Re: [Emc-users] Wanted, small engine whiz

2019-06-07 Thread Dave Cole
Whoops, I meant Onan. Dave On 6/5/2019 9:55 AM, Todd Zuercher wrote: If this is turning into a small engine clinic, I have an old (late '70s vintage) Onan NHCV engine that is giving me huge problems. The "V" in NHCV means that this engine sucks, quite literally in more ways than one. It is

Re: [Emc-users] Wanted, small engine whiz

2019-06-07 Thread Dave Cole
If your Wisconsin throws the seat again... I'd consider the Harbor Freight big V twin they sell. They have been used on smaller skid loaders. Check out youtube. I think with a collection of coupons you can get one for about $600. Dave On 6/5/2019 9:55 AM, Todd Zuercher wrote: If this is

Re: [Emc-users] Wanted, small engine whiz

2019-06-05 Thread Dave Cole
You have at least one issue, perhaps more. 1.  Oil level was over full.     The float in the carb is stuck open which causes fuel to drain into the carb and then into the intake valve, by the piston and into the oil reservoir. It isn't that unusual as I have had this happen on vertical

Re: [Emc-users] Dual boot for WIN-XP and LinuxCNC

2019-06-03 Thread Dave Cole
be in trouble.  But I suspect that they would do what they could to make things right. https://www.machsupport.com/help-learning/software-licensing-info/ Dave On 6/3/2019 12:16 PM, Jon Elson wrote: On 06/03/2019 10:02 AM, Dave Cole wrote:  Mach4 is unknown to me and requires a phone home license

Re: [Emc-users] Dual boot for WIN-XP and LinuxCNC

2019-06-03 Thread Dave Cole
On 6/1/2019 5:01 PM, Peter C. Wallace wrote: The host needs to run the Servo thread (typically at 1 KHz) reliably Yep, and that isn't possible with WinXP.    Mach3 runs a buffered interface to the Smoothstepper. I think there is about 100 ms of buffered data at anyone time. WinXP is

Re: [Emc-users] Increasingly OT: [Was: Re: How come.... --> battery safety due to high current, DC relay

2019-05-26 Thread Dave Cole
There are some good reasons to use a 24 or 48 volt DC bus power system for smaller systems. The chance of electrocution is pretty low for a 48 volt DC system in a dry environment. Once you get above 50 volts or so things change. 24 volts is quite a practical voltage level for smaller systems.

Re: [Emc-users] How come....

2019-05-26 Thread Dave Cole
We still use BTU's for small Furnace and Air Conditioner sizing... For larger units its BTUs for furnaces and Tons of cooling for Air Conditioners. Everyone knows that 12,000 btus is required to melt 1 ton of ice.  Hence 12,000 btus is equal to "one ton" of cooling. Who would have known that

Re: [Emc-users] How come....

2019-05-19 Thread Dave Cole
, then stuff some FWD drivetrain in the "frunk". On Sunday, May 19, 2019, 10:32:52 AM MDT, Dave Cole wrote: I do have to wonder though... if these Tesla cells were no longer usable for a Tesla, why would anyone think they would be good in a stationary application unless they we

Re: [Emc-users] How come....

2019-05-19 Thread Dave Cole
That's what I understood...  I won't be owning a Tesla until that changes. Dave On 5/18/2019 2:50 PM, Bruce Layne wrote: Tesla has adopted the software rental model where the customer doesn't really own anything. ___ Emc-users mailing list

Re: [Emc-users] How come....

2019-05-19 Thread Dave Cole
I do have to wonder though... if these Tesla cells were no longer usable for a Tesla, why would anyone think they would be good in a stationary application unless they were derated by quite a bit. $1200 is far from free. Dave On 5/17/2019 12:24 PM, Kirk Wallace wrote: Here is a fairly

Re: [Emc-users] How come....

2019-05-19 Thread Dave Cole
I do have to wonder though... if these Tesla cells were no longer usable for a Tesla, why would anyone think they would be good in a stationary application unless they were derated by quite a bit. $1200 is far from free. Dave On 5/17/2019 12:24 PM, Kirk Wallace wrote: Here is a fairly

Re: [Emc-users] How come....

2019-05-17 Thread Dave Cole
OK, Buy  a new "cheap" Tesla - about $35,800 right now. Remove the battery pack  ;-) You guys on the west coast make it sound like you have Tesla's sitting on the side of the road with "$500 or best offer" sale signs. We now have 11 supercharger stations in the state of Indiana. If

Re: [Emc-users] How come....

