The Omron CP1E-N40DR-A, also cataloged as the CP1E-N40 CPU Unit, operates as a dedicated hardware component for discrete signal processing and sequence logic execution within CP1E controller networks.

Model Identification Matrix

The model identifier string for the CP1E-N40DR-A controller specifies integrated hardware configurations as follows:

• CP1E: Identifies the primary compact PLC series platform.

• N: Designates application-type CPU module featuring enhanced serial interface options.

• 40: Defines total integrated I/O point capacity (24 digital inputs and 16 digital outputs).

• D: Specifies DC voltage input circuit configuration (24 VDC).

• R: Denotes electromechanical relay contacts for output switching channels.

• A: Signifies wide-range AC power supply requirements (100 to 240 VAC).

Operational Specifications

Internal Architecture & Firmware Integrity

The CP1E-N40DR-A architecture utilizes deterministic processing logic across its backplane bus communication layer, assuring cycle-accurate execution of sequence programs. Onboard memory structures feature complete firmware flash compatibility, maintaining system parameters and program integrity during prolonged electrical power outages. The system controller actively coordinates real-time logic execution while scaling I/O density via expansion bus interfaces.

Standard Delivery Components

• 1 x Omron CP1E-N40DR-A Controller Unit

• 1 x Integrated Terminal Block Cover Set

• 1 x Technical Installation Datasheet Sheet

Electrical Wiring & Panel Mounting Rules

• Install the base unit vertically on standard 35 mm DIN rail or secure directly via cabinet mounting holes using M4 screws.

• Maintain a clearance envelope of at least 50 mm surrounding the top and bottom ventilation openings for convective cooling.

• Route high-voltage AC power wiring physically separate from low-voltage DC input and communication signal lines.

• Connect a solid ground lead to the functional earth (FE) terminal block using copper wire rated for industrial grounding.

Technical FAQ

• Q: What is the permissible input power supply operating range for this hardware?

  A: The controller accepts nominal line voltages from 100 to 240 VAC at 50/60 Hz, with a functional operating limit between 85 and 264 VAC.

• Q: What type of switching devices are utilized on the discrete output channels?

  A: The module contains electromechanical relays capable of switching AC and DC loads up to the standard contact rating.

• Q: Does the memory architecture require continuous battery backup for user program retention?

  A: User application programs are written directly to non-volatile flash memory, securing code without relying on battery backup.

• Q: What is the total discrete I/O density built directly onto the base unit board?

  A: The unit integrates 40 total discrete points, divided into 24 VDC input channels and 16 electromechanical relay output channels.

• Q: How is expansion hardware attached to increase system I/O point count?

  A: Additional I/O modules attach to the right-side expansion bus port on the unit housing, powered directly through the local backplane.

• Q: Can communication software connect to this CPU unit using the built-in interface?

  A: Connection is established through the built-in USB peripheral port or RS-232C port using CX-Programmer software tools.

• Q: What precautions must be taken regarding input terminal wiring layouts?

  A: Shielded, twisted-pair wiring must be used for signal runs exceeding standard limits, grounding shields at the controller frame.

• Q: Is hot-swapping supported when replacing attached terminal block connectors or expansion units?

  A: No, main system AC power must be disconnected entirely before removing terminal blocks or inserting expansion module connectors.