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Curtis Controllers Model 1203C

The Curtis 1203C motor controller is designed to cater motor speed control for numerous mid-ranges to heavy-duty industrial applications ranging from small vehicle controls to power steering and much more. It is a controller that can efficiently be used for high-performing permanent magnet (PM) motors. It only requires a few external components to build a full-functioning control system.


The Curtis 1203C is available in multiple models with different specifications and parameters that are tailored to your needs. Among all Curtis motor controllers, the 1203C is a simple and efficient device for motor control with key features including stress-free installation, smooth control when accelerating or decelerating, modifiable parameters, and reliable protective features. All the power connectors and contactors are available on board with basic wiring allowing easy positioning and disassembly.


The Curtis 1203C controllers can now be purchased here in Cloud Electric, your one-stop shop for all your electric component needs. Cloud Electric is a leading distributor of electronic components in North America. We take pride in our informative product descriptions, pricing, and shipping speed.

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Curtis 12V 60A (5K-0) PM Controller 1203C-101 Curtis 12V 110A (5K-0) PM Controller 1203C-102 Curtis 24V 110A (5K-0) PM Controller 1203C-201
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Curtis 24V 110A (5K-0) PM Controller 1203C-202 Curtis 24V 110A (5K-0) PM Controller 1203C-203 Curtis 24V 110A (5K-0) PM Controller 1203C-204
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Curtis 24V 110A (5K-0) PM Controller 1203C-205 Curtis 24V 110A (WW) PM Controller 1203C-501 Curtis 24V 110A (WW) PM Controller 1203C-502
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SPECIFICATIONS

COMPATIBLE MOTOR TYPE

Permanent Magnet Motor

NOMINAL VOLTAGE RANGE

12V, 24V, 36 V

OPERATING FREQUENCY

15 kHz

THROTTLE TYPE


  • 1XX, 2XX, 3XX

Single-ended

  • 4XX, 5XX, 6XX

Center off

TEMPERATURE


  • Ambient

-10C to 45C

  • Cutback (Over Temperature)

90C

WEIGHT

283.5 g

DIMENSION

  • Length

15.24 cm

  • Width

12.7 cm

  • Depth

3.175 cm



FEATURES

The Curtis 1203C model includes cutting-edge characteristics making it an efficient controller for a variety of PMDC motors, including brushless DC electric motors.

Feature

1203C

Purpose

Regenerative Brake Control

Yes

Allows recovery of energy used for braking. This energy is then stored and used to improve the range of an electric vehicle.

Variable Drive Speed

Yes

Allows accurate vehicle control for an improved driving experience

Power MOSFET

Yes

Highly efficient, smooth, and noiseless operation

Throttle: Single-ended

Optional

Allows full off and full on controls at opposite ends of throttle and a separate component for switch intended for direction control.

Throttle: Center off (Wig-Wag)

Optional

Utilizes only one potentiometer controlling direction as well as the speed while its central part turns it off

Mounting Option: Front

Optional

Mountable in the front

Mounting Option: Back

Optional

Mountable in the back

Dual Ramp Reversing (Automatic)

Yes

Allows swift transition in terms of acceleration or deceleration when switching from forward to reverse or vice versa.

Trimpots (On Board)

Yes

Allows acceleration and brake adjustment

Allows reduction of speed for reverse function

Switch or Potentiometer (External Component)

Yes

Allowing adjustment of top speed by programming it externally

Neutral Throttle

Yes

When the vehicle is off and unmanned, it brakes motor

Electromagnetic Brake

Yes

Slows down the vehicle by creating resistance once the throttle is on neutral.

Easy Installation

Yes

No further alterations and utilizes a two-wire potentiometer



Features for Safety and Protection

It is extremely critical to have the necessary safety functionalities to protect the PMDC motor and its controller. The Curtis 1203C model comes with numerous protection features that make it highly reliable:

Feature

Purpose

Fault Detection Potentiometer

Helps in avoiding runaway conditions

Housing/Heatsink

A protective feature against heat

Current Limit

This feature is helpful for compatibility of the controller with most motors as it prevents over currents for both components

Polarity Protection

Protects the controller by remaining off when the battery wire is reversed due to installation

High Pedal Disable (HPD)

Allows a safe start as it monitors the status of the throttle. If the vehicle is prompted to start with an applied throttle, the HPD disables the operation until the throttle is back in a neutral position

Temperature Protection

Limits the current of an overheated controller and resets it after cooling down.

Cutback Function (Undervoltage)

Allows low battery operation by reducing motor current once the battery is approaching ⅔ of its nominal voltage and prevents the battery from discharging beyond the ⅔ voltage limit



APPLICATION AND USES

Curtis 1203C DC motor controllers are intended for various applications. Based on its performance and efficiency, it is best suited to be used for the following application:

  • Scrubbers

  • Small Electric Vehicles (EVs)

  • Automatic Ground Vehicles (AGVs)

  • Electric Wheelchairs

  • Power Steering Applications

  • Sweepers

  • Conveyor belts

  • Robotic Applications



INSTALLATION

The controller comes with an extremely simple and convenient wiring procedure for its fitting in your product. It has plug-type connectors that the user can easily connect and disconnect. Its battery connectors also provide a convenient way to install or remove the batteries as per the requirements of the brushless DC electric motor. However, you need the following additional components to complete the motor controller installation process.

  • Switch for On and Off function

  • Switch for Forward and Reverse control

  • Potentiometer for speed control

Detailed instructions to install the Curtis 1203C DC motor controller are available in the manual with illustrations, relevant figures, and wiring diagrams.



DIMENSIONS


WIRING DIAGRAM