2019-05-17 Thread Dave Cole
s. On Thu, May 16, 2019 at 12:03 PM Dave Cole wrote: https://www.wholesalesolar.com/blog/lead-acid-vs-lithium-batteries/ This solar company wrote up this analysis regarding Lead Acid vs Lithium and generally recommend Lead Acid for off grid residential use. I went through their analysis an

Re: [Emc-users] How come....

2019-05-17 Thread Dave Cole
DC power contactors are available. They are used in Golf Carts, Fork Lifts etc. But you are right, DC arcs are not easy to extinguish, and that can be a problem. BTW, most electric forklifts are still using Lead Acid batteries and many have 5 year warranties on the batteries. Most fork

Re: [Emc-users] How come....

2019-05-16 Thread Dave Cole
could be gone. I'd put the battery bank in an outbuilding.  If something shorts out and the battery bank melts down, the little building may burn but my house won't. Dave On 5/14/2019 2:11 PM, Kirk Wallace wrote: On 5/14/19 9:33 AM, Dave Cole wrote: I've been planning to put up an array

Re: [Emc-users] How come....

2019-05-14 Thread Dave Cole
they failed.  I sure wouldn't want that to happen to $10K worth of Lithium batteries! Weight isn't an issue. Dave On 5/9/2019 10:37 PM, Erik Christiansen wrote: On 09.05.19 10:24, Dave Cole wrote: Erik, Do you have a blog going on your build? Now that's an idea. All I've started is the seeds

Re: [Emc-users] How come....

2019-05-09 Thread Dave Cole
Erik, Do you have a blog going on your build? I'd be very interested in your solar and battery setup for your off-grid home. You must have a substantial setup to be able to run your AC off your battery bank. What do you do for domestic water?  A deep well? Dave On 5/9/2019 5:17 AM,

Re: [Emc-users] Posting order

2019-04-08 Thread Dave Cole
What makes that even easier is to enable HTML email and then not only change colour but also font. The "best" answer, of course, is to embed Javascript in an HTML email to present the data according to the preferences registered by each recipient on an SQLite database hosted on an Amazon AWS

Re: [Emc-users] Fusion 360

2019-03-22 Thread Dave Cole
I work with a shop that does a lot of waterjet, laser, 4 axis mill, and some lathe work and they are using Fusion 360 for their 4 axis mill and lathe they are very happy with it. I've used Fusion 360 to drive a LinuxCNC lathe and it worked fine. It seems like things are moving to the cloud, but

Re: [Emc-users] DIY CNC builder dilemma, open request for comments

2019-02-23 Thread Dave Cole
On 2/20/2019 8:42 AM, Ken Strauss wrote: -Original Message- From: John Dammeyer [mailto:jo...@autoartisans.com] Sent: Wednesday, February 20, 2019 12:07 AM To: 'Enhanced Machine Controller (EMC)' Subject: Re: [Emc-users] DIY CNC builder dilemma, open request for comments My mill is

Re: [Emc-users] 1.5 kw vfd in 6040 problems

2019-01-28 Thread Dave Cole
On 1/28/2019 11:49 AM, Gene Heskett wrote: On Sunday 27 January 2019 19:27:54 Gene Heskett wrote: On Sunday 27 January 2019 17:57:03 Jon Elson wrote: On 01/27/2019 03:28 PM, Gene Heskett wrote: So do I ground the direction desired, or feed it 10 volts? Which the vfd also has available

Re: [Emc-users] 1.5 kw vfd in 6040 problems

2019-01-23 Thread Dave Cole
On 1/23/2019 6:30 PM, andy pugh wrote: On Wed, 23 Jan 2019 at 23:08, Gene Heskett wrote: Near as I can id it, its a PRT-E1500W, but this one may have a longer name. One pcb, sitting on a thick block of alu. The internet seems to be full of people saying that they can't get any useful sort of

Re: [Emc-users] color me pissed

2019-01-14 Thread Dave Cole
Get a copy of Clonezilla and put it on a stick drive and make it bootable. https://clonezilla.org/ It does an effective job of backing up and restoring entire Linux disks without pain via a graphical interface. It can also do baremetal restores as well. I use a little USB plug in Hard drive

Re: [Emc-users] G10 L2 R-90 isn't working?

2019-01-10 Thread Dave Cole
considered a transplant/outsider by the locals. Although they are getting friendlier! :-) But people still say that I talk funny. Dave On 1/10/2019 10:04 PM, Gene Heskett wrote: On Thursday 10 January 2019 19:21:01 Dave Cole wrote: A pacemaker. That's one way to get some new hardware

Re: [Emc-users] G10 L2 R-90 isn't working?

