Parvalux motors

[James Lake 1Participant @jameslake1]

Pm11 240v ac to 240v dc

[James Lake 1Participant @jameslake1]

Hi, please can anyone help. I have bought a parvalux motor to power my Universal Pillar Tool as described by George Thomas.I need to power this motor through a inverter or converter of some sort to allow it to run from 240v ac mains. I would also like to have control over the speed so would need a potentiometer. Also I have a no volt release switch which I would like to use.

PLEASE could someone supply me with a circuit diagram complete with all the components detailed on it, with any numbers or electrical values detailed. I have tried Parvalux but they were not forthcoming, and as I have already destroyed one of these motors I am getting desperate. Needless to say all expenses will be met. Please help

[Grindstone CowboyParticipant @grindstonecowboy]

A photo of the motor and, more importantly, any information on it (probably stamped on a plate) would be most useful.

Rob

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Grindstone Cowboy on 27/11/2021 00:53:16:

A photo of the motor and, more importantly, any information on it (probably stamped on a plate) would be most useful.

Rob

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+1 for that

Parvalux is a manufacturer, not a type of motor

Please tell us what exactly you have bought, James … and how you contrived to destroy the first one.

MichaelG.

[Gray62Participant @gray62]

Without specific details of the motor we can only make assumptions. You talk about running from an inverter so we will assume we are dealing with a 3 phase motor. There will be no need for a NVR switch as this functionality can be programmed into most decent inverters as can speed control and start/stop parameters.

A photo of the motor information plate will be a good starting point.

Gray

[Clive Brown 1Participant @clivebrown1]

Hi James,

Do you really need variable speed on this device? Mine is pretty much as specified by GHT with a 2800 rpm fixed speed motor, not Parvalux but similar. This gives speeds, from memory, of around 3000 and 2000 rpm. Since the drill capacity is 5/32" dia. max. I find this completely adequate. The machine isn't really suited to anything much larger.

[BaldricParticipant @baldric]

The title says "Pm11 240v ac to 240v dc" on their website I can't see a 240v dc motor, is that the correct voltage?

Baldric.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Baldric on 27/11/2021 09:22:44:

The title says "Pm11 240v ac to 240v dc" on their website I can't see a 240v dc motor, is that the correct voltage?

Baldric.

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Oops … I missed the subtitle

At a guess, it would be the 220v one then : **LINK**

https://www.parvalux.com/search/pm11/

MichaelG.

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Edit: __ https://568506-1834645-raikfcquaxqncofqfm.stackpathdns.com/app/uploads/2021/11/parvalux_datasheet_PM11-5.pdf

 

Edited By Michael Gilligan on 27/11/2021 09:41:56

[Michael GilliganParticipant @michaelgilligan61133]

[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/

MichaelG.

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Edit: __ Plenty of commercial products, and schematics available

This is a good place to start : https://www.electroschematics.com/motor-speed-regulator-with-triac/

Edited By Michael Gilligan on 27/11/2021 10:01:08

[John HaineParticipant @johnhaine32865]

I would recommend a KBE controller such as this one. I use one on my Novamill and it has performed well. Look at the manual for the wiring diagram.

[JourneymanParticipant @journeyman]

A suitable power supply with 220V DC output seems to be required have a look *** HERE ***

It may be easier to get an AC motor of similar size which Parvalux also make!   *** HERE *** for example.

John

Edit: link

Edited By Journeyman on 27/11/2021 10:20:36

[John HaineParticipant @johnhaine32865]

The supplies that Journeyman links to look highly overspecified for the task and aren't really designed for motor control. The KBE ones have "armature resistance" compensation to keep the speed constant under load and can control the speed smoothly over a wide range with its integral potentiometer. Output is fuse protected and I can vouch for the fact that you can stall the motor at high speed by running the cutter into the material, blowing the fuse, but the controller is undamaged (just need to replace fuse). The only downside is that the whole internal chassis is floating with mains – the outer casing is earthed so the unit is fully safe (and the speed control pot has a nylon shaft for safety), but this does mean that controlling the speed from an external voltage needs an isolation circuit. But for James' application that isn't needed and the integral pot will be just fine. Based on my experience over several years I can recommend KB.

