Allen-Bradley 1794-IB16 Flex I/O DC Digital Input Module

Core Technical Specifications

• Manufacturer: Rockwell Automation / Allen-Bradley
• Model Number: 1794-IB16
• Product Type: Flex I/O DC Digital Input Module
• Input Channels: 16 Sinking DC Inputs
• Nominal Voltage: 24 Volts DC
• Operating Range: 10-31.2V DC
• Mounting Style: DIN Rail or Panel Mount
• Status Indicators: 16 Yellow LED Channels

Electrical Characteristics & Performance

• On-State Voltage Range: 10V DC Minimum to 31.2V DC Maximum
• Recommended Operating Voltage: 19.2-31.2V DC
• On-State Current Range: 2.0 mA to 12.0 mA
• Off-State Current: 1.5 mA Maximum
• Input Impedance: 4.6 kΩ Nominal
• FlexBus Current: 30 mA @ 5V DC

Environmental & Mechanical Ratings

• Operating Temperature: 0°C to 55°C (32°F to 131°F)
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Relative Humidity: 5% to 95% Non-Condensing
• Vibration Resistance: 5G @ 10-500 Hz Frequency
• Shock Tolerance: 30G Operational, 50G Non-Operational
• Thermal Dissipation: 11.9 BTU/hour Maximum

Power & Signal Specifications

• Power Dissipation: 6.1 Watts Maximum @ 31.2V DC
• Input Response Time: 2 Milliseconds Typical
• Signal Filtering: Built-in Noise Suppression
• Wiring Configuration: Sinking Input Design
• Isolation Rating: 500V AC Continuous
• Backplane Power: 5V DC from FlexBus

Installation & Compatibility

• Mount the 1794-IB16 module on standard DIN rail or panel surfaces
• Use compatible terminal bases: 1794-TB3, TB3S, TB3K, TB3SK, TBKD, TB37DS
• Install communication adapters: 1794-ADN, ASB, AENT, APB, ACN for network connectivity
• Recommended wire size: Determined by selected terminal base unit specifications
• Ensure proper grounding and follow electrical safety standards
• Maintain adequate spacing for heat dissipation and maintenance access

System Integration & Networking

• Communication Protocols: DeviceNet, ControlNet, EtherNet/IP, Profibus, Remote I/O
• Distributed Architecture: Install near signal sources to reduce wiring costs
• Module Diagnostics: Individual channel status monitoring via LED indicators
• Flex I/O System: Compatible with all 1794 series adapters and accessories
• Input Grouping: 16 sinking channels with common reference design
• Industrial Networks: Supports major fieldbus and Ethernet protocols

Packaging & Shipping Information

• Your order includes one genuine Allen-Bradley 1794-IB16 input module
• We provide comprehensive installation guides and technical documentation
• We ship internationally via FedEx, UPS, and DHL express delivery services
• You receive complete tracking information and shipment status updates

Frequently Asked Questions (FAQ)

• What does "sinking input" mean for this DC input module?
• Sinking input means the module provides a path to ground for current flow when the input is active.
• What communication adapters work with this input module?
• The module works with 1794-ADN (DeviceNet), ASB (Remote I/O), AENT (EtherNet), APB (Profibus), and ACN (ControlNet) adapters.
• Can this module operate at lower DC voltages than 24V?
• Yes, it operates from 10V DC minimum to 31.2V DC maximum, with optimal performance at 19.2-31.2V DC.
• What are the diagnostic capabilities of this module?
• Sixteen individual yellow LEDs provide real-time status indication for each input channel.
• How does distributed I/O architecture benefit installation?
• Distributed I/O reduces cable runs by placing modules near field devices, lowering installation costs and improving maintenance access.

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