1. Saves on hardware quantity and investment.
Because the intelligent devices distributed at the front end of the equipment in the fieldbus system can directly perform a variety of sensing , control , alarm and calculation functions, the number of transmitters can be reduced. There is no need for separate controllers, computing units, etc., nor for the signal conditioning, conversion and isolation technology and other functional units of the DCS system and their complex wiring. An industrial control PC can also be used as an operator station, thus saving a lot of hardware investment. Due to the reduction of control equipment, the floor space of the control room can also be reduced.
2. Saves on installation costs.
Wiring in a fieldbus system is very simple. Since multiple devices can typically be connected to a single twisted pair or cable, the amount of cables, terminals, cable trays, and conduits used is greatly reduced, as is the workload for wiring design and connector calibration. When adding field control devices, there is no need to install new cables; they can be connected to existing cables nearby, saving investment and reducing design and installation work. According to calculations from typical pilot projects, installation costs can be reduced by more than 60%.
3. Save on maintenance costs.
Because the field control equipment has self-diagnostic and simple fault handling capabilities, and transmits relevant diagnostic and maintenance information to the control room via digital communication, users can query the operation, diagnostic, and maintenance information of all equipment to analyze the cause of faults early and quickly resolve them. This shortens maintenance downtime, and the simplified system structure and wiring also reduce maintenance workload.
4. Users have a high degree of initiative in system integration.
Users can freely choose equipment from different manufacturers to integrate their systems. This avoids being "limited" by choosing a particular brand, and prevents them from being at a loss due to incompatible protocols and interfaces during system integration. It puts the initiative entirely in the hands of the user during the system integration process.
5. Improved the accuracy and reliability of the system.
Due to the intelligence and digitization of fieldbus devices, compared to analog signals, it fundamentally improves the accuracy of measurement and control and reduces transmission errors. Simultaneously, the simplified system structure, reduced equipment and wiring, and enhanced internal functionality of field instruments reduce signal round-trip transmission and improve system reliability. Furthermore, its standardized equipment and modular functions offer advantages such as simple design and ease of reconfiguration.
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