Paul & Sabrina's cheap DIY 144v motor controller

[adamj12b]

What paul means is rtd-period.

You want this set to 100 as this is what allows RTD Explorer to update 10x per second.

It should set this automatically on connection.

Disconnect the battery and check what raw throttle values you are getting at full throttle and no throttle.

-Adam

[amino]

This is what I get on the screen :

---ZERO --- THROTTLE --- FULL
-- MIN - -- MAX - - MIN -- MAX
TR- 000 - - 511 - - 509 - - 511
RT- 0718 - 0718 - 0414 - 0718
CR- 000 - - 511 - - 000 - - 511
CT- 002 -- 004 - - 002 - - 004
HS- 0270 - 0270 - 0270 - 0270
PW- 000 - - 510 - - 000 - - 510
BA- 000 - - 002 - - 000 - - 002

Paul, no FB or AH shows up on the screen
I am not proficient with the RTD program yet -- only used it a couple of times, so learning as I go. Brought the controller inside to connect to the serial port, as it's freezing in the unheated garage.

Amin

[amino]

Sorry, it should read Value where I have MIN.

Amin

[adamj12b]

Change t-max-Rc from 683 to 718.

Temp and ah is displayed In the Lowe right of the screen. Fault bits are along the bottom towards the left.

Time for bed!

-Adam

[MPaulHolmes]

Wait a second... Won't changing that just eliminate the dead zone for the throttle? As you step on the gas, it drops from around 718 in your case down to like 413 (max throttle). From 718 to 683 does nothing (so that you have a little dead zone)

[amino]

Paul, should I then leave it at 683 to keep the dead zone? Those numbers are gradually starting to make sense to me.

[MPaulHolmes]

I think it would be OK to leave it at 683. I'm very very interested to hear what the fault code is when it's really cold.

[amino]

I will try it again tomorrow and let you know. Do the fault codes only show at the bottom left of the window only when it is fully connected with the motor running? Right now with the controller on the bench the bottom of the screen is ghosted out.

Also, should I be setting values for motor overspeed, etc.?

Amin

[MPaulHolmes]

I have no idea. I've only tried RTD Explorer once a couple years ago. I bet Adam would know. I've updated the software just a tiny bit and added a new fault code, but I dont' know if that's causing problems with RTD Explorer. The new fault code is when the pwm duty is 100% and the current feedback is zero.

[MPaulHolmes]

4 hours of practicing the procedure for soldering the mosfets to the bus bar. Now I know how nasa feels. I wrote up 6 pages and 15 steps, and am getting very dexterous. If this stupid thing doesn't work I'm going to stab myself in the eyeball with a fork.