You can also get much lower cost speed controllers from eBay but I have no experience of these.

[An OtherParticipant @another21905]

RE JH's comment about 'eBay' and similar suppliers. I have a 220V DC controller bought from BangGood, and it seems fine. control is by a potentiometer (supplied with the controller), and is from 0 up to full voltage (in my case, about 1300 rpm) – I use it on a spindle motor in a CNC system I built. My only 'criticism' is that the casing is drilled for ventilation, so it needs to be mounted where swarf can't get in.

I've had it for some time, and can't remember exactly what I paid for it, but I think it was only around 30 Euros – there are many different controllers on their website – delivery from China was 10 days (no connection with BangGood)

Edited By An Other on 27/11/2021 11:23:09

[Jon LawesParticipant @jonlawes51698]

Second question in almost a decade, no replies to the answer given last time….

[derek hall 1Participant @derekhall1]

Hi recently contacted Parvalux for a price for a 2800rpm, 3 ph SD28……..Glad I was sat down when I looked at the quote….over £500

Regards

Derek

[John HaineParticipant @johnhaine32865]

Derek, worth haunting eBay – I got one, brand new, for well under £100.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Journeyman on 27/11/2021 10:06:51:

A suitable power supply with 220V DC output seems to be required […]

.

[blushing again] Ah, yes … if the motor is DC only, then it will need a DC supply

… and if speed-control is required, it would then be by PWM

MichaelG.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Michael Gilligan on 27/11/2021 09:53:40:

[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/

MichaelG.

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Edit: __ Plenty of commercial products, and schematics available

This is a good place to start : **LINK**

Edited By Michael Gilligan on 27/11/2021 10:01:08

.

Just striking-out the erroneous edit in my earlier post ^^^

… the main text remains valid.

MichaelG.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by John Haine on 27/11/2021 09:58:52:

I would recommend a KBE controller such as this one. I use one on my Novamill and it has performed well. Look at the manual for the wiring diagram.

.

That does look near-ideal, John … ‘though I note that its maximum DC output is only 180v

MichaelG.

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Edit: __ Looks nicely built too : https://youtu.be/SWlFJpRLtiI

 

Edited By Michael Gilligan on 27/11/2021 15:09:30

[James Lake 1Participant @jameslake1]

So sorry, I seem to have left out the important bits. The motor plate is very faint and does not lend itself to photography. But here are details ; PARVALUX MPM11-0034/cont. W-2950707-11181

MOTOR TYPE: PM11 voltage supply 220/240 dc power 110watts current 0.64 speed 5000rpm

RATING CONTINUOUS insulation F thermal [TP] capacitor enclosures TENC type GB speed GB torque GB ratio

Part 1 BGM 1

this is all copied verbatum . Hz and Phase are mentioned on the plate but no values given. I purchased this motor direct from Parvalux as it appears to be the same motor that came ready fitted to my QUICK-STEP MILL, anyone familiar with these? I would realy like a much quieter motor perhaps along the lines of the one that is fitted to my Cowells 90ME lathe. Can anyone recommend a motor perhapsmwith simpler wiring!!!

[John HaineParticipant @johnhaine32865]

Thanks for the additional details James. That is clearly a DC commutator motor which it is why it's noisy (brush whine). If you just want fixed speed then an equivalent Parvalux induction motor would be fine – suggest that you contact them for suggestion. If you want variable speed and silence then a 3-phase motor with VFD is one approach, though probably quite expensive.

Alternatively a few people posting here have fitted brushless industrial sewing machine motors which can be had from well-known auction sites for reasonable prices complete with controller – some searching the forum should turn up a recent thread. I think recently someone fitted one to a Unimat which is the kind of power you want,

This is an ideal opportunity to broaden your engineering knowledge to embrace electrical engineering.

[not done it yetParticipant @notdoneityet]

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

[John HaineParticipant @johnhaine32865]

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

[SillyOldDufferModerator @sillyoldduffer]

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 yetParticipant @notdoneityet]

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?

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