Back
[00:00:25] <Jymmm> JT-Shop: welding them?
[00:00:58] <JT-Shop> yea, building a tank from scratch
[00:01:15] <Jymmm> how do you have pinoles in new material/
[00:01:19] <Jymmm> ?
[00:01:36] <Jymmm> pin holes*
[00:02:42] <JT-Shop> in the crappy welds because someone didn't prep the material correctly
[00:02:56] <Jymmm> ah
[00:04:56] <Tom_itx> who'd you hire to do that job anyway?
[00:05:39] <JT-Shop> $5 says that guy preps the top better
[00:05:55] <JT-Shop> some dumbasslazyguy
[00:06:17] <Tom_itx> fix it with a dremel
[00:06:23] * Tom_itx snickers a bit
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[00:14:52] <CaptHindsight> JT-Shop: have you used the DirectLogic series of PLC's from Koyo and
http://www.automationdirect.com/adc/Shopping/Catalog/Programmable_Controllers/DirectLogic_Series_PLCs_%28Micro_to_Small,_Brick_-a-_Modular%29
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[00:30:12] <Tom_itx> is there a better place to get drive pulleys than stock drive products?
[00:30:19] <Tom_itx> 'timing belts'
[00:35:50] <CaptHindsight> just another option
http://pic-designcatalog.com/cgi-bin/lansaweb?srve=SUBCAT+F%28LW3CATURL%29=BELTS_AND_PULLEYS
[00:36:46] <CaptHindsight> http://www.bbman.com/catalog/category/root
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[00:50:13] <Valen> anybody know if you can get diamond grit coated carbide tools?
[00:50:27] <Valen> I need to cut a lot of glass and be very detailed about it
[00:51:52] <Tom_itx> http://niagaracutter.com/solidcarbide/diamond/index.html
[00:52:22] <Valen> yeah thats diamond coated carbide
[00:52:42] <Tom_itx> is that what you're looking for?
[00:52:44] <Valen> I was after something like a standard burr with lots of big hunks of diamond in it, but using carbide for backing
[00:53:19] <Valen> ok google image search for diamond burr is scary
[00:53:37] <Valen> this kinda thing
http://image.made-in-china.com/2f0j00JBmaCopnMvrD/10PC-Diamond-Burr-Set-HK-BR11-.jpg
[00:53:41] <CaptHindsight> http://www.ebay.com/itm/like/360484089869?lpid=82 like these?
[00:53:59] <Tom_itx> http://www.crystallume.com/html/catalog.html
[00:54:01] <Tom_itx> maybe
[00:54:43] <Valen> yes, like those, CaptHindsight, the issue is most of those are stainless shafts which harden and snap after an hour or so of use
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[00:54:49] <Tom_itx> http://www.gesswein.com/c-77-burs.aspx
[00:54:52] <Tom_itx> there you go
[00:55:00] <Tom_itx> for metal and glass work
[00:55:08] <Valen> yes, those are carbide burrs
[00:55:12] <Valen> not with diamond
[00:55:30] <Tom_itx> they advertise diamond
[00:55:34] <Valen> nobody seems to mix the two
[00:55:45] <Tom_itx> Diamond coated burs for metal and glass work.
[00:56:12] <Valen> they dont say what their tool material is though
[00:56:13] <CaptHindsight> maybe look for dental as well
[00:56:19] <Tom_itx> yeah
[00:56:21] <Valen> CaptHindsight: thats what I have now
[00:56:27] <Valen> they snap very quickly
[00:56:46] <Valen> not from overload, they are stainless shafts, i believe they work harden
[00:57:21] <Valen> i mean in a dentist they are going to run for like 30 seconds of load before they get tossed
[00:57:29] <Valen> we run cuts that last for like an hour
[00:58:04] <Tom_itx> what about water cooling?
[00:58:12] <Valen> its done under water
[00:58:17] <Tom_itx> hrm
[00:58:39] <Valen> http://www.youtube.com/watch?v=A5j_Y4CwMLM&list=PL0AE03F6956629A6F
[00:59:08] <Valen> the cloud is glass dust in the water
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[01:02:09] <CaptHindsight> after they break is the diamond still attached to the cutting face?