2019-01-10 Thread Dave Cole
A pacemaker. That's one way to get some new hardware! Glad you are back at it. Pacemakers run in my family. They are amazingly durable. Trivia ...Most of the wire used to tie the heart into the pacemakers is made in Fort Wayne, IN. That makes you part Hoosier! :-) Dave On 1/10/2019

Re: [Emc-users] Done with that panel code, with one exception

2018-12-21 Thread Dave Cole
Its hard to beat this price for 3D Cad/Cam which is free for hobbyist and startups making less than 100K per year. https://www.autodesk.com/campaigns/fusion-360-for-hobbyists It requires Window, but its free! I know of a shop that is using Inventor now and they are moving a lot of their work

Re: [Emc-users] No mail received?

2018-10-20 Thread Dave Cole
of it is. There are several articles out there on Boat, Ship and airplane Autopilots being implemented with fuzzy logic. Dave On 10/19/2018 11:20 PM, Gene Heskett wrote: On Friday 19 October 2018 22:36:43 Dave Cole wrote: Here is one I remember. http://www.rentanadviser.com/en/pid-fuzzy

Re: [Emc-users] No mail received?

2018-10-19 Thread Dave Cole
a coolant temp input, current input, etc, etc. and they could all be used to create an output. My advice when reading up on Fuzzy logic;   If it is not understandable, keep looking for an understandable explanation. Dave On 10/19/2018 7:23 PM, Gene Heskett wrote: On Friday 19 October 201

Re: [Emc-users] No mail received?

2018-10-19 Thread Dave Cole
I did the university thing on control theory, but it was a while ago.. more than 30 years..so I'll leave it at that!  :-) If you are researching loop control theory, you should also look at Fuzzy logic controllers. There are some simulator software out there that allow you to compare Fuzzy

Re: [Emc-users] Vacuum table Re: Yet another topic about gantry homing

2018-10-08 Thread Dave Cole
Instead of making bearings I would look at what Igus and others have to sell. They are not that expensive and you have plenty of other things to do. Regenerative Vacuum blowers work well for vacuum hold down work.    They are still power hogs and quite noisy without mufflers on the outputs.

Re: [Emc-users] Yet another topic about gantry homing

2018-10-05 Thread Dave Cole
the pictures) El jue., 4 oct. 2018 a las 12:00, Dave Cole () escribió: I'd avoid a worm gear drive. They are prone to wear and backlash. I'd look for a good deal on a servo grade planetary 10:1 gearbox that fits your Chinese motor. Probably the easiest and most rigid drive solution is to use two

Re: [Emc-users] Yet another topic about gantry homing

2018-10-05 Thread Dave Cole
Chris, Do you have a link for these "new style ball screws" ?? Thanks,  Dave On 10/4/2018 3:33 PM, Chris Albertson wrote: Have you seen the new style ball screws? They are now cheaper then belts and have pretty "over kill" specs. The problem with a 30mm wide belt drive is the need to

Re: [Emc-users] Yet another topic about gantry homing

2018-10-04 Thread Dave Cole
I'd avoid a worm gear drive.   They are prone to wear and backlash. I'd look for a good deal on a servo grade planetary 10:1 gearbox that fits your Chinese motor. Probably the easiest and most rigid drive solution is to use two motors each with a planetary gear box and direct drive a pinion on

Re: [Emc-users] Yet another topic about gantry homing

2018-10-04 Thread Dave Cole
You need to keep the drive system as simple as possible and keep backlash in mind. Also, don't forget about the spring constant of any shaft you run across the gantry.  If you do that, you might want to run a tube drive shaft rather than a solid shaft for more torsional rigidity. There is

Re: [Emc-users] OT: motor usage

2018-10-03 Thread Dave Cole
explore the drive. If I can get a direct/ and belt set-up with 1:1 and 1:3 I'll be quite happy. On Wed, 3 Oct 2018 at 16:36, andy pugh wrote: On Wed, 3 Oct 2018 at 15:05, Dave Cole wrote: I would find the original drive specs for that motor. I'm sure they had a matching drive for it. I think

Re: [Emc-users] Yet another topic about gantry homing

2018-10-03 Thread Dave Cole
You will probably need two reduction stages to get a 10:1 belt drive reduction. There are some fairly cheap servo motor gear boxes out there now being made in China. That may be the cheaper/easier way to go. FWIW, 1 KW servo motors x 2 is probably an overkill unless you want to go really fast

Re: [Emc-users] OT: motor usage

2018-10-03 Thread Dave Cole
I would find the original drive specs for that motor.  I'm sure they had a matching drive for it. The specs for that drive/motor combo should specify the max speed of the motor with that particular drive along with the torque vs speed curve. It may be 2x the rated speed but at reduced

Re: [Emc-users] update version on working machine

2018-08-24 Thread Dave Cole
THIS is the safest way to upgrade a running system: Make multiple partitions. No, that's definitely not the safest way. Jon's right. Swap hard drives. You can't screw up something that's not plugged in! If you don't want to do that, then at least image the drive to another device, like

Re: [Emc-users] Faro Arm

2018-08-18 Thread Dave Cole
Looks interesting. If I didn't already have a backlog of projects! That should be plenty precise for many things. What's the alternative?   Scales, tape measures, laser levels? Any idea how much the official Faro PC card and software costs? Or if it is even available any longer? Dave On

Re: [Emc-users] Fwd: Re: Linuxcnc vs Mach3 for Plasma Cutter?

