The CP1W‑40EDT1 / CP1W‑40EDR units are mixed I/O expansion modules for the Omron CP1 family (CP1H, CP1L, CP1E), designed to increase the total digital I/O count of the PLC without enlarging the CPU footprint. The CP1W‑40EDT1 features 24‑point 24 VDC digital inputs (compatible with both PNP and NPN sensor types) and 16‑point PNP (sourcing) transistor outputs, each rated for 0.3 A at 24 VDC, making it ideal for switching sensors, small lamps, indicators, and low‑power relays in compact control panels. The CP1W‑40EDR offers the same 24‑point 24 VDC inputs but replaces the transistor outputs with 16‑point relay outputs, suitable for directly driving larger contactors, pilot lamps, and devices requiring galvanic isolation or higher current. Both modules install on DIN‑rail via the CP1W baseplate with a compact 150×90×50 mm form factor and approximate 320 g weight.
Technically, the CP1W‑40EDT1’s 24‑VDC inputs accept signal levels in the 20.4–26.4 V range, with a typical input current per signal of about 5 mA and ON/OFF delays of 0–32 ms, suitable for most standard push‑buttons and proximity sensors. The 16 PNP outputs provide 0.3 A per point at 4.5–30 V, which is sufficient for small‑to‑medium‑capacity loads, and each channel has a front‑panel LED for status indication. The CP1W‑40EDR’s relay outputs can handle higher apparent loads and mixed‑voltage circuits, with built‑in short‑circuit and overload protection per channel. Both modules communicate with the CPU over the CP1W‑series expansion bus, enabling fast, deterministic I/O scanning and integration with existing CP1‑series ladder logic and motion programs. The I/O mapping is configurable via the PLC‑programming software (e.g., CX‑Programmer), allowing flexible assignment of input/output points to machine‑function tags..
Mechanically, these units are built in rugged, plastic‑housing modules typical of Omron’s CP1‑series, with screw‑type terminal blocks for field wiring and DIN‑rail‑mount compatibility to fit alongside other CP1W expansion units. The IP rating is designed for installation inside control cabinets, with operating temperatures typically 0–55 °C and non‑condensing humidity. The 24‑input/16‑output layout simplifies wiring practices by grouping inputs and outputs in separate blocks, reducing crosstalk and noise issues in high‑EMI environments. The CP1W‑40EDT1 and CP1W‑40EDR are widely used in machine‑tool control, packaging machinery, conveyor systems, and small‑to‑mid‑scale automation lines where a single‑module I/O expansion with a mix of inputs and transistor/relay outputs is required.
