Obsolete CP1E — sourcing reality for a line-down spare
The Omron CP1E-E30DR-A is a compact PLC from the CP1E series, offering 18 digital inputs and 12 relay outputs in a single unit that accepts 100-240 VAC supply. It is officially marked obsolete — current-production status ended, so availability runs through independent surplus channels rather than factory-direct. For a maintenance-spares buyer or line-down situation, the key fit question is whether the I/O count and type match the existing panel wiring: 18 digital inputs and 12 relay outputs, all in one chassis, with no on-board display. The 2K word memory is tight for anything beyond basic sequencing — this was the entry-level CP1E, not the CP1L with 32K words.
Mounting and approvals for panel replacement
Approvals include CE, cULus, Lloyd, and NK — the Lloyd and NK marks mean it was originally qualified for marine applications (Lloyd's Register and Nippon Kaiji Kyokai), so it satisfies classification society requirements for shipboard or offshore installations. Operating range is 0°C to 55°C, standard for cabinet-mount PLCs without forced cooling.
Expandability and programming constraints
Expandable to 40 modules across 3 racks maximum — that's the full CP1E expansion bus, not a CP1L limitation. The USB port handles programming and monitoring via CX-One software; no Ethernet or option card slot on this base unit, so remote HMI or fieldbus integration requires an external gateway. Memory is 2K words — roughly 2000 instructions in ladder logic before the program overflows. For a validation engineer: this PLC has no battery backup (the CP1L peers do), so program retention on power loss depends on flash write cycles, not a replaceable battery. The 2K word ceiling means the application must be lean; no room for extensive comment blocks or data tables.