Losing steps/position, again

[JAZZCNC]

Thanks - obviously reducing the power I supply will also reduce the initial outlay (as well as havingto replace everything including burnt oout motors).

Think I've just answered this one in last post but sorry you need larger not smaller for the reason stated below.

Could you be so kind as to point me in the right direction for what you would suggest and is there ay advantage with a toroidal transformer (a plug and play box suits me if possible).

Ok well the advantage with toroidal transformer, when used with capacitors and bridge rectifiers that make up a DC PSU, (yes you need these as well) is that it means you can get away with lower power rating than you would need with a switch-mode supply. You can also build to the exact power requirements you need.

It gets complicated but in a nutshell, let us say you have 4 motors all pulling 4a which means you'd need a 16a for a SWM supply to work reliably and keep up with drives/motors demands when working hard. In practice, the actual rating needed will be higher for reasons I won't get into now. But all this means a Large SWM PSU this size gets expensive quickly.

Whereas a Toroidal/capacitor-based PSU allows you to get away with PSU size only 60% of the motors total draw. It does this by drawing from its bank of capacitors and how the drives work. It also ensures a smoother flow of power because you always have a reserve in the capacitors.
So again, in a Nutshell, yes it's best for these reasons and the fact can size to exact needs and it's often much Cheaper when higher power is needed which is why it's used so much on routers and DIY builds.


Regards the AXBB-E Controller I have never used one personally so I'm not recommending you use it but I do know several people who have used them and are very happy with them. I've fitted several of its Big brother the Uc300ETH and they are also very good so I cannot see these being a bad card. The UCCNC software is also very good so I wouldn't hesitate if it was me.