Monday, January 28, 2008

Small Force Sensor Offers Mounting Options

Designed for tension or compression force measurements where space is tight, RDP Electronics' Model 3124 sensor can be mounted in an existing system within a restricted work area. It suits applications when space is limited, such as fluid power transfer, hydraulic piston monitoring or structural development tests It can be directly mounted to the side of a hydraulic cylinder.

Side-mounted cable connections allow cable assemblies to be supported without affecting movement of the cell during tension or compression loading.

Ease of mounting and affordability make these cells well suited for simultaneous testing of multielement systems. Contained in a compact, small-diameter carbon steel housing the Model 3124 is available in ranges from 20 to 125kN.

Friday, January 18, 2008


SM-EtherCAT extend the functionality of Control Techniques' variable speed drives, providing support for real-time, high-performance Ethernet communication. Control Techniques' Product Manager, System Integration Products, Imad Rajraji said 'EtherCAT is the first in our planned range of real-time Ethernet solutions with more protocols to follow'.

The module is for use with Control Technique's full range of AC and servo drives from 0.37kW simple conveyor or pump control, through high-precision servo applications and 1.9MW multimode drives.

This allows customers to standardise their network across the whole machine. The SM-EtherCAT module is the latest in a wide range of communication options that already include Ethernet/IP, Modbus TCP/IP as well as traditional fieldbus. EtherCAT is being requested by customers because of its excellent performance and bandwidth, allowing users to get good dynamic performance from their drives.

It covers the whole range of communication requirements from high-end motion control through to central factory computer control of conveyors and pumps. Control Techniques' SM-EtherCAT module can operate at cycle times down to 250us, synchronising the drive's position or speed loop to the communications network, improving overall system performance. Control Techniques now has 24 SM option modules, used to extend its I/O, feedback, communications, automation and motion capability.

All AC and servo drives use the same option module format allowing flexible connectivity and functionality with Digitax ST, Control Techniques' new servo drive, Commander SK, as well as Unidrive SP, which has a total of three internal option slots for modules.