High Efficiency DC Series Motor Speed Controller 1244-5651 for Electric Pallet Truck or Forklift

Models 1244:

Programmable Series Motor Controllers

Curtis Models 1204M provide fully programmable control of DC series motorsperforming on-vehicle traction or pump duties. These microprocessor-based MOSFET controllers add flexibilityand versatility to the time-proven Curtis series motor controller family.

Primarily designed for batery,powered vehicle applications using either electric or hydrostatic traction. Theseinclude industrial trucks, personnel carriers, mobile elevating work platforms, and golf and utility vehicles.

FEATURES

Controllable Power

Pulse Width Modulation (PWM) control withprogrammable speed, acceleration rate, and current limit.
Short duration boost capability (5 sec, 11096 of2 min current rating). Allows clearing of obstacles,climbing ramps.
High efficiency, silent operation. Costs, heat-sinkingrequirements, motor and battery losses reduced.Low-end torque, range, and battery life maximized.

Programmable and Flexible

Fully programmable via Curtis hand-held tools or Curtis PCprogramming software model kits 1314K.
Supports multiple throttle types and high pedaldisable (HPD) options.
LED output for easy system troubleshooting viaflash codes.
Fully programmable analog throttle input for precisespeed control with a variety of signal sources.Programmable under voltage cutback caters for differentbattery types.
Programmable, variable, or fixed plug braking modes.
Plug braking diode internal to controller.
Models available without A2 busbar for applications suchas pump control that do not require plug braking.

Robust Safety and Reliability

Redundant hardware and software watchdog timers.
MOSFET short-circuit protection functions.
Programmable High Pedal Disable function preventscontroller operation if throttle is applied before key isturned on.
Contactor fault detection: controller shuts down safelyif the main contactor opens.
Contactor protection functions minimize high currentarcing to prevent contact pitting and thus preventcontactor weld failures.
PWM frequency shifts from 15.6kHz to 1kHz in hightemperature of controller, providing audible warning ofthermal cutback.
Under voltage cutback and shutdown functions protectagainst low battery voltage, including low voltage causedby external loads.
Electrical isolation to heat sink: 500VAC(≤48V);1000VAC 648V).