Cycle Analyst Throttle Settings

Tyro65

100 mW
Joined
Aug 3, 2008
Messages
36
Location
Sault Ste. Marie, ON
I have a 750-watt trike motor driving the rear axle on an adult tricycle. When I crank the throttle on full, the motor cuts out after about 15 seconds, but it will run steadily if I hold the throttle at a lower power. What adjustments do I need to make in the CA to correct this?

Thanks.

Stan
 
This is the controller, but I could install a Crystalyte 408-4012 controller:
https://www.leafbike.com/products/brushless-motor-controller/common-bldc-controller/1133.html

This is the motor:
https://www.leafbike.com/products/e-tricycle-motor/750w-electric-bldc-motor/863.html

I am currently using four 12V 12Ah SLAs, but I have used a 16S LiFePO4 pack on it too.
 
Most likely you're getting LVC cutout on the controller from too much voltage sag on the batteries under load. That link says it's LVC is 40 ± 0.5 V.

It could also be the CA doing it per it's own LVC (which you can change in the settings)--typically the CA setting and controller setting should be the same (high enough to keep the battery healthy without running it down to "dead", low enough to let you use as much of the battery capacity you need without cutting out all the time at low charge levels).

The BMS (if any, not usually one on SLA) would generally be lower to just protect the battery against damage. If the BMS cuts out then it turns system power off. If controller or CA cuts out it just stops motoring.


What does the CA show the voltage dropping to when the throttle cuts out? Vs what it shows under other conditions?

What does the CA menu show for the Low Voltage cutout?

https://ebikes.ca/product-info/grin-products/cycle-analyst-3.html
go down to
Click for Explanation of Battery Settings
and
[ Batt->Vlt Cutoff ]
 
Amberwolf, thank you.

As soon as we get a bit of warmer weather, I'll apply your solutions -- which, now that the snow is flying, may not be until spring.
 
Back
Top