I have used both on occasion, as posted earlier, out of either I prefer to go with the motor side reactor.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Never used braking resistors very often.
I usually do a auto tune if it has that feature, then tweak it afterward.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
It wouldnt hurt though, right?
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Got a question on Shield Drain wiring. Where will they be wired to and from? How is it done. I know to mount the Shield drains but i do not where will they 'ground' to? Does it go back to the panel?
i found this on a different site:
'Its worth using shielded wire, with the shield attached on one end only, typically at the controller end at a ground point that is also attached to the machine frame."
Last edited by naspc; 05-12-2017 at 11:31 PM.
If a proper ground conductor is ran along with the 3 phase conductors, the shield can be connected to earth GND at both ends.
Al
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Your machine is Grounded so no Ground bar is needed, you may need one in you electrical cabinet if it does not have a metal back plate ( Ground Plane )
For your stepper motors you would terminate the shield to the body of the stepper motor, As per the post snips, for the other end you terminate the shield where ever the cable ends, to the Ground plane, which is the metal plate that everything is mounted on, by using a clamp around the shield, a clamp type like attached is the easiest way to do it or something similar
Mactec54
I think I understand now. Machine chassis ground and drains go to earth ground not 0V ground. My house was built in the late 70's and it looks like earth ground may be connected to the water pipe. Is that adequate or should I establish a new one?
His earth ground from the water pipe likely goes into the panel, and would be the same ground that's coming to the machine from his supply circuit? So, he shouldn't need to run a new ground from the panel, as he should already have one.
I think that there's a miscommunication here.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
I guess if certain pipe grounded back to panel. Had a buddy who used/installed a grounding rod for machine ground and small short fried machine and caused fire. The breaker not tripping due to improper ground was the cause.
Last edited by Dan911; 05-21-2017 at 09:44 AM. Reason: spelling
Grounding the panel to a water pipe is common practice.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Yes for telephones and cable. Low voltage.
So correct me if I am wrong I can use the power circuits ground that feeds my VFD as where my chassis ground and shield drainconnects to?