Which S7-1500 series PLC suitable for critical application.

Hello experts,which S7-1500 PLC will be suitable for below application.

System : Gas detection for process plant

Gas detector Analog sensors: 25 nos. placed at distance of maximum 1km apart

Communication :Optical Fiber 

SCADA system provided to monitor from CCR

Hello rashmisk;

Your question is so general tht it is difficult to give you an adequate reply.

For example: do you plan to have a single S7-1500 processor to control and monitor this pipeline system, or will you need a redundant pair of processors to maintain control at all times, in the event one of them becomes unavailable? And what level of redundancy would you require?

Delivery release of redundant controllers based on S7-1500 (SIMATIC S7-1500R, SIMATIC S7-1500H)

https://support.industry.siemens.com/cs/ww/en/view/109761646

This is a gas pipeline, so presumably you would need to have some form Of Safety (Failsafe) monitoring of the process; this woulsd imply a Safety S7-1500 PLC, with a Safety program for ESD and alarming.

Delivery Release for Failsafe SIMATIC S7-1500 CPU 1516F-3 PN/DP and CPU 1518F-4 PN/DP

https://support.industry.siemens.com/cs/ww/en/view/89534661

What kind of communication hardware are you planning to use to monitor the equipment on the pipelines, and what protocols will you need to support?

https://www.industry.siemens.com.cn/verticals/cn/zh/oil-gas/Pages/industrial-communications.aspx

Finally, what SCADA system will you need to develop and maintain? Would you considerr a WinCC Professional v15.1 or look for a 3rd-party product? What level of alarming, trending and reporting will you need, and will you need to work with a distributed SCADA (server + clients) in order to have the CCR connected to local stations on the pipeline?

So you would have to evaluate some design parameters for your control system, and if you want to continue with the S7-1500 you will need to make your selections carefully, to gather all the options you will need.

In Siemens' world, the proposed solutions for such applications generally goes through a PCS 7 distributed control system, based on S7-400 CPUs (optionally redundant and Failsafe) with an integrated WinCC SCADA for alarming, monitoring, trending and reporting, The Telecontrol communication system is designed for remote communications and monitoring of such applications.

Have a look at very basic presentations here:

https://w3.siemens.com/mcms/process-control-systems/en/distributed-control-system-simatic-pcs-7/simatic-pcs-7-technologies/telecontrol/Pages/SIMATIC-PCS-7-TeleControl.aspx?tabcardname=use%20in%20oil%20and%20gas

https://w3.siemens.com/mcms/water-industry/en/Documents/SIMATIC_PCS_7_TeleControl.pdf

Hope this helps,

Daniel Chartier