As part of the modernization, all 4 mA...20 mA signals were replaced with digital communication. Due to the wide range of devices and application possibilities, the plant operator selected PROFIBUS—connecting analysis equipment, motor starters, and frequency converters via PROFIBUS DP, and choosing PROFIBUS PA for temperature, pressure, flow measurements, and valves.
In this project, the fieldbus infrastructure consists of FieldConnex® Segment Coupler 3 and FieldBarrier. The FieldBarrier, which was originally conceived for explosion-hazardous areas, provides galvanic isolation between device connection and the fieldbus main cable. This significantly increases the installation’s tolerance for ground faults at the device connections, as they do not affect the trunk.
Using this new technology requires supportive training of personnel. For “training on the job”, the automation technicians in Trieste elected to implement the installation and configuration. During this phase, Pepperl+Fuchs experts provided advice and assisted in technical clarifications.