RC India

hi to members

plz help me yaar, i have moss with A 2212 / 1000 kv, battery is 1000 mAH/11.1V, 20 amp ESC, futaba 6EXAP with R146iP receiver

when the battery is connected to ESC the Beep sound comes from motor  :banghead:

i m not gatting the point that why the beep sound comes from motor?

i have changed all the setup even the motor was canged but the same result

guys i have gone mad  :headscratch:

can any help me plz  :help:

nehu

 

Hey can you post some pics of the motor and the ESC.
And make sure what's beeping, motor/ESC?  :)

Hi Nebutech

You have to set your throttle to idle when you connect your battery to your esc. Even if you have a little throttle up, the esc will just enter into programming mode. If you have a throttle trim, trim it all the way down. Did my suggestion work?

Since you mentioned that you are using a Futaba 6EXAP, the first thing you want to verify is that you have set channel 3 (throttle) to "reverse" in the "REVR" menu.

Otherwise, the ESC would detect it as full throttle (even though the throttle stick is at the lowest position), and the ESC would either refuse to arm or go into programming mode (depending on the ESC brand/model).

hi

jerryazhakathu:-    as u said yes the throtter is at idle speed

me-my-parts :- as i said the MOTOR is Beeping in a code style like some type of signal .  sorry for the pic dude my cam is not working.

anwarbhai :- yes i have set the channel 3 (throtter) at reverse

but as i said same result the MOTOR beeps

setup is
motor is RCFORALL A2212/12 1000kv
ESC is dys 20 amp

thanks to all for ur reply

 

Never heard of "beeps" coming from the motor. 

Do you mean some kind of "whirring sound" from the motor, or actual "beeps" that are possibly coming from the ESC ?  You have to confirm the source of the sound before any resolution can be arrived at.

the beep sound is coming the motor because the ESC is sending programming signals to the motor(I havent seen any airplane ESC's making any kinda beeps or sounds by it self)... I have had the same issue with a 50A HK ESC because there was no BEC. It stopped beeping once I added a BEC.

I don't understand how  a motor can make beeps :headscratch: But an ESC could make beeps because it could have a micro speaker in its circuitry to assist the user when programming the ESC by giving audible confirmation.

Hello Mr. Rao

Try feeling the motor while beeping or hold the motor close to you. Motor works as a buzzer. I am surprised many of the people didnt know about this. If you look at the below manual and many of the manuals, you can see it says, "hear a beep from the motor".

Look at " How to use your new ESC" section in the below manual
"

www.fmadirect.com/support_docs/item_1268.pdf (http://www.fmadirect.com/support_docs/item_1268.pdf)

 The throttle channel on the Tx  could be  in reverse .
ESC's  will not allow a motor to start when the  throttle channel is on reverse.
So this is warning that the throttle is on reverse.

Be careful  to ensure min throttle when you reverse the  the channel on the Tx  otherwise you would have the motor on full throttle when you reverse the channel.

and please follow this  RESET/ START UP procedure  to ensure right minimum and maximum  settings.
http://www.rcindia.org/electric-planes/normal-start-up-procedure-for-electrics/

Sai

You are right, I stand corrected.  I am also surprised that I never looked at it from this angle so far, even though I have held the motor sometimes when it being armed, but did not feel it as the buzzer. Since I have heard even elaborate "tunes" (like old songs) while using some brands of ESCs, I was under the impression that the tones are made by a small buzzer on the ESC itself.

BTW, there is no reference like "hear a beep FROM THE MOTOR" in the manual you posted, or the various ones I have come across so far.  That easily added to the misunderstanding.

Nehu -

As I suggested earlier, and as Sai is suggesting now, it sounds like a case of the ESC detecting high throttle when it is powered up.  Although you said you have reversed channel "3", there seems to be something simple that you are missing. So confirm the following also.

1.  Make sure there is no "trim" and "digital trim" on the throttle channel.  To be sure, try clearing the model in the transmitter, or try doing the setup on another "clean" model selection.

