Ceiling Fan Control

[znelbok]

Originally Posted by Newman

Off - Open Circuit
Low - Weedy tiny capacitor letting through a little current
Medium - Beefy capacitor letting through more juice
High - Motor connected directly to mains.

If you connected the two capacitors in parallel with each other, to the motor, you'd get a sort of Medium+ speed, a bit faster than Medium, but not as fast as High.

A number of the manufacturers use dedicated capacitor blocks, where the weedy and the beefy capacitors are inside a common package with one terminal of each connected together.

Thanks for the clarification.

There is a capacitor block, it has two caps in it (three wires) so it is feasible to run two in parallel. As long as a failure of logic wont cause an issue (ie 2 or three channels on) then there is no need for hardware protection.

Mick

[brett_lynn]

"edited extract from training manual"

Fan control is commonly wired a programmed a number of different ways. In this exercise we will use fan
speed capacitors wires into a relay to control the fan. So consider that the fan was wired as shown in the figure
below.

Group Address " Fan "

12 Ch Relay
Ch 1 - Fan
CH 2 - Fan
Ch 3 - Fan


To program C-Bus to operate in this configuration, follow the steps below.
1) Open the 12 channel relay and click on the Turn On tab.
2) Change the Interlock Channels parameter to 3.
3) Configure the Turn On Threshold of Channel 1 to 0%.
4) Configure the Turn On Threshold of Channel 2 to 30%.
5) Configure the Turn On Threshold of Channel 3 to 70%.
6) Set Group Address to Fan on channels 1, 2 and 3
7) Click the OK
8) In the Input units set the Group Address “Fan” to be a Dimmer

Credits : CIS

Personally for me though....
I prefer to wire the fan directly from the relay ( cbus on / off )
the fan crontroller is the located in the
nearest WIR Cupboard etc... (speed control)

Have 4 Fans at my place and all have been on 2nd speed for the last 2 1/2 years.....

Cheers All

[ashleigh]

Ha ha ha everything I hear says that variable speed control gets used for the first month. After that PEOPLE figure out the speed that works best for them (comfort, noise, etc), and just use that forever after.

[fleetz]

Originally Posted by ashleigh

Ha ha ha everything I hear says that variable speed control gets used for the first month. After that PEOPLE figure out the speed that works best for them (comfort, noise, etc), and just use that forever after.

Hi Ashleigh,

In my case about 98% correct. I manually switch our lounge fan to pos 2 in the wet season here (FNQ) but all other fan are set and forget. All speed controllers are buried in WIR, robes, closets etc so they are not an eye sore. C-Bus control the on off.

I went through all the options and chose the KISS system and it works great...I get my wife to do the switch to Pos 2 and back to 1 at the end of the wet season!! Sweet.........!

Regards,

Fleetz

[nev25]

I'M curious as to why you cant simply use a dimmer channel??

[Don]

Hum

[Darren]

Originally Posted by Don

Hum

That must be the shortest complete post I have seen!

To elaborate: The problem with using dimmers for fans is that the motor windings will vibrate from the switched voltage from the dimmer. You will be able to hear a hum or buzzing noise.

[Don]

I couldn't waste such a good opportunity

Besides, most of my responses are long-winded, so this goes a little towards balancing my contribution.

[brett_lynn]

Originally Posted by Don

I couldn't waste such a good opportunity

Besides, most of my responses are long-winded, so this goes a little towards balancing my contribution.

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