step and dir pulse problem Mach3

[mrmacca]

Hi Macca,

I got your email but thought I'd reply here then others can get some thing from it if needed,



You don't need an On/Off and can just use the Mains switch on the wall but a separate switch is nice to have and simple to fit. Just use any switch rated to handle 240V and break the Live wire or better still a 2 pole switch and break both Live and neutral. Don't break the Earth wire.

On a separate note to be safe you should really have a latching safety circuit built into the E-stop that turns off power to the drives when pressed and won't be allowed to reset until all is safe. The easy way to do this is with a Relay and Momentary button wired in series with the E-stop. If you want to do this just say and I will draw you a circuit showing how.

If you don't have a latching system the moment you turn on power the drives will become active so if say for instance the E-stop was released and UCCNC was running code when turned on the machine will instantly start moving with no clue where it is and will crash.
With a latching system this can't happen also a signal will be sent to the controller saying an E-stop is in place and won't allow UCCNC to Reset.



L1 and L2 are usually the Mains Inputs but without seeing and knowing more about the VFD it's difficult to know or advise safely. Give better pictures



Again you need to explain better what your meaning is, if you mean can the power Inputs be joined together then yes that's no problem. If you're talking about the Outputs then you need to explain better what you are trying to do.?

Cheers, a latching system would be good if you could do me a diagram , as for the VFD the wires are coming from L1 and L2 and i cant remember what they were attached to, yes i want to join the power inputs so they operate from one cable. What about fans i have 2 were do i connect these. The cables from the VFD went to in1 and ov on the old board.

Cheers for all the help, I'm sure I will need more.

[JAZZCNC]

Cheers, a latching system would be good if you could do me a diagram

Attached pic. colours might not match yours but should show you how it's done.

Edit: Note that you need a contactor rated to suit the PSU which turns on the drives. Don't use a Relay if you are switching DC to the drives.

as for the VFD the wires are coming from L1 and L2 and i cant remember what they were attached to

They are the Mains Input so put Live to L1 Neutral to L2.

What about fans i have 2 were do i connect these.

Need to know more about the fans.