[01:02:21] <Valen> yes, its the shaft that snaps
[01:03:37] <Tom_itx> http://www.maford.com/pdf/metric%20burs.pdf
[01:03:43] <Tom_itx> maybe a possibility
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[01:03:54] <CaptHindsight> http://www.ebay.com/itm/4Pc-Tungsten-Carbide-Diamond-Cut-Milling-Burr-Set-New-/400551166713?_trksid=p2054897.l4275
[01:04:26] <CaptHindsight> nevermind
[01:04:34] <Tom_itx> yeah same thing as mine
[01:04:37] <Tom_itx> diamond cut
[01:04:49] <CaptHindsight> those look like they just have a diamond shape
[01:06:37] <CaptHindsight> http://www.rakuten.com/prod/40-grit-two-step-brazed-diamond-router-bit/226779966.html?listingId=193915803
[01:06:44] <CaptHindsight> 1/4" shaft
[01:06:57] <CaptHindsight> http://www.dkhardware.com/product-7384-bftrb40-40-grit-brazed-flat-tip-diamond-router-bit.html?mr:trackingCode=8BF3F610-CDE0-E111-9B44-001B21BCB944&mr:referralID=NA&mr:device=c&mr:adType=pla&mr:ad=18074701812&mr:keyword=&mr:match=&mr:filter=60257654532&gclid=CI7xt6vPlbwCFc5DMgodyyAAlQ
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[01:07:47] <CaptHindsight> Valen: what dia shaft do your current bits have?
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[01:12:56] <CaptHindsight> http://www.ebay.com/itm/like/130621814269?lpid=82 6mm shaft and says diamond
[01:13:49] <eric_unterhausen> 6 mm rod ends are twice what 1/4" rod ends cost at mcmaster
[01:13:54] <eric_unterhausen> what's up with that?
[01:14:10] <Valen> 1.8mm i believe
[01:14:44] <eric_unterhausen> I wanted to use bike parts that are 6mmx1
[01:14:52] <eric_unterhausen> guess I'm going to have to go to ebay
[01:15:07] <CaptHindsight> http://www.mastertechdiamond.com/
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[01:16:07] <CaptHindsight> they could probably make a batch for you
[01:16:54] <CaptHindsight> I did some work for a co like that years ago, they would make all sorts of low quantity tools with diamonds
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[02:40:39] <pcw_home> more spam on the forum:
[02:40:41] <pcw_home> http://www.linuxcnc.org/index.php/english/forum/49-basic-configuration/27430-think-like-linux-act-like-ups-smile-like-amazon
[02:43:33] <mozmck> I can delete it, should I?
[02:43:53] <Tom_itx> feel free
[02:43:59] <mozmck> I don't know if I can ban a user from posting or not.
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[02:44:07] <Tom_itx> you could warn him
[02:44:17] <Tom_itx> ban is fine with me too
[02:44:19] <Tom_itx> ;)
[02:45:10] <mozmck> hmm, deleted the post and I guess the topic is gone
[02:45:56] <mozmck> unless his account was hacked there's not much chance he's a valid user I would think.
[02:53:03] <pcw_home> thanks and good riddance
[02:53:21] <Tom_itx> cleaned up the tutorials a bit
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[02:53:49] <pcw_home> Fanuc aA1000 encoder working thanks to Asa loaning me one (1e6 count.turn)
[02:55:35] <pcw_home> it actually has 22 bits instead of just 20 you might expect but the last 2 bits are just noise/not monotonic etc
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[03:02:09] <skunkworks> pcw_home: cool!
[03:07:02] <pcw_home> It is pretty impressive (and very hard to move a count at a time)
[03:07:19] <Tom_itx> i bet
[03:07:28] <Jymmm> pcw_home: a REALLY long stick
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[03:20:32] <pcw_home> yep pretty long (one count is less than a .001" motion with a 10 foot stick)
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[03:28:45] <CaptHindsight> http://www.ebay.com/itm/380713886099 10 TON YARD CRANE, this could come in handy for moving machines
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[04:58:57] <tjtr33> JT-Shop, i spent the day with pinholes on a compression tank ( predates HVAC expansion tanks ).
[04:59:03] <tjtr33> Used a product that is water activated epoxy cloth.
[04:59:04] <tjtr33> kneed it under water 12 secs, wrap around tank/pipe/piehole and its rock solid in 20 minutes. hth.