2018-08-15 Thread Dave Cole
On 8/14/2018 10:28 PM, Dan Bloomquist wrote: That is the catch. Mach3 will glitch, especially if you switch apps while it is running. That can cause expensive booboos. Correct, you can't do that.  Also you can't insert and unplug USB drives while running, don't open a browser and listen to

Re: [Emc-users] Linuxcnc vs Mach3 for Plasma Cutter?

2018-08-14 Thread Dave Cole
Mach3 is now pretty old. Is there a legit license installed with the software? Oftentimes machines were shipped with a demo license only. (limited Gcode support) CandCNC used to sell a lot of Mach3 software with their systems. Go look at their site now. If it works... why change it?  Chances

Re: [Emc-users] Bldc commutatation

2018-08-14 Thread Dave Cole
On 8/14/2018 10:02 AM, andy pugh wrote: So, we have all lost interest in commutation now and I can stop following this thread? Sorry, I think I assisted in sending this message thread into the ditch.  :-/ I suspect the original issue still exists. Dave

Re: [Emc-users] Bldc commutatation

2018-08-14 Thread Dave Cole
the attacks very effectively.  So I am ok with their security. Dave On 8/14/2018 2:42 AM, Gene Heskett wrote: On Monday 13 August 2018 22:24:26 Dave Cole wrote: Is not you.  The links are wrong. Is this intentional on the part of google? Answer is obvious. In Google drive, if you right click

Re: [Emc-users] Bldc commutatation

2018-08-13 Thread Dave Cole
Is not you.  The links are wrong. In Google drive, if you right click the document and click share link, it will copy the share link to the clipboard. Then paste into your email. Dave On 8/13/2018 10:06 PM, Gene Heskett wrote: On Monday 13 August 2018 21:52:44 jeremy youngs wrote: I loadrt

Re: [Emc-users] Possibly useful keyboards

2018-08-03 Thread Dave Cole
for underwater photography 30-40 years back and for sure all my domes where fixed with screws and appropriate washers. /Bengt Den 2018-08-03 kl. 18:01, skrev Dave Cole: >>screws are forbidden You just have to be careful.  Don't over tighten the screws. Use washers, etc. They make drills specif

Re: [Emc-users] Possibly useful keyboards

2018-08-03 Thread Dave Cole
for underwater photography 30-40 years back and for sure all my domes where fixed with screws and appropriate washers. /Bengt Den 2018-08-03 kl. 18:01, skrev Dave Cole: >>screws are forbidden You just have to be careful.  Don't over tighten the screws. Use washers, etc. They make drills specif

Re: [Emc-users] Possibly useful keyboards

2018-08-03 Thread Dave Cole
4 Dave Cole wrote: On 8/2/2018 1:32 PM, Gene Heskett wrote: On Thursday 02 August 2018 12:37:36 Dave Cole wrote: Why not put a standard keyboard into a plexiglass box with an open side towards the operator? You can still see the keys if needed if you make it out of clear plexi.   A sheet of 1/4&

Re: [Emc-users] Possibly useful keyboards

2018-08-02 Thread Dave Cole
On 8/2/2018 1:32 PM, Gene Heskett wrote: On Thursday 02 August 2018 12:37:36 Dave Cole wrote: Why not put a standard keyboard into a plexiglass box with an open side towards the operator? You can still see the keys if needed if you make it out of clear plexi.   A sheet of 1/4" plexi, a

Re: [Emc-users] Possibly useful keyboards

2018-08-02 Thread Dave Cole
Why not put a standard keyboard into a plexiglass box with an open side towards the operator? You can still see the keys if needed if you make it out of clear plexi.   A sheet of 1/4" plexi, a table saw, and some plexi glue is all you need. When it gets scratched up, make another one, or

Re: [Emc-users] Grounding

2018-07-16 Thread Dave Cole
I agree. Also, its worth finding  a steel cabinet for your control system. They aren't cheap new, but used ones can be picked up for not much more than scrap value if you find a surplus dealer. I've witnessed the aftermath of drive melt downs and circuit failures and its amazing how much

