Thread: Need help finding part number For spindle amplifier on Yang SMV-1000

Hi Folks,

had a Fanuc tech in yesterday to work on our Yang SMV-1000 getting a #27 alarm on the spindle amp. tech says its ether the amp or the encoder he checked the cable and its good.

anyway seems my spindle amp is mismarked as it has the same part number as the servo amp next to it. (Maybe the bus bar covers were swaped at some point??)

anyway the fanuc tech could not determine what the correct part # was

I've been calling YANG to find out what it is and they are "Working on it"

Just wanted to see if anyone has the same machine and could give me a part #

its a 1998 YANG SMV-1000 with Fanuc OM-D 40 taper.


Also this is the first time weve had a Fanuc tech here (most of our stuff is HAAS) he was here 7 hours and wasn't able to pinpoint the bad part also now we have a second alarm now a 319 alarm (X AXIS communication error)

were our HAAS tech useuly has the problem figured out and fixed with machine making chips in less the 4 hours.

thanks,Chris

I have a hardinge VMC-1000, which I believe is the same machine, I may be wrong, but I know my machine is a re-badged Yang. Anyway I recently had similar problems. My turned out to be the spindle encoder, there is a parameter that you can change in the control to ignore the spindle encoder. If you set that parameter and the spindle runs, it's the encoder. If it doesn't run it's likely the amp.

I will dig around my bookmarks and see if I can find some more info for you.

Here we go.

to turn off spindle encoder
Parameter 6505 bit 0 = 0
6501 bit 2 = 0

If it turns out to be the encoder let me know, I have have records of where I got mine and the pinouts.

Hope this helps! Good Luck

Originally Posted by XD341

I have a hardinge VMC-1000, which I believe is the same machine, I may be wrong, but I know my machine is a re-badged Yang. Anyway I recently had similar problems. My turned out to be the spindle encoder, there is a parameter that you can change in the control to ignore the spindle encoder. If you set that parameter and the spindle runs, it's the encoder. If it doesn't run it's likely the amp.

I will dig around my bookmarks and see if I can find some more info for you.

Here we go.

to turn off spindle encoder
Parameter 6505 bit 0 = 0
6501 bit 2 = 0

If it turns out to be the encoder let me know, I have have records of where I got mine and the pinouts.

Hope this helps! Good Luck

thanks I will check it out and get back to you

Can't try it this 319 alarm won't let me try anything Also my electrical cabinet is a mess the fanuc tech pulled all the wires out of there conduits and left them that way!!

any info on how to fix the 319 alarm

it's a serial pulse coder alarm but if it popped up since the tech was there he might have something disconnected. I find it hard to believe that multiple major components have died simultaneously unless your shop took a lightning strike or something. I think you're kinda stuck because you don't know what has been done by the tech. Once there is more than one variable in the equation troubleshooting gets much more difficult. Is he coming back? I would be pissed if a tech left my machine like that. Do you have the control maint. manual? There is a trouble shooting guide in there. Fanuc B-62545EN/02 is my book. You might find it online.

As far as the whole Fanuc vs Haas thing. Fanuc is probably tougher and slower to fix simply because the techs don't work on them much. Fanuc sucks for memory and advanced features but I'll be damned if they don't run forever. Slow to modernize but reliable. At least that has been my experience.

Originally Posted by XD341

it's a serial pulse coder alarm but if it popped up since the tech was there he might have something disconnected. I find it hard to believe that multiple major components have died simultaneously unless your shop took a lightning strike or something. I think you're kinda stuck because you don't know what has been done by the tech. Once there is more than one variable in the equation troubleshooting gets much more difficult. Is he coming back? I would be pissed if a tech left my machine like that. Do you have the control maint. manual? There is a trouble shooting guide in there. Fanuc B-62545EN/02 is my book. You might find it online.

As far as the whole Fanuc vs Haas thing. Fanuc is probably tougher and slower to fix simply because the techs don't work on them much. Fanuc sucks for memory and advanced features but I'll be damned if they don't run forever. Slow to modernize but reliable. At least that has been my experience.

