Wiring terminals inside motor cover plate are as. T, A2, A, Z, E, Info inside plate states "to reverse rotation interchange Black and Blue Motor Leads at terminal A & AZ".
At present the 240 is wired as, Blue to A2.
Brown to A.
Gr/Ye to Earth !!
Terminals are wired as, A2 to Black going to motor windings
A to Black going to motor windings but also connected with fixed wire to Z
T to nothing at present.
E to Earth
Question is...I want to use a "Dewhurst and Partner" Reversing drum Switch...any thoughts on how to connect it up ??, I have read that four leads are needed to exit the Motor ? can you get 4 core ?..then what ??.
If anyone can help it will be much appreciated indeed, small byte-size diagrams are (hopefully) below of the Motor terminals, and a pic of the interior of the Dewhurst if that helps.
Please can you help me..again, really pathetic Lathe man need Help please.
Happy New Year to you all, cheers..Maximat (Ian)
The unused T term is prob. a thermal cut out in the winding core so can be ignored, it's only any use if using a full blown starter.
Without getting too involved in the type of motor it sounds like a 'capacitor start & run' type.
If this is so then as well as two wires going to external capacitor from A & Z there will be 4 wires going in to motors winding a 'run' winding and a
'start' winding. You need to be able to reverse the connections to the 'start' pair, ie remove them from the terms. they are on, extend them out as a pair, then add a pair of wires to their original terms so you then have 4 wires in 2 pairs which can be reversed. I would use a domestic 'Intermediate' light sw, off load in workshop to prove system then try to get drawing of proposed reversing sw. and compare operation of contacts with int.sw ops.
The' Start' winding should be the ones the manufacturers drawing (in lid?)show,
Hi all good ? rocky, yes if switched over at speed would probably blow fuse, I assumed it is a wood lathe, & as with mine does not use a chuck as such just 'dogs' to drive spindles etc & my 'face plate locks on so rotation not a prob.
My metal turning lathe has inbuilt reversing by gears &/or it's variable speed & reverse motor Very old AC 'repulsion' motor Circa 1940's.
chuck never undone yet ....ummm wonder why.....must check!
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