How is the safety barrier powered?
Thread Content
For safety barriers in DCS system cabinets, is bottom-mounted power supply better or rail-mounted power supply better? What are their respective advantages and disadvantages? Including cost, failure rate, and so on. I’ve noticed that some design institutes choose between baseplate-based or rail-based power supply methods depending on the type of signal, such as whether it’s a control-related circuit or just an indication circuit; they use different approaches for each case. What is the reason for this?
The bottom-plate type of safety barrier looks much better; the bottom plate is powered centrally, while the guide rails are powered separately. The bottom plate is clearly more attractive, though its cost is higher. If cost is not a concern, then the bottom-plate type is the better choice. This applies mainly to several series from MTL and P+F