2.  Make sure your connections are correct. The throttle should be on channel 3 (it is easy to notice on the R146ip where the channels are numbered), and make sure the connector is not reversed (the signal wire, which is the "lightest colored wire, usually white", should be towards the middle of the receiver, ie, towards the printed number "3")

3.  Make sure your throttle is at idle speed / lowest position.

Have you tried whether the motor works after the beeps??

The motor gives a confirmation tone stating that everything is connected properly and that it is armed and ready to go!! You are probably referring to those beeps..

- Chan

Sorry, Jerry. But the motor CANNOT "beep". It is from the ESC, for certain. If you have read the above in a manual, it is very likely an error due to  poor translation.

OK... that makes me feel not alone, yet confused  :D

See the "crude speaker" reference in this thread : http://www.wattflyer.com/forums/showthread.php?t=22370

There are many such references elsewhere, like :

http://www.rcuniverse.com/forum/m_7712843/anchors_7712843/mpage_1/key_/anchor/tm.htm#7712843

http://www.rcgroups.com/forums/showthread.php?t=637117

I am trying to rack my brain as to how it could be physically possible for a motor to generate "beeps". A buzz maybe.

Beeps are single tones. To generate such sound you need some sort of diaphragm to move "air". The only "movable" part in a motor is the rotor. Beats me how that could do this.

I guess "a beep is just a well behaved buzz"  ;D  Sorry, I couldn't help make that comment  :giggle:

Follow the link for the clincher.

http://www.castlecreations.com/products/phoenix-35.html

Very clearly states that all Castle Creations Speed controllers feature: "AUDIBLE ARMING SIGNAL" (amongst others).

Still inconclusive as to what really generates the tone/beep/buzz  :headscratch:

This *could* also mean that the ESC generates the signal that causes the motor to "emit" the sound !

May be this is the clincher ;D

http://helifreak.com/showthread.php?p=1730322

"It is in fact the motor coil oscillating that you can hear."

Yep, I am a total convert !

http://www2.wattflyer.com/forums/showthread.php?t=11584  (the whole thread is about this)

Anyways, yet another thing learnt on the forum :thumbsup:

And for Nehu, it looks like he mistook the initial beeps of the ESC/motor as a "problem", while it is normal and to be ignored.  There is no mention by him that the beeps are continuous, and we all ignored the "elementary, Watson" part ;)

In an outer runner motor the coils cannot and do not move. Wonder how they "oscillate"?

I would like to clarify that I admit that I could be wrong, but there seems no logical explanation yet offered for it.

Maybe I will try and obtain a dud ESC and dissect it for research !

Judging by the last link from wattflyer.com (and the links from there), I think there is a lot more to how sound can be generated than the diaphragm method we are all familiar with.

And I felt the same initially, total disbelief and surprise at how something so close to home was totally missed ! :)

thanks to all

anwarbhai as jerryazhakathu  provided the .pdf file for the beep sound generated by motor is of programming the ESC {:)}

i got the point that the beep is of ESC for programming it.

thanks to all

i m happy that my Tx and Rx is ok thanks to u all and god :salute: :salute: :salute:

and special thanks to jerryazhakathu {:)} :salute: :thumbsup:

now i m trying to program the ESC :thumbsup:

Sushil bhai - Looks like me, you and a whole bunch of other people are surprised with this.

Here is Castle Creations themselves being more specific about who makes the beep. On the second page of the document below, they say "The Phoenix will beep the motor to indicate that it is armed".  There is a similar reference in page 3 also.

http://www.castlecreations.com/support/documents/Phoenix_User_Guide.pdf

I am glad some of you already found about this. :thumbsup:

for unbelievers  ;D the ESC creates high frequency linear waves to the motor which in turn produces an audible confirmation tones and beeps. Wonder how a motor makes a sounds? :headscratch: The motor acts as an electromagnetic field and the high frequency waves are what we hear..crazy huh?

