On the significance of adding SIS control to new projects and the control solutions
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The plant is a large-scale chemical processing facility from the 1980s, and an SIS system is about to be installed. However, since there has been no prior experience with SIS, I would like someone to explain how the existing DCS system, which is a Yokogawa 3000 system, will interact with the new SIS system to control the plant, as well as what the roles of each system are. I heard that a Tricon system will be used; are there any connections between the software of these two systems? Could anyone provide information on the software and hardware related to SIS?
DCS is responsible for routine control, while SIS is responsible for safety interlocks. The products from the two companies can communicate with each other; a display can be set up on the DCS to facilitate switching and interlocking. The SIS workstations are located in the control room and are not meant to be operated by staff. There is a data forum for SIS, and the manufacturer also provides training.
There is a lot of information about the Tricon system on Baidu; you need to check which signals are used by both systems and which signal is provided by which system
The two systems generally communicate via Modbus or Modbus TCP. In the 1980s, was it the CS1000 from Yokogawa? If you are using FIO series modules on-site, it is necessary to confirm whether ALR121 or ALE111 is installed. TRICON modules are typically equipped with TCM4351B, which supports MODBUS and MODBUS TCP
Wouldn’t it be better to use Yokogawa’s SIS?