MARS-ENERGO Energoforma 3.3 User manual

OKP 43 4531
Three-phase Programmable
Waveform Generator
Energoforma 3.3
User's Manual
Edition 9
МС2.211.001 UM
2015

MARS-ENERGO
CONTENTS
INTRODUCTION.................................................................................................3
1. SAFETY REQUIREMENTS...........................................................................3
2. GENERAL INFORMATION AND OPERATION PRINCIPLE................4
2.1. APPLICATION.................................................................................................4
2.2. DESCRIPTION................................................................................................. 4
2.3. DESIGN AND OPERATION................................................................................6
3. PREPARING FOR OPERATION..................................................................8
3.1. OPERATING RESTRICTIONS.............................................................................8
3.2. UNPACKING...................................................................................................8
3.3. TURNING ON ..................................................................................................8
4. OPERATION PROCEDURE........................................................................10
4.1. PC-CONTROLLED MODE...............................................................................10
4.2. OFF-LINE MODE (CONTROL FROM MEMBRANE KEYBOARD)..........................10
4.2.1. Operator interface....................................................................................................10
4.2.2. “Standard signal” mode ...........................................................................................14
4.2.3. “Special signals” menu............................................................................................14
4.2.4. Settings menu...........................................................................................................21
4.2.5. Signal Library Menu................................................................................................22
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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.
1. Safety requirements
1.1. When putting the Generator into operation and during operation, “Interbranch Rules
for Labor Safety When Operating Electrical Systems” must be observed.
The symbol
!
on the Generator's panel is intended to alert the user to the presence of important operating in-
structions. See “Warning” and “Caution” clauses in section 3.3 “Turning on”.
1.2. The Generator provides electrical safety according to Russian Standard (GOST) R
51350.
1.3. The Generator provides electrical shock protection according to Russian Standard
(GOST) R 51350-99 that corresponds to IEC 61010-1 (Category I).
1.4. Protection provided by the enclosure is per Russian Standard (GOST) 14254–96 —
IP20, Mounting Category II, pollution grade 2.
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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;
Power quality parameters as per 61000-4-30 power quality measurement stan-
dard (classes A, S and B) including harmonics (up to 50th) and interharmonics;
RMS of currents and voltages within commercial frequency range.
2.1.2. The sphere of application includes mobile calibration (testing) laboratories and me-
ter/transformer test systems where the Generator is used together with reference meters, e.g.
Energomonitor 3.1K or Energomonitor 3.3T1.
2.2. Description
2.2.1. The generator is supplied as a self-contained hand-held module. The Generator's
front panel is shown in Fig. 2.1.
Fig. 2.1. Front panel
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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;
By selecting a signal from the Library of standard signals stored on a PC and recording
it into the Generator via RS-232 interface running the “Energoform” software;
By specifying signal parameters manually from the built-in keyboard.
Waveforms and signal parameters are viewed either on the built-in graphic LCD or PC
via “Energoform” software.
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2.3. Design and operation
2.3.1. Block diagram of the Generator is shown in Fig. 2.2.
UN
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.
The Generator employs 16-bit Digital-to-Analog Conversion (DAC). The DAC block has
six identical channels in it. They operate independently, each converting 16-bit binary input
data into analog form. 2048 points are produced every 20 milliseconds, which gives 2048 sam-
ples per period at 50Hz frequency. The DAC board produces 6 analog signals: 3 currents and
3 voltages. The current signals are galvanically isolated from each other and from other cir-
cuits, and the voltage signals are galvanically isolated from other circuits and connected by a
common wire.
The Central Processor board exercises full control over the Generator.
It produces the arrays of samples (representing point by point each of the six wave-
forms).
The array data are fed into the DAC board and converted into 3 current and 3 voltage
curves. Conversion results are stored in non-volatile memory and displayed on LCD
screen.
The Central Processor board is responsible for:
keeping of time and marking of intervals as per real-time clock;
supporting of data exchange with external devices (PCs);
receiving of data and commands from operator’s keyboard.
The keyboard is mounted on the front panel and connected to the Central Processor
board. Operator uses the keyboard to specify how the information should be displayed, to enter
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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).
