110v VFD's. Any issues?

[wmgeorge]

I had a Chinese built 6040 router that came supplied to run on 120 volts with a 120 volt VFD. It ran great, no issues but I was not going to cut 3/4 inch plywood with one pass ether.

[AngelArs]

On 120V supply you have to have a minimum of 20A to run a 1.5Kw Spindle 25A would be better, so your normal 120v outlet is only 15A so you are not going to successfully run even a 1.5Kw Spindle on it so a 800w is about where you are at with only a 120v 15A supply

Thanks mactec54, appreciate the help!

All things being equal, if I ran a 20 amp line would the 1.5Kw spindle run better than a 800 watt on a 15 amp line?

[wmgeorge]

Most modern homes wired to Code the outlets are wired for 20 amps, check your circuit breaker panel for more information. Frankly I do not know what a 1.5 Kw spindle on 120 volts would draw. I know my 2.2 Kw VFD calls for a 30 amp breaker on 240 volts single phase. The larger spindles are not practical on 120 vac.

[mactec54]

Thanks mactec54, appreciate the help!

All things being equal, if I ran a 20 amp line would the 1.5Kw spindle run better than a 800 watt on a 15 amp line?

Yes it would be better than 800W, if your are going to run a new line do it for 25A

[AngelArs]

if your are going to run a new line do it for 25A

Is 8 gauge wire with a 30 amp wall outlet, and a 25 Amp circuit breaker correct? It's going around 30 - 40 feet max.

[mactec54]

Is 8 gauge wire with a 30 amp wall outlet, and a 25 Amp circuit breaker correct? It's going around 30 - 40 feet max.

10 Gauge is rated 30A

[AngelArs]

10 Gauge is rated 30A

Thanks mactec54. I thought 10 gauge was good up to 25 feet, but apparently not. Thank you for the correction.

What style of 30 amp receptacle is best to use with something like this?

[mactec54]

Thanks mactec54. I thought 10 gauge was good up to 25 feet, but apparently not. Thank you for the correction.

What style of 30 amp receptacle is best to use with something like this?

You won't be using 30A on a 120v supply with a 25A Breaker you most likely won't go much of the 20A If you have changed your mind and are running a 240v circuit then I would go with the 8 Gauge 2 Hot Neutral and Ground that way you can have a 120v circuit and a 240V circuit from the same supply

These are the best type of Plugs for these type of connections, if you are going to a cabinet the you need a disconnect at the cabinet

This can be a 4 wire to your cabinet and then you can have 120v and 240v for your cabinet supply

You would need a 4 prong Plug if you use a 4 wire supply

[AngelArs]

Thanks again mactec54, appreciate all the help! Trying to do all my research before I buy anything.

I haven't changed my mind. I'll be running 10/3 Romex to the VFD, and then 16/4 double shielded from the VFD to the 1.5kw spindle.

[mactec54]

Thanks again mactec54, appreciate all the help! Trying to do all my research before I buy anything.

I haven't changed my mind. I'll be running 10/3 Romex to the VFD, and then 16/4 double shielded from the VFD to the 1.5kw spindle.

Romex is not normally used unless this is a permanent installation this is ok for in the wall to a outlet, but not for a cable from the wall outlet to cabinet

[AngelArs]

Yes this will be permanent in wall install with cable run inside conduit.

I'll then use a cable like you see used on a stove and use that to connect from the wall outlet to the VFD.

[mactec54]

The Shielded Cable from the VFD to the Spindle does not have to be 16 Gauge but that will work

CF6-15-04 is a IGUS cable which is as good as it gets this is 16 Gauge 18A Rating

CF6-10-04 is 17 Gauge with a 15A Rating

CF6-07-04 is 18 Gauge with a 12A Rating

[mactec54]

Yes this will be permanent in wall install with cable run inside conduit.

I'll then use a cable like you see used on a stove and use that to connect from the wall outlet to the VFD.

Ok one problem you can not Plug and Unplug a VFD Drive without first turning the power off with a Quality Disconnect switch you need a Switch and a EMI Power Filter between the Power supply and the VFD Drive

[AngelArs]

I was going to use a disconnect switch next to the outlet, possibly this one;

https://www.amazon.com/gp/product/B0...A3VRYS8E&psc=1


or this one;

https://www.amazon.com/Woodstock-D41...QTNWHK6GDYPMV8


I am am looking into using a UPS to filter the power, as well as building a positive pressure filtered enclosure for the VFD.

[mactec54]

I was going to use a disconnect switch next to the outlet, possibly this one;

https://www.amazon.com/gp/product/B0...A3VRYS8E&psc=1


or this one;

https://www.amazon.com/Woodstock-D41...QTNWHK6GDYPMV8


I am am looking into using a UPS to filter the power, as well as building a positive pressure filtered enclosure for the VFD.

No you would not want to use a UPS for a VFD Drive supply, the Filter I posted is what should be used , if your outlet has a box big enough you could put the Filter in that box or if you have a machine cabinet that is the best place for the Filter and closer to the VFD Drive


Yes they would work which one would depend on what you are mounting on the wall Ideal a disconnect is like the snip below and is mounted at the control cabinet, there are many types of disconnect switches that could be used

[AngelArs]

No you would not want to use a UPS for a VFD Drive supply, the Filter I posted is what should be used

According to Lincoln Electrics EMI manual a properly sized UPS is fine. I will post a link to their manual tonight when I get home from work.

Do you have a link to the EMI filter that you posted?

[mactec54]

According to Lincoln Electrics EMI manual a properly sized UPS is fine. I will post a link to their manual tonight when I get home from work.

Do you have a link to the EMI filter that you posted?

Here is one of many suppliers https://www.digikey.com/product-deta...30L-ND/2136855

Most are using this Filter or one similar

[AngelArs]

Here's the link;

Concepts of Signal Noise Reduction - Shielding and Grounding

The entire manual is a good read. See page 22;



Whether I use the UPS or not I will still use the one you posted a link to.

It installs right before the disconnect and receptacle correct?

[mactec54]

Here's the link;

Concepts of Signal Noise Reduction - Shielding and Grounding

The entire manual is a good read. See page 22;



Whether I use the UPS or not I will still use the one you posted a link to.

It installs right before the disconnect and receptacle correct?

This has nothing to do with being used inline with a VFD Drive which I would not attempt to do

[AngelArs]

This has nothing to do with being used inline with a VFD Drive which I would not attempt to do

Why? Is that because the amperage is too high for a UPS?