The Omron CP2E-N40DR-D, also cataloged as the CP2E-N40DR-D Programmable Controller, operates as a dedicated hardware component for real-time discrete I/O execution and Ethernet communications within CP2E Series Industrial Automation networks. The CPU unit manages 40 integrated points, processing 24 discrete input signals and driving 16 relay outputs for direct physical contact switching and field device control.

Technical Identifier Matrix

Hardware Specifications

I/O Density Scaling and Backplane Bus Velocity

The Omron CP2E-N40DR-D is optimized for compact control panel layouts, delivering high channel concentration across its base hardware frame. Internal data update speed is maintained by a high-velocity backplane bus structure, preserving scan time determinism during rapid discrete state changes. High-density I/O scaling allows connection of CP1W expansion modules to scale total discrete and analog point counts without overloading CPU cycle timing or disrupting Ethernet communication queues.

Package Contents & Ordering Information

• 1x Omron CP2E-N40DR-D Unit
• 1x Removable Screw Terminal Cover Assembly
• 1x Installation Manual Sheet

Field Installation Guidelines

• Mounting Setup: Mount on standard 35 mm DIN rail or surface-mount with M4 hardware. Maintain a minimum vertical clearance of 50 mm above and below the housing for heat dissipation.
• Power Connections: Connect an isolated 24 VDC Class 2 power supply to the main DC power terminals, observing polarity markers.
• Relay Output Protection: For inductive field loads, install snubber circuits across AC lines or flywheel diodes across DC lines to prevent electrical pitting of relay contacts.
• Grounding Requirements: Wire the functional earth terminal directly to the panel system ground using dedicated wire (minimum 2.0 mm sq cross-section).
• Communications Shielding: Use Category 5e Shielded Twisted Pair (STP) Ethernet cabling. Bond the cable shield to ground using a 360-deg braid shield termination clamp.

Frequently Asked Questions

• Q: What input supply voltage is required for the CP2E-N40DR-D unit?

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

• Q: What are the relay output contact ratings for this controller?

  A: The 16 relay output points are rated for a maximum switching capacity of 2 A per point at 250 VAC or 30 VDC.

• Q: What is the internal backplane current draw for the 5 VDC rail?

  A: The unit consumes 0.39 A from the internal 5 VDC rail and 0.09 A from the internal 24 VDC rail.

• Q: How many built-in Ethernet communications ports are available on the CPU?

  A: The unit features 2 integrated RJ45 Ethernet ports supporting standard Ethernet switching functionality.

• Q: Can additional I/O modules be added to the base CPU unit?

  A: Yes, up to 3 CP1W discrete or analog expansion modules can be connected via the expansion interface.

• Q: What is the rated ambient operating temperature for the controller?

  A: The system operates within an ambient temperature range of 0 to 55 deg C under non-condensing conditions.

• Q: What user program capacity does the controller provide?

  A: The CPU contains non-volatile flash memory providing 10k steps of program execution memory.

• Q: How should network cables be shielded against ambient noise?

  A: Utilize STP cabling with a 360-deg braid shield clamped directly to functional earth at the panel entry point.