Hoss's G0704

[bogiestl]

Can I use the RJ45 cable wiring solution with the "Heavy Duty Digital" recipe? And are those items add-on or replacement for the C10 board? Talked to Keling today, and they're actually pushing me toward the "kit."

[hoss2006]

The C35 is the C10 equivalent with the rj45 ports and you can use the C34KLD boards
to connect the other end of the rj45 cables to the digital drivers.
CNC4PC
Hoss

[bogiestl]

You have saved da piddies from da blistas... and the walls from the blistering, due to the foul language... Plans should be here today, doing an order from Speedy Metals, and then Automation Whatever...

[hoss2006]

Yeah, I'm gonna have to get around to changing all my keling links on the websites.
Hoss

[cncmoose]

Hoss,

I've always used servo motors. For the G0704 build I'm thinking about using KL23H2100-50-4B, 570 oz/in.

Voltage, I'm looking at using a 60V or 65V 20A power supply. I'll use KelingInc 906 oz/in for the Z axis and their 8070D digital drivers.

My question is for the 570 stepper. Is 60/65 volts too much for that motor?

If I remember correctly, I believe Marris and others have recommend 10 to 20 times of the stepper voltage rating. If I'm correct the 570 is 3 volts.

Your kit list uses a 48 volt supply. Would that be the highest voltage recommended for that motor?

Thanks!

[hoss2006]

Voltage based on the geckodrive calculation
"square root of the motors inductance multiplied by 32".
That's 50.6 v for the 570. you can run it at more voltage but it will not run better
and will generate much more heat no doubt shortening life.
This chart gives recommended amps and volts for many keling motors.
G0704 Electronics
Also, a 12.5 amp power supply is more than enough for running the mill.
Hoss

[cncmoose]

Voltage based on the geckodrive calculation
"square root of the motors inductance multiplied by 32".
That's 50.6 v for the 570. you can run it at more voltage but it will not run better
and will generate much more heat no doubt shortening life.
This chart gives recommended amps and volts for many keling motors.
G0704 Electronics
Also, a 12.5 amp power supply is more than enough for running the mill.
Hoss

Hoss,
Thank you very much for the information.

cncmoose
Leland

[hoss2006]

I just ordered a pendant from these guys on Ebay and noticed they sell a few little 4th axis'.
Cool thing about a couple of them is they say they use a harmonic drive.
That should mean zero backlash and says 50:1 ratio for good holding torque.
CNC Router Rotational Axis, the 4th Axis, A axis for the engraving machine 1350 | eBay
Would hold a lot better than the one I made years ago.
They also sell one like I made.
Projects 5
Just putting it out there if anyone is looking.
Hoss

[Xnaron]

I just ordered a pendant from these guys on Ebay and noticed they sell a few little 4th axis'.
Cool thing about a couple of them is they say they use a harmonic drive.
That should mean zero backlash and says 50:1 ratio for good holding torque.
CNC Router Rotational Axis, the 4th Axis, A axis for the engraving machine 1350 | eBay
Would hold a lot better than the one I made years ago.
They also sell one like I made.
Projects 5
Just putting it out there if anyone is looking.
Hoss

Very cool... have you read anything about that pendant or just thought you'd try it? I may pick one up as well. The 4th axis is also something I'd like to buy down the road. He also sells this pendant http://www.ebay.com/itm/4-AXIS-CNC-H...item3cbedb952b looks like a good deal for $66.99 with free shipping.

Just noticed they have a wireless version as well http://www.ebay.com/itm/3-axis-wirel...item3cc06f7055

[hoss2006]

It's like the one ShuttleRU made but this one isn't wireless, I have enough things that need batteries already.
There are a few chinese places selling pretty much the same thing.
This vid shows Salecnc's wireless version.
Hoss

http://www.youtube.com/watch?v=hRd1zSRFp50&list=UUvAa1b_0J7ktyShkoTioJ_A& index=1&feature=plcp]Wireless MPG Mach3 Handwheel Pendant - YouTube

[Xnaron]

oh boy now I really want one... the wireless one says 15M range and 2aa batteries should last 3 months. My only concern with the wireless is that if there is rf interference that it does not do something unexpected on the mill. I would hope the communication would be digital with error correction.

[Xnaron]

no self restraint here... I bought the wireless version

[MRM RCModels]

I just ordered a pendant from these guys on Ebay and noticed they sell a few little 4th axis'.
Cool thing about a couple of them is they say they use a harmonic drive.
That should mean zero backlash and says 50:1 ratio for good holding torque.
CNC Router Rotational Axis, the 4th Axis, A axis for the engraving machine 1350 | eBay
Would hold a lot better than the one I made years ago.
They also sell one like I made.
Projects 5

Just putting it out there if anyone is looking.
Hoss

Damn it Hoss I just got used to my Sherline 4th axis. This one looks like a game changer.

[hoss2006]

Haha, hey, it's only money.
Hoss

[wizard]

That being said I might be inclined to use something like that. I just wouldn't put anything valuable in front of the tool.

It may be exceptionally reliable but working in industry we are constantly battling RF interference from cell, WiFi and two way radios. Latched sensors or false triggers happen way to much, note though these are often caused by the RF transmitting devices. In some cases this requires posting signs around sensitive machines. The worst part is that some failures are very predictable and others very hard to reproduce.

So in the end you need to watch out for false triggers on inputs. Taking good care with your conversion wiring helps a lot though. Use good shielded wiring following good grounding practices, this goes a very long way to eliminating issues.

oh boy now I really want one... the wireless one says 15M range and 2aa batteries should last 3 months. My only concern with the wireless is that if there is rf interference that it does not do something unexpected on the mill. I would hope the communication would be digital with error correction.

[rowbare]

While I see the attractiveness of a wireless controller, I don't know if I would be too keen to use one on a machine that can remove body parts. Just sayin...

bob

[LeeWay]

My experience with a wireless keyboard was a bad one. When the batteries started getting weak, the input of the keypress made it through to the computer, but the release of the button did not. The result is a crash.

The only thing wireless I use on a cnc machine is me.

[hoss2006]

The only thing I will likely do is replace their what looks like 100 foot usb cable
with a 6 foot coiled one I have laying around.
I'm gonna be in the same room as the mill when I use the pendant.
Hoss

[Titaniumboy]

Hoss,
Why did you chosose the eBay pendant at $165 delivered as compared to the ShuttleRU? Wasn't the ShuttleRU less expensive?

Titaniumboy

[hoss2006]

Hoss,
Why did you chosose the eBay pendant at $165 delivered as compared to the ShuttleRU? Wasn't the ShuttleRU less expensive?

Titaniumboy

The new shuttleRU has a much cooler screen but was $275 shipped.
A basic DRO screen will do me fine.
Hoss