Power System
The Elcano power supply is a 36V battery on the Catrike recumbents or a 48V supply on the ELF. The picture shows three 12V lead-acid batteries connected in series to provide 36V. The fourth box in the top of the picture is a plastic case that houses a circuit board and two DC-DC converters. The converters output a 12V supply and a 24V supply. All power lines are color-coded with the right color wire when possible and with the right color Anderson connectors. The power lines are:
- Ground: Black
- Pink: 5V (not commonly used between modules)
- Orange: 12V
The steering servo runs on 12V.
Brakes are held on with 12V.
All Arduinos have a Vin pin that can take 12V. The Arduino internally converts the voltage to 5V and 3.3V.
The four-wire CAN connection consists of CAN hi, CAN lo, Ground, and 12V. This connection powers the Raspberry Pi, Receiver board and Scanse Sweep board.
- Purple: 24V
Used to apply the brakes.
- Green: Either 12V or 24V
This is the power line to the brake solenoids. It is initially 24V to apply the brake, then reduced to 12V to hold the brake on.
- Red: 36V or 48V power
Main power goes to the E-Bike controller, which converts DC power to three phase AC to drive the electric motor. The circuit board inside the box with the DC-DC converters does some conditioning on the main power before sending it on to the E-Bike controller.
NEXT > Low Level
