Lost connection with C2000 Renewable Energy Developer's Kit

Hi Michael,

     Are you using a USB to serial adapter? We have found that sometimes those tend to create some instability with the GUI. Have you been able to connect to the board and successfully run the GUI? If you power cycle the board does this allow the computer to connect to the board? Let me know more about your exact configuration so we can debug this. Thanks!

Charlie

Charlie,

I used a USB to serial adapter at the beginning. When I realized the disconnection problem. I switched to another PC with RS-232 series port. After then, I have seen the line sine wave and the inverter output. The light bulbs were lit up. However, the connection lost again. I believe something went wrong with the board. The LED1 start flashing. I check the 3.3V bus and found it became unstable. That mean the MCU can not work properly. I guess I should return this board for repair or replace.

Michael

Michael,

       If you power cycle the board does it then work? The GUI tends to be a little less than stable. Can you verify that the 3.3V bus is unstable? Maybe post the waveform? Which 3.3V rail are you testing? The one on the controlCARD or the solar board itself? Thanks!

Charlie

Charlie,

I mistakenly replied the email notice. Now I reply here.
The problem started with GUI. I re-tried several time. Occasionally, it works. Then I heard the noise and noticed the LED1 was flashing. I checked the schematic that LED1 indicated 3.3V. I checked 3.3V on the solar board by scope. It was unstable.

Michael

Just to be sure I suggest you take out the control card and power up the board separately to measure all the voltage rails. You should get all the voltage rails if the board is working properly.

Without the control card, neither 5V or 3.3V is stable. The board doesn't work properly.

That's not good [:(] The rails should be available after powering the board.