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noise from lathe phase conveter

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Forum topic by telrite posted 05-21-2017 03:49 PM 851 views 0 times favorited 11 replies Add to Favorites Watch
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telrite

40 posts in 2134 days


05-21-2017 03:49 PM

A high pitch whining just started on my lathe from the phase converter. The converter is a Delta VFD-M. The model number is VFD015M21A. Is there cooling fan in these units. It sounds like a fan squeal.i have taken the cover off and blown it out real well . Didn’t help Any ideas Al


11 replies so far

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telrite

40 posts in 2134 days


#1 posted 05-21-2017 06:36 PM

Just found out that this is a VFD. Does that help trouble shooting
Al

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Loren

9633 posts in 3487 days


#2 posted 05-21-2017 06:44 PM

I had a VFD for a few months and it had a fan
in it.

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Carloz

982 posts in 430 days


#3 posted 05-21-2017 07:00 PM

Could be the fan but more likely it is from a transformer. If your vfd allow changing carrier frequency you can play with it to get rid of the noise.

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MrUnix

6012 posts in 2038 days


#4 posted 05-21-2017 07:03 PM

Most, if not all of the micro-drive’s I’ve seen have a fan.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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JoeinGa

7726 posts in 1846 days


#5 posted 05-21-2017 08:50 PM

If I leave my Grizzly lathe on without it spinning, I can hear a slight “HUM” from it. Been there since new. When I turn the power switch off it takes 15 or 20 seconds for the hum to stop. I was told it was the single-phase frequency drive and it’s normal.

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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Nubsnstubs

1207 posts in 1569 days


#6 posted 05-21-2017 10:47 PM

If it’s not under warranty, remove the cover to access the fan. When found, drop a couple drops of 3 n 1 oil at each end of the fan spindle. Remember how you did it, and repeat when it does it again in a couple years or longer. Otherwise, get your self another VFD from here, https://www.nexinstrument.com/VFD015M21A, and send me the one you’re having trouble with. I’ll thank you when I receive it. ......... Jerry (in Tucson)

-- Jerry (in Tucson) www.woodturnerstools.com

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telrite

40 posts in 2134 days


#7 posted 05-22-2017 01:37 AM

thanks everyone. I have a tech stopping over tomorrow and hope to get an answer
Al

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telrite

40 posts in 2134 days


#8 posted 05-22-2017 08:37 PM

I have taken it apart as far as I am comfortable with. I found the fan and it does not spin freely by hand. I plugged it in and I would say the noise is coming from the fan.It starts as so as I turn it on and stops as soon as the fan stops spinning which is a bit after the the power is turned off. I assume it is supposed to keep running to cool things down. The connection for the fan is deeper in the box and will wait for the tech to show up
Al

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telrite

40 posts in 2134 days


#9 posted 05-24-2017 11:20 PM

So I found the problem. When I opened up the cover exposing the VFD one of the mounting holes in the plastic case was quite broken. Well i guess after 4 years a small piece must have worked its way into the fan. I had tried to take the fan out but the wires were deep into the case so I waited for the tech to show. So when he did show up he told me to start it up so he could hear what it sounded like. Well after taking the fan out the pieces must have fallen out and it purred like a kitten. I felt like a fool. I have epoxied it back together as best i could. Kinda poor quality control but I suppose if you cant see it and it works that’s good enough. I just have to put everything back together and its back to turning
Thanks to all for the suggestions
Al

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qiwating

3 posts in 194 days


#10 posted 06-16-2017 01:16 PM

the VFD fan also can set parameter as manual. only some point need simple set. Currency, Power, RPM, Motor pole etc.

-- Panasonic PLC

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qiwating

3 posts in 194 days


#11 posted 09-13-2017 02:07 PM

ABB DRIVE BOARD igbt fs450r12ke3

-- Panasonic PLC

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