Backplane power for a dual-redundant rack
The Omron CS1D-PD024 is the power supply module that feeds the CS1D redundant PLC backplane. It takes a 24VDC input and delivers a regulated 5VDC rail at 4.3 A — enough for a fully loaded rack of CS1D CPU, I/O, and communications modules, including the dual-redundant configuration where two power supplies run in parallel.
What the output rating means for your rack
The 5VDC, 4.3 A, 28 W output is the total budget for all backplane-connected modules. Each CS1D CPU draws roughly 0.8–1.2 A from the 5V rail depending on the model and expansion; a 64-point input module pulls about 0.15 A. Add up the 5V current draws of every module in the rack — the sum must stay under 4.3 A or the supply will current-limit and the system will brown out. The backplane mounting means the module snaps into the CS1D rack without separate wiring — power and ground run through the backplane connector, not terminal blocks. This keeps the panel layout clean and reduces the chance of a loose power wire dropping the rack.
Approvals and lifecycle reality
Carries CE, cULus, Lloyd's Register, and NK (Nippon Kaiji Kyokai) approvals — the Lloyd and NK marks are the ones to note if this rack is on a vessel or offshore installation. The cULus listing covers North American panel builds.