“When selecting a remote I/O system suitable for the redesign, Anselmo had three clear requirements: to cut the amount of wiring, minimise installation time and reduce the space required,” recalls Francesco Papa of Weidmüller, who advises the Italian plant manufacturer. “Our u-remote system made it easy for us to fulfil these expectations. After analysing the automation structure together, we were able to develop a solution with Anselmo that has convinced right from the beginning.”
Depending on the type of plant, between six and nine u-remote stations are used in Anselmo's production lines. The high level of performance required in terms of communication is delivered by field bus couplers that comply with the PROFINET-IRT standard and permit fast, high-precision synchronisation between the I/Os, the control system and the moving parts of the plant. The high-performance u-remote station bus can handle up to 256 DIs/DOs in 20 microseconds. The resulting short reaction time, rapid responsiveness and high-precision mapping of operations in the plant ensure seamless meshing of production steps.
In addition, the SIL-3 power-feed modules used deliver additional advantages by allowing Anselmo to easily setup distributed safety solutions. Using a standard PLC and with standard station modules, status messages may be exchanged and actuators are shutdown safely in case of an emergency. A complex functionality is thus realised in a very simple and flexible way.
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Published in April 2014Pictures: Anselmo