[PSUBS-MAILIST] Speed controllers

Thu May 5 17:16:48 EDT 2016

I have never as any problem.  BTW, the 1/4" spade connectors are also used inside the motor to connect the 10 AWG cables with the brushes.  Make sure you get good quality spade connectors designed for 10 AWG wire.  Don't use cheap spade connectors you would find at Harbor freight or one of the big box stores.  Digikey has good spade connectors.  

Btw, I have been driving these MK boards pretty hard with my new variable pitch prop pushing 60 amps at times.  No issue with the controllers.  

I found a nice undocumented feature of the MK controllers.  If at low rpm the motor torque spikes like what happen if the prop fouls, the controller goes into a protection mode.  On one of my dives I had a root lodge in my thruster between the ducted nozzle and prop.  The MK controller protected the electronics.  After pulling the root, the system returned to working fine.  I found out about this when I tried to measure the 0 rpm max torque of the motor.  

Cliff

Cliff Redus

> On May 5, 2016, at 2:33 PM, Alec Smyth via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hi Cliff,
> 
> It appears the MK controller will do just what I need it to, but there is one detail that has be a bit concerned. From what I see it appears the main motor current is all going through a single spade connector. Close to 50 amps through one of those little guys is a lot, and the connectors themselves don't take very fat cables. Have you had any issues with that? 
> 
> 
> Thanks,
> 
> Alec
> 
>> On Tue, Apr 19, 2016 at 10:38 PM, via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> http://m.ebay.com/itm/MINN-KOTA-TRAXXIS-TROLLING-MOTOR-MAIN-CONTROL-BOARD-PN-2184017-OR-2184027-/371336409933
>> 
>> Standard part that can be ordered just about everywhere.  Shows up on eBay quite often.  MK part no.  is 2184017.
>> 
>> 
>> Cliff Redus
>> 
>>> On Apr 19, 2016, at 9:24 PM, Alec Smyth via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>> 
>>> Thanks Cliff. Is the controller a component you pulled from inside the MK trolling motor or is it a standalone product? I did a few searches and have not turned up anything standalone. I do have such a unit (really old) but it's for a way lower-powered motor than the 101s.
>>> 
>>> Best,
>>> 
>>> Alec 
>>> 
>>>> On Tue, Apr 19, 2016 at 9:58 PM, via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>>> Alan/Alec, I use Minn Kota 36v controllers for each of my 4 thrusters.  They have worked great.  They are potted and rugged.  They have an internal relay with a dead band around 2.5v signal voltage.  This means that absolutely no current flows even if you left the motor controller powered up while in the garage.
>>>> 
>>>> My previous motor controller for my big traction motor was from Curtis.  This worked great but generated a high pitch noise that was irritating.
>>>> 
>>>> 
>>>> Cliff Redus
>>>> 
>>>>> On Apr 19, 2016, at 6:35 PM, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>>>> 
>>>>> What did Cliff use?
>>>>> He has been through this process recently with a 101.
>>>>> 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 11:12 AM
>>>>> Subject: Re: [PSUBS-MAILIST] Speed controllers
>>>>> 
>>>>> 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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>>>>> 
>>>>> 
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