Re: [Emc-users] Grounding

2018-07-16 Thread Dave Cole
ual to Gnd Many systems will have multiple 5V power lines, heavy, light, designated. Do you want to link all those up too? On 13 July 2018 at 18:05, andy pugh wrote: On 13 July 2018 at 16:52, Dave Cole wrote: That's pretty much standard these days. I'm not making this stuff up. That's

Re: [Emc-users] Grounding

2018-07-16 Thread Dave Cole
On 7/13/2018 12:05 PM, andy pugh wrote: On 13 July 2018 at 16:52, Dave Cole wrote: That's pretty much standard these days. I'm not making this stuff up. That's how its done. I think that there is still some confusion out there. I used to work for a company making specialist test equipment

Re: [Emc-users] Grounding

2018-07-13 Thread Dave Cole
Each panel has its own star grounding setup, then panels are bonded between each other with a heavy cable. That's pretty much standard these days. I'm not making this stuff up.   That's how its done. When we are talking about "modules", I am talking about industrial steel control panels. 

Re: [Emc-users] Grounding

2018-07-13 Thread Dave Cole
, Dave Cole wrote: Typically in a multi-panel control system setup there is a ground bar in each panel. The incoming AC power ground is tied to this and the 24 volt power supply negative is tied to the local ground bar just as I described before. If all of these panels are on a common machine

Re: [Emc-users] Grounding

2018-07-12 Thread Dave Cole
this question raises. We haven't even discussed the electrical noise issues coupled through the lowest impedance path. John -Original Message- From: Dave Cole [mailto:linuxcncro...@gmail.com] Sent: July-12-18 2:57 PM To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users

Re: [Emc-users] Grounding

2018-07-12 Thread Dave Cole
Agreed, I have never seen a high voltage DC drive bus leg connected to ground.  That could cause all kinds of problems! Dave On 7/12/2018 5:31 PM, andy pugh wrote: On 12 July 2018 at 20:12, John Dammeyer wrote: Is it standard practice to connect the DC Servo and DC Instrumentation Bus to

Re: [Emc-users] Grounding

2018-07-12 Thread Dave Cole
I think you need to define what you mean by "grounding". If you have a 24 volt DC powered control system, like an industrial control panel, typically the 24 volt DC power supply/s will tie the 0V terminal on the power supply to frame/panel ground.   These are the big 10, 20, 40 amp 24 volt DC

Re: [Emc-users] Grounding

2018-07-12 Thread Dave Cole
Normally, a single ground point is established in the cabinet and all of the grounds tie to that one point. The same point is also tied power line ground. The multi hole bus bars they sell for use in a AC power breaker boxes work well for this. Every big box home store will have a selection

Re: [Emc-users] OT: Question about steel for cold forming

2018-07-10 Thread Dave Cole
So these need to be hardened after cold forging ? You want them to have a max 25 HRc after forging and prior to heat treatment? Dave On 7/10/2018 11:54 AM, Leonardo Marsaglia wrote: Hello to all. I'm trying to figure out wich is the best material for making cold formed bolts wich need to

Re: [Emc-users] brushless sewing machine motors

2018-07-10 Thread Dave Cole
Just run it off 220. Or if not easily available, pickup a used 240 to 120 large control transformer and run it backwards. They are not hard to find.   500 and 1000 va is a very common size.   Check Ebay or surplus industrial/electrical deals near you. Dave On 7/9/2018 2:27 PM, Ralph Stirling

Re: [Emc-users] brushless sewing machine motors

2018-07-09 Thread Dave Cole
I have some industrial sewing machines. Some of the cheap brushless motors have a reputation for poor low speed torque. However some of the higher end brushless motors are apparently ok. Check out the motors available from Sailrite.com. If you do some digging you will realize that Consew (a

Re: [Emc-users] OT: Wire feeder on screw forging machine

2018-07-02 Thread Dave Cole
Oftentimes I have seen just a couple of grooved pinch rolls used - aka like a mig welder wire feeder.   It really depends on how much drive force you need.  If you pinch the wire too hard it will deform and extend.   So for more drive force, use more drive rollers.    You can use gears to

Re: [Emc-users] Fwd: shipping

2018-06-22 Thread Dave Cole
FYI, if you use Stamps.com the shipping rates are pretty much identical to Ebay and if you create a shipping label online with USPS, those rates are very close to the Ebay rates as well.    All of these rates are cheaper than if you ship by visiting a USPS office/Post Office. So if you want

Re: [Emc-users] Water or Air cooled spindles

2018-05-24 Thread Dave Cole
radiator from a junked car would make a perfect cooling tank and heat radiator. Ken On Wed, May 23, 2018 at 8:01 AM, Dave Cole <linuxcncro...@gmail.com> wrote: RV antifreeze works well for things like this. I have been using it for years in my bandsaw coolant tank. It doesn't seem to go ba

Re: [Emc-users] Water or Air cooled spindles

2018-05-23 Thread Dave Cole
RV antifreeze works well for things like this.  I have been using it for years in my bandsaw coolant tank.  It doesn't seem to go bad even after years and it doesn't evaporate much. For cooling, You might want to consider making a flat tank.  Two sheets of steel or alum spaced apart an inch

Re: [Emc-users] Going off-grid [Was: Thinking about going off-line eventually.