[05:00:49] <tjtr33> CaptHindsight, I've used the koyo's on a 21 posn shuttling carousel ATC. good stuff ( build your own cable they rip you on that part )
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[07:52:50] <MrSunshine> http://www.youtube.com/watch?v=b1RSl1m5AxY this is the setup i want to use to grind my spindle, but how to indicate that the spindle is straight? (the lathe chuck will never rotate at all) =)
[08:01:23] <archivist> for what definition of straight
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[08:02:11] <Deejay> moin
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[08:11:26] <MrSunshine> archivist, that the inner spindle shaft is in lign with the lathe in both planes =)
[08:12:02] <archivist> get an alignment bar
[08:12:18] <MrSunshine> in the spindle shaft?
[08:12:21] <MrSunshine> collet
[08:12:22] <MrSunshine> etc
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[08:13:44] <archivist> http://www.arceurotrade.co.uk/Catalogue/Measurement/Parallels-Angle-Blocks-Test-Bars
[08:13:52] <archivist> bottom of the page
[08:14:30] <archivist> but first is the bed beyond reproach
[08:15:30] <archivist> a test bar turned between centres to check
[08:16:06] <archivist> any bed twist? do you have a proper level
[08:16:39] <archivist> wear, is the saddle low near the chuck
[08:17:16] <MrSunshine> does it realy mater over such a short distance for a ER collet, i want to regrind the spindle that is in the lathe spindle ... so a testbar i guess wont do me any good as the spindle will be in the way :P
[08:17:45] <archivist> cheap ER are not good for testing against
[08:18:54] <MrSunshine> even if they have some runoff they should be quite straight right? and was thinking to use several collets with several bars and even out the tests
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[08:19:16] <archivist> the test bar tell and its use will help you diagnose
[08:19:55] <archivist> the ER chucks I have tried are terrible
[08:20:11] <Jymmm> WHOA 1TB SSD $600 (on sale)
[08:21:09] <MrSunshine> ive checked the bore of my spindle and its off by about 0.08mm and im going to try and correct that without destroying the spindle but that i guess you already know .. problem i have is to get everything in a straight line to eachother, the spindle motor and the grinder =)
[08:21:11] <archivist> the contact length of the collet in the holder is too short to keep it in line,
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[08:21:53] <archivist> dont you want to set it at an angle(morse)
[08:22:51] <archivist> have you checked bearing play yet
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[08:24:29] <MrSunshine> gonna check it some more before i start the grind but gonna set it up in the lathe so its more rigid than where it is right now =)
[08:24:31] <archivist> I ask that as the act of turning in a loose bearing could show that amount of error
[08:26:24] <MrSunshine> archivist, bearings in what? my spindle motor or the lathe? =)
[08:26:52] <archivist> holding the spindle you are measuring
[08:27:46] <archivist> here I ŧhink you may have to get things right in sequence else you may make it worse
[08:29:34] <MrSunshine> =) gonna check more when ig et it in a more rigid setup .. like in the lathe it goes into for grinding, cause atm on my machine its a bit to flexible to check play etc :P
[08:31:27] <archivist> if dont in its own bearings it has to be right, using another lathe is difficult
[08:31:37] <archivist> dont/done
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[08:32:15] <MrSunshine> i have a very hard time to follow what you say :P
[08:32:36] <MrSunshine> the spindle will rotate itself while i grind it, i just use the lathe for holding it in place
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[08:33:39] <archivist> your statement "like in the lathe it goes into for grinding" implied you are taking out of one lathe and grinding in another
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[08:34:24] <archivist> and at the moment I dont know where you think the errors are
[08:34:37] <MrSunshine> archivist, no, sorry .. this is one of those cheap china spindles (router spindles) =)
[08:35:22] <MrSunshine> http://img.b2bage.com/photo/product2/117268/big-3kw-cnc-router-spindle-motor.jpg
[08:36:02] <archivist> ah crappy er nose
[08:36:17] <MrSunshine> yes =)
[08:36:36] <MrSunshine> hehe , hard to help and explain when no one knows what they are helping with :P
[08:40:29] <Jymmm> Um, I think if i walked into a store asking for "blank cassettes", I'd get a lot of deer-in-the-headlight looks...
http://www.frys.com/product/6630354?site=sa:adpages%20page:P6_FRI%20date:012414
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[12:41:07] <jthornton> getting meaningful names without name conflicts and run on is fun in python
[12:45:36] <skunkworks> it is probably an art
[12:46:03] <jthornton> lol, and I'm not an artist
[12:47:19] <jthornton> it is fun learning python, gtk and glade
[12:51:17] <Tom_itx> 9° F
[12:51:42] <jthornton> 7f
[12:51:57] * Tom_itx feels much warmer alread
[12:51:59] <Tom_itx> y
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[13:24:07] <eric_unterhausen> 5F here
[13:24:56] <eric_unterhausen> gotta go into New York to get into negatives today
[13:25:40] * archivist cuddles a mug of coffee to warms his fingers
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[13:33:54] <Tecan> its going to get cold again starting next month
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[14:31:38] * JT-Shop suits up in the carhartt's to take the puppy out
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[14:43:47] <Vq> jthornton: It is an art and it's not constrained to Python.
[14:45:10] <Vq> "There are only two hard problems in Computer Science: cache invalidation and naming things." -- Phil Karlton
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[14:46:06] <archivist> cache too small by one byte, enjoy watching your disk thrash
[14:51:01] <JT-Shop> Vq, I've learned a lot about naming things lately
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[14:56:48] <Vq> namespaces and scopes are your friends
[15:00:40] <archivist> google images is failing me today, old Sheffield comparator, earlier version I think
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[15:16:46] <JT-Shop> namespace I'm not familiar with other than knowing it is there somewhere, self. is my friend in python
[15:21:23] <Jymmm> archivistI dont think it's you. It's been mucking up for a few days now.
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[15:30:34] <archivist> I find the newer shape but not the old shape like I have
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[15:33:32] <archivist> I got mine working a year ago but had lost the lid, started making a wooden replacement, today having a tidy found the original lid, can chuck it back together now
[15:38:23] <pcw_home> "There are only two hard problems in Computer Science: cache invalidation and naming things." -- Phil Karlton
[15:38:25] <pcw_home> I thought it was:
[15:38:27] <pcw_home> "There are only two hard problems in Computer Science: cache invalidation, naming things, and off by one errors"
[15:42:34] <Jymmm> Eh, the joke is missing Floating Point =)
[15:43:33] <Jymmm> assuming off by one is 012 instead of 123
[15:45:02] <archivist> sometimes it morphs to "There are only 10 hard problems in Computer Science: cache invalidation, naming things, and off by one errors"
[15:45:20] <Jymmm> =)
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[16:17:03] <Vq> pcw_home: off by one errors is more common in computer engineering than in computer science though
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[16:30:15] <jdh> there are lots of different off-by-ones though
[16:31:08] <Jymmm> jdh: <---- And off by n^3 too ;)
[16:32:04] <archivist> more fun when you didnt know if 10 was hex binary or octal
[16:36:49] <jdh> 0x10, or 010 would remove some ambiguity
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[17:20:31] <ssi> so my manual mill has developed a tight spot in the X travel, once per rev
[17:20:51] <ssi> pretty severe one... so much so that you can hear the powerfeed slow down when it hits that spot on every revolution of the screw
[17:21:18] <ssi> is that the ways/gibs? or something with the screw?
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[17:22:04] <IchGuckLive> hi all B)
[17:24:07] <IchGuckLive> ssi: what does the dial say in the rev
[17:24:58] <IchGuckLive> <= Today i got lucky owner of a old 32x DVD burner with a open can 500mW diode
[17:25:40] <IchGuckLive> solderd a driver togater and started engraving wood whow what a burn it can go 200mm/min for maybe 5USD parts
[17:26:16] <IchGuckLive> i will test this tomorrw mounted on a DIY so i see how this works out on wood engraving
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[17:46:02] <CaptHindsight> http://www.infoworld.com/apple-macintosh-at-30-special-report seems like it was just yesterday
[17:47:47] <CaptHindsight> I remember one reason we kept our PC's was that there wasn't much available for the Mac's for machine and process control
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[17:49:02] <CaptHindsight> http://www.infoworld.com/apples-first-macintosh-infoworld-product-of-the-year-winner-11485-234814?source=macintosh_30_index check out some of the PC's especially early laptops in the magazine
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[17:50:58] <archivist> ssi, has to be the screw or its bearings
[17:53:17] <CaptHindsight> look at the quality of the drive
http://d3nevzfk7ii3be.cloudfront.net/igi/Q1ifW2jIp4glEexo
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[18:17:06] <uw> hello
[18:19:32] <IchGuckLive> ;-)
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[18:20:56] <uw> http://i.imgur.com/Nuq22Rp.jpg
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[18:23:37] <IchGuckLive> uw she likes holding here hands like that
[18:25:06] <IchGuckLive> someone knows if there is a spacial piktogramm for carpenter
[18:25:25] <uw> it sure seems it IchGuckLive LOL
[18:25:33] <uw> that or it could be the glue
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[18:32:59] <IchGuckLive> someone knows the font linuxcnc ngc is used in
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[18:46:46] <CaptHindsight> IchGuckLive: for jpg or bitmaps to something the laser will etch into wood?
