Atec MX User Manual
California Instruments MX Series II
www.tti.co.uk
Tel: 01480 412451
15–135 kVA
Overview
• High Power AC and DC Power Source
Programmable AC and DC power for frequency
conversion and product test applications
• Expandable Power Levels
Available output power of 15, 30, and 45 kVA
per unit and multi-unit congurations for power
requirements up to 135 kVA and above
• Single and Three Phase Mode
Phase mode programming on MX30-3Pi and
MX45-3Pi allows switching between single and
three phase output modes
• Arbitrary & Harmonic Waveform
Generation
User dened voltage waveform and
distortion programming
• Multiple Voltage Ranges
Available 150, 300 or 400 Volt ranges in AC mode
and 200 or 400 Volt ranges in DC mode
• High RMS Current
Maximum current of 125 A rms (MX15), 250 A rms
(MX30), and 375 A rms (MX45)
• Remote Control
Standard RS232C & USB along with optional IEEE488 & LAN Interfaces are available for automated
test applications
Introduction
The MX Series consists of multiple high power AC
and DC power systems that provide controlled
AC and DC output for ATE and product test
applications.
This high power AC and DC test system covers a
wide spectrum of AC and DC power applications
at an affordable cost. Using state-of-the-art PWM
switching techniques, the MX series combines
compactness, robustness and functionality in a
compact oor-standing chassis, no larger than
a typical ofce copying machine. This higher
power density has been accomplished without
the need to resort to elaborate cooling schemes
or additional installation wiring. Simply roll the
MX15, MX30, or MX45 unit to its designated
location (using included casters), plug it in, and
the MX series is ready to work for you.
150–400 V
0–375 A / Phase
208 230 400
480
Simple Operation
The MX Series can be operated completely from
its menu driven front panel controller. A backlit
LCD display shows menus, setup data, and
read-back measurements. IEEE-488, RS232C,
USB and LAN remote control interfaces and
instrument drivers for popular ATE programming
environments are available. This allows the MX
Series to be easily integrated into an automated
test system.
For advanced test applications, the programmable
controller version offers full arbitrary waveform
generation, time and frequency domain
measurements, and voltage and
current waveform capture.
Congurations
The MX15 delivers up to 15 kVA of single phase
output. The MX30 delivers up to 30 kVA, and the
MX45 up to 45 kVA. Both operate using single or
three phase output in AC mode. In DC mode, 65
% of the AC power level is available. On MX-P
models, AC+DC mode is also supported.
For higher power requirements, the MX90 and
MX135 models are available. Multi cabinet
MX45 systems always operate in three phase
output mode. Available recongurable MX90
and MX135 models (-MB designation) provide
multiple controllers which allow separation of the
high power system into two or three individual
MX45 units for use in separate applications. This
ability to recongure the system provides an even
greater level of exibility not commonly found in
power systems.
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MX Series II
Product Evaluation and Test
Increasingly, manufacturers of high power
equipment and appliances are required to fully
evaluate and test their products over a wide
range of input line conditions. The built-in output
transient generation and read-back measurement
capability of the MX Series offers the convenience
of a powerful, and easy to use, integrated test
system.
Avionics
With an output frequency range to 819 Hz
(or 1000 Hz with -HF option), the MX Series is
well suited for aerospace applications. Precise
frequency control and accurate load regulation
are key requirements in these applications. The
available IEEE-488 remote control interface
and SCPI command language provide for easy
integration into existing ATE systems. The MX
Series eliminates the need for several additional
pieces of test equipment, saving cost and space.
Instrument drivers for popular programming
environments such as National Instruments
LabView™ are available to speed up system
integration.
Regulatory Testing
As governments are moving to enforce product
quality standards, regulatory compliance testing
is becoming a requirement for a growing number
of manufacturers. The MX Series is designed
to meet AC source requirements for use in
compliance testing such as IEC 61000, 3-2, 3-3,
3-11, 3-12, to name a few.
Choice of voltage ranges
The MX30 and MX45 can be ordered with either
a 150 V RMS Line to Neutral output voltage
range or a 300 V RMS Line to Neutral range. This
provides 3 phase output capability of 260 Vac or
520 Vac line to line respectively. If dual output
ranges are required, the programmable range
change option (-R) provides the ability to switch
between both output ranges. Pi version models
offer standard dual voltage ranges.
The DC output mode changes the 150 V AC
range to a 200 V DC output range; the 300 V AC
range becomes 400 V DC.
For applications requiring more than 300 V
L-N (or 520 V L-L), the optional -HV output
transformer provides an additional 400 V L-N
and 693 V L-L output range for use in AC mode
only.
Multi-Box Congurations
For high power applications, two or three
MX45 chassis can be combined to provide 90
to 135 kVA of three phase power. MX90 and
MX135 systems are always congured for three
phase operation. Contact sales for custom
congurations.
High Crest Factor
With a crest factor of up to 3.6, the MX Series
AC source can drive difcult nonlinear loads with
ease. Since many modern products use switching
power supplies, they have a tendency to pull
high repetitive peak currents. The MX30-3Pi can
deliverup to 240 Amps of repetitive peak current
(150 V AC range) per phase to handle three
phase loads. The MX45-3Pi can deliver up to 360
Amps. 720 Amps (MX30), and 1080 Amps (single
phase mode).
Remote Control
Standard RS232C & USB along with optional
IEEE-488 & LAN
programming of all instrument functions from an
external computer. The popular SCPI command
protocol is used for programming.
Application Software
Windows® application software is included with
both versions. This software provides easy access
to the power source’s capabilities without the
need to develop any custom code. The following
functions are available through this GUI program:
• Steady state output control (all parameters)
• Create, run, save, reload and print
transient programs
• Generate and save harmonic waveforms.
[Pi only]
• Generate and save arbitrary waveforms.
[Pi only]
• Measure and log standard measurements
• Capture and display output voltage and
current waveforms. [Pi only]
• Measure, display, print and log harmonic
voltage and current measurements. [Pi only]
• Display IEEE-488, RS232C, USB and LAN bus
trafc to and from the AC Source to help you
develop your own test programs.
1. Requires PC running WindowsXP™ or Windows 2000™.
remote control interfaces allow
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MX Series II
15–135 kVA
Harmonic Waveform Generation
[Pi controller]
Using the latest DSP technology, the MX
Series programmable controller is capable of
generating harmonic waveforms to test for
harmonics susceptibility. The Windows Graphical
User Interface program can be used to dene
harmonic waveforms by specifying amplitude and
phase for up to 50 harmonics. The waveform
data points are generated and downloaded by
the GUI to the AC source through the IEEE-488 or
RS232C bus. Up to 200 waveforms can be stored
in nonvolatile memory and given a user dened
name for easy recall.
All MX-Pi Series congurations offer three phase
waveform generation, allowing independent
phase anomalies to be programmed. It also
allows simulation of unbalanced harmonic line
conditions.
Harmonic waveform, Fund., 3rd, 5th, 7th, 9th,11th and 13th.
Two hundred user dened waveforms.
MX Series - AC and DC Transient Generation
The MX Series controller has a powerful AC
and DC transient generation system that allows
complex sequences of voltage, frequency and
waveshapes to be generated. This further
enhances the MX’s capability to simulate AC line
conditions or DC disturbances. When combined
with the multiphase arbitrary waveform
capabilities, the AC and DC output possibilities
are truly exceptional. Transient generation is
controlled independently yet time synchronized
on all three phases. Accurate phase angle control
and synchronized transient list execution provide
unparalleled accuracy in positioning AC output
events.
Transient programming is easily accomplished
from the front panel where clearly laid out menu’s
guide the user through the transient denition
process.
The front panel provides a convenient listing
of the programmed transient sequence and
allows for transient execution Start, Stop,
Abort and Resume operations. User dened
transient sequences can be saved to non-volatile
memory for instant recall and execution at a
later time. The included Graphical User Interface
program supports transient denitions using
a spreadsheet-like data entry grid. A library
of frequently used transient programs can be
created on disk using this GUI program.
Arbitrary Waveform Generation
Using the provided GUI program or custom
software, the user also has the ability to dene
arbitrary AC waveforms. The arbitrary waveform
method of data entry provides an alternative
method of specifying AC anomalies by providing
specic waveform data points. The GUI program
provides a catalog of custom waveforms and also
allows real-world waveforms captured on a digital
oscilloscope to be downloaded to one of the
many AC source’s waveform memories. Arbitrary
waveform capability is a exible way of simulating
the effect of real-world AC power line conditions
on a unit under test in both engineering and
production environments.
Harmonically distorted waveform.
Transient List Data Entry from the front panel.
Transient List Data Entry in GUI program.
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