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Which Spindle and VFD... again
Yet another question about what spindle/VFD to buy... is there a sticky thread on suggestions made by the forum users and their experiences, maybe there should be one if not?
I'm in the market for a spindle and VFD and have looked at the cheap Chinese models and wondered what the next step up was and who the players are in the market.
Are there decent models available for $500 - $1K, spindle and VFD or is that pipe dream? Does it make sense to go with a Chinese spindle and quality VFD?
My main materials are wood and aluminum but I would also like to drill and possibly cut some steel so I think I need a low RPM range for sure, this is a hobby so no business purpose here.
I've read discussions about the number of poles in the spindle and it seems that the 6 pole units somewhat would fit my purpose but I think I'm giving up a bit in the top end RPM. Maybe the 4 pole is a better option?? I'd like to understand the differences to be able to make a better purchase for overall usage.
So I'm thinking the following criteria...
Air cooled with Electric fan
3kw = 4hp
2.2kw = 3hp
4 pole (8k-12k rpm) 15K RPM MAX
6 pole ( < 8k rpm??)
- Reasonably priced for the hobbyist
- Quality electronics
Thanks for any input and suggestion.
Adam,
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Re: Which Spindle and VFD... again
99% just use the 2.2Kw 2 pole spindles.
If you are buying a $200 spindle, I don't see the point in a $300 VFD, when the $130 chinese ones work fine. Many people have run them for several years without problems. Most issues appear to be self inflicted.
Higher quality chinese spindles can be purchased from UGRA.
Another option is Hertz spindles from Turkey, which you can find on Ebay. (but I don't see any now)
Teknomotor is probably the next step up. Pricing varies depending on configuration. In the $1000 range.
You have to watch with the 4 and 6 pole motors, as they often require higher frequency VFD's (600hz-1000hz), which are not as common, and more expensive.
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Re: Which Spindle and VFD... again
Thanks Gerry, can always count on input from you.
Do the square bodies vs round bodies have any benefits or downfalls that you can see?
I'm thinking of going with an air cooled spindle and thinking an auxiliary fan on top seems to be the best choice.
ER20 collect seems to be standard, what about RPM's?
Adam,
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Re: Which Spindle and VFD... again
Square bodied air cooled probably have a lot better cooling, but I'd expect them to be louder, due to a larger fan. They may have a little more power, if they are rated more than 8 amps, like most round ones.
RPM really just depends on what you need.
If my round air cooled spindles go bad, I'll probably go with a square air cooled 2.2Kw with ER25 collet. They are more expensive, though, and usually 18,000 rpm.
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Re: Which Spindle and VFD... again
I was thinking something like this? Square bodied air cooled but an ER20 not ER25..
https://www.amazon.com/gp/product/B0...2GMNJQBY&psc=1
What's the advantage of the ER25?
https://www.amazon.com/Air-cooled-Sp...ir+cooled+er25
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
adam_m
Yet another question about what spindle/VFD to buy... is there a sticky thread on suggestions made by the forum users and their experiences, maybe there should be one if not?
I'm in the market for a spindle and VFD and have looked at the cheap Chinese models and wondered what the next step up was and who the players are in the market.
Are there decent models available for $500 - $1K, spindle and VFD or is that pipe dream? Does it make sense to go with a Chinese spindle and quality VFD?
My main materials are wood and aluminum but I would also like to drill and possibly cut some steel so I think I need a low RPM range for sure, this is a hobby so no business purpose here.
I've read discussions about the number of poles in the spindle and it seems that the 6 pole units somewhat would fit my purpose but I think I'm giving up a bit in the top end RPM. Maybe the 4 pole is a better option?? I'd like to understand the differences to be able to make a better purchase for overall usage.
So I'm thinking the following criteria...
Air cooled with Electric fan
3kw = 4hp
2.2kw = 3hp
4 pole (8k-12k rpm) 15K RPM MAX
6 pole ( < 8k rpm??)
- Reasonably priced for the hobbyist
- Quality electronics
Thanks for any input and suggestion.
