Electrical Vehicles Motor Controller

OVERVIEW

Keyas programmable motor controllers provide efficient, smooth and quite controls for electrical vehicles like golf cart, go-cart, electric motorcycle, fork lift, hybrid vehicle, as well as electric boat and industry motor speed control. It uses high power MOSFET, fast PWM to achieve efficiency 99% in most cases. Powerful microprocessor brings in comprehensive and precise control to the controllers. It also allows users to set parameters, conduct tests, and obtain diagnostic information quickly and easily.

GENERAL FUNCTIONS

(1)   Extended fault detection and protection. LED flashing code indicates fault sources.

(2)   Monitoring battery voltage. It will stop driving if battery voltage is too high. It will cut back then stop driving if voltage is going too low.

(3)   Built-in current loop and over current protection.

(4)   Controller temperature measurement and protection.

(5)   Cutting back current at low temperature and high temperature to protect battery and controller. The current will ramp down quickly if controller temperature is higher than 90, and shutdown at 100. Low temperature current ramping down usually starts at 0.

(6)   The controller keeps monitoring voltage during regen. It will cut back current then cut off regen if voltage is going too high.

(7)   Configurable to limit max reverse speed to half of max forward speed.

(8)   Configurable and programmable with RS-232. Software upgradeable. Windows GUI provided.

(9)   Provide 5V sensor supply.

(10)   3 switch inputs: Default to throttle switch, brake switch and reverse switch. Closing to ground is to activate.

(11)   3 analog inputs, 0-5V: Default to throttle input, brake input and motor temperature input.

(12)   Reverse alarm output: Recirculation diodes provided.

(13)   Main contactor driver: Cutting off the power if any fault is detected.

(14)   Configurable max reverse power to half.

(15)  Thermal overload detection and protection to safeguard the motor from over temperature, with recommended Silicon temperature sensors KTY83-122.

(16)  Optional CAN bus.

(17)  18-120V power supply for 120V controller.

Intelligence with powerful microprocessor.

Synchronous rectification, ultra low drop, and fast PWM to achieve very high efficiency.

Current limit and torque control.

Low EMC.

LED fault code helps user debugging.

Battery protection: current cutback, shutdown and warning at low battery.

Rugged aluminum housing for maximum heat dissipation. 

Thermal protection: Current cuts back on low temperature and high temperature to protect battery and controller.

High pedal protection: Disable operation if power up with non-zero throttle.

Brake switch is used to start regen.

0-5V brake signal is used to command regen current.

Frequency of Operation: 16.6kHz.

Standby Battery Current: less than 1 mA.

Controller power supply current, PWR, <150mA.

Operating Voltage, B+, 18V to 136V

Analog Brake and Throttle Input: 0-5 Volts.  Producing 0-5V signal with 3-wire pot.

Reverse Alarm, Main Contactor Coil Driver, Meter.

Full Power Temperature Range: 0 to 40 (controller case temperature).

Operating Temperature Range: -30 to 90, 100 shutdown (controller case temperature).

Motor Current Limit, 1 minutes: 400-800A, depending on model.

Motor Current Limit, continuous:160-320A, depending on model.

MOUNTING

The controller can be oriented in any position as clean and dry as possible, or shield with a cover to protect it from water and contaminants.