[yngndrw]

Yes that would be possible. It's a nice way to add a pendant.

[tauntdesigns]

It's a nice way to add a pendant.

That's a good ideal..... I've been messing around with a gamepad game controller in Mach3, but a real mpg would be nice.

Cheers,
Jack

[yngndrw]

I will probably use an XBox 360 controller for mine, you can get a wireless interface for the PC and it works just like a normal gamepad. (Assuming that you're using Windows.)

The 360 controller has 5 axises + lots of digital buttons. It even has a microphone input and headphone output if that's any use.

[CROSSHATCH]

Couldn't you simply plug the 540's too the output connector of the c11 and connect from the input connector too the PC? Should work fine that way.

Or maybe I'll just sell it and make money back too pay for the 540's....


I'm excited either way.


-Jason

[tauntdesigns]

That may cause a conflict between the two boards, sell it!

[CROSSHATCH]

Seems like I mine as well. As long as I have room for coolant and an E-Stop, I'm ok.

Jason

[CROSSHATCH]

These steppers will seem to do the job just fine with my set-up: http://www.kelinginc.net/KL23H276-30-8B.pdf ? Seems as if the 50 VDC is just right and the amperage should be good for good rapids. Correct me if i'm wrong.


-Jason

[Mariss Freimanis]

This is the first assembled G540. It uses a prototype motherboard. The "real" motherboards arrive tomorrow so it looks like late next week for availability.

John at Keling www.kelinginc.net was kind enough to comp us 4 candidate motors:

KL23H256-21-8B
KL23H276-28-4B
KL23H276-30-8B
KL23H2100-30-4B

We will be taking data on these motors using the G540 in the coming weeks. The results will be posted here. These motors seem like they will be a good fit with the G540.

Mariss

[CROSSHATCH]

OMG! Looks amazing!

I have the KL23H276-30-8B awesome! Can't wait too buy!


-Jason

[derekbackus]

But will It still be a good driver for me too obtain at least 30 IPM with the motors I have? I feel like that is very plausible despite with amperage ratings on my motor.

Jason, I can't directly answer you question, but can give you an example of what it did for my machine.

I was using a Xylotex 3 axis "kit" on my lathe with, of course, one axis empty. I have a .200 lead ballscrew, but I would think my speed increase would translate to your lead screw.

Anyway, with the same power supply and steppers that came with the Xylotex, I replaced the driver with a G203 (this was my first experience with Gecko so I bought the bullet-proof 203 version instead of the 201). The rapid speed went from 60 IPM to 150 IPM. I would imagine with the proper power supply and current setting (I set it to 2 amps because I figured it was "safe" for the test) the system would SCREAM.

The problem you will find is that torque decreases with speed in a stepper. A 20 TPI lead screw needs to turn quickly to get any sort of speed translation from rotational to linear.

[yngndrw]

Mariss, that looks great.

There's only one point I'd like to raise about the silkscreening of it though:
R = 1k / Amps could mean two things:
1) Resistance is 1k per amp.
2) Resistance is 1k divided by the current.

For example, for 10A:
1) 10k
2) 100Ohms

From what you mentioned in the thread, I think it's 10k for this example, but it is a bit confusing. (To me atleast.)

[phomann]

It's a shame that there isn't a switchable PWM filter on one of the outputs, which with Mach can use the spindle's PWM output to give a 0-10V output. *hint*

Hope that helps.

Hi,
have a look at the DC-05. It is exactly that. Any of the DigiSpeeds should be compatible with the G540.

http://homanndesigns.com/store/index...products_id=38

Cheers,

Peter.

[Mariss Freimanis]

An accepted use of the "/" sign is "per" as in V/KRPM, V/div (oscilloscopes, volts per division), in-oz/Amp, $1.50/lb, etc, etc.

Mariss

[tooManyHobbies]

This is the first assembled G540. It uses a prototype motherboard. The "real" motherboards arrive tomorrow so it looks like late next week for availability.

John at Keling www.kelinginc.net was kind enough to comp us 4 candidate motors:

KL23H256-21-8B
KL23H276-28-4B
KL23H276-30-8B
KL23H2100-30-4B

We will be taking data on these motors using the G540 in the coming weeks. The results will be posted here. These motors seem like they will be a good fit with the G540.

Mariss

Perfect! I was looking at the KL23H276-30-8B, but I can't find out how the 3.0A limit of a G25x would affect the motors' rated current of 4.2A for a bipolar parallel setup? I know it'll lower torque, but is it a linear relationship?

This makes me wonder about selecting stepper motors in general. You've talked about the voltage criteria ([mH^0.5] * 32), but what about the current? Is matching the voltage more important than the current, or vice-versa?

Thanks for all the enlightenment!

Tom

ps Your Exacto knife needs a new blade!

[yngndrw]

Hi,
have a look at the DC-05. It is exactly that. Any of the DigiSpeeds should be compatible with the G540.

http://homanndesigns.com/store/index...products_id=38

Cheers,

Peter.

It's true that there are already aditional products out there to do this, it would just be nice if it was built in.

An accepted use of the "/" sign is "per" as in V/KRPM, V/div (oscilloscopes, volts per division), in-oz/Amp, $1.50/lb, etc, etc.

Mariss

That's very true, but / is also recognized as "divide". It was just an ambiguity that I thought I should point out. (Although it's probably too late to point out.)

[wolfdagon]

This is the first assembled G540. It uses a prototype motherboard. The "real" motherboards arrive tomorrow so it looks like late next week for availability.

John at Keling www.kelinginc.net was kind enough to comp us 4 candidate motors:

KL23H256-21-8B
KL23H276-28-4B
KL23H276-30-8B
KL23H2100-30-4B

We will be taking data on these motors using the G540 in the coming weeks. The results will be posted here. These motors seem like they will be a good fit with the G540.

Mariss

That sounds great that the G540 will finally be available. It looks pretty good, by the way. I expected them to be blue from what was shown earlier, but black is good too.

I look forward to seeing the test results for the motors. Will you be testing them in parallel only, or will you also be testing in series and unipolar?

[acssgt]

Mariss,

I've been silently following this thread for around 4 months, and just thought it was time to put in 2 cents worth of thanks for the education on the electronics math and stepper motor construction insight (I'm primarily a mechanics and production guy).
I'm looking forward to the release of the G540 and will certainly be showing my appreciation for your (and your company/teams) efforts where it counts $$.

Rob

[Teyber12]

This is the first assembled G540. It uses a prototype motherboard. The "real" motherboards arrive tomorrow so it looks like late next week for availability.

John at Keling www.kelinginc.net was kind enough to comp us 4 candidate motors:

KL23H256-21-8B
KL23H276-28-4B
KL23H276-30-8B
KL23H2100-30-4B

We will be taking data on these motors using the G540 in the coming weeks. The results will be posted here. These motors seem like they will be a good fit with the G540.

Mariss

Thats sex on the beach right there... Bravo!

[Kipper]

If that works as well as it looks!..... Beautiful Have a :cheers:

[PeteH]

Has the price been set yet? The tread is so long that I dont have the strenght to read it all

/Peter