Digital Dream EC500 User Manual page 5

4. Controller EC500 Power Solution
The power supply solution in the field of the Industrial automation is always very complicated, there is a
lot of the GND, now we descript the structure of the power structure as below:
The power structure as the Picture 4-1,Power supply input and Ethernet port share common GND, stepper
control module,Input&Output module,Spindle control module and MPG Port share common GND, between the
two sector there is photoelectric isolation. Inside of the board, there is GND as common-, no need to connect
external power supply.
Digital Dream Mach3 Motion Controller
Picture 4-1 EC 500 Power supply structure
Page -3 EC500 User's Manual