Xilinx Spartan 6 FPGA Quick Start Manual page 25

Qdesys Sensorless Field Oriented Control Quick Start Guide
If the motor stops spinning for any reason, the control panel will look like this:
a) Simply toggle the Motor Run button OFF.
b) Click anywhere inside the red IS meter to clear the fault.
c) Toggle the Motor Run button ON and turn the TRQ dial to ~0.8
If the fault persists you might have different causes but try the following:
(a) Check if the right motor type and its associated descriptor file have been connected
and the file opened.
(b) Remove any blocking elements from the motor shaft
(c) Reduce the TRQ
(d) Increase the TRQ (the TRQ current might be too low for the load)
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