And those who said sound cant be made without a diaphragm

There is an amazing invention called plasma speaker.. Google it or look this video :)
http://www.youtube.com/watch?v=rasp88nbsRw&feature=related (http://www.youtube.com/watch?v=rasp88nbsRw&feature=related)

Schematic for plasma speaker - http://www.instructables.com/files/deriv/FAT/15CV/FTY4CMXZ/FAT15CVFTY4CMXZ.MEDIUM.jpg (http://www.instructables.com/files/deriv/FAT/15CV/FTY4CMXZ/FAT15CVFTY4CMXZ.MEDIUM.jpg)

In fact, even I am under the strong impression that the motor makes the beeps.  If not, then try programming an ESC without connecting the motor.. There would be no beeps.. Logically, the ESC should beep whether the motor is connected or not.. Never seen an ESC beeping without a motor being connected..

 ;) ;)

This also reminds me of a comedy scene from a Tamil movie.. Do you snore thru your mouth or thru your nose??

- Chan

It is 100 Percent that the motor makes the beeps. It fact the turnigy ESC plays the whole start up/arming music(16 melody selectable) using the motor. I have 4 different kind/makes of ESCs and none have speaker. I was surprised the first time when I heard the sounds coming from the motor 2 months ago(when I first got hands on my first HC parcel.) A speaker is nothing but magnet, coil and diapharm. The motor is nothing but coil, magnet and a rotating body. Since the outrunners are AC motors and the signals can be sent over 3 wires in such a pattern so as to make the motor body vibrate in such a pattern that it creates that music. No big engineering here, but its pretty surprising :D.

What I have noted is that since there is no diapharm, a motor cannot sound as beautiful as a speaker and cannot make all frequency sounds. For example the same esc connected to a TP bell motor sounds loud and when connected to the turnigy non-bell motor sounds weak.

If you are still not satisfied that the motor makes the beeps, disconnect the motor and then try programming now(at your own risk, make sure that the ESC output wires are NOT touching each other.). You wont here any beeps. ;D

Its fair that people not notice this because the ESC and motors are always near. 3 to 4 inch apart max and they think its ESC making sound. ;D

EDIT:

Chan,

Its good that motor should make the beep and not ESC, because its the motor thats armed and rotates not the ESC. So more meaning full for motor beeping and reducing price of ESC by not putting a buzzer there.

Actually we see this all the time, but that alone does not indicate that it is the motor that makes the sound. It could just as easily be thought of as the ESC's way of indicating that a "motor is not connected". 

Agreed, but companies can always make a different tone/ tone pattern to say that a motor is not connected, rather than not making beeps at all in this case. You cannot program w/o beeps unless you have a programming card. And why do you think that ESCs company would if at all expect everyone connect ESC to motor and then program? One would always allow programming w/o connecting to motor, being more sensible here. So Personally I dont think its a way for ESC to tell that a motor is not connected. I rather consider it that motor make sound because its motor that gets armed and sound should come out of motor, also reducing cost of putting buzzer on ESCs

BTW are there ESCs that has a buzzer on it? I havent come across any. :headscratch:

I have seen ESCs with indicator lights, that can be used for programming.  That would have been a clue about the sound coming from motor, had one thought it through ;)

hi to all members

thanks for u r valuable replys

i have understod that Motor Sound (Beeps) in Signal tone like beep--beep-----beep . It has some kind of pattern to beep, each beep indicates the meaning like set the throtter control, etc . After many trys i got the prop spin in full speed. thanks to all

but i m Sure that motor acts like speaker when it is connected to ESC, while the ESC is in Programmable mode

yes u can Programm u r ESC. U can configure the Throtter point from min to max. i have set the throtter in full range means, the stick of ur TX should be at the top point for maximum throtter and push the throtter at bottom for the minimum speed.

so it is right that ESC can be programmed by TX and the beep says that ur in programming mode.