Power supply help

[Clive S]

Can anyone help me find out the volts Dec I can turn my power unit up to that my stepper motor will take all it says on them is 3a 2.4nm no volts. As far as I can make out the drivers will take 50vdc. I have attached a photo. Hope fully someone can help.

If you are using the drivers in you picture then 36 V would be a max and the power supply you have will only give 36V. What is the actual problem you have. Pictures of the setup would be a good starting point.

[Davo242]

The motor on the y just seems if it's not getting enough power to drive the gantry the motor gives the odd shudder also I think the problem could be that it's only driven on one side and I'm just trying to tell myself I don't have to hand out anothe £200 odd to drive the other side to. I will upload some pictures this morning.

[Clive S]

The motor on the y just seems if it's not getting enough power to drive the gantry the motor gives the odd shudder also I think the problem could be that it's only driven on one side and I'm just trying to tell myself I don't have to hand out anothe £200 odd to drive the other side to. I will upload some pictures this morning.

If you are driving the gantry from the side then it will rack. So lets see the pictures

[Davo242]

[routercnc]

For a single CENTRALLY DRIVEN gantry I would not go wider than 600mm. Any wider needs to drive systems (one on each side). Yours looks considerably wider.

Furthermore, and critically, for your design it is very unusual to try and drive a gantry from one side only. It is very likely to rack / judder, plus give poor accuracy when cutting further from the driven side.

I expect that if you grab hold of the non-driven side you can push it back and forth several mm, maybe more ? If so racking is a the likely cause of the judder.

This can be reduced by spacing the X axis bearings further apart fore/aft, but I suspect even this may not be enough if you are still driving from one side.

[Davo242]

yea its what i have been thinking all along. its nearly 1600 on the x axis so i was just pushing my luck. to add another drive on is that the A axis that is used???

[Clive S]

yea its what i have been thinking all along. its nearly 1600 on the x axis so i was just pushing my luck. to add another drive on is that the A axis that is used???

I don't think you will ever get it working with those drives and a 36V power supply and one motor on the long axis. Also do you have a gearbox on the rack & pinion what is the ratio.