Product Overview

The Replacement Curtis AC Controller 1232SE-5321 is a 36-48V, 250A AC motor controller (inverter) engineered for speed and torque control of 3-phase AC motors. It is intended for use as an electric traction or hydraulic pump motor controller in mobile, on-vehicle applications. With a compact 180 x 140 x 73 mm black housing and an operating temperature range of -40°C to 50°C, this controller is suited to electric vehicles, electric pallet trucks and electric stackers. The 1232SE-5321 combines Curtis SE AC controller technology with a smaller, lower-cost design for a given current rating, making it a practical choice for electric vehicle projects requiring dependable power support.

Key Features

• 36-48V Voltage Range: Designed for 36-48V DC systems.
• 250A Current Rating: High peak current capability for traction and hydraulic pump motor control.
• SE Series Advantage: Curtis SE AC controllers use updated technology to increase peak current ratings for each controller size; for a given rating, SE models are smaller and lower cost than previous Curtis AC controllers.
• Field Oriented Control (FOC): Algorithms generate maximum possible torque and efficiency across the entire speed range, with superb drive feel, improved speed regulation and increased gradeability.
• Curtis VCL (Vehicle Control Language): An easy-to-use programming language that allows vehicle developers to write powerful logic functions and create a virtual system controller.
• Motor Compatibility: Easily configured to work with any AC induction or PMAC motor. Improved motor auto-characterization setup allows simple on-truck pairing with different induction motor types, and a comprehensive library of induction and PMAC motor types is stored in the controller memory.
• Dual-Drive Functionality: Standard feature that allows correct control of applications with twin traction motors, ensuring smooth and safe operation, minimal tire wear and correct load sharing between traction motors at all times.
• Configurable CANbus: Allows communication with other CANbus-enabled devices. CANopen compatible and provides 24 VCL-configurable CAN mailboxes, 10 more than earlier Curtis AC controllers.
• Integrated System Controller: More than a motor controller, it also functions as a powerful system controller with a comprehensive allocation of multi-function I/O pins for analog inputs, digital inputs, contactor coil drivers and proportional valve drivers. VCL can map and configure remote I/O on other CANbus devices, send messages to CAN displays and control and monitor the entire system.

Applications

• Electric vehicles
• Electric pallet trucks
• Electric stackers
• Electric forklifts
• Mobile on-vehicle electric traction and hydraulic pump motor control using a 36-48V DC nominal battery supply

Technical Specifications

Why Choose This Product?

The 1232SE-5321 delivers the combined benefits of high performance, high reliability and high cost performance as a replacement Curtis AC controller. Its SE series design provides higher peak current ratings in a smaller, lower-cost package than previous Curtis AC controllers at the same rating. With Field Oriented Control for maximum torque and efficiency, dual-drive functionality for twin traction motor applications, and configurable CANbus for system integration, this controller supports demanding electric vehicle, pallet truck and stacker operations. The integrated system controller capability with multi-function I/O and VCL allows control and monitoring of the entire vehicle system.

Manufacturer Recommendation

SPIDERWAY recommends the Curtis 1232SE-5321 as a replacement AC controller for electric vehicle projects requiring a perfect combination of high performance, high reliability and high cost performance. Backed by a 5-year warranty, this controller provides powerful power support for electric vehicle applications. Curtis AC controllers offer VCL development tools and training, and Curtis also provides a VCL service where Curtis engineers work with the OEM to create custom VCL code as required.

Sourcing Guide (FAQ)

What is the voltage range of the Curtis 1232SE-5321 AC controller?

The 1232SE-5321 supports 36-48V voltage options and is intended for mobile, on-vehicle applications using a 36-48V DC nominal battery supply.

What is the current rating of this controller?

The controller has a 250A current rating.

What types of motors can the 1232SE-5321 work with?

It can be easily configured to work with any AC induction or PMAC motor. A comprehensive library of induction and PMAC motor types is stored in the controller memory, and improved motor auto-characterization setup allows simple on-truck pairing with different induction motor types.

What are the dimensions and operating temperature of this controller?

The controller measures 180 x 140 x 73 mm and operates within a temperature range of -40°C to 50°C. The housing color is black.

What is the warranty period for the 1232SE-5321?

The product is covered by a 5-year warranty.

Summary

The Replacement Curtis AC Controller 1232SE-5321 is a 36-48V, 250A AC motor controller for electric vehicles, electric pallet trucks and electric stackers. It provides speed and torque control for 3-phase AC motors in mobile on-vehicle applications, with Field Oriented Control, dual-drive functionality, configurable CANbus and integrated system controller capabilities. With a compact 180 x 140 x 73 mm black housing, -40°C to 50°C operating range and 5-year warranty, it supports electric traction and hydraulic pump motor control for electric forklifts and similar electric material handling equipment.