Typical wiring
Incorrect wiring – risk of malfunction/damage to equipment
This section provides a typical wiring diagram. The integrator can modify the configuration of the diagram according to their needs and requirements. Creating the wiring diagram for the end application is the responsibility of the integrator.
Main DC fuse
Installing a fuse on the main battery lead is recommended to ensure protection in case of a short circuit on the power circuit. The fuse is typically connected between the battery + terminal and the + lead on the controller side.
The selection of a suitable fuse is the integrator's responsibility. It is recommended that the short-circuit fuse ideally blows within approximately 2 - 3 seconds when the DC current passing through it reaches twice the DC current value for peak power at the specified voltage of the end application.
AM controller includes an internal fuse. An external fuse is still recommended for additional protection, especially in high-power applications.
Main switch
The controller has several powering options described in the Power control circuit chapter. The most common configuration uses an ON/OFF switch connected between pins KEY (5) and POWER (8).
The total length of the wires to the main switch should be shorter than 10m.
Motor
A motor with permanent magnets induces voltage (back-EMF) while spinning. This voltage is directly proportional to the motor's revolutions per minute (rpm). When the motor operates beyond its nominal rpm, it is crucial to ensure that the amplitude of the back EMF remains below the non-operational overvoltage limit.
High voltage – risk of personnel injury and/or damage to equipment
Connect the three motor phase wires to motor terminals A, B, and C. Battery is connected to BATT+ and BATT- terminals.
Motor sensors
The AM controller supports several motor sensor types. Connect the motor position sensors to the motor sensor pins (11--15) according to the sensor variant. More details can be found in the Motor position sensors chapter.
Throttle
The controller can process a wide range of analog throttles which provide output signal in the range of 0 -- 5 V. It can be a potentiometer, hall type or just an analog signal provided by a voltage source.
The controller has a dedicated +5 V power supply for the throttle. Detailed technical specifications can be found in Analog inputs.
CAN interface
The controller can be a part of a CAN system. The CAN interface can be used for commanding the controller or for data exchange between the nodes.
Detailed technical specifications can be found in CAN Bus communication interface.
Display / UART communication
For e-bike applications, a display is typically connected via the galvanically isolated UART interface.
Detailed technical specifications can be found in UART communication interface.
Digital outputs (lights, accessories)
Generic loads such as lights can be connected between VBATSW and DOUT1 or DOUT2.
Detailed technical specifications can be found in Digital outputs.