Figure 5-12. Keep Driving After Stall Option
In manual stall threshold entry mode run the motor with “Stall Threshold” slider set to zero. The torque
count it displayed as well as plotted in the graph vs. time. Use the x8 multiplier if the torque count is low
while using high DCR stepper motors.
Note
The torque count and set the threshold to 50 % of the torque count value or lower. Follow the
same procedure as in the learn mode operation to detect a motor stall. Pressing the “Export
Torque Count Values” exports 512 values of the historical torque count to an Excel file.
Figure 5-13. Torque Count and Export Torque
f.
Custom microstepping: To setup and enable this feature CUSTOM MICROSTEPPING tab should be
used. Custom microstepping allows the user to define a custom current waveform other than the sine
wave defined by the integrated microstepping indexer. When custom microstepping is enabled the
integrated microstepping settings are ignored by the driver regardless of its setting.
A drop down menu allows the user to choose between “User defined” (default) or three other preset
options available in the GUI. This is a GUI feature provided for ease of use. Click on the desired
option, for example “Triangular” to automatically populate the Registers CUSTOM_CURRENT1 to
CUSTOM_CURRENT8. Registers CUSTOM_CURRENT1 to CUSTOM_CURRENT8 define the first
quadrant of the electrical cycle of the phase currents. Rest of the quadrants are automatically populated
by the device including the zero values of the full electrical cycle. If the “User defined” option is selected,
enter the values for a desired waveform. Enable the “Custom-microstepping” slide switch after the
Registers are populated with the required values.
GUI Operations DRV8462
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DRV84x2_DRV82x2_DRV89x2-EVM User's Guide
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