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Parvalux motors

Pm11 240v ac to 240v dc

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not done it yet28/11/2021 13:51:43
6520 forum posts
20 photos

OP needs to contact Parvalux, methinks. They will know exactly what he has and how he can run it.

John Haine28/11/2021 14:54:07
4436 forum posts
265 photos

The OP has already tried them and they were not forthcoming - see head of thread.

SillyOldDuffer28/11/2021 15:37:54
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7923 forum posts
1725 photos

I'll stick my head over the parapet!

The motor appears to be a conventional two-wire DC Permanent Magnet type with two wires only, a red positive and a black negative wire. The motors input voltage is 0 to 220Vdc. A Brake and Tacho are optional extras, assume not fitted.

If so, many controllers available from ebay and Amazon such as this example. They all seem to be 220VAC rather than 240VAC but I'd risk it. Your responsibility, not mine!

Wiring is simple. Circuit diagram on the back. Red motor wire to + terminal, black to - terminal. Two other terminals for AC input taking Line and Neutral either way round. No earth. Two more terminals connect to a switch: I guess these are for an optional emergency off switch.

Parvalux have a Controllers section on their website but searching it doesn't identify any products. Their list of considerations suggests sophisticated control requirements well beyond what's needed on a home mill. The website comes across as an industrial supplier offering consultancy to major purchasers rather than one-off consumers. Possibly a retailer would offer more support to Joe Public.

Dave

not done it yet28/11/2021 19:05:34
6520 forum posts
20 photos
Posted by John Haine on 28/11/2021 14:54:07:

The OP has already tried them and they were not forthcoming - see head of thread.

I saw that. I still maintain they are the ones that will know what it is. Possibly the O- fidn’t ask the (salesman?) the right questions?

Michael Gilligan28/11/2021 19:44:16
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19604 forum posts
997 photos
Posted by not done it yet on 28/11/2021 13:51:43:

OP needs to contact Parvalux, methinks. They will know exactly what he has and how he can run it.

.

They do … and the driving method is summarised [perhaps too briefly] in these few words:

[I have emboldened the more relevant ones]

[quote] DC shunt wound and permanent magnet motors can be operated as variable speed using a thyristor or PWM controller.[/quote]

Ref. __ **LINK**

https://www.parvalux.com/resources/faqs/can-single-speed-motors-ever-be-operated-as-variable-speed/uu

MichaelG.

Michael Gilligan28/11/2021 19:50:52
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19604 forum posts
997 photos

See the post by Paul Smale on this previous thread : **LINK**

https://www.model-engineer.co.uk/forums/postings.asp?th=133929&p=1

MichaelG.

derek hall 128/11/2021 22:04:20
192 forum posts

I contacted Parvalux UK (Birmingham) recently and I found them very helpful regarding specifications of certain motors. They sent pdf's of drawings, dimensions etc, very useful.

A new motor was too expensive though...!

Derek

James Lake01/12/2021 00:27:20
4 forum posts

very many thanks to all for the replies and suggestions. I think I will try parvalux for a suitable AC induction motor.

Thanks again

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