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General Mach Discussion / Re: How to fight noise
« on: July 21, 2015, 10:28:38 PM »
No change.
And thinking about it, it wouldn't change as each motor has a ground wire, and basically if the carraige and gantry were electrically isolated they each would still have 2 motors on, and thus 2 ground wires, Y1 and Y2 on gantry and X and Z on carraige. And i thought ground loops that caused noise were more from being connected to 2 different earth ground points, like the "dirty" ground rod at the machine and the "clean" ground rod back at the electrical panel on the wall. I've checked for those types by disconnecting ground wires and checking back to the opposite grounding point they are supposed to be hooked to.
From what I can tell and have been told by tech supports the noise I am dealing with is more related to high frequency caused by PWM driven loads, which might by exagerated due to my Phase perfect phase convert which makes the 3rd leg by PWM means as well, though nothing else in the shop has noise issues. But then both the machining center and turning center probably have transformers in that might isolate the noise....
And thinking about it, it wouldn't change as each motor has a ground wire, and basically if the carraige and gantry were electrically isolated they each would still have 2 motors on, and thus 2 ground wires, Y1 and Y2 on gantry and X and Z on carraige. And i thought ground loops that caused noise were more from being connected to 2 different earth ground points, like the "dirty" ground rod at the machine and the "clean" ground rod back at the electrical panel on the wall. I've checked for those types by disconnecting ground wires and checking back to the opposite grounding point they are supposed to be hooked to.
From what I can tell and have been told by tech supports the noise I am dealing with is more related to high frequency caused by PWM driven loads, which might by exagerated due to my Phase perfect phase convert which makes the 3rd leg by PWM means as well, though nothing else in the shop has noise issues. But then both the machining center and turning center probably have transformers in that might isolate the noise....