the new value acquired by the instrument is within the filter's action range, then the new displayed value is calculated by summing algebraically to the previous value the variation divided by the filtering coefficient. As a consequence, a value which is higher than this coefficient implies a longer settling time and therefore improves the stability. The latter can also be improved by increasing the filtering coefficient: the admitted values are within 1 and 16. Enter the value in consecutive attempts until you reach the desired stability. Reset min and max values Mounting v 17 18 21 23 v 20 Useful Information s What is ASY The ASY variable allows the user to control the symmetry of the delta voltages (for systems without neutral) and star voltages (for systems with neutral). The variable is calculated according to the following formula: ASY= Where: Vmax - Vmin Vavg *100 Vmax is the max. value among VL1-N, VL2-N, VL3-N Vavg is the average: (VL1-N, VL2-N, VL3-N)/3 The variable is not displayed by the instrument, but it can be retransmitted by the analogue or RS422 / 485 output and can be controlled by means of the alarm. s Retransmitted Variables N° 1 2 3 4 5 6 7 8 9 10 11 12 13 Variable Three-phase Three-phase Note with neutral without neutral V L-N x = system V L-L x x = system W x x = system var x x = system VA x x = system PF x x = system THD V x x if FFT activated THD A x x if FFT activated An x VA dmd x x W dmd x x ASY x x asymmetry All the instantaneous variables (powers, currents, voltages) Installation Serial port v 15 18 21 21 v Useful Information s Alarm digital output 21 The activation of the alarm can be UP or DOWN depending on how the ON and OFF parameters have been set, as per the following table: ON-OFF VALUES STATUS ON OFF ON < OFF ALARM TYPE UP DOWN s Displaying of programming menu It may be useful to know that the menus displayed by the instrument depend on its configuration; e. g. : the instrument will not display the menu relevant to the digital outputs if the optional module is not inserted. IT IS IMPORTANT that the instrument is switched off when you plug-in or disconnect the modules. Setting examples Modules available v 19 18 25 v 22 Installation s Preliminary operations Before switching the instrument on, make sure that the power supply voltage corresponds to what is shown on the side label of the relevant module. s Before mounting the modules To know in which slot every module is to be mounted, refer to the figure on page 24. [. . . ] < 90% non condensing) Storage temperature: -10 to +60°C (14 to 140°F) (R. H. III (IEC 664) Key-pad lock: by means of selector placed behind the display or by means of contact (in case of presence of the module 3 input contacts) Insulation: 4000 VRMS between all inputs/outputs to ground Dielectric strength: 4000 VRMS for 1 minute EMC Emissions: EN50082-1 (class A) residential, commercial and light industry environment Immunity: EN 61000-6-2 (class A) industrial environment Other standards Safety: IEC 61010-1, EN 61010-1 Single Phase Connections User's page v 35 32 37 38 v Technical Features 37 Product: IEC 60688-1, EN 60688-1 Approvals: CE Connections 5(6)A: Screw-type, max 2. 5 mm2 wires (2 x 1. 5mm2) Housing Dimensions: 96x96x140 mm Material: ABS, NORYL, PC (front) self-extinguishing: UL 94 V-0 Protection degree: Front: IP65; Connections: IP20 Weight: Approx. 400 g (packing incl. ) Nota: Some pictures have been digitally modified and may not correspond to the instrument in all its details. Software functions v 35 v 32 38 User's Page Name: . . Harmonic analysis v 35 v OUR SALES NETWORK Carlo Gavazzi GmbH Wien - AUSTRIA Carlo Gavazzi NV/SA Vilvoorde - BELGIUM Carlo Gavazzi Inc. [. . . ]