Motor Controllers & Throttles
We make Speed Controllers for Brushed and Brush-less DC motors. They are
Unidirectional or BI-Directional

They all feature:
  •    Over-Current, Under-Voltage and Thermal protection.
  •    High Pedal Disable.
  •    Firmware based to meet any custom Acceleration/ Deceleration.
  •    Optional Input from BMS and Firmware to shutdown after a timeout

See our throttles at the bottom of this page
Large Controllers:
Models for 24 to 200V with 500A Current limit.
Used for Cars or Car Conversions, Electric Trucks, etc.
- Uses 5K POT type throttle
- Isolated Key input to use 12V Accessory Battery to power
Key-switch.
- 10KHz Chopping frequency.
- Analog current limit with digital shutdown back up.
- Size 11x7x3.5 inches and weight  6 lb.
- Brass Bolts for power and Screw Terminals for Pot and Key
Medium Size Controllers:
24 to 200V with 200 Current Limit. For Golf Carts,
Garden Tractor, E-Boats, Solar Cars, School Project
Cars, etc.
- Uses 5K Pot or Hall effect type throttle.
- It features internal HV to 12V Converter  for Key switch.
- 10KHz chopping frequency
- Analog Current limit with digital shutdown back up.
- Uses Copper rods for power connection.
- Size 8x6x2.2  inches and Weight less than 5 lb
Small Controllers:
- 12 or 24V with 55A limit;  
-  It is used for Scooters, Electric Bikes, Tricycles,    
Go-Carts and other small vehicles.
- Uses  Quick-Connect lugs for power connections.
- Uses 5-pin header connector for Key, Brake input and Throttle.
- 4KHz chopping frequency
- Size 4.5"x3.5"x1"   Weight less than 3/4 lb.
- Environment -30 to 50 deg C.
- Low Cost, Rugged and Easy to Use.
For 24 to 72V Motor with 50 to 300A Current Limit (specify).
- Fully Solid State
- For Electric Boat, Sail Boat docking or Industrial Truck applications
requiring quick direction change.
- Two types of Direction commands are offered (specify):
I. Use 5K Pot for both; stops at 2.5K, above 2.5K goes
forward an higher faster, under 2.5K goes reverse and lower faster).
A lever type throttle is offered for this type(see photo).
II. A toggle switch for direction change and a POT for speed.
- Internal DC-DC Converter to produce 12V from HV Battery.
- Copper Rods for Power connections.
- Header connector for control (POT and Key).

Ideal for Sailboat Docking & Industrial Trucks going frequently back and forth
Potbox Throttles
5K ohm POT-Type Throttles for EV Motor Controllers:

  • Two wire 0-5K potbox..
  • Foot Pedal or Pull-Wire Models:  spring loaded for unidirectional controllers.
  • Friction loaded model: like wire type but with a knob on arm instead of wire lever.
      Designed for our EVRTC bidirectional controller (best to use on E-boats).
  • Optional 5Amp Micro-switch: opens when throttle is released.
  • Small and Low Cost.
  • can be mounted on a vertical or horizontal surface with two 8-32 screws.
  • Sizes: 3x2x1 inches for foot-pedal model.   2.5x2.x1 inches for pull wire and   
      friction loaded models.  
  •  0.5 inch mounting flange.
  • The handle is 4" long for wire model and has a 2.5" x 1.3" pedal for foot model.
  • Weight under 1 lb
  • Construction Aluminum and Galvanized steel.

• Uses 5K POT or Hall-effect throttles.
• Direction reverse; either by Pot (Pot center-stop, clockwise forward
and anti-clockwise reverse) or by a toggle switch(Pot used for speed).
• Aluminum enclosure as standard package; optionally Potted.
• Specified as BLDC voltage- Current limit. For example  BLDC24V-50A.
• Brake input:  cuts motor power when a brake contact closes.
• Tachometer output: produces pulses at motor RPM rate.
• Over-current and over-temperature protected.
• Applications for hub motors used in electric bikes, scooters,        
motorcycles, min-cars, etc.
DESCRIPTION:
These controllers output 3-phase AC to drive a brushless DC motor as function of Hall-Effect sensors of the   
motor.
They are used for industrial brushless DC motors as well as brushless Hub motors of modern EVs.

They are electronically reversible by 2 methods (specify); either by the throttle Pot only (stop for Pot center,  
forward when Pot is set above center and reverse when Pot  is below its center)   OR  by a toggle switch (Pot
used for speed only).

They feature extra signals; such as brake input (to cut the motor power) and tachometer output for EV      
speedometer.
Also they have internal HV to 12V converter to power the key switch.

TECHNICAL SPECIFICATIONS:
- Input Battery Voltage:  ordered for 24 to 360V battery
- 5K Pot or Hall-effect type throttle compatibility (specify which)
- Motor Current:  ordered for current limits in 30 to 300A range, above which over-current protection cuts the
power.
- Motor Power Wiring:  3 power wires which output 3-phase AC to the motor.
- Motor Position Sense: 5 -wires; 5V, GND and 3 sensor position readings.
- Closed contact for Brake input, it cuts the power to the motor.
- Tachometer 12V pulse; at the rate of motor RPM.
- Optional auxiliary signals: customized per customer requirements such as control of vehicle lights, etc.
- Over current and over-temperature protected
2. EVRTC Bi-Directional (4- Quadrant) Controller
1.  Brushed DC Motor Controllers
4. BRUSHLES MOTOR CONTROLLERS
Reversible Controllers for 24 to 360V Brushless motors with 30 to 300A current limits
Check our EV Charger Pages too for your conversion project.