• PWM operating frequency: 15 kHz
• Electrical isolation to heatsink (min.): 500 VAC
• PWM operating frequency: 10 kHz
• Maximum encoder frequency: 15 kHz
• Maximum controller output frequency: 300 Hz
• Heatsink overtemperature cutoff: linear cutback starts at 85°C; complete cutoff at 95°C
• Heatsink undertemperature cutoff: complete cutoff at -40°   

• Unmatched Flexibility
  
  • Programmable for either traction or pump applications.
  • Field upgradeable software.
  • Integrated Battery state-of-charge algorithm and hour meter.
  • Fully-featured generic software and VCL for typical Warehouse Truck applications is included.
  • Comprehensive programming options and VCL allow other applications to be easily supported.
  • CURTIS hand-held or PC Windows programming tools provide easy programming and powerful system diagnostic tools.
  • Integrated status LED provides instant diagnostic indication.
• Robust Safety and Reliability
  • Dual Microprocessor architecture cross-checks critical circuits, logic, and software functions to ensure the highest possible functional safety performance level is achieved.
  • Insulated Metal Substrate power base provides superior heat transfer for increased reliability.
  • Fail-Safe power component design.
  • Reverse polarity protection on battery connections.
  • Short circuit protection on all output drivers.
  • Thermal cutback, warning, and automatic shutdown provide protection to motor and controller.
  • Rugged sealed housing and connectors meet IP65 environmental sealing standards for use in harsh environments.

Overview:

CURTIS 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. The OS also contains logic to execute OEMdeveloped software, called VCL, that can be used to enhance the controller capabilities beyond the basics.

The CAN bus communications included in the 1238, 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 1238 controllers are the ideal solution for traction, hoist, dual drive, and other motor drive and vehicle control needs.