Weighing devices connect transducers to fieldbuses

Both devices allow strain gauge (SG) transducers to be digitally connected to standard fieldbus systems using either CANopen or DeviceNet interfaces. The electronics can be fully PC-controlled and provide integrated, electrically isolated control inputs and outputs, which means that they can be used for both static and dynamic measurements.

The AED9401A and AED9501A offer a crucial advantage for plant engineering and automation companies seeking to install a customer-specified bus system for export; the CANopen protocol is preferred in Europe while DeviceNet systems are widespread in the American and Asian markets. With the AED9401A and AED9501A, both CANopen and DeviceNet can be used as interfaces, depending on the specification, with changeover via a software command.

Both devices are fitted with an array of special features including different filters, sampling rate adaptation, works and user characteristics, linearisation as well as over 100 structured commands that enable access to the connected strain gauge transducer or system. Other features include smart optimisation functions and control functions required for repetitive processes, for example for automatic weighing machines. Additionally, panel software suited to service, development, start-up and parameterisation are available. The system operates from a 18-30V DC supply in compliance with international industry standards. More information is available at www.hbm.com/weighing.