User`s manual

2
Magtrol WB/PB DynamometersChapter 1 – Introduction
1.2 DATA SHEETS
1.2.1 WB/PB 2.7 SerieS
WB/PB 2.7
Data Sheet
WB/PB 2.7 Series Eddy-Current
and Powder Dynamometers
1
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MAGTROL
FEATURES
• 10 Models with Maximum Torque from 150 mN·m to
2400 mN·m (21 oz·in to 340 oz·in)
• Braking Power: 20 W to 1 kW
• Stable Braking Torque, without Shock
• Low Moment of Inertia
• Low Residual Torque
• Operation in Either Rotational Direction
• Braking Torque Measurement Included
• Optional Speed Measurement
• High Rotational Speed
• Rated Torque Available From Zero Speed (Powder
Dynamometers)
• Integrated Optical Speed Sensor
DESCRIPTION
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. The
water cooling in the WB provides high
continuous power ratings (max. 1 kW).
Powder Brake Dynamometers (PB
series) are ideal for applications
operating in the low to middle speed
range or when operating in the middle
to high torque range. Powder Brakes
provide full torque at zero speed and
are water-cooled, allowing for power
ratings up to 600 W. Both WB and
PB Dynamometers have accuracy ratings of ± 2% full scale
- depending on size and system configuration.
APPLICATIONS
Mounted on test benches, the WB/PB 2.7 Series Dynamometers
allow performance and reliability testing on driving elements
such as stepper motors, servomotors, micromotors for cameras,
small fans, dental drills, geared motors, small reduction gears,
pneumatic equipment, hydraulic transmission systems and
motors for small domestic appliances.
MOTOR TESTING SYSTEMS
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.
thermocouples), 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.
Model 4 WB-2.7-8K-HS Eddy-Current Dynamometer
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.