BLINKING RED LIGHT!

[JohnFogarty]

I had this same issue, it's the voltage. Mine stalled and after a few seconds then reset. But i replaced the problem Jags with Victors and bingo off to work we go.

[BHOP]

just wondering...

do victors "reset" or go into an "error state" when their voltage dips too low?

The gearing in our drivetrain is high, which draws a lot of power from our battery. It seems that when our wheels stall from say running into the wall we run into the problem mentioned above with blinking red lights and the robot pauses for about 3 secs(about the time to reset a jag)...

we are hoping that switching to victors will get rid of this problem, does this sound like it will work?

thanks

[Tom Line]

Originally Posted by BHOP

just wondering...

do victors "reset" or go into an "error state" when their voltage dips too low?

The gearing in our drivetrain is high, which draws a lot of power from our battery. It seems that when our wheels stall from say running into the wall we run into the problem mentioned above with blinking red lights and the robot pauses for about 3 secs(about the time to reset a jag)...

we are hoping that switching to victors will get rid of this problem, does this sound like it will work?

thanks

It's not likely. More likely, you are tripping the 3 second snap action breakers by drawing too much current. That is not a Jag or Victor issue - you are simply drawing more than 40 amps.

[Vikesrock]

Originally Posted by Tom Line

It's not likely. More likely, you are tripping the 3 second snap action breakers by drawing too much current. That is not a Jag or Victor issue - you are simply drawing more than 40 amps.

I disagree. We have managed to trip the Jaguar current protection many times this year (we had an issue with our kicker leadscrew getting stuck) and I don't think we tripped the snap action breakers a single one of those times.

Brian,
The Victors do not have the same current protection the Jaguars do, they will keep running during the conditions described. It is very possible that you would just move the fault upstream to the breakers by switching the speed controllers however.

[BHOP]

From what little electronic knowledge I have... the 40A breakers can actually handle larger currents for small amounts of time(less than one second). For that little bit of time we should be ok.

You will see us on weds litterally taking our robot and driving it straight into the cement wall or side of the practice field and seeing if it does the delay(this is the easiest way to replicate). We have to fix this problem. I hope the victors fix it, if not there will some cool coding taking place.

here is video http://www.youtube.com/user/bhop2323#p/u/0/jxDuGIMYkJY, some people say they don't notice it, but you can see when we score, run into a wall, etc. the robot sometimes stops for a brief period, but we are still enabled.

Thanks for the advice, see you all at championship

[Vikesrock]

Originally Posted by BHOP

From what little electronic knowledge I have... the 40A breakers can actually handle larger currents for small amounts of time(less than one second). For that little bit of time we should be ok.

That is correct. I believe 971 also has issues with the Jaguars faulting due to fast gearing on their drivetrain which was remedied by replacing them with Victors.

[BHOP]

excellant to hear that. we basically have the exact drivetrain as 971. thanks for the help kevin. going back to roboacad or are you graduating?