[18:47:56] <skunkworks> I miss the computer shopper...
[18:48:38] <IchGuckLive> CaptHindsight: yes it will
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[19:21:21] <IchGuckLive> im off BYE
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[19:27:40] <tjtr33> i needed to sync some text to some audio ( not karaoke but more bouncing ball for an explanation ).
[19:27:51] <tjtr33> I found something that may be of interest to to docs people.
[19:28:01] <tjtr33> Popcorn.JS is HTML5 ( good for Ubu/Debian/Firefox ) and can sync text to audio, video to video, video to slideshow etc,
[19:28:02] <tjtr33> http://popcornjs.org/ written in JS so I 'spose its OpenSrc
[19:28:28] <tjtr33> nice demo with Linus explaing what an OS is, a video of him synced to a slideshow
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[19:37:56] <tjtr33> this is a great demo of the tool explaining early astronomy
http://client.heliozilla.com/aer/demo_06.html ( greeks answer how big the sun was and how far away is it )
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[19:41:56] <CaptHindsight> I never understood how so much knowledge could be lost or ignored until I witnessed it firsthand here
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[20:18:28] <MarkusBec> http://www.youtube.com/watch?v=arjRtCjI9AQ
[20:22:14] <Tom_itx> repost
[20:23:51] <heathmanc> anybody got a minute to step me through how to set up my signal to a vfd using the abs module?
[20:24:53] <heathmanc> i have a 7i48 and have chosen pwm output type 2
[20:25:08] <heathmanc> and have two pins that i have designated cw and ccw
[20:27:49] <Tom_itx> requires 2 pins?
[20:28:13] <Tom_itx> _ cw - ccw
[20:28:36] <heathmanc> it is a wj200 hitachi vfd, it has options for 2 pins
[20:28:46] <heathmanc> so a 0-10 and direction pins
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[20:31:34] <heathmanc> and damned if the internet didn't just die and come back
[20:32:48] <heathmanc> i really don't think i have to have the pins for direction
[20:32:57] <heathmanc> I am only going to run it CW
[20:33:20] <heathmanc> but the 7i48 outputs +-10
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[20:36:45] <jdh> is there a seperate on/off, or do the direction pins turn it on?
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[20:37:26] <heathmanc> dir pins turn it on from what i can tell
[20:38:29] <PCW> you need to add an absolute component
[20:39:05] <heathmanc> That's what I gather
[20:39:22] <PCW> it will take the signed spindle speed, give you absolute spindle speed and a direction bit
[20:40:30] <heathmanc> I am just really unfamiliar with adding the component
[20:41:45] <PCW> You can get the CW and CCW signals from motion
[20:42:18] <heathmanc> I have that all taken care of in pncconf, just have to load the abs module
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[20:42:33] <heathmanc> loadrt abs count=1
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[20:43:26] <PCW> addf abs.0 servo-thread
[20:44:58] <heathmanc> can that be added postgui?
