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Messages - Bob Braeking

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21
Forgive me for the rounding error.  The figure is 186,282.4 statute miles per second.  Or more precisely 299,792,458 meters per second.  As long as I am exaggerating to make a point the least I could be is precise.  Point taken.

22
Hey.  It may be old but it is adequate for the CNC.  I need to upgrade but I'm waiting for the deals after the holidays.  My restriction is that I cannot run ANY other programs when the CNC is running.

23
I would prefer the ethernet as the usb only has one tx-rx channel.  Electrons move at 186,000 miles per second and my processor operates at 3.7 mhz.  How quickly do you want things to happen?  The smooth stepper is an external controller if you will that emulates the PP signals.  A PP is limited in the number of I/O's it can transmit and receive.  The ethernet smooth stepper emulates 3 PP's simultaneously.  It is also possible to run Mach3 on a 64bit machine using this card.

24
You can get either a usb or ethernet smooth stepper and breakout board from cnc4pc.com.  cost is about $400

25
General Mach Discussion / Re: X axis will ONLY move in one direction
« on: September 23, 2013, 05:15:48 PM »
Your parallel cable should be getting 5v.  Computers use 12v and 5v out of the power supply.  Check power supply output in the computer at an un-used plug.  If not delivering 5v your power supply is bad.  If that is good and the parallel is only outputting 3.3 then the Parallel card is bad.  It may have an output adjustment pot on the card.  Some parallel cards are not as good as others.  Printers don't care too much about output voltage.  Your machine should be using a break out board.  My board is an isolated board so the parallel only operates an opto-switch.  The board has its own 5v power supply which drives the motor drivers.  Running 3 or 4 motor drivers may be too much for your parallel card.

26
General Mach Discussion / Re: Huanyang VFD & Spindle Warranty Problems
« on: September 15, 2013, 01:51:30 AM »
The green wire absorbs the RF from the 3-phase.

27
General Mach Discussion / Re: Huanyang VFD & Spindle Warranty Problems
« on: September 14, 2013, 07:19:31 AM »
Gene8522,

I do not have a problem with using SJO 16/4.  The important thing is to USE all 4 conductors and send the green wire back to the bonded ground in the power  distribution box.  It should absorb most of the RF generated by the 3-phase.  Air separation between control wiring and the VFD wiring is important as well.  DO NOT run them in the same cable chase as convenient as it may be.  I got my 16/4 at Bay Electric in League City.  You will not find it at your local home center.  So many people use 3-conductor wiring and that is what causes problems.  The green wire is important otherwise there would not be a 4th terminal on the spindle.  

I live in Santa Fe.  If you are close enough I may be able to put some fingerprints on your machine and try to solve your problems.

Bob

28
General Mach Discussion / Re: Spindle Speed Issues W/ Mach3
« on: September 12, 2013, 04:32:37 AM »
Check that motor is tuned properly in config/motor tuning/spindle.  Either steps per or velocity needs tweaking.  Also your BOB may be a bit different.  Make sure you are getting full voltage out of your BOB.

29
General Mach Discussion / Re: Huanyang VFD & Spindle Warranty Problems
« on: September 12, 2013, 04:20:15 AM »
I suspect that you are doing something wrong.  2 in a row is unusual.  Got my spindle from www.buildyourcnc.com in Katy, TX.  Good folks and stand behind product.  I am using 16/4 SJO for cable between VFD and spindle.  You need at least #18 wire but I always up one gauge when the wire is constantly in motion.

30
General Mach Discussion / Re: X axis will ONLY move in one direction
« on: September 12, 2013, 04:06:40 AM »
Check for loose Dir connection between BOB and motor driver.  I had the same problem with my Z and it was a loose wire.

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