Controller for electric bicycle 36V EB18 EB19 SY-WZK036-250-3

Controller EB107 is designed for 3 phase 120 degree mostly  bicycle and similar motors. This controller is designed for operation in 36 volt system. This controller cannot be used for   single phase ( 2 wire ) motor systems.

Wire connection:

1. Red and black (larger diameter) - to battery.

2. Yellow, blue, green (larger diameter without connector block) - phase wires to motor. Connect by the color.

4. Thin yellow, blue, green, red +5V, black (5 wire connector block) - to hall sensors inside the motor.

5. Thin black, green, red/black - to throttle. If the controller is operating normally, there should be a constant 4.2 V voltage between black and red color wires. Green wire voltage level should differ from 0,8 to 4,2 volts in proportion to the throttle handle turning position. If there's a constant +4,2 volt voltage between the red and the black wire but if the green wire voltage is not changing when turning the throttle it means that the throttle handle is broken. Please note -sometimes the manufacturers change the wire arrangement inside the connector blocks. Check if the wire colors match before connecting.

6.Green/yellow black -to the key switch.

The aforementioned wires are sufficient for the system to function. Other wires do not have to be connected - they are designed for supporting functions. Their count may differ depending on the controller model.

7. Blue red - to dashboard indicator.

8. Black, red, blue   - PAS ( Pedal assist system). This connection connects to the pedal revolution sensor. By European law an electric bicycle must move with pedal support. Without this connection the bicycle will go with turned throttle only without the support from the pedals.

9. White, black – two connections to the brake levers.

10. Yellow, black two connections to lights and horn.

11. Rear brake light.