[Al Skierkiewicz]

tech,
Marshall said he checked using voltage mode after the controller failed. Vbus is used when the target speed on the motor is known and the input voltage is variable. In CAN bus Voltage mode, this is a requirement to maintain motor speed in the absence of a rotational sensor. Again it is a calculation used to make the output voltage appear to be regulated. It does not regulate the output voltage but it does modify the PWM output to the motor to simulate voltage changes. Again, the Vbus must be monitored in all modes even if only used for internal protections.
It is not necessary to fill the server with text that is easily found somewhere else. If you would like you can delete your earlier posts or I can. Just let me know.