MSD System – Mega Speed Dynamometer

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Product Description

The MSD – Mega Speed Dynamometer was developed for the testing of very high speed motors such as BLDC, Dental Handpieces, Air Turbines and Surgical Tools. The braking effect is based on Eddy-Current induced on an aluminum disc directly mounted on the DUT (Device Under Test) shaft.

Torque is measured frictionless by a Reaction Torque Sensor mounted under the test bench surface. Due to the thermal effect on the disc, the Mega Speed Dynamometer is not suitable for endurance testing, but can be used to generate a fast curve or perform point to point testing. An infrared sensor monitors the temperature of the disc and stops the test in case of overheating. The disc can be designed and sized according to the motor parameters.

The system is contactless therefore alignment is not critical. Due to this, the system has very low inertia and therefore no residual or drag torque thus having less influence on testing parameters. The speed limitation is based on the Motor Under Test and its ability to drive the disc. Systems reaching speeds over 380 000 rpm have already been manufactured.

MSD-TEST Software is developed in a LabVIEW™ environment. It controls the system and captures the test data. It allows the programing set up of a dedicated test profile.

Every Mega Speed Dynamometer will be adapted around the motor characteristics and performances to match the best possible test results. Specific motor fixtures will be designed to suit each motor form and dimensions. Motor fixtures are available for fixturing handpiece or motor.

Air pressure sensor(s) can be provided as an option. The systems offers 2 analog ±10 VDC outputs as well as 6 analog ±10 VDC inputs (which can be configured for speed, torque, pressure,…) Included calibration weights and arms allow to conduct periodical calibration process supported by a dedicated software routine.

The Mega Speed Dynamometer (MSD System) allows the testing of Dentistry – Handpieces and Motors according to ISO 14457. It enhances Magtrol’s expertise in high-speed applications and ideally complements the WB 23 & WB 27 Dynamometers, enabling motor testing up to 100 000 rpm, with nominal torque of 80 mN·m, 150 mN·m respectively.

Features

  • Test Bench for high speed Air Turbine or Electric Motor
  • Contactless Eddy-Current Brake System
  • Speed: ≥ 400 000 rpm
  • Braking Power 20 W (5 min) / 40 W (15 s)
  • Speed & Temperature Sensors
  • Built-in Reaction Torque Sensor (RT 200 Series)
  • Nominal 20 mN·m / Accuracy ± 0.2 %
    (other ranges available on request)
  • Very Low Inertia ~ 8×10-9 Kg·m2
  • No Residual Torque (no bearing) or friction
  • Data Acquisition & Control Software (MSD-TEST)
  • Dentistry – Handpiece and Motor Testing
    according to ISO 14457:2017
  • Configurable Analog Inputs and Outputs
  • Optional Motor or Handpiece Fixture
  • Optional Air Pressure Sensor(s)

Configuration

The test system, its computer program and especially its mounting system are customizable according to the devices to be tested. The fixture system is designed for two standard configurations. The first version consists of a fixture for high speed micro-motors and the second version consists of a special fixture for testing handpieces.

Electrical Micro-Motors Configuration

 

Handpiece configuration

Curves

The MSD-TEST Software (included) allows the configuration of the system as well as the programing of the test sequences and set-up. It displays test curves and data during testing while recording all measured values as data table and txt files. Parameters can be displayed in graphic form (up to 5 axes simultaneously). It is also easy to print or export the data as a Microsoft® Excel spreadsheet.

Test curves (RAMP UP) of a Dental Turbine conducted on MSD – Mega Speed Dynamometer with Speed: ≤ 280 000 rpm and Torque: 0.7 … 2.18 mN·m.

 

Test curves (RAMP DOWN) of a Dental Turbine conducted on Mega Speed Dynamometer with Speed: ≤ 380 000 rpm and Torque: 0.7 … 2.18 mN·m.

Software

Magtrol MSD-TEST is an advanced motor testing software (Windows® based) for data acquisition and system control. Used with the Magtrol Mega Speed Dynamometer, the MSD-TEST determine the performance parameters of a motor / turbine under test. Mechanical properties (torque, speed, power), electrical properties (current, voltage, power) via power  measurement system (optional), air pressure (optional) or temperature (optional) can be acquired. The software allow to configure the 2 analog ±10 V outputs as well as the 6 analog ±10 V inputs as needed. Test Set-up can be programmed and recalled any time.The system displays graphs of the tested object’s performances.