[20:45:53] <PCW> in main hal file
[20:45:58] <heathmanc> done
[20:48:23] <heathmanc> the pncconf already added this line
[20:48:24] <heathmanc> loadrt abs names=abs.spindle
[20:48:45] <heathmanc> addf abs.spindle servo-thread
[20:49:24] <PCW> related thread on forum:
[20:49:24] <heathmanc> net spindle-vel-cmd => abs.spindle.in
[20:49:26] <PCW> http://www.linuxcnc.org/index.php/english/forum/38-general-linuxcnc-questions/17444-7i33-pwmgenvalue-question
[20:51:49] <heathmanc> from the looks of it, the pncconf already loads the module and removes the sign
[20:54:22] <heathmanc> how is the scale set up? 0-10v for 10v=24k rpm
[20:56:19] <PCW> pwmscale will be 24000 (or -24000) not sure
[20:58:02] <PCW> (assuming the spindle speed is 24000 at 10V)
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[20:59:14] <heathmanc> is that value in the .ini?
[20:59:23] <heathmanc> there is an output scale there for 10.0v
[21:01:00] <heathmanc> or setp hm2_5i20.0.pwmgen.02.scale in the hal
[21:01:10] <heathmanc> like the threa
[21:01:11] <heathmanc> d
[21:01:23] <heathmanc> in my calse pwmgen 3 and a 4i65
[21:02:22] <PCW> the setp hm2_5i20.0.pwmgen.02.scale XXX constant can come from the ini file be a literal constant in the hal file, your choice
[21:02:33] <PCW> or be
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[21:02:49] <heathmanc> ok, that makes sense
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[21:04:29] <ssi> archivist: any idea what could have caused it to suddelny have that problem in the screw? I'm not aware of anything that happened that might have bent the screw or anything
[21:07:42] <heathmanc> appears to work, 10000rpm gets just over 4v on the aout
[21:11:18] <MarkusBec> did anybody used rs485/rs422 over an mesa card?
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[21:11:36] <MarkusBec> with a VFD or other stuff
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[21:17:30] <heathmanc_> with a vfd
[21:18:00] <MarkusBec> did it work?
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[21:33:54] <heathmanc> no, didn't work
[21:33:57] <heathmanc> this vfd realm is new to me
[21:37:39] <heathmanc> have 5v out to the CW pin to the FW pin on the vfd
[21:37:47] <heathmanc> 4v AOUT
[21:37:53] <heathmanc> got to be a vfd setting i am missing
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[21:41:14] <MrSunshine> hehe the outsdie of the spindle was not in any way concentric with the spindle shaft :P
[21:41:33] <MrSunshine> oh well, spindle - mrsun 1 - 0 ... tomorrow i will kick its butt!
[21:43:56] <Jymmm> MrSunshine: Why wait when you can just break a chair over it's head instead
[21:45:28] <MrSunshine> cause i needed a ground shaft etc so i went home to think and get stuff, back at it tomorrow =)
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[22:25:21] <Deejay> gn8
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[22:44:28] <heathmanc> I have had no luck getting this vfd to cooperate
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[22:45:19] <heathmanc> I can run it manually no problem
[22:46:25] <heathmanc> very strange thing though, I have only the analog out/gnd and a direction pin hooked up to it, but when I run a program, I immediately get a joint2 following error
[22:49:58] <JT-Shop> I just told the wife we are the proud owners of a bulldozer... she didn't even flinch
[22:50:10] <skunkworks> heh
[22:51:30] <heathmanc> lol
[22:55:33] <JT-Shop> she did ask what I was going to do with it... then offered up my services to the neighbors
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[23:02:17] <MarkusBec> heathmanc: you have galvanic isolation
[23:02:26] <MarkusBec> ?
[23:02:44] <heathmanc> should
[23:02:54] <heathmanc> I am just very unfamiliar with this vfd
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[23:04:59] <MarkusBec> ah
[23:05:13] <MarkusBec> did you use it as a servo controller
[23:05:18] <MarkusBec> the pwm out ?
[23:05:40] <heathmanc> yes, a 7i48 with a +-10 signal that has had the sign removed
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[23:06:02] <heathmanc> i can confirm i get about 5 volts analog out with a 12000 rpm spindle speed command
[23:06:07] <MarkusBec> if you had no encoder on the motor the counter of the controller will not count
[23:06:32] <heathmanc> no encoder on the spindle
[23:06:46] <MarkusBec> i think you have to set it to open loop
[23:07:04] <heathmanc> i don't get an error following error of anything with it
[23:07:11] <WalterN> anyone here use OpenPLM?
