fableman
Posts: 22
Joined: Mon Oct 22, 2012 12:27 pm

Help me controll my 230V AC motors.

Fri Sep 20, 2013 12:46 pm

Hi

I have two motors.
one fo them take air from outside and puish into my house and the other take air from bathrooms.

I want to regulate there speeds. from very slow to max.

Data of the motors Model: R4E160-AB01-12
Voltage: 1~230 VAC
50 Hz
67 W
0.4 A
1400 rpm

I want to use my raspery pi to control them, but Iam noobie with 230V stuff and motors.
Money is not a problem, I just need a good solution/wiring that will be safe.

I was thinking of using a solid state relay but not sure what model and how to make a good pulse.

Please guide me if you can

Cheers.

User avatar
piglet
Posts: 909
Joined: Sat Aug 27, 2011 1:16 pm

Re: Help me controll my 230V AC motors.

Fri Sep 20, 2013 1:45 pm

My advice is to listen to any advice you get here, but not to do anything with the advice other than to form an appropriate request to a fully qualified and insured professional to do the work for you!

What you should end up with is a fully working and optically isolated interface done by the expert which you can then plug your pi into and tell it what to do.

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Burngate
Posts: 6012
Joined: Thu Sep 29, 2011 4:34 pm
Location: Berkshire UK Tralfamadore
Contact: Website

Re: Help me controll my 230V AC motors.

Fri Sep 20, 2013 5:13 pm

I had a quick look on Google; it appears to be an induction motor, and in my experience those only go at one speed. If you reduce the voltage, they just take more current to make up for it.

You maybe able to change the speed by creating an AC sine-wave at a different frequency, but I doubt you'll be able to go very slowly.

User avatar
Tage
Posts: 287
Joined: Fri May 24, 2013 2:29 am
Location: St Thomas, Ontario Canada

Re: Help me controll my 230V AC motors.

Sat Sep 21, 2013 2:40 am

the first thing to do is to toss out your single phase motors and get 3-phase motors instead.
then you may be able to find motor drives at a reasonable cost.
http://www.automationdirect.com/adc/Ove ... Control%29
the link above is just one random example. do your own googling.

edit:
this morning I had a look at the type of motor and found that it is possible to control the speed by regulating the voltage. However, this requires a very special type of controller. There is a warning from the manufacturer of the motor (pasted below). The reason for the warning is that there is a capacitor in this type of motor and it is necessary to have a filter between the motor drive and the motor to avoid large current transients and terrible EMI noise.

"4.2.2 Voltage control
With open loop speed control using transformers or electronic
voltage regulators (e.g. phase angle control), excessive current
may occur.
In addition, noises can occur with phase angle control
depending on the mounting situation.
4.2.3 Frequency inverter
Fit sinusoidal filters that work on all poles (live-live and liveearth)
between the frequency inverter and the motor for
operation with frequency inverters.
Depending on how the device is installed, noises may occur."

So my conclusion is that yes you can regulate the motor speed by regulating the voltage, but you should use a transformer with several taps on the winding, or a variable transformer that is turned by a motor. this way you can feed a sinusoidal voltage to the motor and avoid the issues.
Last edited by Tage on Sat Sep 21, 2013 3:08 pm, edited 2 times in total.

johndough
Posts: 254
Joined: Sun Jan 13, 2013 2:00 pm

Re: Help me controll my 230V AC motors.

Sat Sep 21, 2013 9:54 am

Hi

Well it wont be easy, and anything created is likely to be bespoke.

It is how much control you want and by what method to control it.

Best left to the experts.

However you could have them running at full speed and open a flap or baffle using a solenoid to divert or decrease the effective airflow.

Element 14 or Farnell has possible products to purchase.

UNITED AUTOMATION - CSR2-15E - POWER CONTROLLER, POT, 15A, 230V
UNITED AUTOMATIONCSR2-15E
Image is for illustrative purposes only.
Please refer to product description

Manufacturer:
UNITED AUTOMATION
Order Code:
1213089
Manufacturer Part No:
CSR2-15E

Technical Data Sheet (140.08KB) EN
Technical Data Sheet (140.08KB) EN

Farnell element14 – Variable-speed single-phase full-wave motor pre-driver (LB11868V)
Feb 19 2013 - Semiconductors [More Semiconductors Articles]

The ON Semiconductor LB11868V single-phase bipolar driving motor pre-driver is now available from Farnell element14. It has a variable speed function compatible with external PWM signal. With a few external parts, a highly-efficient and highly-silent variable drive fan motor with low power consumption can be achieved. The device is best suited to applications such as driving servers requiring large air flow and large current and the fan motors of appliances such as projectors and air conditioners, says the company.
Electropages - Electronics Components News, From Leading Electronics Distributors. More news from Farnell element14

thienson30
Posts: 26
Joined: Mon Jul 08, 2013 7:53 am

Re: Help me controll my 230V AC motors.

Tue Jan 21, 2014 12:55 am

This might help you. Check out my youtube video at http://www.youtube.com/watch?v=5dmvT6vTV2w

Hardware (85volt to 260volt RF Relay Receiver) is available at http://www.ebay.com/itm/271337832780?ss ... 1555.l2649
fableman wrote:Hi

I have two motors.
one fo them take air from outside and puish into my house and the other take air from bathrooms.

I want to regulate there speeds. from very slow to max.

Data of the motors Model: R4E160-AB01-12
Voltage: 1~230 VAC
50 Hz
67 W
0.4 A
1400 rpm

I want to use my raspery pi to control them, but Iam noobie with 230V stuff and motors.
Money is not a problem, I just need a good solution/wiring that will be safe.

I was thinking of using a solid state relay but not sure what model and how to make a good pulse.

Please guide me if you can

Cheers.

fableman
Posts: 22
Joined: Mon Oct 22, 2012 12:27 pm

Re: Help me controll my 230V AC motors.

Tue Jan 21, 2014 8:30 pm

Thank for the link to ebay, his video was abit ...fuzzy :)

hampi
Posts: 223
Joined: Fri May 31, 2013 11:29 am
Contact: Website

Re: Help me controll my 230V AC motors.

Wed Jan 22, 2014 6:07 pm

I think you need a variable frequency drive

http://en.wikipedia.org/wiki/Variable-frequency_drive

Vacon is one of the manufacturers.

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