Configured for discrete real-time sequence execution in SYSMAC CP1E architectures, the Omron CP1E-N40DT-D (CP1E-N40DT-D CPU Unit) provides direct physical/electrical execution across 24 digital inputs and 16 sinking transistor outputs.

Technical Identifier Matrix

• Base Hardware Model: CP1E-N40DT-D

• Full Part Number: CP1E-N40DT-D

• Product Type: CPU Unit with 40 I/O Points

• Series Family: Omron SYSMAC CP1E

• Class Type: N-type Application Model (High-speed options and RS-232C port)

• Digital Inputs: 24 DC inputs

• Digital Outputs: 16 transistor outputs (NPN sinking)

Hardware Specifications

Omron Backplane Bus Velocity & Real-Time Logic Execution

The CP1E-N40DT-D CPU unit executes user programs via an internal backplane expansion architecture that links built-in I/O to local expansion modules. Standard instruction execution timing enables low latency during cyclic scanning. NPN sinking transistor outputs switch DC loads directly with minimal propagation delay, accommodating high-frequency switching tasks. Dedicated communications ports handle firmware flash programming and serial data transfers without causing scan time instability or impeding local I/O refresh cycles.

Package Contents & Ordering Information

• 1x Omron CP1E-N40DT-D Programmable Controller Unit

• 1x Removable protective terminal cover unit

• 1x Hardware specification instruction sheet

Field Installation Guidelines

• Cabinet Mounting: Mount the unit vertically onto a standard 35 mm DIN rail or secure directly to the panel backplate using M4 screws, maintaining 50 mm clearance above and below for heat dissipation.

• DC Power Wiring: Connect a regulated 24 VDC supply to the main power terminal block using AWG 18 to AWG 14 copper conductors.

• Transistor Output Protection: Wire inductive DC loads connected to the sinking transistor outputs with free-wheeling flyback diodes across the load to suppress voltage transients.

• Grounding Requirements: Wire the Functional Earth (FE) terminal to a copper ground bus bar using a short, heavy-gauge conductor with earth resistance under 100 Ohms.

Frequently Asked Questions

• Is hot-swapping permitted for expansion I/O units attached to the CP1E-N40DT-D CPU? No. Main power to the CP1E-N40DT-D must be shut down before connecting or disconnecting expansion modules to avoid backplane circuit damage.

• What voltage range is accepted by the main power supply terminals of the CP1E-N40DT-D? The unit operates on a 24 VDC nominal supply with an allowable input range between 20.4 VDC and 26.4 VDC.

• What polarity and switching style are used on the built-in output channels? All 16 digital output channels are configured as NPN sinking transistor outputs that pull the load line to the 0 VDC reference.

• How many total built-in I/O channels are available on this base unit? The controller features 40 built-in I/O channels, consisting of 24 digital inputs and 16 digital sinking outputs.

• What communication ports are available on the front panel of the CPU? The CPU provides a built-in USB 2.0 B-type port for programming and an integrated RS-232C port for serial fieldbus connections.

• What type of cable shielding is recommended for discrete input signal lines? Input signal wiring should use twisted-pair cables with 360-deg braid shields clamped directly to the panel functional earth ground.

• What functional earth resistance must be verified upon installation? The functional ground connection must be bonded directly to panel chassis ground with a resistance value measuring under 100 Ohms.

• What ambient temperature boundaries apply to storage environments for spare units? Uninstalled spare modules must be stored in original packaging in ambient temperatures between -20 and +75 deg C non-condensing.