ACH580 and E Clipse underload detection

With no additional hardware, VFDs can sense a loss of load a broken belt, broken coupling, dead heading, and other loss-of-flow scenarios in fan and pump applications. Configuring the drive to monitor Torque is more reliable than monitoring current. For bypass packages, the E-Clipse bypass can also monitor for these conditions. This presentation reviews various loss of load conditions, current versus torque sensing methods, along with how to determine key data points to configure the VFD.
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