Lathe Reverse

[blackburn mark]

No joy....
Now it will run forward but not in reverse...…
This has me baffled.


It will run forward but not reverse with the Cap on pin2
It will run reverse but not forward with the Cap on pin4




This switching scheme rotates the removed bus bars through 90 degrees, is there a way I could cause damage by trying the cap on the other two pins?

[Clive S]

Have you seen this vid https://www.youtube.com/watch?time_c...ature=emb_logo

I take it, it is a single phase motor with a capacitor

When your motor runs up to speed do you here a click and another when it slows down.

[blackburn mark]

Hi Clive
Its single phase according to the plate and it has a single capacitor
I hear no click on the run-up or run-down

Its an old Clarke motor that yields very little when run through google :(

[Clive S]

Hi Clive
Its single phase according to the plate and it has a single capacitor
I hear no click on the run-up or run-down

Its an old Clarke motor that yields very little when run through google :(

Do you know how it was wired originally. Watch the vid till the end

[blackburn mark]

Do you know how it was wired originally. Watch the vid till the end

In its original wiring, it runs counter-clockwise as I face the shaft.... I can get it to run clockwise by rotating the bus bars through 90 degrees BUT I have to also move the Cap from pin2 to pin4 which seems odd and I don't have enough pins in the tumbler switch I have in order to implement that.
I was hoping an expert would reveal how dumb I was and say something like "you reverse it by moving the cap only"



I did, I don't know much about AC motor schemes but that motor looked (and sounded) like a different beast to mine.

[driftspin]

Do you know how it was wired originally. Watch the vid till the end

That is my question now too.

I would expect all motor wires on 1 side actually... may my bad.

Do we agree on the schematic?

Grtz Bert.

Verstuurd vanaf mijn SM-A320FL met Tapatalk

[blackburn mark]

Or this....?


We are seeing this from different perspectives my good man
I have a very poor grasp of the underlying/fundamental functions of the varying flavours of AC motors
If this image represents my conundrum, it does so in an abstract that I am struggling to convert into pin numbers.
I don't know how I get four pins from the three nodes

[driftspin]

Or this....?


We are seeing this from different perspectives my good man
I have a very poor grasp of the underlying/fundamental functions of the varying flavours of AC motors
If this image represents my conundrum, it does so in an abstract that I am struggling to convert into pin numbers.
I don't know how I get four pins from the three nodes

Haha yes last 2 pictures work for me.

There is no real difference.
effect is the same.


The bus bars i am not sure of until we know where u1 v1 w1 motor wire go.

What is confusing in the picture is what wires are capacitor and what is the power cord.

Normally motorwires are all below the busbar no need to mess arround with them.

looks like u2 v2 w2 starpoint is hidden in this motor.

Grtz Bert.

Verstuurd vanaf mijn SM-A320FL met Tapatalk

[driftspin]

Haha yes last 2 pictures work for me.

There is no real difference.
effect is the same.


The bus bars i am not sure of until we know where u1 v1 w1 motor wire go.

What is confusing in the picture is what wires are capacitor and what is the power cord.

Normally motorwires are all below the busbar no need to mess arround with them.

looks like u2 v2 w2 starpoint is hidden in this motor.

Grtz Bert.

Verstuurd vanaf mijn SM-A320FL met Tapatalk

Just make sure the capacitor never touches both fase and neutral directly, it will blow the fuse and capacitor too i think.

Grtz Bert

Verstuurd vanaf mijn SM-A320FL met Tapatalk

[blackburn mark]

The u1 v1 w1 (as you call them) must be the three white wires under the "X" symbols
I might be able to make sense after some drawing and thinking :)