Someone please explain this - ESC Motor wiring matters?

[FighterCat57]

Id hazard a guess these unprogrammed ESC have a LVC too close to the connect voltage of your batteries.
On inital spool up the lvc activates, rests, clips again.. stttttttutter .
The SF series have "limp home mode' which ignores lvc(V>90% of set lvc) if Th <10%... else dead.

That's possible. IIRC the battery used in all cases has been an off the shelf battery at storage voltage or in one case towards the middle of a run that may thwart the auto lipo's efforts to adjust to the correct setting as 2s.

I'll Configure the HeiFei 120 and see if it stops this behavior.

[drwayne]

Good catch, actually powered it off and then back on and it failed right after the vid.

I ended up using this combination.

blue - yellow
red - black
black - red

It's interesting that it worked, then failed.

BTW- The reason I finally caught this is because this is the first motor that I've had with multi-color lead wires. Typically they are all same color and the pattern is no so well pronounced.

I know the SF240 intimately ( ) but the 120 is a mimic.
Ive seen single line timing controls on several Cn esc.. perhaps the units you use have single phase drivers, with next phase monitored for returns ?
This explains the one way works situation. must be ABC else it fails..( A fire, B listen) ditto CAB should work
Never ( multiplied by squillions) use an unprogrammed esc..they can ship without cognitive code embedded..
W

[FighterCat57]

I know the SF240 intimately ( ) but the 120 is a mimic.
Ive seen single line timing controls on several Cn esc.. perhaps the units you use have single phase drivers, with next phase monitored for returns ?
This explains the one way works situation. must be ABC else it fails..( A fire, B listen) ditto CAB should work
Never ( multiplied by squillions) use an unprogrammed esc..they can ship without cognitive code embedded..
W

This is news. I've always assumed they were shipped with auto defaults that were relatively safe.

The only problem is the el-cheapos that just beep program and are sometimes impossible to decipher.

I'll update with what the SF120 has as settings.

[FighterCat57]

Default:
SF-120 Default.jpg


Configured: (just set)
SF-120 Configuration.jpg

[drwayne]

This is news. I've always assumed they were shipped with auto defaults that were relatively safe.

The only problem is the el-cheapos that just beep program and are sometimes impossible to decipher.

I'll update with what the SF120 has as settings.

On first connect cheap esc expect to learn throttle bandwidth ( 0-100%) .. during program mode some will assess voltage and use that reading as cell count .. be scared.. many cheap Cn esc consider <3.0V as LVC.
Once set most all remember those settings.. If you change cell count you MUSt reprogram the esc.

cheers
W

ps.. WTH is IIRC ?

[drwayne]

Default:
[ATTACH]34347[/ATTACH]


Configured: (just set)
[ATTACH]34346[/ATTACH]

edited


is this 120LV or 120HV ?
use the swordfish program for swordfish HV esc.. diff controller script.
I believe Steven has it on OSE in downloads.

as addendum.. startup type sets initial 0-10%throttle timing from 5-30deg
Std = 10'

[FighterCat57]

On first connect cheap esc expect to learn throttle bandwidth ( 0-100%) .. during program mode some will assess voltage and use that reading as cell count .. be scared.. many cheap Cn esc consider <3.0V as LVC.
Once set most all remember those settings.. If you change cell count you MUSt reprogram the esc.

cheers
W

ps.. WTH is IIRC ?

If I recall correctly.

The SW120 considers 3v/cell as LVC- I was hoping to change this to 3.4v/cell, but didn't see the option. It was only whole volts every 3v. EDIT: just found the other software; downloading and trying now...

[drwayne]

If I recall correctly.

The SW120 considers 3v/cell as LVC- I was hoping to change this to 3.4v/cell, but didn't see the option. It was only whole volts every 3v. EDIT: just found the other software; downloading and trying now...

cripes matey.. it's lunchtime here in Oz.. your locale must be witching hr !..
chuckle, dont you have a life outside the build room ?



I browsed4 again some of your replies...
in the default image it states 5V as lvc.
next programmed says 4S..
If the lvc is wayyy below the connect voltage, the sf series (should) disallow usage due either A. wrong program setting... or B... overcharged cells.
Idiot proofing.

[FighterCat57]

Same thing with the HeiFei software; 3.0v/cell for cutoff, options were the same, just different fonts.
SF-120 Configured- SF.jpg

Now I just know not to run these to the LVC.

It's 9pm here... My wife works 12's at the local hospital. When she's doing back to backs, I just stay out of the way and let her rest. Basically tinkering to pass the time.

I've been a software engineer for years, so am most comfortable sitting at the computer designing things...

[drwayne]

Same thing with the HeiFei software; 3.0v/cell for cutoff, options were the same, just different fonts.
[ATTACH]34348[/ATTACH]

Now I just know not to run these to the LVC.

It's 9pm here... My wife works 12's at the local hospital. When she's doing back to backs, I just stay out of the way and let her rest. Basically tinkering to pass the time.

I've been a software engineer for years, so am most comfortable sitting at the computer designing things...

I nocturnally coach remote servers back to life after daily abuse from incompetent users... mostly government morons...
Daytime I R&D electronics.
here's my desk/workstation/design lab/build room.

[drwayne]

If I recall correctly.

The SW120 considers 3v/cell as LVC- I was hoping to change this to 3.4v/cell, but didn't see the option. It was only whole volts every 3v. EDIT: just found the other software; downloading and trying now...

Can send update script that offers 0.1V variance in lvc.. but will make esc dedicate to that cell count.
eg 4S = 14.8 nominal .. down to 13.6 in 0.1
Has a 16 point variant to scale within.
but no longer able to cope 2S,3S,5S,6S, ........
limits of prog chip they've used.

[tharmer]

Creative minds are rarely tidy.
-anon

[FighterCat57]

I nocturnally coach remote servers back to life after daily abuse from incompetent users... mostly government morons...
Daytime I R&D electronics.
here's my desk/workstation/design lab/build room.

Spent the better part of a decade in a cornfield helping Lockheed, Boeing, Sikorsky and Nasa use Collins radios... better known now as Rockwell Collins. Wasn't unusual to see live feed spacewalk video in the NOC...

Now, I walk my dog to the beach on a peninsula about 7 miles from mainland.

Can send update script that offers 0.1V variance in lvc.. but will make esc dedicate to that cell count.
eg 4S = 14.8 nominal .. down to 13.6 in 0.1
Has a 16 point variant to scale within.
but no longer able to cope 2S,3S,5S,6S,7S,8S,9S ........
limits of prog chip they've used.

So an option for 6s would be 22.2, LVC @ 19.98?

[drwayne]

Creative minds are rarely tidy.
-anon

Busy desk, busy mind.
Empty desk ........

[drwayne]

Spent the better part of a decade in a cornfield helping Lockheed, Boeing, Sikorsky and Nasa use Collins radios... better known now as Rockwell Collins. Wasn't unusual to see live feed spacewalk video in the NOC...

Now, I walk my dog to the beach on a peninsula about 7 miles from mainland.

I remember walking for leisure.. now its not easy.

So an option for 6s would be 22.2, LVC @ 19.98?

basics.
SF chipset does not allow >2Vcell between LVC and connect voltage . ( will not boot )
Can break division into 16 staged 0.1V . for specific cell count.
6S if you connect at 22.2V
22.2 22.1 22.0 21.9 21.8 .......20.6 lowest lvc
4S if connect at 14.8V
14.8 14.7........13.2 lowest lvc ( checked script, endpoints include start/final V )

thoughts ?