800w spindle - noise & controlling remotely

[HankMcSpank]

Re the air cooled 400w spindle ...I've presently got a 300W version & whipped the fan of it....it's stupidly quiet (but obviously I can't run it for long!)

Yeah, your new/improved spindle is way too big for my modest machine.... 'on the move' is actually London (I was about to move to Dorset but it all went pete Tong - still might), but nevertheless, thatnks for the offer but it's a little bit too far to come & have a listen.

Perhaps I'll just pony up for a VFD & just run the spindle at lowers RPMS if the noise is too prohibitive.....

[Boyan Silyavski]

I have 800w watercolled spindle and honestly its the quitest thing in my garage. The router bit itself makes 50x noise when routing. if your breakout board do not suppost output of 0-10v the next best thing to do is attach to an available output this board c41

Dont be put off the spindle, you want be disappointed. They sound like jets, due to the microphone autolevels of the cameras or phones with cameras used making the videos. In reality, you can not hear it next room.

Instead of spending money on radiators, you can follow my advice on the other thread you started and use the money for the C41 PWM control. Once you set up the frequencies you forget about this. Look at the picture of my setup on the other thread you started http://www.mycncuk.com/forums/router...s-buckets.html . See that paper just above the computer, ticked to the wall? That was from the time i was not controlling it via the C41. Every time i had to set up the frequency responding to measured RPM. Its a table of frequencies and responding RPM.
Now i have my tool database in Aspire programmed, so the CAM exports the G code and mach3 picks up the RPM from the G code and commands it directly. One less thing to worry.

Even if Dean /Jazzcnc/ pointed at one other thread that the chinese VFDs are getting better every day, if i were you i would buy this one INVERTER VETTORIALE TOSHIBA 0,75 kW 230 Volt MONOFASE USCITA MOTORE TRIFASE 1 HP | eBay

Another benefit versus 300w one is that if your machine is rigid enough or not , with very light passes you can do aluminum. At this point you will run it at 3000RPM so 800w spindle is quite more stronger than 300w at low RPM. And as they pointed to you, the run out is very small. I doubt that the 300w one comes with four bearings like the 800w.

[HankMcSpank]

Pointless seeking advice if I don't act upon it, so upon your recommendation, I've just this minute pulled the trigger on this VFD...

toshiba vfnc3s-2004pl inverter | eBay (which is what the model that you linked to)

Toshiba are normally a good make, so I'll take a leap of faith here!

I think just to get up and running, I'll go with a passive option (pump & a bucket - I'll get slick later)....has anyone a recommendation for a quiet suitable water pump

[Boyan Silyavski]

Pointless seeking advice if I don't act upon it, so upon your recommendation, I've just this minute pulled the trigger on this VFD...

toshiba vfnc3s-2004pl inverter | eBay (which is what the model that you linked to)

Toshiba are normally a good make, so I'll take a leap of faith here!

I think just to get up and running, I'll go with a passive option (pump & a bucket - I'll get slick later)....has anyone a recommendation for a quiet suitable water pump

Hey, wise choice. Hitachi also are good but in EU Toshiba is best priced.

NOTE: VFNC3S-2004PL. Toshiba Tosvert VF-nC3 Inverter for 0.37kW (0.5HP) 230V

The one i recommended you was the 2007PL for the 0.8kw

Did you make a mistake or bought this on purpose for your smaller motor?

[HankMcSpank]

Hey, wise choice. Hitachi also are good but in EU Toshiba is best priced.

NOTE: VFNC3S-2004PL. Toshiba Tosvert VF-nC3 Inverter for 0.37kW (0.5HP) 230V

The one i recommended you was the 2007PL for the 0.8kw

Did you make a mistake or bought this on purpose for your smaller motor?

oops....that what I call a F*&% up!

I searched Ebay UK for the model in the italy ebay ad you linked to ...and Ebay returned the one I've just bought...I overlooked that model number difference! (heaven knows why it was returned in my search)

I've emailed the seller, hopefully we can cancel the transaction!!

[Jonathan]

If your concerned about getting the Chinese VFD, which I wouldn't be, bear in mind if you get the 1.5kW or 2.2kW version and run a spindle rate for only 800W then it's always going to be operating at a tiny fraction of the rating. This means it's not going to get hot, and heat tends to be what wears out electrical components. Also, plenty of people here use them so it's guaranteed to be easy to set up.

[Boyan Silyavski]

If your concerned about getting the Chinese VFD, which I wouldn't be, bear in mind if you get the 1.5kW or 2.2kW version and run a spindle rate for only 800W then it's always going to be operating at a tiny fraction of the rating. This means it's not going to get hot, and heat tends to be what wears out electrical components. Also, plenty of people here use them so it's guaranteed to be easy to set up.

I agree but there are 3 main points where i am not happy with Chinese VFD:

1. The documentation

The Toshiba VFD has 300 pages manual and every detail is explained in even greater detail. Its quite exhausting to program the VFD for one that has no idea on what it does exactly. I remember spending a week programming my first VFD. Now imagine the ammount of forums that have to be read to learn the same for the Chinese VFD


2. Warranty

Warranty in EU, not China


3. Price

For a 120eur for the 800w ones for me its a no brainer. However the Chinese one could be interesting in the 2.2-3kw range

Anyways, depends from the point of view. Every machine has critical parts and for me the VFD is one of the most critical. For example i use many of the functions of the said VFD. Like detecting stall and similar and tripping above a pre programmed amperage draw. The enable on my BOB is driven by the VFD. I leave the machine sometimes do long jobs. The machine is powered by 1500w UPS power supply. So if the electricity stops, if the VFD is not connected to the BOB, the machine continues doing whatever it does for half an hour more but the spindle does not rotate, imagine the mess and damage. Sometimes a bit breaks or digs and instead of damage, the VFD trips. i dont know of the functions of the Chinese VFD which possibly are the same. Just like playing safe, at least for a 800w spindle. For my next machine i could also contemplate 3kw chinese kit due to price.

[Boyan Silyavski]

oops....that what I call a F*&% up!

I searched Ebay UK for the model in the italy ebay ad you linked to ...and Ebay returned the one I've just bought...I overlooked that model number difference! (heaven knows why it was returned in my search)

I've emailed the seller, hopefully we can cancel the transaction!!

They have best price and 3 year guarantee + technical support if you have questions.

[HankMcSpank]

Ok, the seller graciously let me off the hook :-) (lesson learnt - never buy when you're tired & don't trust the Ebay search....get into the detail!)

So ok, since I've now I've been won over into getting a VFD for me 800W water cooled spindle ....the Toshiba in Italy is 0.75KW OUTPUT ...& whilst i'll never upgrade the spindle that I have to a larger one, i do agree with jonathan that it's best to over spec (therefore buy a 1.5kw vfd) because the components will be rated higher & won't break out into a sweat. This leads me back to Chinese ....but there seems to be a huge number out there.

Is there any one particular model that I should seek out? (or avoid?!)

Some VFDs seem to be sent from Portsmouth...which appeals as I'd rather not wait 4 weeks to get up & running on my new machine purchase.