16-Point Digital Input CP1W-32ET1 PLC Expansion Module with 16 Outputs

Product Overview

The Omron CP1W-32ET1 represents a premium 32-point digital I/O expansion unit from Omron's renowned CP1W series, specifically engineered to extend the capabilities of compatible CP1 series programmable logic controllers (PLCs) in industrial automation environments. This high-performance unit delivers a precisely balanced configuration of 16 digital inputs (24V DC) and 16 relay outputs (2A @ 250V AC/24V DC), offering exceptional flexibility for diverse control applications. Manufactured to Omron's exacting quality standards, the CP1W-32ET1 features robust construction with industrial-grade components, ensuring reliable operation in demanding conditions. The unit's compact footprint (90 × 65 × 75 mm) and DIN rail mounting capability make it ideal for space-constrained control panels. Backed by a comprehensive 1-year manufacturer's warranty, this expansion unit provides a cost-effective solution for expanding I/O capacity without compromising system reliability.

Key Features and Technical Advantages

• Optimized I/O Configuration: 16 high-speed digital inputs (24V DC, sink/source compatible with 4.7kΩ input impedance) paired with 16 high-capacity relay outputs (2A @ 250V AC or 24V DC) for maximum application flexibility.
• Industrial-Grade Relay Outputs: High-performance relays with 2A contact rating (250V AC resistive, 24V DC resistive) featuring arc suppression technology for extended operational life (minimum 100,000 operations at rated load).
• Space-Efficient Design: Compact dimensions (90mm width × 65mm height × 75mm depth) with lightweight construction (400g ±5%) enables high-density panel mounting without sacrificing performance.
• Advanced Electrical Protection: Comprehensive isolation with photocouplers on all input channels (1,500V AC for 1 minute) and relay isolation on outputs ensures system integrity in electrically noisy environments.
• Extended Environmental Tolerance: Certified for reliable operation across industrial temperature ranges (0°C to 55°C) with storage capability from -25°C to 75°C (20-85% RH non-condensing).
• Energy-Efficient Operation: Low power consumption design requiring only 50mA @ 5V DC (internal via PLC bus) and 80mA @ 24V DC (external) for reduced system power requirements.
• Simplified Installation: Tool-less DIN rail mounting (TS35×7.5 or TS35×15 compliant) with secure locking mechanism for vibration-resistant installation in control cabinets.
• Seamless CP1 Series Integration: Direct plug-in compatibility with Omron CP1E/CP1L/CP1H PLCs through dedicated expansion connector, automatically recognized by the host controller.
• Fast Response Characteristics: Input response time ≤1ms (ON/OFF) and output response ≤15ms (ON)/≤5ms (OFF) ensures precise timing for critical control applications.

Industrial Applications

• Manufacturing Automation: Ideal for expanding I/O capacity in automated assembly lines, robotic workcells, and precision machining centers requiring additional control points.
• Packaging Machinery: Reliable solution for case packers, filling machines, and labeling systems needing both input sensing and output control expansion.
• Material Handling Systems: Enhances control capabilities for conveyor systems, sortation equipment, and automated storage/retrieval systems.
• Process Control Applications: Suitable for batch processing, mixing systems, and temperature control in food processing, pharmaceutical, and chemical industries.
• Infrastructure Automation: Effective for building management systems, including elevator controls, HVAC systems, and energy management applications.
• Test and Measurement Equipment: Provides reliable I/O expansion for production testing stations, quality inspection machines, and laboratory automation setups.

Detailed Technical Specifications

Parameter	Specification
Manufacturer Part Number	CP1W-32ET1 (Omron genuine product)
I/O Type	16-point digital input / 16-point relay output
Input Voltage	24V DC ±10% (sink/source compatible)
Input Current	4.7mA typical @ 24V DC
Input Impedance	4.7kΩ ±5%
Output Type	SPST-NO relay contacts
Contact Rating	2A @ 250V AC (resistive), 2A @ 24V DC (resistive)
Contact Material	Ag alloy (silver alloy) for high durability
Electrical Life	100,000 operations minimum at rated load
Mechanical Life	20,000,000 operations minimum
Isolation Voltage	Inputs: 1,500V AC for 1 minute; Outputs: 2,000V AC for 1 minute
Power Consumption	Internal: 5V DC @ 50mA (via PLC bus); External: 24V DC @ 80mA
Mounting	DIN rail (TS35×7.5 or TS35×15) with locking mechanism
Terminal Type	Screwless clamping terminal (accepts 0.3-2.5mm² wires)
Environmental Rating	Operating: 0°C to 55°C (20-85% RH non-condensing) Storage: -25°C to 75°C (10-95% RH non-condensing)
Vibration Resistance	10-57Hz: 0.075mm amplitude; 57-150Hz: 9.8m/s² acceleration
Shock Resistance	147m/s² (3 times each in X, Y, Z directions)
Warranty Period	1-year limited warranty from date of purchase
Certifications	CE Marked (EMC Directive, Low Voltage Directive), RoHS compliant

System Integration and Compatibility

The CP1W-32ET1 expansion unit connects directly to compatible Omron CP1 series PLCs (CP1E, CP1L, CP1H models) through the dedicated expansion port, requiring no additional interface hardware or configuration tools. The unit automatically synchronizes with the host PLC upon connection, with all 32 I/O points immediately addressable through the standard PLC programming environment. The expansion maintains full compatibility with Omron's CX-Programmer (version 9.7 or later) and Sysmac Studio (version 1.4 or later) software platforms, allowing seamless integration into existing automation projects. The unit's I/O points follow the host PLC's addressing scheme, with input points mapped to CIO (Core I/O) area and output points to the corresponding output area, ensuring straightforward programming and maintenance.

Reliability and Industrial Performance

Engineered for industrial durability, the Omron CP1W-32ET1 incorporates multiple protective features to ensure long-term reliability in harsh environments. The input circuits include advanced noise filtering (1ms or less pulse width rejection) and transient voltage protection, while the relay outputs feature arc suppression circuits to minimize contact erosion. The unit's construction utilizes flame-retardant materials (UL94 V-0 equivalent) and features screwless terminal blocks with vibration-resistant clamping mechanisms. The product undergoes rigorous quality testing, including 100% functional testing and sample environmental stress testing, to meet Omron's stringent quality standards. Compliance with international safety standards (CE marked per EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU) ensures safe operation in European markets, while RoHS compliance demonstrates environmental responsibility.

Installation and Maintenance Considerations

The CP1W-32ET1 is designed for straightforward installation in standard industrial control panels. The unit mounts horizontally on 35mm DIN rails (TS35×7.5 or TS35×15) using the integrated snap-on mechanism, requiring no additional mounting hardware. The screwless terminal blocks accept 0.3-2.5mm² (AWG 22-12) wires, with clear channel-by-channel labeling for error-free wiring. For optimal performance, install the unit in a well-ventilated location maintaining at least 10mm clearance on all sides. The product requires no periodic maintenance under normal operating conditions, though periodic visual inspection of connections is recommended in high-vibration environments. The 1-year warranty covers defects in materials and workmanship when used according to Omron's published specifications.