[PSUBS-MAILIST] Speed controllers

[Alec Smyth via Personal_Submersibles]

No, the one I was considering was not for brushless motors. It's the
Roboteq XDC2460, rated for 80A continuous duty per channel. But now I'm
looking at Kelly I really like what I'm seeing there too, and Curtis seems
to be similar. This will probably come down to a decision between a more
advanced  dual channel from Roboteq or a super simple single-channel
controllers from the likes of Curtis/Kelly. In general if the simpler one
can do the job, it's the one I would prefer even if it cost the same.

Thanks guys for all the input!

Alec

On Tue, Apr 19, 2016 at 6:09 PM, Alan James via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Alec,
> that one says brushless?
> On the Kelly faq page for selecting controllers it suggests.....
> HOW TO CHOOSE A SUITABLE CONTROLLER FOR THE MOTOR?
> Usually the performance will be optimized if the power of the controller
> is 2.0-3.0 times of the motor's.
>    I guess that means if you have a 2000W motor you get a controller whose
> continual
> amp rating X max voltage is at least 4000W.
>    I have heard that it is better to aire on the safe side as some
> manufacturers over rate
> their controllers. Kelly have a reputation of being good & cheap, & their
> ratings accurate,
> however Hugh has had problems with them & I wired up mine yesterday & the
> ON light
> isn't working when powered up. I put power on it once without the
> pre-ignition resister
> so this may have stuffed it, but surely it wouldn't be so fickle!
> Alan
>
>
>
>
> ------------------------------
> *From:* Alec Smyth via Personal_Submersibles <
> personal_submersibles at psubs.org>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Wednesday, April 20, 2016 9:45 AM
> *Subject:* [PSUBS-MAILIST] Speed controllers
>
> Hi all,
>
> I need to finalize my selection of speed controllers for Shackleton over
> the next week or so, and at first blush am looking at this one from Roboteq:
>
>
> http://www.roboteq.com/index.php/docman/motor-controllers-documents-and-files/documentation/datasheets/hbl23xx/59-hbl23xx-datasheet/file
>
> There will be two of them, each driving a pair of MK101 thrusters. Roboteq
> offers a controller family that is a step down from this and still handles
> the required amperage, and which is tempting because it's much less
> expensive. However, the specs are too close for comfort (50A continuous
> duty rating vs. MK101 requirement of 46A).
>
> Anyone have any suggestions for other cost-effective controllers to
> consider?
>
>
> Thanks,
>
> Alec
>
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