Regarding DCS power supply issues
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Two questions: 1. Two power supplies feed into the DCS power cabinet; one of them is a UPS or both are UPS. Can this power cabinet supply power to both 220VAC and 24VDC instruments and valves simultaneously? Or for other systems that require a UPS power supply, such as those powered by combustible gases? Which specifications are mentioned? 2. Is the power for the control consoles supplied via dual-power switching in the power cabinet, so that each console receives power from there, or is each console equipped with its own dual-power switching system?
Sure, it’s possible. There’s also a power module in the power cabinet that converts 220AC to 24V; these functions are taken into account in the power cabinet.
Industry requirements stipulate that DCS power cabinets shall not be used to supply power to devices that are not part of the control system
【DCS Control Instruments—Video Tutorial for Senior Engineers】It covers all of this. https://pan.baidu.com/s/1pfntW8bqeilibYhCvTbf0A?pwd=1234