Thread: Help me Rewire A Motor From Star To Delta and To Connect the VFD in Melbourne

Hi,

Do you have a picture of the VSD nameplate or a link to the VSD you purchased?
I cant find any specs on a PI9000 that has single phase input.(though their web site says they are made, they don't list one)
I am assuming " to connect a 240 volt to 400 volt Powtran Variable Frequency Drive" is a misunderstand or typo on your part, if the VSD converted 200V to 400V you wouldn't need to convert the motor from star to delta.

Stuart

Hello Stuart the exact model is PI9130A 0R7G3.

I have attached another manual for the PI9130A 0R7G3.

PI9000????? V14.0 20140808EJ.pdf

Attached is a photo of the nameplate. It has a typo on it. It should say Input AC 1PH 230 V NOT Input AC 3PH 230 V

IMG_4721.jpg

Thanks.
Sorry to say thats not helping, that manual says the last 3 in the model number means "input voltage level 3:Three-phase 380V"
So two typos that disagree both with each other and with what you think it is
I guess it has to be one of the three

If you're correct that it's single phase 230V input and 3 phase 400V output, you wont need to rewire the motor.

Maybe I'm missing something

Not much help sorry

Stuart

Okay Stuart - I think its time to send an email to Powtran to get clarification - this is what I am thinking of asking is there anything else I should ask and am I asking the right question/details?

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I am trying to find an electrician who can connect your PI9130A 0R7G3 to my motor and to the house. However I am getting confusing advice and I was hoping you can help.

I got your PI9130A 0R7G3 VFD.

I have a 3 phase motor:

Horsepower 0.75
RPM 1440
Volts 400
Amps 15
Rating Continues
Wind Star

And I have 10amp 240 volt electric wall socket in the workshop.

Questions:

• Do I need to rewire the motor from star to delta to make it work with your VFD PI9130A 0R7G3?
• Will the 10amp 240 volt electric wall socket supply enough power to run the FVD and the motor?
• Can you confirm that the VFD PI9130A 0R7G3 is 1 phase input and 3 phase output, because the nameplate sticker on the FVD says Input AC 3PH 230 V. IS this this a typo?
  

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Amps 1.5 <you left out the .

And I have 10amp 240 volt single phase electric wall socket in the workshop.

Questions:

• Do I need to rewire the motor from star to delta to make it work with your VFD PI9130A 0R7G3?
• Will the 10amp 240 volt single phase electric wall socket supply enough power to run the VFD and the motor?
• Can you confirm that the VFD PI9130A 0R7G3 is single phase 230V input and 3 phase 400V output, because the nameplate sticker on the VFD says Input AC 3PH 230 V. IS this this a typo?
  

I'd attach a picture of the sticker to show that one of the numbers must be wrong(assuming I'm reading the manual correctly).

Good luck

Stuart

Thanks Stuart - Modified Email with photo of nameplate sent - I should hear back from them in the next few hours.

Got a responce - Less then 1 hour.
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#1:About the rewire issue ,it's depond on which connect mode is used for 400V voltage? we need the motor can work for 380±10%V AC voltage.
For example ,if your motor connect as star is used for 400V . just connect it as star . If not pls rewire it as delta connect mode .


#2: yes, 10amp 240 volt single phase electric wall socket supply enough power to run the VFD and the motor.


#3: and check with the production DEPT. the VFD is single phase 230V input and 3 phase 400V output, it is a typo, Sorry.


Anything I can help .pls tap my shoulder.


Best regards
Merlinda
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Stuart can you can sense of what she is saying and the what are the implications?

Thumbsucker,

are you sure the name plate is a typo? Even the manual stipulates input as 230V three phase.

As far as I know, and Stu, there's only one VFD that inputs 240V single phase and outputs 415V three phase.

Stu and I know well as we paid dearly for this feature.

The VFD is a brand name, Teco, modified by Drives Direct in the UK.

http://www.drivesdirect.co.uk/

I could be wrong......

Ken

According to Powtran - VFD PI9130A 0R7G3 is a single phase 230V input and 3 phase 400V output - they say the nameplate is a typo.

I have sent a follow up email -

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Hello Merlinda

Is it also a typo in the manual PI9000英文说明书 V14.0 20140808EJ.pdf page 7. Were the OR7G3 is a 3- phase 380V Input?




I assume this is my model VFD that PI9130A 0R7G3.

If it is not can you direct me to the page in the PI9000英文说明书 V14.0 20140808EJ.pdf that states the phase input for VFD PI9130A 0R7G3.?
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If this ends up that I have ended up with a useless VFD then I am going be very at some folks who who assured me that this VFD was the right choice. And I will be $200 in the hole. It would have been simpler to sell the two three phase motors I have and buy a good single phase motor as I did with my bandsaw. However I am learning, and maybe with your help we might find a way out of this confusing mess.

Thanks for link to the Drives Direct - the cost is double of Powtran. Have you found them good? Are they Chinese made or other?

Thumbsucker,

Can I be cheeky and ask approx how much your VDF cost?

Looks like you have what you want there.

Ken

I bought it direct from Powtran in China it came to $199 including postage, took 3 days to arrive. They seem very helpful and responsive to my questions even if it is clear that their English is not 100%. There was a cheaper option on eBay for $140 something but Powtran came recommended, due to build quality and direct support from the company.

Originally Posted by neksmerj

Thumbsucker,

Can I be cheeky and ask approx how much your VDF cost?

Looks like you have what you want there.

Ken

Joy!

The model you mentioned in the manual is our standard model. (3- pahse 380±10% Input.), It is not a typo.

for your requirement, We modified the software parameters and some hardwares of the power board. and make it as: 230v single pahse input and 400V three phase output.


Do you still have some problem for the connecting ?


Any further info, you can mail me or call our engineer Kevin by : 86-755-29630738


Best regards,

If this is true then they manufactured a VFD just for my specification - that would be impressive.

So what is our next move?

HI Ken,

I'm guessing about $200 lol

Hi TS,

Can't say I understand Marlinda's answers well enough to be sure of anything, but she sure seems to be saying 240V single input - 400V output.

As for the implications
As long as it is rated for 240V single phase input you'll be able to use it. Its just a question of whether the star point needs digging out or not, 400V output then No, 240V output then YES.
From the quick look at the manual it seems to be a senorless vector drive? you'd pay more for one of those than a normal drive.


Stuart

Well that would appear to be good news indeed

Originally Posted by thumbsucker

So what is our next move?

Well I guess there is only one thing left to do, get your sparky to wire it up and try it.

Will be interesting to hear the results.
If its only 230V output it will still run just at reduced power.

Stuart