8-Channel Digital Input Unit CP1W-8ET1 for PLC Expansion

CP1W-8ET1 Digital I/O Expansion Unit - Product Overview

The Omron CP1W-8ET1 is a premium digital input/output expansion module designed to extend the capabilities of compatible CP1-series programmable logic controllers (PLCs). This industrial-grade unit delivers 8 digital input channels and 8 digital output channels in a single compact module, providing system integrators with a cost-effective solution for expanding control capacity without requiring additional PLC hardware. Engineered to Omron's rigorous quality standards, the CP1W-8ET1 features robust construction, reliable performance, and seamless integration with existing CP1 PLC systems, making it an essential component for modern automation applications where modular expandability is required.

Key Features and Benefits

• Optimized I/O Configuration: 8 digital inputs (24 V DC, compatible with both sinking and sourcing configurations) paired with 8 digital transistor outputs (NPN sinking type) in a space-efficient design
• Industrial-Grade Electrical Performance: Wide input voltage range (21.6-26.4 V DC) with ±10% tolerance ensures stable operation in environments with power fluctuations
• High-Current Output Capacity: Each output channel supports 0.5 A continuous current (2 A maximum combined load) for driving industrial actuators, small relays, and indicator lamps
• Compact DIN Rail Mounting: Space-saving dimensions (35 × 90 × 65 mm) with 200 g weight enables high-density panel installations
• Energy Efficient Operation: Low power consumption design requiring only 100 mA at 5 V DC through the PLC expansion bus
• Advanced Noise Immunity: Photocoupler isolation between I/O circuits and internal logic provides superior protection against electrical interference
• Rapid Response Characteristics: Industry-leading ≤1 ms response time for both input sensing and output switching operations
• Omron Quality Assurance: Backed by a comprehensive 1-year manufacturer warranty against defects in materials and workmanship

Industrial Applications

• Factory Automation Systems: Ideal for expanding I/O capacity in PLC-controlled production lines, robotic workcells, and assembly stations
• Machine Tool Control: Provides additional control points for CNC equipment, presses, and other industrial machinery
• Material Handling Solutions: Perfect for conveyor control systems, automated storage/retrieval systems, and palletizing equipment
• Packaging Machinery: Enhances control capabilities for form-fill-seal machines, labeling systems, and carton erectors
• Process Control Installations: Suitable for discrete control applications in chemical processing, food production, and pharmaceutical manufacturing
• Building Automation: Can be integrated into environmental control systems, access control, and lighting management applications

Detailed Technical Specifications

Parameter	Specification
Manufacturer Part Number	CP1W-8ET1 (Genuine Omron Component)
Input Specifications	8 points, 24 V DC (sinking/sourcing compatible), 4.7 kΩ input impedance
Output Specifications	8 points, NPN transistor (sinking type), 100 mA minimum load current
Input Voltage Range	21.6 - 26.4 V DC (24 V DC nominal with ±10% tolerance)
Output Current Capacity	0.5 A per point (2 A maximum total current across all outputs)
Output Residual Voltage	1.5 V maximum (at rated output current)
Physical Dimensions	35 mm (W) × 90 mm (H) × 65 mm (D) | 1.38" × 3.54" × 2.56"
Unit Weight	200 g (0.44 lbs) ±10%
Power Requirements	5 V DC, 100 mA (supplied through PLC expansion connector)
Isolation Characteristics	Photocoupler isolation (I/O to internal circuit), 2,300 V AC for 1 minute
Response Performance	≤1 ms for both input ON/OFF response and output switching time
Environmental Ratings	Operating: 0°C to 55°C (32°F to 131°F) | Storage: -25°C to 65°C (-13°F to 149°F)
Humidity Range	10% to 90% RH (non-condensing)
Vibration Resistance	10-57 Hz, 0.075 mm amplitude | 57-150 Hz, 9.8 m/s² acceleration
Shock Resistance	147 m/s² (3 times each in X, Y, and Z directions)
Warranty Coverage	1-year limited warranty from date of purchase (proof of purchase required)

Installation and Compatibility Notes

The CP1W-8ET1 expansion unit is designed for direct connection to compatible CP1-series PLCs via the built-in expansion connector. For proper operation, ensure the host PLC has sufficient power capacity to support additional expansion units. The module features a secure DIN rail mounting system (35 mm rail compliant) with positive locking mechanism. All wiring should be performed by qualified personnel in accordance with local electrical codes and safety regulations. The unit is rated for Pollution Degree 2 environments and requires installation in an IP20 or better enclosure for proper protection.

Ordering Information

When ordering the CP1W-8ET1 digital I/O expansion unit, specify the exact model number to ensure compatibility with your CP1-series PLC system. This product is shipped complete with unit only - all mounting hardware and connectors are included. For optimal system performance, we recommend using Omron-approved accessories and following the installation guidelines provided in the CP-series operation manual.