Battlebots

A new forum for battlebots enthusiasts, competitors, and fans.
 
HomeCalendarFAQUsergroupsRegisterLog inBuilders DB

Share | 
 

 Motor timing? Soft start?

View previous topic View next topic Go down 
AuthorMessage
Josh Raichel
super contributor
super contributor
avatar

People Skills : 3348
Registration date : 2009-04-30
Age : 26
Location : Bradenville, PA

PostSubject: Re: Motor timing? Soft start?   Wed Apr 07, 2010 7:25 pm

Make sure you disable that Over volt setting. We had a similar problem. Its some useless safety thingy in the castles.

Also we did about 20 degrees for our outrunner but a inrunner should be around 10-15 like you found out.
Back to top Go down
http://www.facebook.com/josh.raichel
Frisco
super contributor
super contributor


People Skills : 3260
Registration date : 2009-11-01
Age : 45
Location : Brownsville, Pennsylvania

PostSubject: Re: Motor timing? Soft start?   Thu Apr 08, 2010 8:13 am

check out their website and those new onsite programming cards...

They are pretty self explanatory with what settings to change with soft and hard starts and all of the settings.
Back to top Go down
Dan Curhan
Admin
avatar

People Skills : 3920
Registration date : 2009-03-14
Age : 26
Location : Sarasota, FL

PostSubject: Re: Motor timing? Soft start?   Thu Apr 08, 2010 11:16 am

Have you tried the usual brushless debug techniques? (aka rotating all the wires by one position?)

_________________
If you like HEAVY METAL, check out my band.
Or my my other band.

-Captain of Copperheads 2 to pi, mastermind of the Dethinator, Creator of Conundrum, and Sultan of Shred. Heh. Sultan of Shred. It's kinda catchy... I like it!
Back to top Go down
http://666bots.blogspot.com/
rdubard
mega contributor
mega contributor


People Skills : 3490
Registration date : 2009-06-10
Age : 52
Location : Ransom Everglades, Miami, FL

PostSubject: Re: Motor timing? Soft start?   Fri Apr 09, 2010 12:53 am

Hey, what was that?
Rotate all wires by one? Never heard of that!
In your experience, what does that do?

As far as Castlelink is concerned, just click the little question-mark icons next to the settings, and you will get a pretty good idea what the different settings mean and how they work. It's worth the time to really read about each and every possible setting, and get a feel for the effect of each.

The behavior you have described sounds like the 'soft overcurrent/undervoltage' settings--if the current exceeds your settings, or the battery pack drops below a set voltage (due to internal resistance and, well, excessive current), the ESC will throttle back and 'seek' a safe setting, even if you are sending it signals for a much higher speed.

This is actually better than either alternative
a) no limiting at all, and so something (motor, ESC, or battery) blows
b) "hard" limiting, where it shuts the motor down and wont restart until it receives a zero speed signal for something like 3 seconds.

Then again, I aint no expert.
Back to top Go down
Dan Curhan
Admin
avatar

People Skills : 3920
Registration date : 2009-03-14
Age : 26
Location : Sarasota, FL

PostSubject: Re: Motor timing? Soft start?   Fri Apr 09, 2010 7:29 pm

haha dubard, let me explain...

Razz

Just passing on good advice. Very Happy

_________________
If you like HEAVY METAL, check out my band.
Or my my other band.

-Captain of Copperheads 2 to pi, mastermind of the Dethinator, Creator of Conundrum, and Sultan of Shred. Heh. Sultan of Shred. It's kinda catchy... I like it!
Back to top Go down
http://666bots.blogspot.com/
Josh Raichel
super contributor
super contributor
avatar

People Skills : 3348
Registration date : 2009-04-30
Age : 26
Location : Bradenville, PA

PostSubject: Re: Motor timing? Soft start?   Fri Apr 09, 2010 7:43 pm

rdubard wrote:
'soft overcurrent/undervoltage'

That ^^
Back to top Go down
http://www.facebook.com/josh.raichel
marsh368

avatar

People Skills : 2925
Registration date : 2009-09-09
Age : 52
Location : Bloomsburg, PA

PostSubject: Re: Motor timing? Soft start?   Sat Apr 10, 2010 6:27 pm

We have used the 80amp ESC from Castle for a number of years now. We have not had all that much luch programing from the Link, but it has been hit or miss. We usually do it manually by tone.

The settings that have worked best for use have been:

Voltage cutoff
AutoLipo

Current setting:
Disable

Break type:
Disable

Throttle Type:
Fixed Throttle

Electronic Timing Advance:
Standard... or you can save current by going with Low Advance

Low Voltage cutoff type:
Soft cut off

Soft Start:
Fast Start

PWM switching:
13khz

Thats all she wrote....My guess would be you are using a hard cutoff and soft start. Also sometihng to check would be th econdition of your Lithium cells. If they can't drop 70-100 amps for a few seconds, your going to have the ESC cut off due to the voltage drop.

We had issues with our first brushless settings and first type of lithium cells we tried to use. If you look back at the 2006 and 2007 videos, you can see we had a hard time getting our large diameter weapons started. That was all fixed 2 years ago. they spin up like champs now... 0- 15000RPM in less than 3 seconds.
Back to top Go down
http://www.mirobotics.com
Stephen
super contributor
super contributor
avatar

People Skills : 3170
Registration date : 2009-11-01
Age : 23
Location : West Mifflin

PostSubject: Re: Motor timing? Soft start?   Wed Apr 14, 2010 9:34 pm

we had the same problem with the e flight esc it would like skip and cut out we had to re program it
it was hard we just went through the manual and figured it out.
Back to top Go down
http://www.youtube.com/user/WestMifflinRobotics
Sponsored content




PostSubject: Re: Motor timing? Soft start?   

Back to top Go down
 
Motor timing? Soft start?
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» using variac, pros and cons
» 5u4gb for MKIII
» Having some fun with a baja bug engine...
» Soft start rectifier for ST70
» Cox 049 timing

Permissions in this forum:You cannot reply to topics in this forum
Battlebots :: Bots :: Debugging-
Jump to: