Troubleshooting help

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willfcc   10 mW

10 mW
Posts: 20
Joined: Apr 19 2010 9:42am
Location: Gresham, Oregon

Troubleshooting help

Post by willfcc » Mar 26 2011 8:28pm

I have an ebikes.ca 2805 front hub motor that won't go.

It worked fine in the fall, when I was using SLA. I hooked up lipo for the first time, and the motor doesn't work.

The cycle analyst says I have 41.4 volts.
I opened the controller, and measured the hall signals and throttle signal. They appear fine.

Any suggestions?

Thanks.
RANS Rocket Recumbent
Sidewalker Willy
ebikes.ca / Grin Technology 9C 2805 12x5 Infineon 25A controller 10S2P 20C

willfcc   10 mW

10 mW
Posts: 20
Joined: Apr 19 2010 9:42am
Location: Gresham, Oregon

Re: Troubleshooting help

Post by willfcc » Mar 26 2011 9:07pm

More info...
I hooked up my SLA pack, and the motor works!

Why would it work on SLA, but not lipo?

SLA pack is at 51.5v, lipo is 41.4.

Oh crap. There it is right there...

For the SLA pack at 48v, I set the CA low volt cutoff to 44. My lipo pack is only 41.5. Resetting the CA to 38v cutoff made it work.
RANS Rocket Recumbent
Sidewalker Willy
ebikes.ca / Grin Technology 9C 2805 12x5 Infineon 25A controller 10S2P 20C

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