Hi Team C2000,
My customer is having the following issue..
I am having an issue with the trips zones on a TI TMS320F28035PNT. The dsp is used to drive an inverter and a feature is to have the inverter turn off when it detects a primary over current. The over current threshold is set by writing a constant to the comparator registers and the DSP gets primary current feedback through one of the ADC inputs and this is what drives the trip to turn off the inverter.
We then check the flags to turn off the inverter.
While the bus is powered the board drives a keep alive circuit to keep power to the DSP and inverter. A key off of the machine is required to clear the errors even though the board and DSP never power cycle because of that keep alive. With the statement above the fault’s getting set will keep the inverter off so we should be able to reset the trip zone. The issues is that the write to the clear register won’t set the flags back to 0 so the fault keeps hitting.
Any ideas on how to fix this?
Thx, Merril Newman
