The OMRON CP2E-N40DR-A, also cataloged as the CP2E-N40 Programmable Controller, provides 40-point cyclic I/O control within the CP2E Network model. It combines 24 discrete inputs with 16 relay outputs and operates from a 100 to 240 VAC supply.

Model Identification

The CP2E-N40DR-A belongs to the CP2E-N Network model family. The N-type provides a 10K-step program capacity, 10K-step function block capacity, 16K-word data memory, and built-in Ethernet communication.

Hardware Specifications

OMRON specifies the 40-point CP2E CPU Unit at 90 x 80 x 150 mm with a maximum weight of 640 g. For the N40 AC model, maximum system power consumption is 50 VA at 100 VAC and 70 VA at 240 VAC.

CP2E-N Network Control Architecture

The CP2E-N40DR-A uses the N-type processing architecture rather than the lower-memory E-type or S-type configurations. The controller provides 10K steps for the user program and 16K words of data memory. Its N30/N40/N60 group supports up to three CP1W-series Expansion I/O Units or Expansion Units, allowing the N40 configuration to reach 160 I/O points.

For network communication, the N40 provides two 100/10BASE-TX Ethernet ports with Auto-MDIX, automatic link-speed detection, and 100 m maximum transmission distance between a switch and node. Supported network functions include TCP, UDP, FINS, socket communication, SNTP, and DNS-related functions.

The built-in input processing includes high-speed counter functions. For N30/N40/N60 models, OMRON specifies three incremental pulse counters at 100 kHz, three at 10 kHz, two up/down counters at 100 kHz, two pulse-plus-direction counters at 100 kHz, and two differential-phase counters at 50 kHz.

Ordering Information

• 1 x OMRON CP2E-N40DR-A Programmable Controller
• 1 x Integrated CPU Unit with 24 inputs and 16 relay outputs
• 1 x Fixed input/output terminal block assembly
• 1 x Built-in Ethernet interface
• Expansion I/O Units and serial/analog option boards are separate components where required

Panel Installation and Wiring

Mounting

• Install the CPU Unit in a suitable control panel enclosure.
• Maintain physical clearance around wiring terminals and ventilation areas.
• Secure the unit according to the CP2E mechanical mounting arrangement.
• Do not treat the fixed terminal block as a hot-swappable connection point.

Power Wiring

• Apply a 100 to 240 VAC, 50/60 Hz supply within the specified operating range.
• Provide protective grounding through the designated grounding terminal.
• Keep AC power wiring separated from low-level signal and communication wiring.
• Verify supply isolation and terminal identification before energizing the controller.

Ethernet Wiring

• Use suitable twisted-pair Ethernet cabling for the selected 10BASE-T or 100BASE-TX operation.
• Keep communication cables separated from high-voltage switching and high-current motor wiring.
• Maintain the specified maximum 100 m distance between the Ethernet switch and node.
• Use shielded cabling where the installation environment requires additional electromagnetic noise control.

Frequently Asked Questions

• Can the CP2E-N40DR-A directly drive transistor pulse outputs?

  No. The N40DR-A uses relay outputs. The high-speed pulse-output function listed for CP2E models applies to transistor-output variants, not this relay-output model.

• What is the maximum expansion I/O capacity of the N40DR-A?

  The 40-point N-type CPU can connect up to three CP1W-series Expansion I/O Units or Expansion Units, giving a maximum system capacity of 160 I/O points.

• How many Ethernet ports are integrated into the N40DR-A?

  The N30/N40/N60 Network models provide two built-in Ethernet ports. The interface supports 100/10BASE-TX with automatic link-speed detection and Auto-MDIX.

• What is the operating temperature range of the controller?

  OMRON specifies an ambient operating temperature range of -20 to 60 deg C and ambient humidity of 10% to 90% without condensation.

• What program memory is available on the CP2E-N40DR-A?

  The N-type CPU provides 10K steps of program capacity and 10K steps of function block capacity. Its Data Memory Area provides 16K words.

• What power consumption should be considered for the AC supply?

  For 30/40/60-point AC CP2E CPUs, OMRON specifies a maximum of 50 VA at 100 VAC and 70 VA at 240 VAC for the maximum system configuration.

• What type of output circuit is used by the N40DR-A?

  The CP2E-N40DR-A has 16 relay outputs. This differentiates it from CP2E-N40DT-A and CP2E-N40DT1-D models, which use transistor output configurations.

• Does the CPU retain the ladder program after power interruption?

  Ladder programs and parameters are automatically saved in built-in Flash Memory. OMRON also specifies non-volatile memory areas for selected operating data.