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Messages - CNCCrazy

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General Mach Discussion / Re: Mitsubishi MR-J2S model and MACH 3
« on: February 24, 2014, 01:29:16 PM »
Hi,

thanks for the reply, it really is hard work just looking through the manuals especially as i'm new to this

Looks like my only hope is the A/B pulse which the manual says is "A-phase and B-phase signals with 90°phase difference", does not say what voltage

This did not really mean anything to me, looking on the internet it seems to be a "table" of two values (A and B) that you move through forwards or backwards.. is it really that simple?

What comes to mind is converting step/direction to A/B via some simple TTL circuit (or a small microcontroller), does that sound possible?

I will investigate SmoothStepper, not found much info yet, I really wanted to get things going as cheaply as possible until I prove I can work with the Mitsubishi drives at all, maybe just get something working at a slow feed rate then progress from that

The other thing I found was something called "CL Mode" which it says is "quadrature" for working with MACNC CL10, was this an old feature with hard coded output for one specific mill?

thanks
Kevin


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General Mach Discussion / Mitsubishi MR-J2S model and MACH 3
« on: February 23, 2014, 03:56:13 PM »
Hi,

Just joined this forum after seeing the detailed expert advice given, so hopefully I can purchase MACH3 soon..


My only issue is I've just mentioned in the introduce yourself section that i've purchased some parts for a CNC build including Mitsubishi MR-J2S servo drives and motors

The model of drive is the MR-J2S-70CP and that why I could really do with some help/advice.. please :)

I understand the A model can take a pulse/direction signal and the B model cannot however after hours studying the manual I cannot figure out if the CP model can?

The closest I can see is the "Manual pulse generator" input.. could I use that and connect MACH 3 via a breakout board?

thanks
Kevin

3
Hi,

Thought I would introduce myself, I'm Kevin and have wanted to build a CNC machine since before all these amazing resources appeared on the internet, its about time I got round to building something!

I think I just needed a kickstart and hopefully that has come in the form of buying a load of items from a large printing machine that was being stripped for parts

Managed to pick up THK rails (2x 10ft), loads of extrusions, steel frame, 9ftx5ft suction bed, Mitsubishi servos so hopefully be able to start building soon

I'm hoping to purchase MACH 3 but I'm not sure if it will work with the model of drive I have so will post a question about that, any help appreciated as after all these years I cannot wait to get started

thanks
Kevin

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