Adam,
The main thing is to make sure the spindle is rated correctly most are not, the biggest give away is the Amp rating 2.2Kw with 6.4 amps is not a 2.2KW spindle, 6 Pole I don't believe to be of much use to anyone, should have lots of torque, but as with most of these spindles they are incorrectly rated
The 4 Pole gives you the best of both worlds, high speed 12,000 RPM Max and 1,500 minimum speed, they have this low amp rating though, so you end up with not 2.2Kw but something round a 1.5Kw or less rated spindle
Any good 2.2Kw will have around a 10Amp rating
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
adam_m
Just remember Air cooled spindles you can't run at low RPM
Like this 18,000RPM most likely has a minimum of around 8,000 RPM to12,000RPM
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
mactec54
The main thing is to make sure the spindle is rated correctly most are not, the biggest give away is the Amp rating 2.2Kw with 6.4 amps is not a 2.2KW spindle, 6 Pole I don't believe to be of much use to anyone, should have lots of torque, but as with most of these spindles they are incorrectly rated
The 4 Pole gives you the best of both worlds, high speed 12,000 RPM Max and 1,500 minimum speed, they have this low amp rating though, so you end up with not 2.2Kw but something round a 1.5Kw or less rated spindle
Any good 2.2Kw will have around a 10Amp rating
...
Just remember Air cooled spindles you can't run at low RPM
Like this 18,000RPM most likely has a minimum of around 8,000 RPM to12,000RPM
Isn't that why they add an electric fan for the low RPM units so they can cool, I don't think those are "shaft" cooled?
What would you recommend if you looking for a unit? I really like the idea of a 1,500 - 12,000 RPM unit...
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Re: Which Spindle and VFD... again
No, those are cooled by shaft driven fans.
Spindles with electric cooling fans will specify that, and cost much more. Not sure if I've seen any chinese spindles with electric fans, except for larger ATC spindles.
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Re: Which Spindle and VFD... again
What about something of this nature?
This looks to have a cooling fan and ER25 collet...I would assume you could just match a VFD to it and away you go.
https://www.ebay.com/p/HSD-At-mt-107....c100005.m1851
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
adam_m
Read the motor spec's understand what you need to buy, unless you have 380v you are not going anywhere with that spindle
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
adam_m
What about something of this nature?
This looks to have a cooling fan and ER25 collet..
That's a shaft driven cooling fan, not electric.
I wouldn't spend $900 on a spindle sold as "As-Is, for parts".
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Re: Which Spindle and VFD... again
Any model specific suggestions MacTech54 or Ger21?
Adam,
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Re: Which Spindle and VFD... again
I'm not going to recommend something I've never used. These look pretty good, but are pricey.
GMT Air Cooled CNC Spindle 2.2kW 220/380V 18000 RPM High Torque S | Air Cooled Spindles
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
ger21
Plus who ever brought a spindle like this would need a 600Hz VFD this is too much money for a basic spindle like this
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Re: Which Spindle and VFD... again
For that price I'd want runout of less than 0.005mm not "less than 0.02mm"
I can get less than 0.01mm on my Sieg X2!
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Re: Which Spindle and VFD... again
Gerry, what are you currently running? and what about that unit you've been eyeballing? I'm interested in your opinion since you have considerably more knowledge than I and certainly would make a better buying choice. I've looked at GMT but I thought they were just an over priced China model, maybe I misjudged.
mactec54, and yourself what would you recommend? I've read a number of threads where you've commented about the inner workings and seem to have a great understanding and knowledge as well but I didn't see many suggestions on units to buy.
I'm obviously not buying for a 20K machine and anything above the Chinese low end would be great.
I can't find price sheets on HSD models or some of the other mid-range? items so who knows how expensive they are...
Adam,
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Re: Which Spindle and VFD... again
I have a couple of cheap round air cooled spindles on a test bench, but haven't used them on a machine to cut anything. I paid $200 each for them, and am happy so far.
My take is that you are rolling the dice with any cheap chinese spindle from ebay or Amazon, but your odds are good that they'll be pretty good, and last a long time.
