Hi,
You can do this using the hidden ebrake wire on the JST throttle connector on the Phaserunner L10.
Peel back the heatshrink covering the throttle JST connector, you should find that there are two wires going to Pin 3 of the throttle JST - a blue and a green wire.
The GREEN wire is the throttle wire and this is tied to the throttle line coming from the CA3.
The BLUE wire is the ebrake wire which triggers proportional regen.
From the factory these wires are joined together so that the CA3 can send both an incoming throttle signal at 1.1V - 3.5V and an incoming ebrake signal at 0.0V - 0.8V down the same wire and the throttle/brake voltage map separates what is a throttle signal and what is a regen signal.
If you separate these wires you can send a separate ebrake signal into the BLUE wire which will activate regen. (i.e. cut the green throttle wire off the pin and tape it up). This means you can use the front ebrake connected to the CA3 to cut the throttle, and the rear ebrake connected to the JST on the controller activate regen.
Connect your front brake to your CA3, set setting Ebk->PropRegen to disabled and set EBk->Brake Out to 0 in the CA3. This will make the CA3 cut out the throttle signal to the controller (set it to 0v) when the front brake is applied.
Option 1
Front brake = throttle cutout
Rear brake = fixed amount of regen
Connect the rear brake to the JST on the controller (after cutting off at taping up the green wire). If you have either a 3-pin (latching hall e.g. Minshine MS-BK-1R) type brake switch, or a 2-pin (sometimes described as Normally Open ("NO") or "Closer type") microswitch then connect the switch between the BLACK and BLUE wires on the JST on the controller. If you have a 2-pin brake switch, you may also need to connect a 10k Ohm pullup resistor between the Pin 1 - 5v (RED) and Pin 3 - Sig (BLUE) to prevent the signal pin from floating and giving false signals.
Use the Phaserunner suite to configure the regen. Set "Maximum Braking Effort Voltage Reading" = 0.00V and set "Max Regen Batt Current" to whatever you want your fixed regen current to be. When you pull the rear brake, the controller will activate regen at this fixed rate.
Option 2
Front brake = throttle cutout
Rear brake = proportional amount of regen controlled by throttle position
N.B. For this you will need Normally Open (NO) aka "Closer" type microswitch brake switches as above, but you cannot use hall effect brake switches like the Minshine.
Connect the front ebrake and set the settings same as Option 1.
Prepare the Phaserunner throttle JST as before by cutting and taping up the green wire.
Splice a wire into the throttle signal where it goes IN to the CA3 (CA3 throttle input JST Pin 3 - Green). Connect this new wire to Pin 1 of the rear ebrake switch. Connect Pin 2 of the rear ebrake switch to the controller JST Pin 3 - BLUE. Connect a 10k Ohm pullup resistor to the controller JST throttle connector between the Pin 1 - 5v (RED) and Pin 3 - Sig (BLUE) to prevent the signal pin from floating and giving false signals.
Use the Phaserunner suite to configure the regen. Set "Maximum Braking Effort Voltage Reading" to the same as "Throttle High Voltage Reading" and set "Brake Off Voltage Reading" to the same as "Throttle Low Voltage Reading". Set "Max Regen Batt Current" to whatever you want your maximum regen current to be. When you pull the rear brake, the controller will activate regen at a proportional amount set by the throttle handle.
The 3rd brake line on the ca allows for an effective brake signal, instead of just a switch. This way you can do ramp up braking for an instance, or use it for proportional regen.
I don't believe this is correct. There are three pins connected out of a possible four pin spaces on the CA3 brake connector. They are 1 +5V, 2 GND, 4 EBK (signal). The addition of the third pin was the addition of a +5V to enable use of latching hall effect brake sensors which require a power supply. Unless something has changed in the last 12 months to my knowledge there is no analogue brake input on the CA3 other than the fact it can use the regular throttle input combined with the ebrake input to generate a proportional regen signal to the controller.
Thanks,
Oli.