2018-04-17 Thread Dave Cole
On 4/16/2018 9:43 PM, Jon Elson wrote: On 04/16/2018 10:43 AM, Dave Cole wrote: If you want to get fancy, you can chill water with heat using an ammonia absorption system (chiller).   That's what hospitals and many large commerical buildings use for air conditioning.    But they get complex

Re: [Emc-users] Going off-grid [Was: Thinking about going off-line eventually.

2018-04-16 Thread Dave Cole
I've had a open loop ground water heat pump in my house for 22 years.   I'm ripping it out soon since they just ran natural gas down the road.  I travel for work, and I need  a system that works very reliably.   Ground water heat pumps can be high maintenance. PM me if you want to discuss. I

Re: [Emc-users] Monitoring coolant level

2018-04-12 Thread Dave Cole
Andy, it sounds to me like you need to further automate the coolant refill process, with a pump and a remote bulk tank.  :-) Dave On 4/12/2018 2:37 PM, andy pugh wrote: It isn't easy to get to the coolant tank on my mill (because the tool cart is there) so I top up the coolant by pouring it

Re: [Emc-users] Large servo selection

2018-04-12 Thread Dave Cole
On 4/12/2018 6:09 AM, andy pugh wrote: On 11 April 2018 at 15:30, David Berndt wrote: I'm looking to output about 1000lbf in a linear direction via a crank/slider or ballscrew with peak speed of about 1m/s. Have you considered hydraulics? (Or possibly even pneumatics).

Re: [Emc-users] Large servo selection

2018-04-11 Thread Dave Cole
Consider using a timing belt drive. Not exactly a timing belt, but a cogged tooth belt.  They make cogged tooth belting specifically for linear actuators. You can buy it several inches wide so 6 hp would not be a problem.   I did a servo drive setup to propel a machine carriage with such a

Re: [Emc-users] Large servo selection

2018-04-11 Thread Dave Cole
How much time/work do you want to put into this motor/drive setup? There are no really cheap large servo motor solutions unless you stumble into a deal on Ebay or a surplus marketplace. Larger servos generally mean 3 phase inputs.   So that becomes an immediate issue. If you can live with a

Re: [Emc-users] One servo system

2018-03-28 Thread Dave Cole
Many Digital servo drives can be configured for simple motion moves via their internal logic. Automation Direct and Teco servo drives can do that.   You can trigger the motion with digital I/O.   The motion is basic but that may be all you need. Dave On 3/28/2018 11:15 AM, Marius Liebenberg

Re: [Emc-users] USB wifi dongle

2018-03-23 Thread Dave Cole
I've had excellent luck with the TP-Link TL-WN722N with Linux. No drivers or Linux hacking required. I think they have a newer model and I have no experience with that one. I bought three of these when they were about $12.00 each for a while. Its a plug and go on every Linux box I have. Dave On

Re: [Emc-users] non-contact position sensors, surprisingly good performance.

2018-01-24 Thread Dave Cole
On 1/24/2018 7:38 PM, Chris Albertson wrote: On Wed, Jan 24, 2018 at 4:06 PM, Dave Cole <linuxcncro...@gmail.com> wrote: That is likely an unshielded prox switch. That means that the sensing pattern is a blob that sits right at the base of the plastic tip, not above it. That

Re: [Emc-users] non-contact position sensors, surprisingly good performance.