I don't really have any experience with any others so my opinion probably isn't worth much. :)
The spindles that CNC Router Parts sells are supposed to be pretty good. As with UGRA, you pay a premium to buy from a known, quality reseller that supports them.
A 2.2kw HSD will run between $1500-$1800.
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Re: Which Spindle and VFD... again
OK, a few words from me as well... I know not everybody agree with what I will say, but hey, that's the Internet world... so I don't care.
I agree with Gerry, would not recommend ANYTHING I never used and have no experience with, not even a coffee machine. But... chances are good that unless you mess it up, you can basically buy ANY spindle motor and you will be happy with. You must however understand what you need, how you want to use your spindle and for which purpose. Are you going to mill a lot of carbon fibre? In that case just skip any thoughts about air cooled spindle (unless you want to die young). Is it stainless steel you are going to use it on with 50mm dia mill bits? If not then why do you think you will EVER need 1.5k rpm? Are you going to use it to earn your daily bread with and will run it H24/7, or is it just for hobby and occasional weekend use? Are you going to use it as most hobby people do, on wood, PCB, plastics and occasional aluminium? In that case you will NOT need anything less than 6krpm, at least not very often and not much lower, and I dare say that it is perfectly fine to use these spindles, even air cooled, down to 6k rpm and even a bit below. I am using mine down to 4800rpm for drilling in aluminium and plastics with absolutely ZERO problems. My recommendation is that your best bet is a 400Hz 24krpm motor. It will most probably have a specified minimum rpm of 6k (even my air cooled 65mm diameter motor has that) and you'll have more benefit of the the upper rpm range than the lower, below 6000rpm, unless your aim is to work on steel and stainless all day, but in that case you need a different machine all together, not just a spindle.
So my opinion is, that there are more benefits in spending a bit extra on a good quality VFD, which really can deliver what is in the specs and is well documented and have professional support if needed, than buying a cheapo VFD and an expensive spindle. Having a good VFD means you'll KNOW you get what you want, and there is a good likelihood that you'll manage to configure it without much trouble and less risk of blowing it, or the spindle, or both up due to misconfiguration, or that you can trim the adjustments for your needs with the help of the manual. Don't worry about runout and other nerdy things, unless you really need extreme precision, in which case you should also be ready to buy very high quality collets, drill and mill bits AND trim your machine, as well as your software extremely well, take care of tool wear and so on, otherwise there is no point. Again, there is more benefit in spending time on properly aligning/squaring the machine you are using and buying reasonably good quality cutters than an expensive spindle which may promise you a runout you never can measure anyway, so you have no idea if it is true or not, and even if you know it is true, you have no use for it.
What I am using is a 1.5kW ER11, 65mm diameter air cooled spindle. I have used it for about two years now, I don't use it H24/7 but use it for milling, drilling and engraving plastics (mostly POM), aluminium and PCB. It have been working well for my needs and never failed, stalled, overheated or caused any other issues ever since I installed it. When I am drilling aluminium or using large drill bits, some times run it as slow as 4800rpm but always around 6000rpm. Most drilling works are made below 12k rpm, engraving, drilling and milling PCB between 16-24k rpm, milling aluminium around 16-18k rpm (no problems with welding), so basically I am using the whole range between min and max rpm. If this motor EVER dies on me I will most likely buy a larger one, 80mm diameter with ER16 but still only 1.5kW and DEFINITELY air cooled. Probably would buy a square one, but only because they look better and eliminate the need of a spindle bracket. I don't believe they are better cooled, except if they have active cooling with a separate fan, but I don't think I'll go for that solution because my motor have NEVER EVER overheated, not even after hours of operation. This is probably also an advantage of the use of quality VFD I mentioned above, not just the cooling efficiency. I am not 100% sure of this, but it is very much likely the case.
So, first thing first, you must decide what you want to use the spindle for, first AFTER that you can decide the power needs, type (air vs. water cooled), min max rpm and so on. There is no one-size-fits-all solution, so it is almost impossible to recommend anything other than what we have or have experience with, and even that must be taken with a grain of salt because one may be lucky, or unlucky, so just because a person have some experience it does not mean his/hers experience is valid for everyone. We have what we have because we, at one stage made our home work and came to the conclusion that what we have is what we needed.
