[PIVOTALCUSTOMS]

He would need a Neutral wire to get 120v supply from the 240v source

Depending on what size his spindle Hp is he may not need a RPC for his machine at all, so he needs posts what his spindle requirement's are and does it have a VFD Drive

The spindle motor is a 5.5 kw 3phase servo spindle motor running a 3 phase pulse/direction drive.


The servo for my z is also a dedicated 3phase drive.
So as far as I can tell 3 phase is required.

So after chatting with Phase Technologies the output is closed Delta 3 wire phase to phase 1% voltage with on leg being high phase to ground...

The 220v servo drives are currently running 2 hot legs of 220v service no neutral in my test setup( the inputs are designed for oversees power 1 hot 220v leg 1 neutral)

So could I in theory just run those from 2 low legs to ground with 220v between phase?

That just leaves me with the 110v issue

[mactec54]

The spindle motor is a 5.5 kw 3phase servo spindle motor running a 3 phase pulse/direction drive.


The servo for my z is also a dedicated 3phase drive.
So as far as I can tell 3 phase is required.

So after chatting with Phase Technologies the output is closed Delta 3 wire phase to phase 1% voltage with on leg being high phase to ground...

The 220v servo drives are currently running 2 hot legs of 220v service no neutral in my test setup( the inputs are designed for oversees power 1 hot 220v leg 1 neutral)

So could I in theory just run those from 2 low legs to ground with 220v between phase?

That just leaves me with the 110v issue

You need a neutral for 120v single phase which you can split from any of you main 240v supply if you live in NA then you have120 / 240v single phase supply not 220v


Don't believe what they are telling you about the RPC, there is not an RPC made, does not matter what brand or manufacture they will not be even close to 1% even the CNC grade RPC


No you can not run the low legs to Ground lots of smoke and Brakers would trip if you short a live wires of anything


Now if you where talking Phase Perfect then there digital phase converter can easy give you clean 3Ph power @ 98% efficiency


Who is the manufacture of the servo drive most 3Ph servo drives will run on single yours would be at the top of the range for single phase though but worth a try

[Jim Dawson]

Don't believe what they are telling you about the RPC, there is not an RPC made, does not matter what brand or manufacture they will not be even close to 1% even the CNC grade RPC

You are correct in that you can't buy one off the shelf. But it's possible to build one Here is a picture of the panel meters on mine 1.01% or better under most operating conditions. T1-T3 is about 255 unloaded, but settles right down under any load. But a Phase Perfect would probably be better.

239, 237, 239, 236 if you can't read the meters.

[mactec54]

You are correct in that you can't buy one off the shelf. But it's possible to build one Here is a picture of the panel meters on mine 1.01% or better under most operating conditions. T1-T3 is about 255 unloaded, but settles right down under any load. But a Phase Perfect would probably be better.

239, 237, 239, 236 if you can't read the meters.

Looks good but still not the at 1% if your wild leg is 255 then you are around 6.7% no point in showing something that others can't have or likely to achieve, but still in reality is no better than a CNC rated RPC

[PIVOTALCUSTOMS]

You need a neutral for 120v single phase which you can split from any of you main 240v supply if you live in NA then you have120 / 240v single phase supply not 220v


Don't believe what they are telling you about the RPC, there is not an RPC made, does not matter what brand or manufacture they will not be even close to 1% even the CNC grade RPC


No you can not run the low legs to Ground lots of smoke and Brakers would trip if you short a live wires of anything


Now if you where talking Phase Perfect then there digital phase converter can easy give you clean 3Ph power @ 98% efficiency


Who is the manufacture of the servo drive most 3Ph servo drives will run on single yours would be at the top of the range for single phase though but worth a try

Mactec54 Yes I have single phase 240v. I'm not running the low legs to ground, as I value my life lol. What I am doing is running the 2 hot legs of my 240v single phase to the L and N terminals on my drive.

Also I was not talking about RPC at 1% I was referring to the phase technologies phase perfect converter.

Also what you said in regards to passing the neutral through is what I was trying to find out. That's something they offer? If I did that and brought the neutral in then I should be able to run the 110v single between the neutral and one of the non manufactured legs correct?

There isn't an issue with bringing along the neutral in a Delta configuration?

[mactec54]

Mactec54 Yes I have single phase 240v. I'm not running the low legs to ground, as I value my life lol. What I am doing is running the 2 hot legs of my 240v single phase to the L and N terminals on my drive.

Also I was not talking about RPC at 1% I was referring to the phase technologies phase perfect converter.

Also what you said in regards to passing the neutral through is what I was trying to find out. That's something they offer? If I did that and brought the neutral in then I should be able to run the 110v single between the neutral and one of the non manufactured legs correct?

There isn't an issue with bringing along the neutral in a Delta configuration?

Correct


I don't know if they offer that but if you tell them what you want to do I'm sure they could add an isolated lug or terminal block for the Neutral wire, or you could do it yourself as well

No it's not a problem as long as you take your ( 1 ) 120v hot leg from the input Power side of the Phase Perfect and not from the output

You also could run separate 120v circuit from the power supply panel that is feeding the Phase Perfect, as long as you use the same Ground connection as the Phase Perfect you would be fine also

[mactec54]

The spindle motor is a 5.5 kw 3phase servo spindle motor running a 3 phase pulse/direction drive.


The servo for my z is also a dedicated 3phase drive.
So as far as I can tell 3 phase is required.

So after chatting with Phase Technologies the output is closed Delta 3 wire phase to phase 1% voltage with on leg being high phase to ground...

The 220v servo drives are currently running 2 hot legs of 220v service no neutral in my test setup( the inputs are designed for oversees power 1 hot 220v leg 1 neutral)

So could I in theory just run those from 2 low legs to ground with 220v between phase?

That just leaves me with the 110v issue

Are that makes a big difference Phase Perfect is the way to go if you need 3ph power I have a PT380 you could get them to add a Neutral terminal block so you could run a Neutral for a 120v supply as well I did not but did not have a need for 120v

You would take the 120v from one Hot leg that feeds the Phase Perfect and the Neutral and Ground would give you a normal 120v supply