2.3.4. Analogue current and voltage signals are taken out of the DAC board and applied
to the outputs of current and voltage amplifiers respectively.
To provide short circuit protection, a 0.25A fuse is mounted on the output of each voltage
channel.
Output ranges of the current and voltage amplifiers are processor-controlled. The proces-
sor transmits its commands to select a current or voltage output range to the relays. Ranges of
the amplifiers are also operated by commands coming from the processor.
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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.
Caution! The Generator shall not be used under the ingress of moisture inside its body.
Caution! Current outputs not connected to a load must be short circuited (they must not
be left without a load).
3.2. Unpacking
Check that the delivery package contains all parts specified in the Supply Agreement.
Check that the manufacturer’s seal is intact. Should anything in the package be found dam-
aged, contact the supplier immediately.
The delivery package is specified in Table 2.1 of the Equipment Certificate
(MS2.211.001 PS).
3.3. Turning on
Caution! To avoid electric shock, it is strongly recommended to connect (disconnect) the
Device to the measured circuits when they are de-energized. Otherwise, connection (discon-
nection) to the measured circuits shall be carried out by qualified service personnel in compli-
ance with local safety regulations in force.
The Generator's voltage circuits have 6 terminals (UA, UB, UC) for connection to phase
voltages (and neutral); six terminals are provided for phase currents (IA, IB, IC). Current circuits
are galvanically isolated from each other and from voltage circuits. The voltage circuits are
symmetrical and have one common point (neutral conductor). All connections to measured
circuits are made via terminals located on Generator's front panel (see Fig. 2.1).
Caution! Inspect the cables. Ensure all joints are made properly to avoid overheating and
excessively high resistance.
Power the Generator from mains in the following order:
1) Connect the Generator to the device under test and reference device;
2) Plug the mains cable of the device under test and reference device to mains socket;
3) Turn on the Generator.
Caution! Before turning the Generator on, make sure that its current outputs are short
circuited (short-circuit straps are placed) or a device with the input impedance below
0.3MOhm has been connected to the Generator.
The Generator performs warm-up and initialization procedures as it is turned on. At the
conclusion of the procedure, the “power up” screen (Fig. 3.1) appears. It shows manufacturer’s
name and logo, Generator’s type and its firmware version.
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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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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. The “Energoform” software works under operation systems MS Windows
98, 2000, XP, Vista and Windows 7 (32- or 64-bit architecture) supporting the Cyrillic alpha-
bet. When working in “Energoform” program, it is recommended to use the Generator to-
gether with Energomonitor 3.3T1 (or Energomonitor 3.1K) reference instrument.
The following PC configuration is recommended for proper functioning of the program:
Processor: Pentium III at 500MHz or more powerful;
At least 64Mb RAM;
At least 3Mb of disc space to install the program;
Video adapter of 1024x768 resolution;
CD drive for software installation;
Mouse or compatible pointing device;
Two free COM-ports (RS-232).
For a more convenient work with large volumes of data a more powerful computer may
be requisite.
To make the program run properly, connect serial ports of the PC to RS-232 ports of the
Generator and Energomonitor 3.3T1 (Energomonitor 3.1K) reference instrument.
On starting “Energoform” program, the Generator automatically goes to the PC-
controlled mode.
For how to work with the Energomonitor 3.3T1 (or Energomonitor 3.1K) instruments,
see the user manual for the corresponding instrument.
For how to work with “Energoform” program, see “Energoform program, User's Manual”
document.
4.2. Off-line mode (control from membrane keyboard)
In the off-line mode, the Generator is operated via its membrane keyboard.
For how to work with the Energomonitor 3.3T1 (or Energomonitor 3.1K), see the user
manual for the corresponding instrument.
Operation of the Generator in the off-line mode is described below.
4.2.1. Operator interface
Operator interface of the Generator includes an 18-button membrane keyboard and
graphic 240x128 dot matrix Liquid Crystal Display (LCD). The interface makes it possible to
select operation modes and configure signal parameters. Table 4.1 describes the keys located
on the front panel.
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