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Curtis introduces AC motor speed controller with enhanced functional safety features

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article image Curtis Model 1232E AC motor speed controller

Curtis Instruments Inc. announces the launch of a very significant upgrade to the Curtis AC motor speed controller family.

The new Curtis ‘E’ series of controllers utilise a powerful dual-microprocessor logic core that meets all relevant requirements of the EN ISO 13849-1:2009 functional safety standard, and the updated EN 1175-1:1998+A1:2010 industrial truck safety standard.

The first in the ‘E’ series is the Model 1232E AC motor speed controller, which delivers best-in-class control of AC induction motors and offers high levels of functional safety. Designed for use as the traction controller on class 3 materials handling ‘walkie’ vehicles and other small battery-powered industrial trucks, Model 1232E AC motor speed controllers are equally suitable as a pump controller for auxiliary hydraulic functions on larger industrial vehicles.

Improvements over the earlier Model 1232 include:

  • Powerful dual-micro logic core allows full compliance with EN ISO 13849-1, eliminating the need for any additional safety/supervisory control modules
  • Faster 64MHz micro improves motor control, and more than doubles the VCL code execution speed
  • Additional FLASH memory gives twice the available VCL code space
  • Increased CAN Master capabilities with 6 additional VCL CAN ‘mailboxes’
Key features of Model 1232E AC motor speed controllers:

  • Curtis VCL - Vehicle Control Language is an easy-to-use programming language that allows vehicle developers to write powerful logic functions and create a ‘virtual system controller’
  • Indirect Field Orientation (IFO) vector control algorithm generates maximum torque and efficiency across the entire speed range for superb drive ‘feel’, improved speed regulation and superior gradient climbing capability
  • Curtis Auto-Tune function enables quick and easy characterisation of the motor without having to remove it from the vehicle
  • Fully compatible with any brand of AC induction motor
  • Dual-drive functionality is standard, allowing correct control of applications featuring twin traction motors
  • Dual-drive ensures smooth and safe operation, minimal tyre wear and correct load sharing between traction motors at all times
  • Configurable CANbus connection allows communication with other CANbus enabled devices
  • CANopen compatible and can accommodate both 11-bit and 29-bit CAN protocols of various profiles
  • Integrated system controller
  • Multi-function I/O pins for use as analogue inputs, digital inputs, contactor coil drivers and proportional valve drivers
  • Capable of functioning as a full CAN system master
  • Available in 24V 180A, 24V 250A, 36-48V 200A, and 48-80V 175A versions
Bylong Industries is the licensed distributor in the Pacific region for Curtis Instruments.

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