The Omron CP1E-N40DR-D, also cataloged as the CP1E-N40 CPU Unit Hardware, operates as a dedicated hardware component for high-speed logic scanning and discrete contact switching within CP1E controller networks.

Part Number Code Structure

The model code CP1E-N40DR-D outlines specific integrated physical and electrical features on the base unit board:

• CP1E: Designates the primary compact controller architecture series.
• N: Identifies the application-type CPU configuration with extended serial connectivity options.
• 40: Specifies a total capacity of 40 built-in discrete I/O channels (24 inputs and 16 outputs).
• D: Represents 24 VDC voltage input circuits.
• R: Denotes electromechanical relay output contact circuits.
• -D: Indicates DC operational primary power supply configuration (24 VDC).

System Physical & Operating Specifications

Serial Bus Architecture & Firmware Execution

The CP1E-N40DR-D CPU utilizes deterministic execution routines to optimize backplane bus communication velocity across attached expansion modules. Built-in non-volatile EEPROM execution guarantees complete firmware flash compatibility, securing user code blocks, memory allocation tables, and system parameters during power down events. The onboard logic processor maintains high-density I/O scan speeds while simultaneously managing serial protocol traffic via the USB peripheral port and RS-232C interfaces.

Standard Delivery Hardware

• 1 x Omron CP1E-N40DR-D Programmable CPU Controller
• 1 x Terminal block protective cover plate
• 1 x Installation wiring summary sheet

Mechanical Assembly & Wiring Directives

• Secure the CPU chassis onto a standard 35 mm DIN rail or surface-mount inside a panel enclosure via M4 mounting screws.
• Maintain a minimum clearance distance of 50 mm around top and bottom ventilation grilles for natural thermal dissipation.
• Wire the main power connections to the designated 24 VDC input terminals observing strict voltage polarity.
• Terminate shield wires from input cables to the functional earth (FE) ground terminal to reduce high-frequency electrical noise.

Technical FAQ

• Q: What is the operating input power supply requirement for this CPU model?

  A: The module operates on a nominal supply voltage of 24 VDC, with an acceptable operating range spanning 20.4 to 26.4 VDC.

• Q: What is the total onboard I/O channel capacity provided by the base unit?

  A: The hardware includes 40 built-in discrete channels, comprising 24 DC inputs and 16 electromechanical relay outputs.

• Q: Can this unit retain system programs when external power is removed?

  A: Yes, application programs and parameters are permanently stored in internal non-volatile memory via firmware flash routines.

• Q: What physical ports are available for programming and serial communication?

  A: The CPU comes standard with one built-in USB 2.0 peripheral port for programming and one RS-232C serial communication port.

• Q: What is the maximum contact rating for the electromechanical relay outputs?

  A: Each relay output contact supports resistive load switching up to 2 A per point at maximum limits of 250 VAC or 24 VDC.

• Q: Does the base CPU support hot-swapping of expansion modules or wiring blocks?

  A: No, system power must be switched off prior to inserting or removing terminal blocks and right-side expansion bus modules.

• Q: What recommended wire sizes should be used for field I/O screw terminals?

  A: Connect field wiring using solid or stranded copper wires ranging from 0.2 to 1.5 mm2 cross-sectional area.

• Q: How many CP1W expansion units can be added to this CPU unit?

  A: Up to three CP1W series expansion I/O units or analog modules can be connected to the right-side expansion bus connector.