PWM rate on align800MX with CC Edge 120HV

[rcfreek]

I've done 5 flights on my new align E700DFC non-Hv combo. The Esc logs show 220F temps which, according to CC website are too high.

My PWM settings are 12khz and timing is medium. Is it ok? If not, can i reduce it to 8? can the motor timing be reduced to low?

Currently running headspeed 2250. Shall i lower it to 2100?

Its a 44.4 volt setup, 10 pole motor, 12 teeth pinion and 112T main gear.

I need urgent help with bringing down the temp

[-=RAGE=-]

PWM 8KHz. Motor runs fine so far. Average temps are much lower on my ESC.

Which is your average temperature?

[atkin]

PWM 8Khz here too (I realize this is a different motor)

http://www.castlecreations.com/suppo...00MX-530KV.pdf

[xokia]

See this link https://www.helifreak.com/showthread.php?t=505978

I use the above and it has worked fairly well for me.

[atkin]

Yeah, but they used PWM of 12khz for motor timing

Originally Posted by xokia

See this link https://www.helifreak.com/showthread.php?t=505978

I use the above and it has worked fairly well for me.

[xokia]

Originally Posted by atkin

Yeah, but they used PWM of 12khz for motor timing

I'm not sure what you are asking they used PWM of 12KHz and 5 degrees for timing.

If you lower the PWM you take some of the load off your ESC and it will stay slightly cooler buy your motor will get warmer. I generally don't use any timing advance at all. Timing advance on an electric motor is kinda goofy anyway IMO.

[Dino Spadaccini]

Most of the team guys use 12

[HeliTor]

800MX is a multistranded engine, and can efficient use 12kHz PWM. If you have a rewounded one with thick single strand, use 8 kHz.
120Amp ESC on this engine one is on the edge, since it has capabilities of short surges above 200 Amps. Make sure you put it in a place with adequate airflow! If you cannot get enough airflow, put on a fan or upgrade to 160HV ESC. 160HV have more than twice the weight of the 120HV... most weight added in the heat sink.

[-=RAGE=-]

My EDGE gets too hot at 12KHz.

[Dino Spadaccini]

yes they do get hot just keep an eye on the log