The Omron CJ1W-PA205R is a power supply module for the CJ Series PLC platform, converting a 100 ~ 240 VAC line input to a regulated 5 VDC / 5 A / 25 W output for the CPU rack and I/O bus. Rated for 5 VDC at 5 A, the 25 W capacity must cover the total backplane draw of the CPU, all I/O units, and any special-function modules in the rack — exceeding this triggers a brownout or incomplete startup sequence.
Compliance and Approvals
Carries CE, cULus, Lloyd, and NK approvals, which means the unit is accepted for industrial control panels in North America (cULus), European machinery (CE), and marine applications (Lloyd, NK). For a validation engineer, the cULus mark supports UL 508 listing for the panel; the marine approvals (Lloyd, NK) confirm the module can handle vibration and environmental stress typical of shipboard installations.
Mounting and Wiring
Mounts on standard DIN rail and terminates via screw terminals — no special tooling needed for panel assembly or field swap. The operating temperature range of 0°C to 55°C covers most cabinet environments but requires derating or forced cooling if the panel ambient exceeds 55°C.
Sourcing and Lifecycle
Listed as Active on the manufacturer's lifecycle, so this is a current-production part — no end-of-life notice or last-time-buy window to manage.