I don't know all the work you had to do for this video, but the way you explain is great. If you want to continue with these tutorials it will be fantastic.
When adding the redundant 700s contractors, you say SISTEMA automatically creates the underlying hierarchy.However when I tried it fails to do so, it doesn’t do anything and has three error messages, saying no category was defined, not all the conditions of PL are meant and for this subsystem an invalid MTTFD value of less than three here is computed
Not entirely clear on what you are saying but it sounds like you would have a second safety function. Parallel would be a second an independent function.
From my experience and trials, this seems to be not correct, because by placing these components in the same SB, I've observed that the SISTEMA tool doesn't add up the respective PFHd values. I usually add different SB for each device in series connection, so I am sure that all PFHd values will be considered into the calculation.
Besides the cookbooks, there are also examples available from the IFA. These examples include thorough explanations of the systems with circuits, and Sistema project files.
Hi, thanks for he video. When you right click at 15:27 you get an SB with the + Symbol next to it. When I right click NEW to the SF, it adds an SB (Subsystem) but without the + symbol to allow for multiple channels. I must be doing something wrong. Any suggestions Thanks, Shane
Hi Shane, I had the same issue and have just figured it out. You can find a proper guide in section 4.6 "Subsystems as groups of blocks within a rigid structure" of the SISTEMA cookbook 1. The short of it is: 1. Open the PL tab of your subsystem. 2. Select "Determin PL/PFHD from Category and DCavg...". 3. Open the Category tab. 4. Select the relevant category of your safety subsystem. After following these steps the Expanding icon should now display for your subsystem on the left side
Download it from Rockwell's website. It must be saved locally and not on a server. www.rockwellautomation.com/en-us/capabilities/industrial-safety-solutions/safety-automation-builder.html
