Dual Test 7 – Motor Testing Software

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Product Description

Magtrol’s DUAL TEST 7 is a state-of-the-art motor testing software for PC (Windows® XP sp3/7/8) based data acquisition. Used with a Magtrol Programmable Dynamometer Controller DSP7012, DUAL TEST 7 works on two channels independently with any Magtrol Dynamometer or In-Line Torque Transducer to help determine the performance characteristics of a motors under test. Up to 63 parameters are calculated and displayed utilizing DUAL TEST 7’s feature-rich testing and graphing capabilities.

An integral component of any Magtrol Motor Test System, DUAL TEST 7 performs curve tests in a manner best suited to the overall efficiency of the test rig. Written in LabVIEW™, DUAL TEST 7 has the flexibility to test a variety of motors 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.

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

Features

  • DSP7012 Programmable Controller Support
  • Full independent dual channels control software
  • Supports the optional Analog and Digital I/O Modules on the DSP7012 Programmable Controller.
  • Expanded power analyzer and power supply selections.
  • Programmable analog and digital outputs per step
  • Test speed, torque, amps, watts input, watts output and open loop parameters.
  • Capable of adjusting sampling rate and using step or ramp from one load point to the next.
  • Displays 63 Tested and Calculated Parameters: Torque, speed and auxiliary input are displayed from the DSP7012 Controller; amps, volts and watts from an (optional) power analyzer. Calculated values including horsepower, efficiency, power factor, output watts and time can also be displayed. Optional analog and digital inputs can also be displayed.
  • Three-Phase Power Analyzer Data Acquisition: Obtain data on each individual phase and/or the sum used in the chosen parameters (amps, volts, input watts and power factor).
  • Motor Shaft Direction Indicator: Indicates if the motor is turning clockwise or counterclockwise.
  • USB Interface : Computer interface USB2.0 available with DSP7012. Optional IEEE-488 or RS-232 can be added.
  • PID Adjustment Routines: Helps user adjust the system for ramp and step functions.
  • Graphing Capabilities: Display up to 5 test curves in a single graph; easy-to-read colored and labeled plots with several graph formatting options; manual or auto scaling.
  • Curve Fitting: A curve fitting routine can be applied to most motor test curves. Raw data and curve fit data can also be displayed simultaneously.
  • Save/Load Setup Function: Test procedure configurations may be stored and recalled using standard Windows® file structure

Applications

DUAL TEST 7—besides being well-suited for simulating loads, cycling the unit under test and motor ramping—is also ideal for production line, due to the full dual channels tests functions. Another time-saving feature, that engineering labs will benefit from, is the ability to duplicate tests and run them automatically. This versatile program is extremely valuable to anyone involved in motor testing.

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                    [post_content] => Magtrol’s EMA Series Stand Alone Encoder provides a squarewave output on two channels for up/down counting or free-runmotor speed measurement applications. Each channel outputs the specified pulses per revolution of the encoder shaft, and is 90° phase-shifted in order to determine direction when used with the appropriate counter/timer DAQ board. The device incorporates an infrared optical switch and disk assembled into a rugged aluminum housing. The encoder is supplied with an 8 mm rectangular key for easy alignment to a Magtrol PT 25 Base Plate.
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                    [post_content] => Eddy-Current Brake Dynamometers (WB Series) are ideal for applications requiring high speeds and also when operating in the middle to high power range. Eddy-Current Brakes provide increasing torque as the speed increases, reaching peak torque at rated speed. The dynamometers have low inertia as a result of small rotor diameter. Brake cooling is provided by a water circulation system, which passes inside the stator to dissipate heat generated by the braking power, providing high continuous power ratings (max. 140 kW). WB Series Dynamometers integrate a torque measuring system with accuracy ratings of ± 0.3 % to ± 0.5 % full scale, depending on size and system configuration.

Features


    
 	
  • 12 Models with Maximum Torque from 400 mN·m to 560 N·m (56.6 oz·in to 413 lb·ft)
    • 
 	
  • Braking Power: from 500 W to 140 kW
    • 
 	
  • Stable Braking Torque, without Shock
    • 
 	
  • Low Moment of Inertia
    • 
 	
  • Low Residual Torque
    • 
 	
  • Operating Direction CW / CCW
    • 
 	
  • Braking Torque Measurement Integrated
    • 
 	
  • High Rotational Speed (≤ 80 000)
    • 
 	
  • Integrated Optical Speed Sensor
    • 
 	
  • Special designs available upon request
    • 



Operating Principles

The WB Eddy-Current Dynamometers develop their full power at high rotation speeds. The WB Series is particularly intended for motors which rotate at high speeds, up to 80 000 rpm (up to 100 000 rpm with WB 23 / 27; see specific datasheet). The braking torque depends on the rotation speed.

Optical Speed Sensor
Each WB Series Dynamometer is equipped with an optical speed sensor. WB 32 is equipped with a 4 PPR (Pulses Per Revolution) encoder, WB 43 and WB 65 HS are equipped with a 30 PPR encoder; WB 65, WB 115 & WB 15 are equipped with a 60 PPR encoder.
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                    [post_content] => Magtrol's Model DSP7000 High-Speed Programmable. Dynamometer Controller employs state-of-the-art Digital Signal Processing Technology to provide superior motor testing capabilities. Designed for use with any Magtrol Hysteresis, Eddy-Current or Powder Brake Dynamometer, Magtrol In-Line Torque Transducer or auxiliary instrumentation, the DSP7000 can provide complete PC control via IEEE-488 or RS-232 interface. With up to 500 readings per second, the DSP7000 is ideally suited for both the test lab and the production line.
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                    [post_content] => Hysteresis Brake Dynamometers (HD Series) are versatile and ideal for testing in the low to medium power range (maximum 14 kW intermittent duty).  With a Hysteresis Braking system, the Dynamometers do not require speed to create torque, and therefore can provide a full motor ramp from free-run to locked rotor.  Brake cooling is provided by convection (no external source), by compressed air or by dedicated blower, depending on the model.  All Magtrol Hysteresis Dynamometers have accuracy ratings of ± 0.25% full scale — depending on size and system configuration.

Features


    
 	
  • 16 Standard Models with Maximum Torque from 2.5 oz·in to 500 lb·in (18 mN·m to 56.5 N·m)
    • 
 	
  • Hysteresis Braking System: Provides precise torque loading independent of shaft speed
    • 
 	
  • Motor Testing from No Load to Locked Rotor
    • 
 	
  • Accuracy: ±0.25% (Full Scale)
    • 
 	
  • Air Flow Sensor: For protection against overheating and operator error
    • 
 	
  • Standard Torque Units: English, Metric and SI
    • 
 	
  • Custom Dynamometers: for special torque and speed requirements
    • 
 	
  • Easy Calibration
    • 



The Hysteresis Braking System

All Magtrol Hysteresis Dynamometers absorb power with a unique Hysteresis Braking System which provides frictionless torque loading independent of shaft speed. The Hysteresis Brake provides torque by the use of two basic components - a reticulated pole structure and a specialty steel rotor/shaft assembly - fitted together but not in physical contact. Until the pole structure is energized, the drag cup can spin freely on its shaft bearings. When a magnetizing force from the field coil is applied to the pole structure, the air gap becomes a flux field and the rotor is magnetically restrained, providing a braking action between the pole structure and rotor.


 

 

 

 

 




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