Good luck. Conclusion: my advice is buy a quality VFD and a cheap 400Hz 24k rpm motor.
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
adam_m
Gerry, what are you currently running? and what about that unit you've been eyeballing? I'm interested in your opinion since you have considerably more knowledge than I and certainly would make a better buying choice. I've looked at GMT but I thought they were just an over priced China model, maybe I misjudged.
mactec54, and yourself what would you recommend? I've read a number of threads where you've commented about the inner workings and seem to have a great understanding and knowledge as well but I didn't see many suggestions on units to buy.
I'm obviously not buying for a 20K machine and anything above the Chinese low end would be great.
I can't find price sheets on HSD models or some of the other mid-range? items so who knows how expensive they are...
Adam,
Without knowing what you are wanting to do with the Spindle you want, or what your machine is, no body can recommend, what spindle you should have, there is no point in having a quality Spindle if your machine can't is not built to handle it
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Re: Which Spindle and VFD... again
Most of my projects will be in wood and carving but a few in aluminum.
Thanks for the insight, as always I can trust that I'll get an honest answer from the forum members.
I think I've been talked down off the ledge of investing large dollars into a spindle but maybe a few more into the VFD makes sense. I'm leaning now towards a square body 2.2KW ER25 something like this https://www.ebay.com/itm/2-2KW-Spind...wAAOSwmZFZpyV7
and maybe a Delta https://www.ebay.com/itm/DELTA-VFD-A...EAAOSw66pZi5Fy or a GE https://www.ebay.com/itm/New-GE-Fuji...gAAOSwSdZWdcw0 or Hitachi https://www.ebay.com/itm/HITACHI-NES...gAAOSwQWxbDCad I'm not sure who else makes reliable VFD's??
Do you have a VFD preference?
Adam,
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Re: Which Spindle and VFD... again
That's the spindle I'd probably buy if I were to upgrade mine.
But again, I have no experience with it at all.
For a few $$ more, you can get a more powerful version.
https://www.ebay.com/itm/3-5KW-1-92N...8AAOSwWxNYwopx
It's probably a lot heavier, though.
I'm happy with my Huanyang VFD, and would definitely buy another one.
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Re: Which Spindle and VFD... again
I think even regarding VFD, the preference is what people have and if they are happy with or not. Most people are happy with the one they have, and only a few have USER experience from more than one or two brand. Personally I use Bosch Rexroth which I am happy with, so I would not hesitate buying a new one. Otherwise I looked at Hitachi, Schneider and some more but don't remember exactly why I ended up with Bosch, except that my experience with everything with a Bosch label on it is positive plus that I liked the manual because it was well written and very promising, as always with Bosch, so I bought one. No regrets, it gave me what I wanted. I dismissed Huanyang very early because it does not provide Modbus and the manual was totally Chinglish, very unclear and poorly written and I did not trust their electrical safety or quality norms, so I have very early decided to buy ONLY real brand, which I knew I can trust. So for me, Hitachi, Shcneider, Bosch, Mitsubishi, Omron, Siemens... and similar real brands which was interesting.
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
adam_m
Looks to be a good spindle has the all the correct specs, any of the VFD Drives they are all good brand names, for a longer life get a larger Hp rated VFD than the spindle rating
Why air cooled
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
A_Camera
I think even regarding VFD, the preference is what people have and if they are happy with or not. Most people are happy with the one they have, and only a few have USER experience from more than one or two brand. Personally I use Bosch Rexroth which I am happy with, so I would not hesitate buying a new one. Otherwise I looked at Hitachi, Schneider and some more but don't remember exactly why I ended up with Bosch, except that my experience with everything with a Bosch label on it is positive plus that I liked the manual because it was well written and very promising, as always with Bosch, so I bought one. No regrets, it gave me what I wanted. I dismissed Huanyang very early because it does not provide Modbus and the manual was totally Chinglish, very unclear and poorly written and I did not trust their electrical safety or quality norms, so I have very early decided to buy ONLY real brand, which I knew I can trust. So for me, Hitachi, Shcneider, Bosch, Mitsubishi, Omron, Siemens... and similar real brands which was interesting.
