What is the power supply method for 24V-powered instruments?
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I would like to ask whether, in cases where the instruments that require 24VDC power on-site, such as fork-type switches, are located in a concentrated area, it is possible to use the following power supply method: the 24V power cables for each instrument are first connected to an on-site junction box, from which a multi-core cable then runs to the distribution panel in the control room, rather than running a separate cable from each instrument directly to the distribution panel in the control room.
No problem; that’s how we design it on our end. However, your voltage drop needs to be recalculated
Whether to supply power directly or use a power distribution box on-site to distribute the power depends on the power requirements of each instrument. Different treatment.