Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free > Open ReVolt: open source DC motor controller
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 12-11-2011, 11:04 AM   #5271 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,362
Thanked 1,202 Times in 765 Posts
Oops, I'm sorry. It was late and I wasn't thinking straight. It would allow anything up to ... 41.455 kOhms, and then it would be a fault for anything above that. It would go to zero throttle and would force you to turn off the controller. It's to protect against the throttle getting unplugged (which would be infinity ohms).

If you type...

t-fault-rc 339
save

You would change it so anything above 7.5Kohm would result in a fault and the throttle would go to zero. t-fault-rc means throttle fault raw counts.

Man, they don't have car inspections here. It's a good thing too, since my car was a worthless pile of crap.

__________________
kits and boards
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 12-11-2011, 10:22 PM   #5272 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,362
Thanked 1,202 Times in 765 Posts
All the drilling is done!
Just a couple more practice soldering runs, and then the soldering!


Baseplate side that gets the bus bars clamped against it:

Baseplate side that's exposed to the outside world. Look at all those beautifully countersunk holes.
__________________
kits and boards
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
mpgmike (01-21-2022)
Old 12-12-2011, 06:29 PM   #5273 (permalink)
EV DIYer
 
Join Date: Jun 2009
Location: Vancouver, BC
Posts: 28
Thanks: 8
Thanked 6 Times in 5 Posts
Cold weather problem

After reading about jackbauer's experience with the controller problem at low temperature, I had been careful when switching on the last few days as it has been hovering around freezing here.

A couple of days ago when I switched the car on (in neutral) and stepped gently on the accelerator, the motor did not run. Opened the hood and checked the led's and the yellow one was flashing. After a couple of tries, the led's stayed on steady and everything was fine until this morning, with the ambient temperature at about 2 degrees C, when it did would not run until I warmed up the controller with a heat gun! However it stopped working when I applied the brakes at the end of the block! The contactor would engage after the precharge time, but the led would keep flashing.

With the hood open, it may have warmed up a little, as finally, after a few tries, the led stayed on when the contactor kicked in and it ran fine after that.

Could it be a bad solder connection that is causing this? I'll redo as many of the solder connections as I can and test it again soon.
  Reply With Quote
Old 12-12-2011, 06:45 PM   #5274 (permalink)
EcoModder
 
Join Date: Mar 2010
Location: New Zealand
Posts: 181
Thanks: 0
Thanked 33 Times in 20 Posts
A bad solder connection seems unlikely.
What is the error condition that a flashing led indicates?
__________________
Sometimes I sits and thinks and sometimes I just sits.
  Reply With Quote
Old 12-12-2011, 07:05 PM   #5275 (permalink)
Master EcoModder
 
Join Date: Apr 2009
Location: Charlton MA, USA
Posts: 463

EVVette - '71 Chevy Corvette Coupe
Thanks: 31
Thanked 183 Times in 94 Posts
Quote:
Originally Posted by harlequin2 View Post
A bad solder connection seems unlikely.
What is the error condition that a flashing led indicates?
There is only 5 error codes that will make the led flash.

Throttle fault
High pedal lockout
Vref fault
Motor overspeed
And precharge


Did you have to cycle the key to get the code to clear? If so, it makes me think Vref fault, or throttle fault.

If it just went away from heating, I would say high pedal lockout. For this you would have to check your throttle and throttle settings. Dd you ever calibrate the throttle? If not, you might be right on the edge of going into throttle fail.

If you have a laptop an can get some data from the controller it would be great to see what's going on on start up.

-Adam
__________________
www.EVVette.com - 1971 Corvette Coupe Conversion to all Electric!
www.AdamBrunette.com - Machining, CNC, Robotics and Electronics.

You can download RTD Explorer for the Cougar controllers at www.EVVette.com
  Reply With Quote
Old 12-12-2011, 07:06 PM   #5276 (permalink)
EV DIYer
 
Join Date: Jun 2009
Location: Vancouver, BC
Posts: 28
Thanks: 8
Thanked 6 Times in 5 Posts
The led was flashing as it normally does when you switch on and is supposed to stay steady after the contactor closes, if all is well.