2018-01-24 Thread Dave Cole
That is likely an unshielded prox switch.  That means that the sensing pattern is  a blob that sits right at the base of the plastic tip, not above it. That means that they can also sense to the side of that plastic tip as well.   You need to be careful that you don't have any metal next to the

Re: [Emc-users] 240V single phase input vfd

2018-01-03 Thread Dave Cole
Looking on Ebay there are some drives clearly marked Huan Yang on the pictures and then there are other drives that are not marked that appear identical in the pictures yet they are quite a bit cheaper. Andy, do you have a real Huan Yang drive with the braking circuitry or do you have a clone

Re: [Emc-users] 240V single phase input vfd

2018-01-03 Thread Dave Cole
Did you have to put a choke or filter on the incoming power to mimimize EMI ?? That's a good reference! Any issues with that drive? Thanks, Dave On 1/3/2018 11:56 AM, andy pugh wrote: On 3 January 2018 at 16:03, Dave Cole <linuxcncro...@gmail.com> wrote: So... is anyone going

Re: [Emc-users] Ethercat servo drive profile

2018-01-03 Thread Dave Cole
OK, I just applied for membership at Ethercat.org Hopefully they approve it and quickly. I'll let you know. Dave On 1/3/2018 12:03 PM, Nicklas Karlsson wrote: On Wed, 3 Jan 2018 11:19:55 -0500 Dave Cole <linuxcncro...@gmail.com> wrote: On 1/2/2018 5:31 PM, Nicklas Karlsson wrote: pe

Re: [Emc-users] Ethercat servo drive profile

2018-01-03 Thread Dave Cole
On 1/2/2018 5:31 PM, Nicklas Karlsson wrote: periodic data in position control mode I can't find any format data for position control mode on the Beckoff website... Can you send me a link that is blocking you with a sign in ?? Are you sure you don't just want the standard from the

Re: [Emc-users] 240V single phase input vfd

2018-01-03 Thread Dave Cole
On Tuesday, January 2, 2018, 9:33:50 AM MST, Dave Cole <linuxcncro...@gmail.com> wrote: So what exactly do they do when the bus voltage rises during decel ?? Or is there no decel control at all? I've never seen a drive without braking

Re: [Emc-users] Ethercat servo drive profile

2018-01-02 Thread Dave Cole
On 1/2/2018 4:08 PM, Nicklas Karlsson wrote: I am not able to register as a user at Beckhoff Why not? I'm already signed up. What are you looking for?  I can do some digging. Dave -- Check out the vibrant tech

Re: [Emc-users] 240V single phase input vfd

2018-01-02 Thread Dave Cole
So what exactly do they do when the bus voltage rises during decel ??  Or is there no decel control at all? I've never seen a drive without braking circuitry and DC bus voltage control. Dave On 1/2/2018 11:07 AM, John Figie wrote: That would be a poor design if no braking resistor causes it

Re: [Emc-users] 240V single phase input vfd

2018-01-02 Thread Dave Cole
finicky. John Figie On Jan 2, 2018 8:03 AM, "Dave Cole" <linuxcncro...@gmail.com> wrote: Except that he needs a 5 hp single phase inverter. Those are a little harder to find and a lot more expensive... near $1000 for this AC Tech Drive. https://www.wolfautomation.com/produ

Re: [Emc-users] 240V single phase input vfd

2018-01-02 Thread Dave Cole
Except that he needs a 5 hp single phase inverter.   Those are a little harder to find and  a lot more expensive... near $1000 for this AC Tech Drive. https://www.wolfautomation.com/products/ac-drives/ac-drive-5hp-208-240vac-1-3-phase-input Phase converters do have some phase current balance

Re: [Emc-users] 240V single phase input vfd

2018-01-01 Thread Dave Cole
any VFDs of 5hp or higher rated for operation from a single phase. Here is what I have found so far listed on a spreadsheet. https://docs.google.com/spreadsheets/d/1YS- QKbJIlBYDSPdWAelA6ZF0zbS30HrHn qE02-opSRI/edit?usp=sharing If anyone knows of other options please let me know. John Figie On Mo

Re: [Emc-users] 240V single phase input vfd

2018-01-01 Thread Dave Cole
I have heard that sometimes you can get around that by putting  a motor run capacitor between one of the live phases and the unconnected input power terminal. That can sometimes trick the drive into thinking that it has power at all of the terminals. Back when VFDs were very expensive the way

Re: [Emc-users] Ethercat LAN9252 (in SPI mode) (chip manufacturer not optimal choice, why??)

2017-12-24 Thread Dave Cole
Wow... that's great! Dave On 12/24/2017 6:44 AM, Nicklas Karlsson wrote: I just got SPI started on my Ethercat LAN9252 board. It turned out SPI MISO where configured twice. For some reason I think almost all manufacturers choose to configure by pin so for peripheral input pins it is

Re: [Emc-users] Ethercat SOEM, LAN9252

2017-12-17 Thread Dave Cole
So you are using this https://openethercatsociety.github.io/doc/soem/index.html What eepromtool are you using? Dave On 12/17/2017 11:15 AM, Nicklas Karlsson wrote: I got a simple Ethercat board with a LAN9252 chip and SPI interface. The chip seems to work although SOEM and eepromtool