Again talking a load of rubbish , Huanyang have Modbus and hundreds are using it, to control there spindle, also there manual is as good as any Bosh manual you have
Just remember your Bosch VFD was made in China also as is most other VFD Drives brands, you would be paying a whole lot more for the same product if it was not made in China
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Re: Which Spindle and VFD... again
And. From my experience with power tools Bosch products have gone downhill since moving productions out of Germany.
If I was to go branded it would be Siemens or Mitsubishi or Omron.
Haven't had any my self but my previous employers equipment used either Siemens or Omron inverters running servo motors and never failed the whole time.
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Re: Which Spindle and VFD... again
For ease of install is the main reason for going air cooled. Also since I have an MDF wasteboard and the possibility of leakage is a corncern.
So I’m a little confused on how I can go to a 3.5kw that uses the same VFD as a 2.2kw spindle 300hz. The VFD would have enough power for the spindle upgrade?
So my understanding between “Chinese” products and the manufacturing is that the Chinese may make some products but are held to higher standards when manufacturing for other companies. If they are manufacturing for themselves the standards are lower, maybe a misnomer.
I tend to avoid Chinese electronics for that reason they use inferior components in their product although they may work but longevity/safety and dependability is a question for me.
That discussion is for another thread though.
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Re: Which Spindle and VFD... again
Quote:
So I’m a little confused on how I can go to a 3.5kw that uses the same VFD as a 2.2kw spindle 300hz. The VFD would have enough power for the spindle upgrade?
No, you'd need a different VFD for a 3.5KW Spindle.
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
mactec54
Again talking a load of rubbish , Huanyang have Modbus and hundreds are using it, to control there spindle, also there manual is as good as any Bosh manual you have
Yes? Please show me...
Quote:
Originally Posted by
mactec54
Just remember your Bosch VFD was made in China also as is most other VFD Drives brands, you would be paying a whole lot more for the same product if it was not made in China
No kidding... :wave: ...remember that I was the one who introduced it on this site. As far as I know, NOBODY even heard about it before I started asking questions about it and in the end bought it... Notice that I even concluded that it was Made in China, and NEVER EVER said that Made in China = crap. I even made a short video about it before you have EVER seen one of these...
https://youtu.be/ImACFKts1wc
...but it's night and day between the Bosch and the Huanyang when it comes to documentation, quality and usability. Of course, you have some magical product nobody ever seen...
...but please continue... which I am sure you will anyway.
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
dazp1976
And. From my experience with power tools Bosch products have gone downhill since moving productions out of Germany.
If I was to go branded it would be Siemens or Mitsubishi or Omron.
Haven't had any my self but my previous employers equipment used either Siemens or Omron inverters running servo motors and never failed the whole time.
If you have problems with Bosch not having production in Germany then I think you have problems with the others as well. BTW, Bosch is pretty large, they have production on many places, both in Europe and elsewhere. I have no problems with that, as long as the products are well made, documented, providing support AND fulfil European safety regulations. I buy "Made in Europe" products if I can, but that's not always possible today. That's the reality. I am pretty sure Siemens is also made somewhere else than Germany, and probably all the others as well. How many Bosch products do you have experience with? I have a whole bunch of them, the latest (also Made in China) is actually a coffee maker, which I bought just a few days ago, replaced my Made in Europe crappy Electrolux with... :)
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
adam_m
So my understanding between “Chinese” products and the manufacturing is that the Chinese may make some products but are held to higher standards when manufacturing for other companies. If they are manufacturing for themselves the standards are lower, maybe a misnomer.
I tend to avoid Chinese electronics for that reason they use inferior components in their product although they may work but longevity/safety and dependability is a question for me.
That discussion is for another thread though.
