I have this schematic that I use to run some Gecko G201 modules (http://www.geckodrive.com/product.cfm?pid=9) and some triphase 380V contactors for a CNC machine.
http://s240128836.onlinehome.us/alt/msch.gif.
The problem I face is that sometimes I get serious USB communication errors that force me to reconnect to the microchip USB driver losing important real time events. The microcontrollers hold on and do not reset themseves.
The communication errors come often when a contactor is starting a 2.5kW triphase motor but this is not an absolute rule. Sometimes I get errors for no particular reason.
I have tried to power the board with a battery, this helped me a lot reducing power line noise but even with the beterry powering the microcontroller (30cm wire length) I get communication errors.
Is there anybody who can help me optimize the schematic in order to overcome this problem?
Thank you!
ing. Rares Tohanean
http://s240128836.onlinehome.us/alt/msch.gif.
The problem I face is that sometimes I get serious USB communication errors that force me to reconnect to the microchip USB driver losing important real time events. The microcontrollers hold on and do not reset themseves.
The communication errors come often when a contactor is starting a 2.5kW triphase motor but this is not an absolute rule. Sometimes I get errors for no particular reason.
I have tried to power the board with a battery, this helped me a lot reducing power line noise but even with the beterry powering the microcontroller (30cm wire length) I get communication errors.
Is there anybody who can help me optimize the schematic in order to overcome this problem?
Thank you!
ing. Rares Tohanean