Having the output command in the Safety Instrumented System (SIS) would depend on the risk reduction requirements for the facility/process. Not all facilities require a SIS, so in systems that do not, the output would still be in the DCS.
@@ZohaibJahan It’s recommended the limit switches be connected directly to the SIS along with the signal to the valve so the entire loop or safety instrumented function (SIF) is all in the SIS. Best design practice is to keep the SIS and DCS loops completely separate. So yes if your limit switches are connected to the DCS you would want to move them to the SIS.
Stefan Haesen I plan to make some more videos on DeltaV in the future. It might be a year or so though. I’m busy teaching other courses. In the mean time, if you have access to DeltaV software, the Books Online help has lots of information!
A special thanks to Mike Semotiuk and Rick Zalesak for allowing me to use their completed DCS Lab 2 for this video. This lab was completed in the fourth period of the Instrumentation and Control Technician program at Red Deer College.
Normally, Limit Switches ZSO/ZSC are wired in DCS and Output command in SIS. So this logic will not work. Any other way?
Having the output command in the Safety Instrumented System (SIS) would depend on the risk reduction requirements for the facility/process. Not all facilities require a SIS, so in systems that do not, the output would still be in the DCS.
You are right. My comment was regarding Oil and Gas where SIS is mandatory.
@@ZohaibJahan It’s recommended the limit switches be connected directly to the SIS along with the signal to the valve so the entire loop or safety instrumented function (SIF) is all in the SIS. Best design practice is to keep the SIS and DCS loops completely separate. So yes if your limit switches are connected to the DCS you would want to move them to the SIS.
Nice video, If you could make a more in depth video of the device control function block... Or any other delta V subject...
Stefan Haesen I plan to make some more videos on DeltaV in the future. It might be a year or so though. I’m busy teaching other courses. In the mean time, if you have access to DeltaV software, the Books Online help has lots of information!
A special thanks to Mike Semotiuk and Rick Zalesak for allowing me to use their completed DCS Lab 2 for this video. This lab was completed in the fourth period of the Instrumentation and Control Technician program at Red Deer College.
Informative video Clifford. Please upload more of delta v videos on control module configuration
If possible please upload examples of Batch process control loops logic.
Great video! Thanks.
Tyler Wasilenko Your welcome!