Thanks
Tried mounting the monitor and found that the door carrying arms are a bit weak. Their section is 12x3mm and there are four of them. I think I will replace them. Will get them cut from a 5mm instead and may also increase the width to around 15mm.

By the way, the picture above doesn't show the door fully opened and makes it look like part of the cabinet is covered. When fully opened it is almost in the same line with the cabinet edge and you get full access to the cabinet interior.

Dan

Maybe just geting the edge bent to a right angle would allow you to use the thinner material.
Hood

The shape is too odd to try and bend the edge. And even if I wanted to I had to order new ones cut anyway (significantly wider to allow for the bend) so getting them cut from a thicker material in the first place is cheaper, faster and easier

Dan

Hood,

It was in your wee lathe topic, I think, that I asked you about how you implement Estop in your control. You said that Estop was cutting power to your drives. This is how I want to do this on this one, but I am a bit confused. If the servo drive outputs a fault signal I want it to trigger the Estop sequence which in turn will shut the drive off and depending on the wiring (fault line active low or high) this will either mean that I won't be able to get out of this state or it will get powered up right after it powers off. Question is how do you do this?

Dan

Have a manual override button on your panel that bypasses the fault signals.

Hood

So after hitting the Estop button you hold that override button while releasing the Estop?

Dan

The way I do it is  my E-stop cuts power to the contactors and also sends an E-Stop signal to Mach. If I bring it back on it powers the contactors coils again and I can reset in Mach.
My fault signals from the drives, limits and E-Stop are also used to take the enables away from the drives and it is the limits I have the override button for. I do all this in a PLC as its the easiest way but could be done the same way with relays I suppose.
So if a drive faults I can reset the drive then reset Mach but if a limit is hit I need to press that button until I reset Mach then jog off, I can then release it.

If you were wanting to have the fault signals in the actual E-Stop string then you would have to press the button until the drives enabled and sent the no-fault signal.

One thing I was going to incorporate into my limit/fault/E-Stop was the overtravel inputs to my drives as that should stop them immediately but as I found they do stop instantly then I never needed to. Possibly on a lathe like yours with minimal friction it may be something to look at.

Hood

Ah...  so a fault signal from a drive won't cut off power to the drives on your machines. That explains it. Hmm... The little lathe only has a servo on the spindle. The axes are steppers. So I think I will do the same then. A fault signal from the servo will cut power to the steppers and send a signal to Mach3. Somehow I overlooked this and wanted the servo cut power to itself on a fault

Dan

That should work fine especially if you can also have the fault signal throwing an E-Stop to Mach.
Hood

A small update. Ball screw guards mounted:



Dan