[23:07:11] <heathmanc> one of the other axis gives a following error
[23:07:13] <heathmanc> it's strange
[23:07:27] <heathmanc> if i turn off the vfd, the machine operates as normal
[23:07:51] <heathmanc> basically, i'm not sure this is wired up correct
[23:08:04] <MarkusBec> hmm
[23:08:05] <MarkusBec> ok
[23:08:07] <PCW> electrical noise maybe
[23:08:17] <Einar_> I second that!
[23:08:31] <heathmanc> that's what i figure
[23:08:33] <PCW> VFDs are notoriously noisy
[23:08:34] <MarkusBec> did you use shielded cables
[23:08:51] <heathmanc> not at the moment, but it is going to
[23:08:59] <heathmanc> i have it, but was only testing
[23:09:10] <heathmanc> i suppose I will go change it out now
[23:09:23] <PCW> make sure the VFD is grounded well
[23:09:49] <MarkusBec> hm with my vfd the Light of the tubes in the roam with the VFD was modulating with the RPM :)=
[23:09:55] <Einar_> The manual for the drive should outline grounding practice.ood g
[23:10:01] <MarkusBec> cheap china vfd
[23:10:23] <MarkusBec> after it I used shielded cables an a donfoss VFD :)
[23:11:17] <Einar_> Shielded cable may make things worse if you don't ground the shield properly!
[23:11:20] <MarkusBec> heathmanc: maybe you need an aditional Line filter
[23:11:31] <MarkusBec> Einar_: yes
[23:11:46] <MarkusBec> you have to ground it on one side
[23:12:12] <MarkusBec> and only on one side
[23:12:16] <PCW> also to keep ground bumping from VFD to PC to a minimum you might consider a common
[23:12:18] <PCW> mode choke or a couple of 100 Ohm series resistors in the analog out/analog gnd pair going to the VFD
[23:13:08] <PCW> (at the VFD end)
[23:14:31] <Einar_> Use fine stranded wire for ground. Run the grounds to one common point. Don't connect signal ground to a point further from your ground point on a ground carrying noise (in this case the VFD).
[23:15:28] <Einar_> Like my collegue says: "VFD's are our best friends and worst enemies in industry."
[23:15:36] <heathmanc> switched to shielded wire, same result
[23:16:00] <JT-Shop> did you ground the shield?
[23:16:16] <heathmanc> yes, manual says ground it to the same wire as the analog ground
[23:16:18] <heathmanc> only one end
[23:16:26] <heathmanc> on the vfd
[23:16:32] <JT-Shop> ok
[23:16:48] <heathmanc> spindle never makes an attempt to move
[23:16:56] <JT-Shop> if you ground it on both ends you create a current loop
[23:16:58] <MarkusBec> Einar_: RED glowing ground wires :)
[23:17:12] <Einar_> If your machine runs fine when the VFD is not powered up, but faults when spindle is running, you got a noise problem.
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[23:17:26] <heathmanc> ok
[23:17:40] <MarkusBec> heathmanc: can you make a picture of your installation
[23:17:48] <heathmanc> vfd runs fine with the machine in manual mode
[23:18:31] <Einar_> Nevermind how the VFD runs. Check that your machine moves as it should with the VFD passive first!
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[23:19:45] <PCW> are you saying that this (servo system) runs fine without the VFD on?
[23:19:51] <heathmanc> yes
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[23:20:03] <heathmanc> and now i just moved the vfd a little further away, and machine runs fine, but no spindle movement
[23:20:17] <heathmanc> so, that noise issue appears to be resolved
[23:20:23] <heathmanc> had it on the bench testing it out
[23:20:39] <heathmanc> but something is amiss in the config of this vfd
[23:20:58] <heathmanc> should be simple
[23:21:51] <heathmanc> 3 wires going to this thing
[23:22:01] <heathmanc> analog out/gnd and right now just a CW
[23:22:04] <Einar_> A wrong config of VFD should not cause a following error. Maybe if you have spindle feedback, but I think you do not.
[23:22:12] <heathmanc> the following error is resolved
[23:22:48] <heathmanc> it was on the z axis, just related to noise
[23:23:32] <Tom_itx> what max rpm are most of those chinese spindles?
[23:23:35] <Einar_> I usulally run the VFD with a pot and wire jumpers first to check that I got the inputs figured out correctly before I wire it up.
