MMP thermal shutdown temp for motor?

At what motor temperature does the MMP cause a thermal shutdown?

Thanks,
Avner.

[DrKnow65]

MMP does not monitor the motor temp, just the ESC.
If I recall correctly the ESC thermals at around 280f.

Motors shouldn't spend time over 180f, as the magnets will fade (demagnetize).

Can someone from Castle please confirm this?

Is it possible to add a motor temp thermal shutdown feature in a firmware update, or does it require a change in the hardware?

Since the sensor in the motor is connected to the ESC anyway, it's a shame not to read it and use the info to prevent damage.

Avner.

[DrKnow65]

The "sensor" in the motor indicates the position of the rotor. So far as I am aware no brushless RC motors are built with a temp sensor.

You could use a venom temp failsafe, it monitors the motor temp (for nitro gas motors) and shuts off the throttle at a specific temp.

http://www.venom-group.com/itemdesc.asp?ic=0605

[Arct1k]

Novaks are supposedly... That said I had a Novak motor with a Novak ESC thermal itself to death on 2s in a Scale Crawler...

I know for a fact that the XERUN 150A (maybe the 80A version too) sensored ESC has a motor temp monitoring feature but according to Hobbywing only works with their new line of XERUN 1/8th sensored motors. Not sure on the temp they shut off/slow down or what ever they do when the motor temps go up. Not willing to thermal my equipment to find out. Anyway it would be cool if Castle had a feature like that but the problem I see is the temp sensors (or waht ever they are called????) might not be universal. At least not according to Hobbywing which say it only works with their motors. Not sure if it is a marketing ploy just to buy their motors or not. Hopefully Castle have thought about this. Maybe MMP has the capability and soon they will have their own line of sensored motors (at least the 1/10th motors) that could tell the ESC at what temp they are at. Would be pretty useful me thinks.

Originally Posted by DrKnow65

The "sensor" in the motor indicates the position of the rotor. So far as I am aware no brushless RC motors are built with a temp sensor.

You could use a venom temp failsafe, it monitors the motor temp (for nitro gas motors) and shuts off the throttle at a specific temp.

http://www.venom-group.com/itemdesc.asp?ic=0605

I'm sorry, but you are mistaken.

The standard sensor wire connector contains the following pinout:

Pin #1- Black wire-ground potential
Pin #2- Orange wire-phase C
Pin #3- White wire-phase B
Pin #4- Green wire-phase A
Pin #5- Blue wire-temp control, 10 k Thermistor referenced to ground potential
Pin #6- Red wire-+ 5.0 volts =/- 10%

To the best of my knowledge every sensored motor conforms to this standard (which is also the ROAR stock motor rules mandatory standard) and therefore has in it 4 separate sensors, 3 position sensors (output pins 2-4)and one temperature sensor (output pin 5).

The sensors must be standardized, or else motors from one manufacturer would not work with an ESC from another.

I have an old Novak GTB that can shut down based on the motor temperature and, until you wrote the MMP can't, I assumed that most sensored ESC monitors the motor temperature.

I'm not really worried enough about motor temps to be bothered with an external thermal failsafe, but I would have a little extra peace of mind if I knew the ESC has such a feature.

Avner.

[bruce750i]

Until then?

[bumsnogger]

Hi.I got a blower a couple of weks back.Works a treat :)

[DrKnow65]

Thanks Ferret, I learn something new every day :-)