How to Test a Variable Speed Drive (VSD) With a Fluke ScopeMeter®

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In this video, learn how to test variable speed drives (VSDs) with a Fluke Portable Oscilloscope/ScopeMeter®.
Variable Speed Drives is not only a great tool for energy conservation, but many industrial processes require that a VSD is kept in working order. if an issue occurs, the fault indicator LED for a variable speed drive will turn on.
In this scenario, the error code is F4; the drive has detected an "under voltage" condition and shuts down. To troubleshoot this issue, use a Fluke Digital Multimeter to check the line input voltage. But depending on the type of distortion, the peak value may not reveal whether a problem exists. After testing the VSD DC Bus Voltage, we found that it was performing 20% under the nominal value, which is a problem.
What's next? With the help of a Fluke ScopeMeter® Portable Oscilloscope, you can easily troubleshoot the VSD and determine the root cause of failure in greater detail. A Fluke ScopeMeter® will capture and display unknown waveform shapes, amplitudes and any disturbances; giving you the information needed to properly troubleshoot, diagnose and solve problems. After using the Fluke ScopeMeter, we were able to determine that the problem does not lie with the VSD or the motor, but rather was a distorted supply voltage.
For more information on Fluke ScopeMeter® Portable Oscilloscopes, visit the Fluke website here: bit.ly/2xabqIi