It is a general advice (on this forum) to buy a more powerful VFD than motor. Not necessary if you have a better VFD, but may be necessary if you go for the Huanyang or similar brandless because they may not deliver as promised by the specs, they are often labelled on the optimistic side...
Made in China is not a quality indicator today, but Made for eBay definitely is. If it is made for eBay then you can count on them as lottery, but for most people it does not matter because they work. Mactec pays his bills repairing those, so of course he advocates the cheapo Huanyang. I also try to avoid Chinese products but for other reasons. In general you can NEVER say that something is good or bad just because it is made in one country or the other. Anyway, you wanted a list and I gave you one, which included what I have, because I KNOW it is VERY high quality.
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
adam_m
For ease of install is the main reason for going air cooled. Also since I have an MDF wasteboard and the possibility of leakage is a corncern.
So I’m a little confused on how I can go to a 3.5kw that uses the same VFD as a 2.2kw spindle 300hz. The VFD would have enough power for the spindle upgrade?
So my understanding between “Chinese” products and the manufacturing is that the Chinese may make some products but are held to higher standards when manufacturing for other companies. If they are manufacturing for themselves the standards are lower, maybe a misnomer.
I tend to avoid Chinese electronics for that reason they use inferior components in their product although they may work but longevity/safety and dependability is a question for me.
That discussion is for another thread though.
Confused, No you would need the right sized VFD to match the Spindle motor
No that is not correct the Chinese electronics are no more inferior than any other electronics that are made, in most cases they are using the same components for there VFD Drives, the Spindle you are looking at is made in China, as most are, the same spindle made by other manufactures in other countries would be 3 time the price and not a whole lot better
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
A_Camera
It is a general advice (on this forum) to buy a more powerful VFD than motor. Not necessary if you have a better VFD, but may be necessary
Some more quotes, that are not correct, showing your lack of knowledge on the subject, you are now saying you know more than the manufactures do, and have only used / installed ( 1 ) VFD Drive ever
All Manufactures recommend to use a larger rated VFD Drive, it does not matter what Brand name it is, if it is not Single Phase Rated, 3 Phase VFD Drives that are NOT rated for Single Phase have to be 1Hp to 2 HP Rated larger than the Spindle /Motor being driven
Quote:
Originally Posted by
A_Camera
Mactec pays his bills repairing those, so of course he advocates the cheapo Huanyang. .
I don't have bills, to pay, so not sure where you are coming from with you arrogance
Actually I have not repaired any for some time, so more of your nonsense , the only time they needed repair was form incorrect Parameter setting, by the operator, I look at just as many other brand name VFD Drives for repair, so has noting to do with the quality, the Huanyang has reached the same standards as any other VFD, even your made in China Bosch
I don't use a Huanyang VFD myself, I use Yaskawa and buy them 20 at a time
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1 Attachment(s)
Re: Which Spindle and VFD... again
Quote:
Originally Posted by
A_Camera
Yes? Please show me...
No kidding... :wave: ...remember that I was the one who introduced it on this site. As far as I know, NOBODY even heard about it before I started asking questions about it and in the end bought it... Notice that I even concluded that it was Made in China, and NEVER EVER said that Made in China = crap. I even made a short video about it before you have EVER seen one of these...
...but it's night and day between the Bosch and the Huanyang when it comes to documentation, quality and usability. Of course, you have some magical product nobody ever seen...
...but please continue... which I am sure you will anyway.
You where not the first to post on your Bosch VFD there have been others before you, I have even repaired the Bosch VFD Drives and installed them, they are nothing special just a higher price, just as many other VFD Drives have high Price for little extra return, for the basic use to run a AC 3 Ph Spindle, I use Higher price VFD Drives all the time but it is what the customer spec's so you give them what they want
The low cost Huanyang is a bare bones VFD Drive, you get what you pay for, this thread was not about a Huanyang VFD drive, but you seem to have a thing about them, and have never had your hand on one :rolleyes:
A Snip of the Modbus for Huanyang
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
A_Camera
I dismissed Huanyang very early because it does not provide Modbus and the manual was totally Chinglish, very unclear and poorly written .
