The Allen-Bradley 1794-IB16 module delivers sixteen discrete sinking input channels. This unit operates at a nominal voltage of 24VDC. Engineers use this Compact Flex I/O module for distributed control architectures. The module reduces long cable runs significantly. You can place it near your sensors and switches. This placement cuts wiring costs and simplifies maintenance tasks.
Product Procurement & Buyer Guide
The 1794-IB16 provides a high-density 16-channel input solution. You must pair this module with a compatible terminal base unit. Choose from these bases: 1794-TB3, 1794-TB3S, 1794-TB3K, or 1794-TB3SK. You can also use the 1794-TBKD or 1794-TB37DS bases. A communication adapter is required for data transfer. Select an adapter for your specific network protocol. Options include the 1794-AENT for EtherNet/IP. Use the 1794-ADN for DeviceNet networks. The 1794-ACN works for ControlNet systems. The module powers from the Flexbus with a draw of 30 mA at 5V DC.
This module solves key pain points for procurement managers. The sinking input design matches many standard industrial sensors. The ON-state voltage range spans 10 to 31.2 VDC. This wide range ensures compatibility with various 24V systems. The module powers sensors with an ON-state current from 2.0mA to 12.0mA. Each channel offers a nominal input impedance of 4.6 kΩ. The module handles a maximum power dissipation of 6.1W at 31.2V DC. The 1794-IB16 reduces total installation costs by enabling remote I/O placement. You save money on long cable bundles and heavy conduit runs.
Application engineers benefit from the robust design. The module operates in temperatures from 0 to 55 Celsius. It withstands storage temperatures from -40 to 85 Celsius. The unit survives vibration up to 5g at 10 to 500 Hz. It handles operating shock up to 30 g. The 1794-IB16 has 16 yellow status LEDs. Each LED indicates the signal state for its corresponding channel. This feature allows fast troubleshooting. The module supports DIN rail mounting for quick panel integration. It also supports direct panel mounting for flexible installation. The lightweight design weighs only 0.19 lbs.
Expert Technical Evaluation & Performance Review
A strict engineering review reveals strong performance characteristics. The 1794-IB16 module processes discrete signals with excellent reliability. The off-state voltage maximum is 5V DC. This ensures clear signal distinction between active and inactive states. The off-state current maximum is only 1.5mA. This low leakage prevents false triggering of downstream logic. The module requires a minimum ON-state voltage of 10V DC. This threshold guarantees clean signal detection in noisy industrial environments. The maximum ON-state current of 12.0mA handles standard sensor outputs without stress.
The module draws only 30 mA from the 5V DC Flexbus. This low current consumption minimizes load on the power supply. The resulting power dissipation of 6.1W at maximum voltage is manageable. The thermal dissipation reaches 11.9 BTU/hr under peak conditions. This heat level is acceptable for enclosed cabinets with basic airflow. The module supports both standard and extreme environment variants. The XT version operates reliably in harsh conditions. The D version provides enhanced diagnostic capabilities for predictive maintenance.
Signal integrity is a core strength of this input module. The 4.6 kΩ input impedance allows the module to sink current effectively. It works with a wide range of 24VDC sensors and switches. The sinking configuration is standard for North American control panels. The module maintains reliable signal detection at 0 to 55 Celsius. The noncondensing relative humidity range of 5 to 95% covers most factory floor conditions. The 1794-IB16 provides a cost-effective solution for high-channel-count remote I/O racks.
Logistics & Standard Packaging Details
