When I use 'TDSHVMTRINSPIN' inverter board, the 'F2806x ISO control card , Release 0.4' is burned
In more detail, I use 'TDSHVMTRINSPIN' inverter board for running 350W, 220V, 1.4A Interior Permanent Magnet Synchronous Motor.
And when I finish running motor successfully, I disconnect cables to finish my experiment.
The procedure like this,
1. I disconnect 220V AC power cable
2. I disconnect BS1 cable connected with BS5 by banana cable.
at this point, the control card emmiting flash and burned..
I guess the capacitor has some residual power, and that is the reason of this accident.
but, I'm not sure why this accident happened.
Any can help me to investigate the cause of this accident?
Thank you in advance :)