No lightning strike. tech seemed inexperienced using words like my supervisor thinks its this or my supervisor this ect..

tech is supposed to be back as soon as i get a part number for the spindle amp I talked to a frank out of California who is supposed to contact the factory in Taiwan for me and get me the info. i was given his number from derrick at yang.


and we are pissed at fanuc we need this running

I might be pissed at Yang, they are the MTB.

Originally Posted by XD341

I might be pissed at Yang, they are the MTB.

I stand corrected i'm more pissed at yang but still they claim they didn't cause the second alarm and the plant owner wont be happpy when he sees a bill for 7 hours of service and nothing was acomplished

I feel your pain there. I just got a service quote back today on a machine that is down. Just to get the tech to show up in my shop is $2200.00! That doesn't include any actual work, or parts, just to have him arrive in the bldg. I wouldn't care but he is only coming from Jersey!

Originally Posted by XD341

I feel your pain there. I just got a service quote back today on a machine that is down. Just to get the tech to show up in my shop is $2200.00! That doesn't include any actual work, or parts, just to have him arrive in the bldg. I wouldn't care but he is only coming from Jersey!

Well got all the part numbers and the Fanuc tech came back now i have 910 alarm (the tech changed the battery's before he left last time) he said that didn't cause the alarm. he said it just popped up now and we need a memory board and an axis card and the ladder may be lost. and he wants $3300.00 before he leaves and nothings fixed and we are in way worse shape.

we talked to one of his supervisors at Fanuc in new jersey and were told the tech did his job correctly then we got estemits on all the parts that just failed out of the blue plus labor and were are looking at $10,000.00 + so after consulting with the plant owner we are not fixing it. we payed the tech but plan to dispute it. and the machine is for sale for parts


anyone need any parts from a yang SMV-1000 1998??

The ladder should be in eprom so that's not lost.
IF the tech changed batteries with power off, that will get you that alarm as your memory is gone.
You could power up with Cancel + Delete (I believe) to clear that alarm then attempt to load your params.
I am guessing 0M control? load 900's first. recycle power, load the rest, you need to load PMC params which are in diag. hopefully you have a list. You may have had an ATC macro which is also gone you will need a copy of that.
I wasn't there so I don't know what happened but, from your side of the story it appears service call did not go well.

Originally Posted by PMT

The ladder should be in eprom so that's not lost.
IF the tech changed batteries with power off, that will get you that alarm as your memory is gone.
You could power up with Cancel + Delete (I believe) to clear that alarm then attempt to load your params.
I am guessing 0M control? load 900's first. recycle power, load the rest, you need to load PMC params which are in diag. hopefully you have a list. You may have had an ATC macro which is also gone you will need a copy of that.
I wasn't there so I don't know what happened but, from your side of the story it appears service call did not go well.

2 service calls started out as a 27 alarm on the spindle amp tech came firt time and he got a 319 alarm (just poped up he siad) then he wanted to change the batterys they were 8 months old. I went and got him new batterys he put them in then he left telling us he needs to return with more parts.

comes next time turns on machine gets 910 alarm. then tells us we need a memory board maybe a main board 2 days labour to put parameters in and the ladder may be lost and they cant get it. nor do they have a main board if we need it. wacked us for 22 hours without providing a true dignosis and we still dont know what the original problem is they already got $3300 from us and its looking to total $10,000 or more. the machine has tons of miles on it so we are gunna cut our losses and rid ourselves of it

power was on wen he changes batterys. this is my first dealing with a fanuc tech They dont trouble shoot anything there only method seems to be bring losts of parts and swap them into it works. I know alot of folks don't like Haas machines but after this I'm thankful all our other VMC's and one of the lathes is HAAS. there techs show up around 10am and by 2:30 at the latest i'm making chips. and if there not sure whats wrong they trouble shoot they check voltages at different places on the boards and identify the bad part.

fanuc just tells me it could be this or this or this or this. we won't know unless we install a new one. don't they have a way to test the boards to see if they are faulty

Hi.
We have a svm1000 yang, if I can help in something, I will do it gladly.