
Allen-Bradley 1794-IV16 Flex I/O 16-Point Sourcing Input Module
The 1794-IV16 input module from Allen-Bradley provides precise signal acquisition for demanding industrial environments. This Flex I/O component offers sixteen nonisolated sourcing inputs. It operates reliably across a wide voltage range. Engineers rely on this module for accurate monitoring tasks. The 1794-IV16 delivers stable performance in critical control systems. It is a core building block for distributed automation architectures.
Product Procurement & Buyer Guide
Understanding the 1794-IV16 Voltage Specifications
This module operates with a minimum on-state voltage of 10V DC. Its nominal operating voltage is 24V DC. The maximum on-state voltage reaches 31.2V DC. This flexibility supports various sensor types. Procurement managers can standardize on this single module. It adapts to different power supply conditions easily. This reduces inventory complexity across multiple facilities.
Current Handling Capabilities for Engineers
The module handles a minimum on-state current of 2.0 mA. Its nominal on-state current is 8.0 mA at 24V DC. The maximum on-state current reaches 11.0 mA. These specifications ensure reliable signal detection. Engineers can connect a wide variety of sensors. The module maintains consistent performance under load. This prevents nuisance fault conditions in production.

Off-State Reliability and Signal Integrity
The maximum off-state voltage is 5V DC. The minimum off-state current is 1.5 mA. These parameters guarantee clear signal distinction. The module prevents false triggering from electrical noise. This ensures predictable machine behavior at all times. Engineers achieve higher system reliability with these specifications. It minimizes unexpected downtime in critical processes.
Input Impedance and Power Dissipation
The maximum input impedance is 4.7 kΩ. This optimizes signal processing for connected field devices. The module dissipates a maximum power of 5.7 W at 31.2V DC. This thermal performance maintains safe operating temperatures. Engineers can plan cabinet cooling requirements accurately. This ensures long-term reliability in enclosed panels.
Compatibility with the 1794-TB3 Terminal Base
The 1794-IV16 mounts directly onto the 1794-TB3 terminal base unit. This base provides three screw clamp terminal strips. It offers 52 terminals for secure field wiring. The top strip handles I/O connections for signals. The middle and bottom strips manage common and supply voltages. This system supports daisy-chaining for efficient power distribution.

Installation and Mechanical Mounting
Mount the 1794-TB3 terminal base onto a standard DIN rail. Hook the base over the top of the rail first. Push the base until it locks into position. The FlexBus connector engages with the adjacent module. Slide the 1794-IV16 module into the terminal base. This process requires no special tools for installation.
Wiring Guidelines for the 1794-IV16
Use conductors from 22 gauge (0.35 mm²) to 12 gauge (4 mm²). The maximum insulation thickness is 3/64 inch (1.2 mm). Connect field devices to the top I/O terminals. Terminals 0 through 15 handle input signal connections. Terminals 16 through 33 connect to the voltage common. