Virtual Instruments in LabVIEW
for SCADA systems, Factory automation, Laboratory
tests and PC based test equipments.
Here are Virtual Instruments and Supervisory Control & Data Acquisition Systems.
Most of these are
PC /
PAC based
SCADA
systems for industrial control & automation. Others are for automated,
multi-parametric laboratory tests. Most are developed & deployed using
LabVIEW.
This PC based VI is a measurement
instrument for
plotting the
Time v/s Current characteristics of a circuit breaker as discussed
in IEC 60898, UL
508 and various other standards.
The VI is designed in LabVIEW primarily for
use by design engineers to optimize the design of circuit breakers at test
laboratories as well as for certification purpose by assessment agencies.
The VI runs on a standard PC and uses an
electrical test setup for circuit breakers made by
SCR ELEKTRONIKS. This VI is completely designed in LabVIEW
and and can check all curves of the circuit breaker.
Thermal-trip test sequence in the time current characteristics' plotting
process is shown in the above VI
This PC based VI is a production test
equipment for
Thermal Calibration & test of MCCB as discussed
in IEC 60947, UL
508 and various other standards.
The VI is designed for
use by manufacturers of Molded Case Circuit Breakers.
The VI utilizes a customised test bench
and associates every breaker with a barcode for life-time traceability. It
controls test current & other parameters, conducts simultaneous tests on
multiple breakers and executes multiple test sequences automatically as
programmed by the supervisor.
This VI provides for user management with multi-level security.
Main menu of the
Test Bench for Test, Measurement & Calibration
VI to generate production reports
(sample screen) is shown above.
This PC based VI is a production test
equipment for Short-circuit trip test of MCCB as discussed
in IEC 60947, UL
508 and various other standards.
The VI is designed for
use by manufacturers of Molded Case Circuit Breakers.
The VI utilizes a customised test bench
and associates every breaker with a barcode for life-time traceability. It
controls short-time high current & other parameters, conducts simultaneous tests on
multiple breakers and executes multiple test sequences automatically as
programmed by the supervisor.
As per the user's pre-selection, the production testing is performed with
associated test parameters to the breaker's catalog. The test sequence is
programmed in the
VI.
Although the
VI is designed for
production test to be used by manufacturers and
OEMs,
it can be used for quality control purpose at test laboratory or sample type
test in factory with more rigorous test sequence and additional parameters.
Automating the entire test sequence drastically reduces time of the test
process.
Calibration process of high current source is shown above.
This SCADA is designed to conduct thermal calibration of multiple Molded Case Circuit
Breakers of same or different ratings simultaneously by a single operator. The HMI
is designed to accomodate expansion of the test system, as and when required. The
control system VI,
that works with each current source & corresonding measurement devices, is
controlled using the HMI thus providing
the operator to conduct simultaneous thermal calibration of circuit breakers on
a single test bench!
HMI of the
SCADA
is seen above.
The
SCADA helps the
calibration of current source & measurement devices.
This PC based SCADA enable quality &
performance testing as normally required by quality control department,
assessment agencies & certification bodies.
The software eliminates the labor of
setting parameters for testing devices, generating reports & other meticulous
tasks that the quality engineers otherwise have to manually work for each test job.
The above screen is the general look & feel of the SCADA for Quality Test.
There's an energy saver-mode that puts the test bench in stand-by, all
devices off & screen blackened to save energy.
SCADA guides the operator to do the appropriate on-bench connections for
each Quality Test.
Once the connections are done, the SCADA calls the appropriate VI
and picks up the corresponding quality test parameters from the test
database. The above
VI performs insulation resistance test.
The above VI performs the hipot test.
For each quality test, the control & measurement devices are selected & fed the
programmed parameters first and then the test is conducted automatically.
This helps to achieve user safety, lesser fatigue and speed. The above VI
conducts power factor & on-load test on a ballast and measures the Total
Harmonic Distortion and other set measurements.
Test laboratories and quality controllers often enforce report format to
print & view test results. The below are extracts of report format for luminary
test by a leading manufacturer. The SCADA has a dedicated
module that generates reports in the desired format directly.
The above is a programmed template that eliminates the need to make reports
manually after the test results are obtained.
Electrical Safety testing is the most widely implemented test process
world-wide; being a mandatory assessment in most countries enforcing safety
standards such as CEI 60335
for all devices that utilise electricity.
This PC based VI
automates the electrical safety test, using a
SCR ELEKTRONIKS make
Safety Test Equipment.
This VI is completely designed in LabVIEW
and runs on a standard PC with Windows or Linux.
Similarly, these virtual instruments
are tailored for Automatic Test Equipments for
LED based Luminary,
Luminary LED Assembly &
Luminary Driver.
The above VI is a login to the
secure TestWare.
The above is the VI for conducting tests on an assembly line of LED Luminaries.
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