Allen-Bradley | 1794-IB16 | FLEX I/O – 1794 Series

Product Description: Allen-Bradley 1794-IB16

The Allen-Bradley 1794-IB16 is a 16-channel discrete input module designed for use within the FLEX I/O platform. It provides high-density 24V DC digital input capability in a compact, modular design ideal for distributed control systems. The module is suitable for detecting the ON/OFF status of field devices such as switches, sensors, or other digital sources in industrial automation environments.

Product Type

• 16-Channel Digital DC Input Module
• Series: FLEX I/O – 1794 Series
• Input Type: Digital (Discrete) DC Input – Sinking

Key Features

• 16 input channels for high-density input in a compact footprint
• 24V DC sinking input type (requires sourcing field devices)
• Compact FLEX I/O form factor allows modular and space-efficient system design
• Backplane communication through adapter modules (e.g., EtherNet/IP, ControlNet, etc.)
• LED indicators for channel status and diagnostics
• Terminal base (e.g., 1794-TB3, 1794-TB3S, or 1794-TBN) required for field wiring connection

Technical Specifications

• Input Voltage Range: 10–31.2 VDC (nominal 24V DC)
• Input Current (per channel): Approx. 6 mA at 24V DC
• Number of Inputs: 16
• Input Type: Sinking (uses sourcing devices)
• On-State Voltage: ≥10V DC
• Off-State Voltage: ≤5V DC
• On-State Current (min): 2.0 mA
• Off-State Current (max): 1.5 mA
• Isolation Voltage: 50V continuous (field to backplane, tested at 850V DC for 1s)
• Operating Temperature: 0 to 55 °C (32 to 131 °F)
• Mounting: Panel or DIN rail via compatible terminal base
• Dimensions (HxWxD): Approx. 94 x 94 x 69 mm (with base)

Application Areas

• Packaging and conveyor systems
• Material handling equipment
• Process control input monitoring
• Machine status monitoring
• Distributed I/O for OEM applications

Advantages

• High input density saves panel space
• Modular design supports flexible and scalable installations
• Seamless integration with Allen-Bradley PLCs over FLEX I/O network adapters
• Reliable input detection for industrial-grade digital signals