Could the experts please explain what function these two power modules serve? ? ? ? ?
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Big and small, all belonging to Weidmüller – what’s the use of that? ? ?
Two large and one small – this constitutes one set; the two large units are used to convert 220VAC to 24VDC, while the smaller unit serves to create a redundant configuration using those two large units.
Two large and one small – this constitutes one set; the two large units are used to convert 220VAC to 24VDC, while the smaller unit serves to create a redundant configuration using those two large units.
The larger one is a 24VDC DC power supply, typically used to power cards, while the smaller one is a 24V isolated supply, generally used to power 24V loads on-site
Just to add. The smaller ones serve to stabilize and rectify the voltage; diodes are shown in the diagram to prevent voltage reversal in case there is a problem with one of the power supplies, thereby avoiding impacts on the output voltage
Redundant module to prevent interference between the two 24V power supplies
The larger one is the power supply module, and the smaller one is the redundant module
Redundant power supplies; the one in the middle is the disturbance-free switching module
Redundant module to prevent interference between the two 24V power supplies