I was investigating the Huanyang "Modbus" interface early on, and yes the early manualls from them describing the Modbus was total gibberish, also it did not help it is Not really compliant to standard Modbus, I think those guys were smoking something when then came up with it.
I conversed with Sebastien, the guy that came up with the 'modbus' plug-in for Mach and between him and using a RS232 program was able to decipher the commands used, or at least most of them..
The later manuals are a little better at explaining but extra work is needed.
Al.
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Re: Which Spindle and VFD... again
I realize the discussion about Chinese products could go on for a while and I really think it will be hard to verbally prove one product is better than the other so I'm going to let that go by the waist side and get back on topic.
2 questions assuming a 3.5KW spindle...
1) For reference am I meeting or exceeding the VFD rating for the spindle, I assume yes. This is for reference only https://www.ebay.com/itm/UPDATED-220...IAAOSw0LlZlUM9 I assume this would be fine and cover the spindle requirements and allow for additional "Buffer" if needed.?
2) The operating frequency of the spindle, is that directly tied to the RPM? meaning 300Hz = 18,000 RPM?
Adam,
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Re: Which Spindle and VFD... again
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Re: Which Spindle and VFD... again
If you are going to buy a chinese VFD, make sure you get a genuine Huanyang.
https://www.ebay.com/itm/TOP-QUALITY...kAAOSwyQtVvbWL
Yes, frequency is what controls the RPM.
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
mactec54
You where not the first to post on your Bosch VFD there have been others before you, I have even repaired the Bosch VFD Drives and installed them, they are nothing special just a higher price, just as many other VFD Drives have high Price for little extra return,
Those words shows how little you know about the Bosch... you make me laugh every time you talk about it.
Quote:
Originally Posted by
mactec54
The low cost Huanyang is a bare bones VFD Drive, you get what you pay for, this thread was not about a Huanyang VFD drive, but you seem to have a thing about them, and have never had your hand on one :rolleyes:
I have nothing against them. You get what you pay for. That's it. Nothing more, nothing less.
Quote:
Originally Posted by
mactec54
A Snip of the Modbus for Huanyang
Again, a proof of you knowing NOTHING about Modbus. The page you posted with the example message is NOT a valid Modbus message, it's just nonsense. If you want to proof that the specific VFD is Modbus capable please list the model name, or post the full manual. Yes, there may be Modbus capable Huanyang VFDs though they must be rare, but in that case the model number is extremely important because most have just something only THEY are calling Modbus, but no software following the REAL Modbus standard can communicate with them. That's the reason people create special plugins. Have you missed that?
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Re: Which Spindle and VFD... again
Quote:
Originally Posted by
adam_m
I realize the discussion about Chinese products could go on for a while and I really think it will be hard to verbally prove one product is better than the other so I'm going to let that go by the waist side and get back on topic.
2 questions assuming a 3.5KW spindle...
1) For reference am I meeting or exceeding the VFD rating for the spindle, I assume yes. This is for reference only
https://www.ebay.com/itm/UPDATED-220...IAAOSw0LlZlUM9 I assume this would be fine and cover the spindle requirements and allow for additional "Buffer" if needed.?
2) The operating frequency of the spindle, is that directly tied to the RPM? meaning 300Hz = 18,000 RPM?
Adam,
Beware of that seller! I would NEVER buy anything from a seller with 95% rate. Other than that, yes with that VFD you have a good margin, assuming it is REALLY 4kW, but ask the seller for the full manual BEFORE you hit the "Buy it now" button. If he is not providing the manual, or you don't understand what's written in it then don't buy it unless you know someone who can help you, or you are prepared to fry it. A seller who won't provide you with the manual, or a link to the manual in advance is not a serious seller.
If your spindle is 18,000 RPM at 300Hz it means that when the VFD outputs 300Hz then the spindle will rotate with 18k RPM, 150Hz will be 9k RPM. You must configure the VFD for the motor, so you WILL need the manual, or some help, but the link shows a nameless VFD, so it is really a hit and miss, you may not find anyone who can help you with it.