Boxford 165 HMC

[JAZZCNC]

I then went a step further and put the ground (feed to the contactor) into estop1 on the MPG module and put ESTOP2 to ground as the MPG module ESTOP button opens the circuit then mach 3 knows about it,
but no because as soon as I push the enable the spindle motor spins, so I put the feed to contactor ground not through the MPG module and it works fine yet in the cs labs instructions it shows the ESTOP1 and ESTOP2 are just a switch, am I being simple and missing something?
the MPG is not smooth at all, is that for another thread??
chris.

No not being simple it is just a switch. Think of it like a relay E1 & E2 are just a contact which are controlled by pins 13 & 25 which are like the coil. In reality it will be a transistor or something like that but principle is the same.

So E1 & E2 just go in series with your main E-stop that drops the Contactors. The control will know then because the Input you run thru the Contactor spare terminal will signal this.
Provided your Main E-stop Circuit is a Latching one then Pushing Enable should have No affect if E-stop is pressed. It shouldn't even spin when Enable is pushed if Mach isn't reset and then when it is still shouldn't spin untill given a M3 command or spindle spin button pressed. So Sounds to me like you still have something wrong on the spindle side.

Or If when you push E-stop then release it your system becomes live again then your not safe. You should have a Reset button that will only allow a Restart when things are correct.

Can't help with the Rough MPG I'm afraid. Are you using a pendent bought with MPG or is it one you made up.? Could be dodgy wiring so encoder signals are wrong or faulty Rotery MPG.?