High-speed Eddy-current Dynamometer WB 23 - MAGTROL - #1

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WB 23 Data Sheet WB 23 High-Speed Eddy-Current Dynamometer 1 www.magtrol.com MAGTROL Features • Torque: 80 mN·m • Speed: up to 100,000 rpm • Power: 50 W continuous; 300 W intermittent • Low inertia • Very low residual torque • Stable braking torque, without blows • Measuring system for air-bearing and protection guard • Data acquisition via DSP6001 Controller and M-TEST Software • Built-in electronics for Torque and Speed measurement • Optional motor fixture available Description Magtrol’s new WB 23 Eddy-Current Brake Dynamometer is designed for very-high-speed motor and engine testing applications. By providing a braking torque that is proportional to the rotational speed, peak torque (and full braking power) is reached at the rated speed of 100,000 rpm. The WB 23 Dynamometer features a low level of inertia, due to small rotor dimensions, and brake cooling is provided by an air passage inside the dynamometer housing. This results in the dynamometer’s ability to dissipate 50 watts of power (continuous duty), 100 watts for a maximum of 150 seconds or 300 watts for a maximum of 60 seconds. The PT 1000 temperature sensor is another integral component of the dynamometer. It continuously measures the brake temperature and alarms the DSP6001 Controller to immediately stop the brake excitation current to protect the dynamometer from overheating. Operating Principles Torque is measured by a reaction-force transducer placed on the stator. The dynamometer has a torque measuring accuracy rating of ±1% full scale. The speed is measured by an optical sensor and a 6-bit encoder disc. This sensor measures engine/ motor speeds between 10 and 100 000 rpm with a full scale accuracy of ± 0.06 % (using a DSP6001). Complete PC Control Magtrol’s M-TEST 5.0 Software is a state-of-the-art motor testing program for Windows®-based data acquisition. Used with a Magtrol DSP6001 Programmable Dynamometer Controller, Magtrol M-TEST 5.0 Software provides the control of any Magtrol Eddy-Current or Powder Brake Dynamometer and runs test sequences in a manner best suited to the overall accuracy and efficiency of the Magtrol Motor Test System. The data that is generated by Magtrol’s Motor Testing Software can be stored, displayed and printed in tabular or graphic formats, and can be easily imported into a spreadsheet. Written in LabVIEW™, M-TEST 5.0 has the flexibility to test a majority of motor types in a variety of ways. Because of LabVIEW’s versatility, obtaining data from other sources (e.g. thermo torques), controlling motor power and providing audio/visual indicators is relatively easy. Magtrol’s M-TEST 5.0 Software is ideal for simulating loads, cycling the unit under test and motor ramping. Because it is easy to gather data and duplicate tests, the software is ideal for use in engineering labs. Tests can be programmed to run on their own and saved for future use allowing for valuable time savings in production testing and incoming/outgoing inspection. Magtrol offers three types of dynamometer brakes to absorb load: Hysteresis, Eddy- Current and Magnetic Powder. Each type of Dynamometer has advantages and limitations and choosing the correct one will depend largely on the type of testing to be performed. With over 50 models to choose from, Magtrol Sales professionals are readily available to assist in selecting the proper Dynamometer to meet your testing needs. WB 23 Dynamometer PRELIMINARY