Re: G540 Faulting on X Jog and Y Jog after running with the MDI on Mach 3 - Please He
Originally Posted by
Mokra
Question to all - You think i should buy some new motors for the new setup? The only thing i can figure out that was the problem was to small of wires to the motors. The DB9 cables i bought had 28awg wire and from some documents i found online if you are running 3.5 amps a minim requirement is 24awg. I might have to buy some connectors and 4 pair wire and run my own wires. Also was thinking be a good idea to put the resistor in the control box in front of the fan? Less wire clear to the motors. Good idea or bad? Think the small wire plus the no resistor installed contributed to my problem? After pulling apart the gecko a slight burned connection on the Z axis is burned. Will upload some pictures.
To all people replied, thank you again for the help. Much appreciated. I really didn't run this Gecko long before it burned up or what ever it did. I think Gecko should update some more requirements on there installation guide if this was the problem. I made sure when i solder my control box i used the right size of wire but didn't think the DB9 cables were two small. Oh well you live and learn. Thanks again.
You should really use 22AWG with that type of motor; most manufacturers like Lin Engineering just pop 22AWG on all NEMA 23s to be sure. You should also not be using off-the-shelf DB9 cables as they are typically rated for less current per pin than a stepper motor requires. The only exception is the CNC Router Parts cable but they are custom made for them for the G540 so they have a higher gauge wire inside.
We can pop an application note on our site soon about correct wire gauge and why off the shelf DB9s aren't recommended. We are going to be doing some tech videos as well so this can be one of them. Don't worry though, we will also write the app note; I hate being forced to watch a video on something I could easily just read about.
Go ahead and shoot that G540 over here and we can run it through out tests and get it working like new again.
Marcus Freimanis
www.geckodrive.com