How do you tell what condition the led is flashing? The Kelly controller has error codes, but I don't think the Open Revolt with the rev. 2C control board does.

Amin
  Reply With Quote
Old 12-12-2011, 07:18 PM   #5277 (permalink)
Master EcoModder
 
Join Date: Apr 2009
Location: Charlton MA, USA
Posts: 463

EVVette - '71 Chevy Corvette Coupe
Thanks: 31
Thanked 183 Times in 94 Posts
Quote:
Originally Posted by amino View Post
The led was flashing as it normally does when you switch on and is supposed to stay steady after the contactor closes, if all is well.

How do you tell what condition the led is flashing? The Kelly controller has error codes, but I don't think the Open Revolt with the rev. 2C control board does.

Amin
The error codes are only reported through the serial port. The led only shows that there is an error present.

-Adam
__________________
www.EVVette.com - 1971 Corvette Coupe Conversion to all Electric!
www.AdamBrunette.com - Machining, CNC, Robotics and Electronics.

You can download RTD Explorer for the Cougar controllers at www.EVVette.com
  Reply With Quote
Old 12-12-2011, 07:28 PM   #5278 (permalink)
EV DIYer
 
Join Date: Jun 2009
Location: Vancouver, BC
Posts: 28
Thanks: 8
Thanked 6 Times in 5 Posts
Thanks, Adam.
I will connect the computer and check.

Amin
  Reply With Quote
Old 12-12-2011, 08:51 PM   #5279 (permalink)
EV DIYer
 
Join Date: Jun 2009
Location: Vancouver, BC
Posts: 28
Thanks: 8
Thanked 6 Times in 5 Posts
Below is what shows on RTD Explorer. What changes would you suggest? I have only changed a few settings from the defaults.

Amin

Welcome to RTD Explorer!
aoBrtd-period 100
rtd_period=00100
config
Kp=002 Ki=020
throttle_min_raw_counts=0413 throttle_max_raw_counts=0683
throttle_fault_raw_counts=0100
throttle_pos_gain=017 throttle_pwm_gain=000
current_ramp_rate=006
rtd_period=00100
pwm_filter=0
motor_os_threshold=0000 motor_os_ftime=1000
motor_os_dtime=10 pwm_deadzone=05
motor_speed_calc_amps=000
battery_amps_limit=000
precharge_time=070
config
Kp=002 Ki=020
throttle_min_raw_counts=0413 throttle_max_raw_counts=0683
throttle_fault_raw_counts=0100
throttle_pos_gain=017 throttle_pwm_gain=000
current_ramp_rate=006
rtd_period=00100
pwm_filter=0
motor_os_threshold=0000 motor_os_ftime=1000
motor_os_dtime=10 pwm_deadzone=05
motor_speed_calc_amps=000
battery_amps_limit=000
precharge_time=070
  Reply With Quote
Old 12-12-2011, 09:16 PM   #5280 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,362
Thanked 1,202 Times in 765 Posts
Try:

rtd-period 500 (NOT IDLE! WHAT THE CRAP WAS i THINKING?! Thanks Adam!)

That will start to display things like the error code, throttle position, current, temperature, etc... at a 500ms rate. Choose whatever rate you want. Then,

TR = throttle
CR = current reference
CF = current feedback
PW = pulse width
HS = heat spreader temperature
RT = raw throttle
FB = fault bits (THIS ONE IS IMPORTANT!!!)
BA = battery amps
AH = amp hours used

__________________
kits and boards

Last edited by MPaulHolmes; 12-12-2011 at 09:52 PM..
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
amino (12-12-2011)
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control MPaulHolmes Fossil Fuel Free 3431 05-04-2022 05:43 PM
Paul & Sabrina's Cheap EV Conversion MPaulHolmes Fossil Fuel Free 542 11-12-2016 09:09 PM
Three Dirt Cheap DIY Electric Cars - Part 5 SVOboy EcoModder Blog Discussion 0 12-12-2008 04:10 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com