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Kelly KDHE High Efficient Series/PM Motor Controller
Kelly KDHE High Efficient Series/PM Motor Controller

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Kelly's programmable motor controllers provide efficient, smooth and quiet controls for electric vehicles like golf carts, go-carts, electric motorcycles, forklifts and hybrid vehicles, as well as electric boats and industrial motor speed control.
Product Details

Kelly KDHE High Efficient Series/PM Motor Controller

Item # Item Name Voltage Current Price
KDH72101E Kelly KDH72101E 24V-72V, 1000A High Efficient Series/PM Motor Controller 24V-72V 1000A $872.03
KDH72121E Kelly KDH72121E 24V-72V, 1200A High Efficient Series/PM Motor Controller 24V-72V 1200A $1,066.03
KDH12401E Kelly KDH12401E 24V-120V, 400A High Efficient Series/PM Motor Controller 24V-120V 400A $551.93
KDH12601E Kelly KDH12601E 24V-120V, 600A High Efficient Series/PM Motor Controller 24V-120V 600A $775.03
KDH12801E Kelly KDH12801E 24V-120V, 800A High Efficient Series/PM Motor Controller 24V-120V 800A $969.03
KDH12101E Kelly KDH12101E 24V-120V, 1000A High Efficient Series/PM Motor Controller 24V-120V 1000A $1,230.93
KDH12121E Kelly KDH12121E 24V-120V, 1200A High Efficient Series/PM Motor Controller 24V-120V 1200A $1,551.03
KDH12151E Kelly KDH12151E 24V-120V, 1500A High Efficient Series/PM Motor Controller 24V-120V 1500A $2,036.03
KDH14401E Kelly KDH14401E 24V-144V, 400A High Efficient Series/PM Motor Controller 24V-144V 400A $678.03
KDH14601E Kelly KDH14601E 24V-144V, 600A High Efficient Series/PM Motor Controller 24V-144V 600A $920.53
KDH14801E Kelly KDH14801E 24V-144V, 800A High Efficient Series/PM Motor Controller 24V-144V 800A $1,163.03

General Functions

  • Extended fault detection and protection. The LED flashing pattern indicates the fault sources, and Green LED indicates normal operation. Controller will shut down in some fault conditions.
  • Monitoring battery voltage. It will stop driving if the battery voltage is too high and it will progressively cut back motor drive power as battery voltage drops until it cuts out altogether at the preset “Low Battery Voltage” setting.
  • Built-in current loop and over current protection.
  • Configurable motor temperature protection range.
  • Current cutback at low temperature and high temperature to protect battery and controller. The current begins to ramp down at 90°Ccase temperature, shutting down at 100°C.
  • The controller keeps monitoring battery recharging voltage during regenerative braking, progressively cutting back current as battery voltage rises then cutting off regen altogether when voltage goes too high.
  • Maximum reverse speed is configurable to half of the maximum forward speed.
  • Configurable and programmable with a host computer though RS232 or USB. Provide free GUI which can run on Windows XP/2000, Windows 7 and Vista (recommend using Kelly Standard USB To RS232 Converter).
  • Provision of a +5 volt output to supply various kinds of sensors, including Hall effect type.
  • 3 switch inputs which are activated by connection to Ground. Default to throttle switch, brake switch and reversing switch.
  • 3 analog 0-5V inputs that default to throttle input, brake input and motor temperature input.
  • Pulsed reverse alarm output.
  • Main contactor driver. Cutting off the power if any fault is detected.
  • Maximum reverse power is configurable to half power.
  • Configurable motor over-temperature detection and protection with the recommended thermistor KTY84-130. Optional CAN bus.
  • Supply voltage 8V-30V.


  • Opto-isolated technology achieve stability.
  • 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.
  • Voltage monitoring on voltage source 12V and 5V.
  • Hardware over current protection.
  • Hardware over voltage protection.
  • Support torque mode, speed mode, and balanced mode operation.
  • Configurable limit for motor current.
  • Battery protection: current cutback, warning and shutdown at configurable high and low battery voltage.
  • Rugged aluminum housing for maximum heat dissipation and harsh environment. Support fan or water cooling.
  • Rugged high current terminals, and rugged aviation connectors for small signal.
  • Thermal protection: current cut back, warning and shutdown at high temperature.
  • Configurable high pedal protection: the controller will not work if high throttle is detected at power on.
  • Brake switch is used to start regen.
  • 0-5V brake signal is used to command regen current.
  • Easy installation: 1-4V "Hall Active" throttle or "3 Wire" potentiometer (<100K) can work.
  • Standard PC/Laptop computer is used to do programming. No special tools needed.
  • User program provided. Easy to use. No cost to customers.


  • Frequency of Operation: 16.6kHz.
  • Standby Battery Current depending on the model: usually less than 2mA.
  • Controller supply voltage range, PWR, 8 to 30V (24V is preferred).
  • Controller input power, PWR: less than 10W.
  • Configurable battery voltage range, B+. Max operating range: 18V-90V for 72V controllers; 18V-136V for 120V controllers;18V to 180V for 144V controllers.
  • Standard Throttle Input:
    • 0-5 Volts (3-wire resistive pot)
    • 1-4 Volts (hall active throttle)
  • 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°C to 50°C (controller case temperature).
  • Operating Temperature Range: -30°C to 90°C, 100°C shutdown (controller case temperature).
  • Motor Current Limit, 1 minutes: 400A - 1800A, depending on the model.
  • Motor Current Limit, continuous: 200A - 900A, depending on the model.

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