Omron CP1E-NA20DT-D Programmable Logic Controller

Technical Overview

Compact 24VDC PLC with 12 digital inputs, 8 NPN outputs, 2 analog inputs, and 1 analog output. Offers 8K program memory, USB, and built-in RS-232C port.

Key Features

Built-in analog capability: 2 analog inputs and 1 analog output integrated on the CPU [1.1.2].
12 digital inputs (including 6 high-speed 10kHz counter inputs) and 8 digital outputs.
Solid-state NPN transistor outputs (sinking) for fast, wear-free switching.
8K steps program capacity and 8K words data memory.
Integrated RS-232C serial communication port and Type-B USB programming port.
Expandable system architecture supporting up to 3 local expansion units.
Support for temperature and analog board options to customize application requirements.

Technical Specification Matrix

Parameter	Value
Supply Voltage	24 VDC
Digital Inputs	12 (24 VDC; NPN/PNP)
Digital Outputs	8 (Transistor NPN, Sinking)
Analog Inputs	2 (0 to 10 VDC, 4 to 20 mA)
Analog Outputs	1 (0 to 10 VDC)
Program Capacity	8K steps
Data Memory	8K words
High-Speed Counters	6 inputs at 10 kHz
Communication Ports	1 x USB (Peripheral), 1 x RS-232C
Ingress Protection Rating	IP20
Operating Temperature	0 to 55 °C
Mounting Type	DIN Rail or Panel Mount
Physical Weight (kg)	0.55
Dimensions L x W x H (cm)	8.5 x 13 x 9

Industrial Applications

1. Closed-Loop Temperature and Flow Regulation

Utilizes the PLC's 2 built-in analog inputs to read real-time process data from a temperature sensor and a magnetic flow meter, while using the single analog output to drive a proportional control valve [1.2.7].

Problem Solved

Small heating or chemical mixing systems often require analog processing but cannot justify the cost of add-on analog PLC modules. This controller delivers integrated analog handling out of the box.

PID Loop ControlAnalog InputsProportional Valve ControlFlow TransmitterBuilt-in Analog I/O

2. High-Speed Conveyor Sorting and Packaging

Uses the 12 digital inputs to monitor limit switches and optical proximity sensors, relying on the 6 integrated 10 kHz high-speed counters for positioning. Fast-switching NPN transistor outputs directly actuate solenoids to trigger sorting gates.

Problem Solved

Conveyor systems with high product-throughput suffer from mechanical relay fatigue and delay. The solid-state NPN outputs switch dynamically with zero mechanical wear.

High-Speed CounterSolid-State SwitchingNPN Transistor SinkingConveyor AutomationProximity Sensor Tracking

3. Inverter-Driven Constant Pressure Pump Control

The PLC reads system pressure via a 4-20mA sensor on the built-in analog input, executing a control algorithm to output speed commands. Communication to a Variable Frequency Drive (VFD) is handled via the integrated RS-232C port.

Problem Solved

Pressure surges and pipeline hammer occur if pumps cannot run at variable speeds. This setup enables continuous speed optimization over Modbus or serial links.

VFD Speed ControlPressure TransmitterRS-232C CommunicationWater Hammer Prevention24VDC PLC Control