Curtis AC induction motor controllers

Curtis AC induction motor controllers

Curtis 1234, 1236, and 1238 AC induction motor controllers deliver smooth 

power unlike any previous vehicle control system. They provide unprecedented 

flexibility and power through inclusion of a field-programmable logic controller 

embedded in a state-of-the-art motor controller. 

The embedded logic controller runs a fully functional field-oriented AC 

motor control operating system (OS) that can be user-tailored via parameter 

modification; see Section 3. The OS also contains logic to execute OEM-

developed software, called VCL, that can be used to enhance the controller 

capabilities beyond the basics; see Section 6. 

VCL (Vehicle Control Language) is an innovative software programming 

language developed by Curtis. Many electric vehicle functions are uniquely 

built into the VCL code, and additional functions can be OEM-controlled using 

VCL code. VCL opens new avenues of customization, product differentiation, 

and responsiveness to the market. 

The CAN bus communications included in the 1234/36/38, as well as 

in many other Curtis products, allow these AC induction motor controllers to 

be part of an efficient distributed system. Inputs and outputs can be optimally 

shared throughout the system, minimizing wiring and creating integrated 

functions that often reduce the cost of the system.

Curtis 1234/36/38 controllers are the ideal solution for traction, hoist, 

dual drive, and other motor drive and vehicle control needs.

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