Morning, thank you for so many inputs to my general concern on inverters and BP 2HP.
Still following this path I have inevitably yet more questions for you all.
First let me say that Direct Phased Converters ,DPC have rocked my boat - preserving the existing controls is a big deal for me with a Dahlander type motor! Being Easter people are on holiday so I am waiting for some feedback from Direct Drives - the guy is no lover of Rotary converters that¡¯s for sure?! Interestingly in one write up he recommends for a BP 2 Hp a startup power demand of 150% (giving 3 hp
?)while in another of his write up s having said all of the above he then goes on to recommend times 3 = 6Hp! We will see if and when I get to talk to him.
My general question today is where does the Neutral come from to supply amongst other things the Fracmo table motors?
Not being an electrical engineer I looked it up. The Ai says ( if I have got it right) the supply needs Delta mode and a star topographic transformer. So, keeping it simple does that mean the chunky UK transformer serve s this function ? Thinking perhaps illogically that¡¯s where the source supply to the DRO and light come from!
If not. Is there this functionality in the Erskine black box controller? Not being able to find the Erskine circuit diagram ( only US ones - not the same). Do any of you have a copy?
Why am I asking? Well when I bought the machine ( like a plonker) I never thought to test the table motor functionality. Cleaning the machine later I found a little swarf in the ESL box and a burn on the board. A guy repaired the burn and said if I had problems ¡°not to come back¡±. I therefore don¡¯t have a high expectation of it working! Getting the mill working is the priority understanding what to do next is my current concern.
Clive
Ps anyone bought from JFK in NI DPC sellers?
