Hi,
Tried the 3.3 V to get the charging going today but not much luck.
I used 2 AA batteries at 1.6 Volt in series to create the 3.3V supply and then used a 10kOhm resistor and connected them to the bike. minus of the cell pack to B- and the resistor to one of the pins (tried both, same result)
The display does wake up, goes through it's startup sequence where the speedo will display 111,222,333,444....999 and also the green charge LED lights up steadily throughout the start-up sequence.
The green charge led then goes out for 3 seconds, and then starts to flash rapidly for 10 seconds and then lights up continuously. The clock in the display is also on continuously.
The voltage however remains at 3.3V after the resistor, the bike doesn't pull the line low and also the contractor doesn't engage to enable charging.
Could this be due to no charge voltage being present (100+ Volt between B- and B+) ?
I don;t have the mean well's at this time but i do have a couple of TDK FPS1000-48 power supplies to charge the pack.
they output 113.4 Volts when adjusted for maximum voltage so that would be around 85% which is fine for me.
These supplies would not be for permanent mounting on the bike but for longer trips and then charge while getting a coffee or a sandwich.
If I use the onboard charger to engage the contractor and use the TDK's to bulk charge I would have 1.3+1+1 = 3.3 kW of charging power.
I also made a small circuit with an AVR microcontroller which measures the battery voltage and do 1 of 3 things.
If the battery voltage is below 98 Volts, which means either not connected, contactor not engaged or charge level below 10% the circuit does nothing.
If the battery voltage is between 98 and 112 Volt first wait 15 seconds (while flashing a LED) and then engage the 2 TDK supplies via a relay (they have on-off control). This should allow the onboard charger to properly start-up.
If the battery voltage goes over 112 Volt the relais disengages, also disengaging the TDK supplies, a LED (charge complete) will light up and the microcontroller is brought into an endless loop (only resettable by cutting and re-applying power or a rest button.
Could it also be that the 2013-2014 charger uses CAN-bus to communicate with the Delta-Q ? Zero does have 2 versions of the delta-Q charger, one for 2011-2012 and one for 2013-2014.