Developed in LabVIEW™, MSD-TEST has the flexibility to test a variety of rotating systems in a multitude of configurations. The data generated from this user-friendly program can be stored, displayed and printed in tabular or graphical formats, and is easily imported into a spreadsheet for further analyses. The software integrates a calibration routine, allowing the control and periodical calibration of the MSD Mega Speed Dynamometer.

Magtrol can also make custom modifications to the software to meet additional motor testing requirements.

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                    [post_content] => Magtrol Coupling Guards are easily removable and designed to mount in front of Magtrol HD Series Dynamometers. They are also available for some WB Series Dynamometers.

Coupling Guards help keep objects from vertical interference and aid in preventing accidental coupling contact during rotation. The guard length required will change according to the coupling size used with the dynamometer.

Magtrol Coupling Guards are not explosion proof and are not intended as protection against catastrophic coupling failure.
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                    [post_content] => Magtrol offers these calibration beam assemblies and weights for calibrating HD-Series Hysteresis Dynamometers. To perform a successful dynamometer calibration, precision weights heavy enough to apply a torque at or close to the full scale rating are required. Magtrol WT Series Calibration Weights are equal to the dynamometer's torque value, divided by the distance between the outer pin and centerline of the corresponding CB Series Calibration Beam. Calibration Weights are available in English or SI units. Calibration Beams are marked for both English and SI weights. For detailed dimension drawings, click on the model's underlined link. A PDF document will open in a new window.(Adobe Acrobat Reader 7.0, or later, is required.)
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                    [post_content] => Magtrol’s PT Series T-slot Base Plates are used for creating a basic test rig by mounting a Magtrol Dynamometer, Brake or Torque Transducer in line with the unit to be tested. Depending on the system configuration, a riser may be required to lift the transducer from the baseplate to the shaft height of the brake and/or the motor being tested. Magtrol RTM Riser Kits come complete with attachment hardware for the transducer and T‑nuts and bolts for attachment to the PT Base Plate.
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                    [post_content] => DES Series Power Supplies are specially designed for the full range of Magtrol’s Eddy-current and Powder brake dynamometers with the design goal providing the best response time. The DES Series supplies are packaged in an industrial housing made of cast aluminum. This offers superior protection against radiated emissions in order to avoid any disruption of the surrounding electronics modules. This housing must be installed directly on the test bench, next to the brake, as close as possible.

The DES Series supplies can be controlled by digital signals and analog set point coming from peripheral electronics. The DSP7010 Dynamometer Controller has been designed to work with the DES Series.

Control

The Power supply can be switched ON by remote control. The STAND-BY signal enables the output current to be delivered. This excitation current is controlled by a set-point in the 0-10 V DC range. The nominal value of the excitation current is set by internal resistors. There are two discrete outputs for alarms (open collector). The first is the "Temperature Alarm". It will indicate if the cooling water of the Dynamometer or the inner temperature of the DES Series are out of limits. The second is the "Electrical Alarm". It occurs when an over current or a short circuit is detected. The output current is immediately turned OFF and latched while the General Alarm Relay is set under its Alarm position. A low state for 200 ms of the Stand-by signal resets the latch.

For applications with TANDEM dynanometers, the DES Series units also control the power supply of the electromagnetic clutch.

Supply Voltage

The main supply voltage of the DES Series is in the 115/230 VAC - 50/60 Hz range. No selection is required.

The DES 410 power supply features a galvanic insulation between the main circuit and the dynamometer power.

The DES 411 does not have galvanic separation. For safety reasons, the DES Series case has to be grounded and the use of a ground fault current circuit breaker is recommended.
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            [post_content] => Magtrol Coupling Guards are easily removable and designed to mount in front of Magtrol HD Series Dynamometers. They are also available for some WB Series Dynamometers.

Coupling Guards help keep objects from vertical interference and aid in preventing accidental coupling contact during rotation. The guard length required will change according to the coupling size used with the dynamometer.

Magtrol Coupling Guards are not explosion proof and are not intended as protection against catastrophic coupling failure.
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