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Allen-Bradley 1794-IB16 FLEX I/O Digital Input Module

1. Product Description

The 1794-IB16 is a 16-channel digital DC input module from Allen-Bradley’s FLEX I/O series, designed for industrial automation applications. It provides sinking-type inputs (24V DC nominal) and supports hot-swapping (RIUP – Removal and Insertion Under Power), allowing module replacement without system shutdown .

2. Key Features

High-Density Inputs – 16 sinking-type DC inputs, optimizing control cabinet space.
Wide Voltage Range – Supports 10–31.2V DC input signals, compatible with various industrial sensors .
Hot-Swappable (RIUP) – Can be installed or removed without powering down the system .
LED Status Indicators – Each channel has a yellow LED for real-time input status monitoring .
Flexible Communication – Works with ControlNet, DeviceNet, EtherNet/IP, and Remote I/O via compatible adapters (e.g., 1794-ADN, 1794-AENT) .
Industrial Durability – Operates in 0°C to 55°C (32°F to 131°F) environments with 5–95% non-condensing humidity .

3. Technical Specifications

Parameter	Specification
Input Type	16 sinking DC inputs
Input Voltage Range	10–31.2V DC (24V DC nominal)
On-State Current	2–12 mA
Off-State Voltage	≤5V DC
Off-State Current	≤1.5 mA
Input Impedance	4.6 kΩ
Isolation Voltage	50V (channel-to-backplane)
Power Consumption	6.1W @ 31.2V DC
Mounting	DIN rail (compatible with 1794-TB3/TB3S terminal bases)
Certifications	CE, UL, CSA, GOST, c-Tick

4. Applications

Manufacturing Automation – Sensor interfacing in assembly lines .
Material Handling – Conveyor belt monitoring and safety interlocks .
Process Control – Valve and pump status detection in water treatment plants .
Packaging Machinery – High-speed input sensing for labeling systems .

5. Installation & Precautions

Terminal Base Required – Must be installed on compatible bases (1794-TB3, 1794-TB3S) .
Wiring Compliance – Use shielded cables in high-noise environments .
Environmental Limits – Avoid condensation or extreme temperatures beyond specifications .
Communication Setup – Ensure proper adapter configuration (e.g., DeviceNet addressing).