VF-2 on a phase converter?

[Drew]

One reason I went with the phase perfect is my fanuc(OT, 6Mb) controls run 3 phase into the servo amps and spindle controler. Where possible run single phase loads or transformers off utility feed (like Al said) as it eases the workload of the generated leg. But I don't think it makes a difference with my fanucs (the 6Mb more thay the OT) they tend to be more sensitive to power irregulatories. Would you agree Al? I value your opinion.

[Al_The_Man]

I would be more leery of 3 phase drives etc, especially if they are SCR (across the line) with an RPC, I know Fanuc recommend no more than ±10% on the voltage supplies.
Al.

[cncatcmmg]

thanks, my electrician is coming in Thursday and i will run your ideas by him. will let you know how it worked out.

[tvwilkes]

I have used a phase conveter for 2 yrs running my SL10 and my VF2 with zero problems.

[TKBuisan]

I'm ordering a VF2-SS http://http://www.cnczone.com/forums...ad.php?t=33136
and spoke w/ the tech dept at Phase Technologies. They recommended a DPC30 for my shop. I plan on running the following:
Chicago Pneumatic
7.5HP, 230V (field changeable to 208V or 460V)

Ingersoll Rand:
115V, 15A circuit

, in addition to the Haas of course. I see some posting where people are running DPC20's w/o problems... Wondering if I am over building...
TKBuisan

[nervis1]

I've run a Fadal VMC15 (15hp rated baldor 10 real HP) and a Mazak QT-8 (10hp rated 7.5 real hp) at the same time off of a DPC-20 connected to an 80A breaker. Never had any problems.

[rickyt]

I have a Okuma Howa ACT-20 with Fanuc 18t running off a American Rotary 25HP RPC. I also have the optional buck tranformer for the machine. I wired it myself and the three legs are very close to each other on the voltages measured. It runs flawlessly, never had a problem, its on a 100amp breaker and has never tripped. Just flip the switch and then power up the machine, and wow what a sweet lathe also, I can hold tolerances +-.0002 all day long. Now just need somemore work for it.

[vpcnc]

Here is one of the reasons that Fanuc, Mitsubishi, and Other Control Manufactures do not Warranty their electronics when run on a Phase Converter.

Currently the Digital Phase Converter is the Only Phase converter that I know Fanuc will honor the warranty on.

All of these 3 Phase Drives have a 3 phase bridge that converts the AC to DC. From there it is Inverted to a PWM 3 Phase AC output.

Fanuc has a 1 percent ballance tolerance on these Drives. But they Will allow up to 2 percent as specified by the NEMA specs.

I've yet to come across any other type of Phase Converter that can hold a 1 or 2 percent Balance.

Here is A link to a FANUC document that spells out their 1 percent tolerance. And when push comes to Shove, Fanuc will not honor the Warranty if it is outside 2 percent. This I know from First Hand Experience.

ftp://216.193.130.11/fanuc/


that is a link to an FTP folder. There is a 4 page PDF document you can download.
A fax from Fanuc about the 1 percent balance requirement.
And a few pages about the NEMA 2 percent Balance Spec.

I'll only Keep the Link open for a few days.
But its infomation worth sharing.

[lovell110]

I've been reading this thread and my curiosity has me wanting more information on the digital phase converter. I am presently running a VF1
(1991) that has no ability to to vary the amount of juice comming in. My house is the first one off the transformer and my voltage is on the high side
( but within tolerance according to the power company). Right now I have no way to adjust the power. Does this digital phase converter allow me to do this? I have been looking at Buck/Boost transformers and isolation transformers. I have not been able to get two people to give me the same information. Any help would be appreciated.

John

[Al_The_Man]

All of the manuals etc are are on the Phase Perfect site, They appear to state that the output voltage is equal to the input voltage, within a min. and max. value.
They also mention that T3 is the only manufactured leg.
If you look at the Introduction Block Diagram, they show the 240v 1ph being passed through to the load, the way it is done on a RPC.
http://www.phaseperfect.com/files/al...s%20manual.pdf
They state that the Artificial phase voltage always equals the incomming 1 ph voltage.
I have never used one of these, but am just going by the company literature.
BTW a VFD will produce all 3 phases, because they need to vary the frequency which a phase convertor does not need to do.
Al.