Graupner speed controller 30R

[Hector MackenzieParticipant @hectormackenzie31067]

I have just fitted this controller. When switched on it gives the usual audible signal and then this stops normally. However, when power from the batteries are introduced the audible signal returns continuously. I have rechecked my wiring and it seemsOK. My electrical knowledge is pretty basic so I would be delighted to hear from anyone with advice. Thank you.

Hector MacKenzie.

[Hector MackenzieParticipant @hectormackenzie31067]

[Charles OatesParticipant @charlesoates31738]

Hi Hector, can you confirm whether the motor is running correctly or not. I'm wondering if you are hearing the pulse noise common to many esc' s. Also I always connect the esc' to receiver and battery before switching on as most need a signal when powering up to work correctly.

[Malcolm FraryParticipant @malcolmfrary95515]

Switch on transmitter, switch on receiver (normally using the ESC switch). The ESC will power the receiver and stuff plugged into it from the main battery using its built in BEC. Powering up should be done in this order to ensure that both radio and speed control have a valid signal when powered up.

The advertising for the ESC (https://www.horizonhobby.co.uk/p/graupner-esc-navy-v30r.htm?SessionId=&a=article&ProdNr=0102880) says that it is "high frequency". This might, or might not, mean that the typical whine that is produced by a PWM controller being connected to what is effectively a loudspeaker is outside hearing range. This whine is a constant pitch whenever the speed setting is not zero.

If the motor works as expected, everything is OK. Probably. Not quite sure about introducing power from the battery after everything seems to have been switched on.

[Hector MackenzieParticipant @hectormackenzie31067]

..Hi Charles and Malcolm, Good of you to reply with helpful inputs, Everything OK now, Putting things on n right orders has sorted the problem. Thank you.

Hector MacKenzie

[Dave MilbournParticipant @davemilbourn48782]

Hector

Are you running the receiver on a separate battery pack from the main motor? Your OP implies that you may be, in which case you must disconnect the separate receiver pack. The Navy 30R has BEC – a topic about which I am bored of writing. This is a likely cause of the problem but must be attended to anyway.

Dave M

[Ian GardnerParticipant @iangardner62867]

Bored of? I think bored with or bored by are still the generally accepted forms. Or do we get 'fed up of' pedants?

Ian Gardner

[Dave MilbournParticipant @davemilbourn48782]

Ian

It's one of those imponderables. See example ref countryside here **LINK**

Whatever floats your boat, m'duck – and you do make some very nice boats.

Dave M

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