CAN-bus

Source:     Posted by:     Click:443     date: 2010-1-25 21:40:07     Keyword: LED

If the future of off-highway power-trains is electronic control, which it certainly seems to be, and if the future of off-highway hydraulics will revolve around complete systems, then CAN-bus controllers are the right candidates to pull all the discrete components together as a true system.

CAN, or controller area network, systems were originally developed for use in the automotive world and have begun to find their way to the heavy-duty markets. With an international standard bus system for mobile applications, ISO 11898 in-place, there will be more, not fewer CAN-bus-controlled hydraulic systems in the future.

The Flo Draulic Group is marketing a CAN-bus system as a programmable controller that operates independently as a measuring, driving or controlling device for sensor-actuator management for off-highway hydraulic systems.

Targeted specifically at the off-highway equipment markets, especially agriculural, material handing, construction equipment, community/highway service and other various special vehicles, the ESX system is designed as a controller for the complete electrohydraulic system. This controller system works independently as a measuring, driving or controlling device for sensor-actuator management and is capable of executing a number of separate or related tasks in real time.

The heart of the system is an Infineon C167CR 16-bit, 20 MHz processor, with a CAN 2.0B interface, standard and extended formats, in low- or high-speed interfaces to 1 Mbit/sec. The processor has flash memory to 512 Kbytes, RAM to 256 Kbytes and EEPROM to 8 Kbytes. An RS232 interface is used that is programmable to a maximum 19200 baud rate. There are eight analog inputs, 16 digital/rpm inputs and 12 pulse width modulation (PWM)/digital outputs - eight at 4.0 amps, and four at 2.5 amps.