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Messages - stirling

311
General Mach Discussion / Re: Rotary Axis Help
« on: March 31, 2015, 05:37:30 AM »
Darius - welcome to the forum. Unfortunately not only have you resurrected a 5 year old thread but you've done it twice. Please start your own thread - you'll get more/better replies if you do.

312
Brains Development / Re: Can a brain trigger a wave file?
« on: March 31, 2015, 04:49:21 AM »
not sure from your question whether you're aware Mach does this out-of-the-box (but not via brians afaik)?

see "speech" and "wave" in the user guide.

you may struggle with e-stop because everything (well - nearly everything) stops on e-stop.

313
bit late on this but your original approach of using M6 is by far the easiest way (and the correct way IMO) to do this.

314
General Mach Discussion / Re: Stepper Motor Maximum Voltage
« on: March 31, 2015, 04:29:13 AM »
I don't see where Stirling got 53 v from, it's not in the data provided afaics.  

It's there, you just have to use ALL the data @golash provided. The label on the motor in one of the ebay pics gives you your google search for the data sheet etc. etc. which is exactly what I did and Gerry has confirmed.

So to drive that motor to max speed and torque you use 1.6A at 53 volts. Any less of either and you're driving the motor under it's potential speed and torque (which is fine if it's enough for your purposes), any more of either and you're abusing the motor.

Hi
So its a bipolar drive I believe.... so is that  1.6 x 2 phases =3.2 amps

No - set your drive to 1.6A

315
General Mach Discussion / Re: Stepper Motor Maximum Voltage
« on: March 30, 2015, 01:31:14 PM »
looks like your max is going to be 53V. Any more will overheat and shorten the life of the motor.

316
Tangent Corner / Re: CNC LAthe Foot Pedal ?
« on: March 30, 2015, 12:57:40 PM »
Nah - there's only one real use for a pedal  :-*

<a href="http://www.youtube.com/v/0jf_L5-2qI0?hl=en_US&amp;amp;version=3" target="_blank" rel="noopener noreferrer" class="bbc_link bbc_flash_disabled new_win">http://www.youtube.com/v/0jf_L5-2qI0?hl=en_US&amp;amp;version=3</a>

Ah - those were the days

317
Mach3 and G-Rex / Re: ruining my new cnc from the beginning.
« on: March 17, 2015, 05:54:51 AM »
thanks for your help. ill give that 'home slave with master' button a check and reset the limits on A and keep on reading.

No.

This is why it's important to try to get an understanding of how things work before randomly changing things and hoping.

EITHER - tick home slave with master OR enable your HOME switch on A. The switch on A is intended as a HOME switch NOT a limit switch as you refer to it - the distinction is important.

TBH I just looked at the xml file straight from cncrouterparts and it looks fine to me. I'd start with a new copy and change nothing and see what happens. OK it's in imperial and you want metric but that can easily be changed later.

318
Mach3 and G-Rex / Re: ruining my new cnc from the beginning.
« on: March 16, 2015, 12:39:04 PM »
Everything you describe re: intermittent working/not working still (IMO) points at electrical problems. There is nothing in Mach that would cause a motor to just stop for no reason. When your motor just stopped did the DRO still show movement? I'd be very surprised if it didn't.

However, there are some inconsistencies in your xml which may explain some of the things you've described specifically re: homing.

You have A slaved to X with "home slave with master axis" un-checked. This means you're configured for "gantry squaring". However you don't have any home/limits configured for the A axis. I don't use homing gantry squaring but I think I'm right in saying this is not going to end well. When X hits the home switch, A will just keep on going and try to twist your machine apart. Maybe someone will confirm/correct that.

My best advice is double and triple check all your wiring and then sit down and read the manuals and watch the videos so that you can understand things like this in your config. if you haven't seen them yet they're here http://www.machsupport.com/help-learning. By all means come back if there's anything you don't understand but give them a shot first - it'll really help you to understand how things are supposed to work.

319
Show"N"Tell ( Your Machines) / Re: My first CNC (plasma) machine
« on: March 15, 2015, 04:48:58 AM »
Stirling- I have emailed longs motor and asked about the rated current, and if it is RMS or peak current thats listed. My driver allows me to go up  to 7.8A peak / 5.6A RMS. But, that would mean I would need bigger power supplies, as they are only rated at 5.6A. I emailed longs motors and asked about the specs on it. They do not have this model on their website.
Leave your drives at 5.7A peak for now and see what happens with what you have. Your supplies should be fine because chopper drives will only draw 2/3 of the current from the supply that they're set to deliver to the motors.

320
Show"N"Tell ( Your Machines) / Re: My first CNC (plasma) machine
« on: March 14, 2015, 02:24:16 PM »
Also, do you think I have the driver dip switches set properly? I think I do but, a little reassurance would help calm my nerves a little bit.
That - as they say - is a good question. Depends on what you read and who you believe. This is MY understanding. Others may disagree.

Motors are usually spec'd in RMS. So in your case 5.6A. (if you can actually confirm that's RMS then that would be good).

IF you're FULL stepping then peak = RMS. But you're (quite rightly) microstepping so you're tending towards sinusoidal. A pure sine wave would mean to get 5.6A RMS you'd need to set 1.414*5.6 = 8 peak.