Unable to set open loop voltage

[cdoel]

**EDIT: I misunderstood the implementation of the open loop mode, as I thought it was performing open loop SVPWM at a particular modulation index. After reviewing the open loop documentation within the motor control docs I now understand that this is not the case and will attempt to use it properly... please feel free to delete this post**

 

Motor control workbench version : 6.3.0
Motor pilot version: 1.2.9

Hello!

I would like to perform an open loop modulation test. After configuring the project to allow open loop and selecting OPEN_LOOP_VOLTAGE mode within the profiler, I am unable to alter the voltage reference within the advanced pane. As soon as I alter the value, it is immediately reset back to 0. If I run the open loop modulation with a voltage ref of 0 then the high side U FET sweeps from 0% duty cycle to 100% which subsequently trips the power supply and produces an undervoltage fault. Are you able to assist me on setting an appropriate voltage/modulation index for open loop commutation?

[GMA]

Hello @cdoel,

Thank you for your feedback.

Please, consider clicking on 'Accept as solution' to keep your message that could be helpful for other users facing the same question.