AC motor controller set for show debut

A Curtis Instruments product story
Edited by the Engineeringtalk editorial team Nov 27, 2006

The Model 1234 AC motor controllers is aimed at light industrial vehicles and larger pallet movers, and is available in three basic models.

Curtis will exhibit the latest addition to its range of AC motor controllers, the Model 1234, on Stand 20F80 at IMHX2007 (NEC, Birmingham, 13th to 15th March 2007).

Delivering exceptional levels of sophistication and adaptability, the Model 1234 is aimed at light industrial vehicles and larger pallet movers, and is available in three basic models - 24V/350A, 36V/300A and 48V/250A.

All Curtis AC controllers are designed to operate with the new Curtis Model 1311 handheld programmer, which features intuitive menus, an ergonomic design and a large LCD graphic screen.

For real time information on the vehicle, the controllers can connect to Curtis Model 840 LCD, which provides a cost effective means to communicate battery status, vehicle use time and service due indication and error codes.

The Curtis AC product line covers all power ranges: the Model 1230 is a lower power controller with features and price points that satisfy the requirements of smaller EVs, such as pallet movers and floor maintenance equipment: 24V up to 150A and 24V up to 200A with optional CANbus.

Models 1236 and 1238 are fully featured CANbus-compatible controllers for mid-range and larger EVs, from counterbalance lift trucks to aerial platforms, and people carriers.

Both models are suitable for single/dual drive and pump control systems.

Model 1236 power ranges are 24-36V up to 500A, 48V up to 350A and 80V up to 300A.

Model 1238 power ranges are 24-36V up to 600A, 48V up to 650A and 80V up to 550A.

Key to the flexibility and power of Models 1234, 1236 and 1238 is their incorporation of Vehicle Control Language (VCL), a programming language developed by Curtis specifically for industrial EVs.

A first in the industry and a hallmark of optimal design, VCL combines a best-in-class AC motor controller with a powerful programmable logic controller (PLC).

VCL is designed for industrial vehicle control and comes with predefined functions, such as PID, battery monitoring, I/O control and CANbus communications.

This high level, easy-to-use language provides unique input and output features, integrates functions and controls the overall operation of the vehicle.

Both OEM designers and Curtis engineers can write VCL programs to customise and create that critical market differentiation for the product.

AC controllers can be matched to most AC induction motors for optimal response, feel and performance.

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