Re: [Emc-users] Ethercat master --> DieBieSlave LAN9252

2017-12-16 Thread Dave Cole
I used Twincat3 but have no idea what it does to scan the network and then connected to switch Wireshark do no spot any Ethercat packets. That is really odd.  It seems to me that it would be really helpful to be able to see TwinCat initialize the secondary via Ethernet if you can grab the

Re: [Emc-users] Ethercat master --> DieBieSlave LAN9252

2017-12-14 Thread Dave Cole
I would plug into the device directly, without a switch in the middle. Dave On 12/13/2017 4:19 PM, Nicklas Karlsson wrote: The lights do not turn on the switch port that your Ethercat device is plugged into? Light turn on both on LAN9252 card and switch. Did you install TwinCat 2 or TwinCat

Re: [Emc-users] synchronized servo motors with phase control

2017-12-13 Thread Dave Cole
I doubt this will be an issue.  I did an application a while back (years) incrementing a position in hal for a linear drive that was actually a chain loop.  So the servo motor always ran in the same direction.    Rollover of the position counter was brought up then and calculations were made.

Re: [Emc-users] Ethercat master --> DieBieSlave LAN9252

2017-12-13 Thread Dave Cole
On 12/12/2017 2:40 PM, Nicklas Karlsson wrote: I have installed and try to figure out how to scan Ethernet network for Ethercat devices. I connected to a switch but LEDs do not come on so I guess something is wrong. On Tue, 12 Dec 2017 09:50:02 -0500 Dave Cole <linuxcncro...@gmail.com&g

Re: [Emc-users] Ethercat master --> DieBieSlave LAN9252

2017-12-12 Thread Dave Cole
FWIW, the Twincat software is a free download. Dave On 12/11/2017 2:39 PM, Nicklas Karlsson wrote: These links provided me with the answer. The EEPROM is supposed to be programmed via Ethernet connector. Beckhoff have special software for this and I also see Twincat system manager, maybe

Re: [Emc-users] Controling Multiple Machines As One?

2017-12-12 Thread Dave Cole
Once you load up a Gcode program into LinuxCNC you can control the start/pause/stop of the program remotely. I've done this via Modbus from a PLC.   Now you can do this via Modbus TCP via Ethernet.  I retrofitted an automatically loaded waterjet years ago.   It feeds sheets of foam onto a

Re: [Emc-users] Working on the Shars backing plate

2017-11-03 Thread Dave Cole
On 11/3/2017 8:22 PM, Gene Heskett wrote: Kidde, after some proding by the feds consumer protection agency, have announced a free replacement of an estimated 37.5 million of the ABC types with plastic handles. Geez..  I have a plastic handled Kidde sitting next to me right now! Thanks, Dave

Re: [Emc-users] Ethercat master (SOEM,

2017-10-27 Thread Dave Cole
-networked drives. Dave On 10/27/2017 2:23 PM, Gene Heskett wrote: On Friday 27 October 2017 13:14:30 Dave Cole wrote: Check out this video - this is 2013 and he is using Ethercat with LinuxCNC. Unfortunately I can't understand him.  :-( https://www.youtube.com/watch?v=yR9rCFavFjU Dave

Re: [Emc-users] Ethercat master (SOEM,

2017-10-27 Thread Dave Cole
Thank you! Dave On 10/27/2017 1:18 PM, Martin Dobbins wrote: He does do some that you might understand  https://www.youtube.com/watch?v=JU2lFg1rwgg Martin From: Dave Cole Check out this video - this is 2013 and he is using Ethercat with LinuxCNC

Re: [Emc-users] Ethercat master (SOEM,

2017-10-27 Thread Dave Cole
Check out this video - this is 2013 and he is using Ethercat with LinuxCNC. Unfortunately I can't understand him.  :-( https://www.youtube.com/watch?v=yR9rCFavFjU Dave On 10/27/2017 6:40 AM, Nicklas Karlsson wrote: I make my own hardware, it's only for fun and I do not intend to earn money on

Re: [Emc-users] Ethercat master

2017-10-24 Thread Dave Cole
What is the cost of an Ethercat chip ? Dave On 10/24/2017 11:48 AM, Nicklas Karlsson wrote: Hardware for master is hard to find because you don't need it. Any normal Ethernet port works. Master is a software-only solution. Time triggered transmit would be useful to get perfect timing and

Re: [Emc-users] Ethercat master

2017-10-23 Thread Dave Cole
I think that all of the big industrial automation suppliers have moved to some variant of Ethernet. Siemens has Profinet, Allen Bradley has Ethernet IP,  Allen Bradley was using Sercos and is moving away from it.   I think that is saying a lot.   I've used Siemens Ethernet solution and it is

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