Summary of Contents for MARS-ENERGO Energoforma 3.3
- Page 1 OKP 43 4531 Three-phase Programmable Waveform Generator Energoforma 3.3 User's Manual Edition 9 МС2.211.001 UM 2015...
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Page 2: Table Of Contents
MARS-ENERGO CONTENTS INTRODUCTION....................3 1. SAFETY REQUIREMENTS ................3 2. GENERAL INFORMATION AND OPERATION PRINCIPLE ....4 2.1. A ....................4 PPLICATION 2.2. D ....................4 ESCRIPTION 2.3. D ................6 ESIGN AND OPERATION 3. PREPARING FOR OPERATION ..............8 3.1. -
Page 3: Introduction
МС2.211.001 UM Introduction The manual covers Programmable Waveform Generator Energoforma 3.3 (hereinafter re- ferred to as the Generator) and contains the information and instructions for its operation. The aforesaid equipment has been manufactured in compliance with Technical Specifications TS 4345-019-499764972003-2003 and conforms to the Technical Requirements in force. -
Page 4: General Information And Operation Principle
MARS-ENERGO 2. General information and operation principle 2.1. Application 2.1.1. Energoforma 3.3 generates single- and three-phase system of current/voltage sig- nals according to a user-specified model that can be used for testing and adjustment of instru- ments that measure: Active, reactive and apparent power/energy;... - Page 5 МС2.211.001 UM 2.2.2. The Generator is provided with three channels for generating voltages (phase volt- ages) as well as with three independent channels for generating currents. There are two ways for the user to specify a signal model in digital form: By selecting one of standard signals from the device's internal memory or specifying signal parameters (for a specific signal) using the built-in keyboard;...
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Page 6: Design And Operation
MARS-ENERGO 2.3. Design and operation 2.3.1. Block diagram of the Generator is shown in Fig. 2.2. Fig. 2.2. Block diagram 2.3.2. At the hart of the Generator are a Texas Instruments signal processor and FPGA from Xilinx. Such a solution makes possible prompt upgrading of Generator’s firmware, keep- ing its hardware intact. - Page 7 МС2.211.001 UM the parameters of signals to be generated (waveform, amplitude, phase shifts for currents and voltages) etc. 2.3.3. The Power Supply unit generates voltages +5V, +3.3V, and +1.6V for the Central Processor Board and +5V (independent power supply) for RS-232 port. It also contains a cir- cuit that keeps output signals synchronized with power supply network (synchronization signal represented as a 50x2048Hz meander comes to the Central Processor board).
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Page 8: Preparing For Operation
MARS-ENERGO 3. Preparing for operation 3.1. Operating restrictions If the Generator has been moved from a cold environment (with ambient temperature be- low 20°C) into a warm one, it shall be left to stand for at least 4 hours at room temperature before applying power, to make sure that no condensation remains inside. - Page 9 МС2.211.001 UM Fig. 3.1. “Power up” screen Pressing any key will bring up the main menu (see Fig. 4.1). To set the Generator for stable operation, it shall be kept powered for at least 30 minutes.
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Page 10: Operation Procedure
MARS-ENERGO 4. Operation procedure Energoforma 3.3 three-phase programmable waveform generator operates in two modes: Controlled from a PC via RS-232 running “Energoform” program; Controlled from its membrane keyboard. 4.1. PC-controlled mode To operate the Generator in the on-line mode, “Energoform” software package shall be installed on a PC. - Page 11 МС2.211.001 UM Table 4.1 Functions of the keys Name and Function “0”, ..., “9” Numeric keypad: Press to type in numeric values of the field currently active - Decimal point: press this key before entering the desired magnitude of a fractional part;...
- Page 12 MARS-ENERGO The parameter setting windows (hereinafter referred to as “the windows”) graphically and/or textually display various parameters of the signal produced by the Generator. Each win- dow has one or more modifiable fields in it (“the fields”). When there are several fields in the window, keys can be used to skip from field to field.
- Page 13 МС2.211.001 UM The meaning of each icon is described below (from right to left): “Generation” mode: — generation of output signals is turned on at the moment. — generation of output signals is turned off, and the outputs have zero potentials. To change the mode, select the corresponding icon and press “ENT”.
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Page 14: Standard Signal" Mode
MARS-ENERGO 4.2.2. “Standard signal” mode The mode makes Generator produce pure sine waveforms on its outputs. Angles between phase voltages are set to 120°. You can use the window shown in Fig. 4.5 to specify: Fundamental (1st harmonic) frequency — from 42.50 to 70.00Hz in 0.01Hz steps;... - Page 15 МС2.211.001 UM 4.2.3.1. “Programmed waveform” menu This option (Fig. 4.7) makes it possible to set signals on Generator outputs to any desired parameter values (within permissible limits established for each parameter): Frequency; Phase angles; Wave shape; RMS values. Additionally, the “Interharmonics” mode is turned on/off here. Fig.
- Page 16 MARS-ENERGO Fig. 4.9. Parameter setting window for phase angles Six modifiable fields of the above window correspond to various angles, as applied to the ° first harmonics of signals to be generated. The fields are modified within the range of –179.99 °...
- Page 17 МС2.211.001 UM amplitude ratio of the harmonic (“U ” or “I ” field, the value is set as a percentage of the 1st harmonic): “Interharmonics” mode is off. Values are set within the range of 0 to 100.00 % in 0.01 % increments.
- Page 18 MARS-ENERGO Fig. 4.13. “Harmonics Phase Shift” window with spectrum of phase shift angles “Linear spectrum”, “Logarithmic spectrum” and “Harmonics phase shift” windows con- tain 2 editable fields: number of the harmonic selected (“n”, setting is made with keys, which makes the cursor move to the spectral line corresponding to the harmonic selected;...
- Page 19 МС2.211.001 UM 4.2.3.2. “Subharmonics” mode In the “Subharmonics” mode, it is possible to set parameters for signals on Generator’s current outputs I . One period of such a signal is outlined on the diagram (Fig 4.15). Fig. 4.15. Shape of a signal generated in “Subharmonics” mode (with period T) You can use the window pictured on Fig.
- Page 20 MARS-ENERGO You can use the window pictured on Fig. 4.18 to specify: fundamental frequency (i.e. the frequency of the first harmonic); phase shift between current and voltage, one and the same for each phase; current and voltage values. Checkboxes below I allow you to toggle switches that you can use to set off (zero) phase currents as desired.
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Page 21: Settings Menu
МС2.211.001 UM 4.2.3.5. Flicker Mode In the “Flicker” mode, meander-like changes in voltage are maintained on Generator out- puts. These fluctuations depend on the settings in the window (see the table below): Relative change in voltage Number of variations Number ΔU/U, % per minute 2.720... -
Page 22: Signal Library Menu
MARS-ENERGO 4.2.4.1. RS-232 Speed By enabling “Settings” item in the main menu you open the window where you can spec- ify the desired characteristic of RS-232 interface (Fig. 4.22). The Device can support data transfer to/from a PC via RS-232 interface at a speed of 115 200, 38 400, 19 200, and 9600bit/s. - Page 23 МС2.211.001 UM occupies two pages pictured below. Use keys to turn them over, and , keys to select a library name. Fig. 4.25. “Select library” submenu (pages 1 and 2) By enabling a library you open its submenu named “Select signal” that lists the names of 10 signals stored in that library (Fig.
- Page 24 MARS-ENERGO The signal name must contain 20 characters or less. keys to select a character on the screen keyboard. Press “ENT” to enter a character of a new signal name. If you select “DELETE” on-screen option with keys, and then press “ENT”, the last character will be deleted.
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