[23:23:38] <Tom_itx> seems most are rather high
[23:26:29] <Einar_> So your problem now is the spindle does not run?
[23:29:16] <heathmanc> right, spindle doesn't run
[23:29:24] <heathmanc> tom, i think they are 24k rpm
[23:30:24] <Tom_itx> i was thinking they were rather high
[23:30:41] <Tom_itx> wonder why they don't have lower rpm higher torque ones
[23:31:44] <heathmanc> have the vfd set for a sourcing input
[23:32:38] <heathmanc> 5vdc from the 7i37com
[23:33:01] <Einar_> What is your A002 parameter?
[23:33:36] <heathmanc> 1
[23:34:12] <Einar_> Then you should be able to run it from the operator panel.
[23:36:29] <Einar_> Sorry. I was to quick. Pg. 3-13 says it is controlled by inputs if A002=1.
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[23:37:24] <JT-Shop> PCW, when you have two 7i76 boards do you get 10 stepgens automagicly or do you need to spell it out in the config line?
[23:38:21] <PCW> of not specified at all you will get 10 (most HM2 stuff is like that, all enabled unless specified)
[23:38:28] <PCW> if not
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[23:39:04] <PCW> (assuming 7i76x2 5i25/6i25config)
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[23:39:26] <Einar_> It seems Pg.4-16 says connecting 1 to P24 should make it run FWD. I'm just skimming the manual quickly here, so may have missed something.
[23:40:47] <JT-Shop> ok thanks
[23:41:05] <Tom_itx> jt, workin on your config?
[23:41:48] <Einar_> Getting late here. I found the manual here if you don't have it:
http://www.clrwtr.com/PDF/Hitachi/Hitachi-WJ200-User-Manual.pdf
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[23:44:53] <heathmanc> I have the manual, just not having much luck
[23:45:14] <JT-Shop> helping a guy out with 2 7i76 cards
[23:45:43] * JT-Shop is looking for the minimal hal commands to get the pins for the 5i25
[23:46:06] <Einar_> Do as I said: Use jumper wires and a potmeter first to verify that you got your VFD parameters right.
[23:46:16] <heathmanc> is this an issue because it is in sensorless vector mode?
[23:46:35] <micges> JT-Shop: loadrt hostmot2
[23:46:37] <heathmanc> i imagine that isn't right
[23:47:21] <micges> JT-Shop: loadrt hm2_pci config="sserial_port_0=0000xxxx"
[23:47:33] <JT-Shop> thanks
[23:47:34] <micges> JT-Shop: show pin hm2_5i25
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[23:50:30] <Einar_> heathmanc: It should still turn if you did not choose the best control algorithm. I would start out with Free V/f first though, and see it running.
[23:51:05] <heathmanc> the autotuning and everything went great, and i have been using this from the operator panel, i will give it a shot
[23:51:27] <Einar_> Did you buy the motor and VFD as a package, these params should areary be optimized.
[23:51:57] <Einar_> OK. Then what you need to do is transfer it from OP to digital inputs.
[23:52:17] <Einar_> And analog speed control.
[23:52:28] <heathmanc> elaborate, the package didn't come together
[23:52:58] <Einar_> Do that with a pot first. The drive will not know the difference between a pot and analog from your controller.
[23:53:34] <heathmanc> right, i just don't have one on hand
[23:53:36] <Einar_> Assuming you use 0-10V speed control.
[23:53:42] <heathmanc> yes, 0-10
[23:54:22] <Einar_> If you have an adjustable bench PSU then use that.
[23:54:35] <PCW> 2 resistors will do for a pot (or tie the input to +10 for full speed)
[23:54:53] <Einar_> Yes.
[23:54:55] <heathmanc> right, just not sure where this is going.. i have verifiable voltage at the input
[23:55:19] <heathmanc> VFD show run, just a whine from the spindle with a 5v input..
[23:55:23] <heathmanc> and no movement
[23:56:24] <Einar_> Is this an async spindle or PM?
[23:56:41] <Einar_> If PM your accel param may be too agressive.
[23:58:31] <Einar_> A pot would give a smooth enough accel whatever your param setting is.
[23:59:08] <heathmanc> 9v battery did nothing
[23:59:24] <heathmanc> the spindle feels sorta stiff when i give it the run/forward input
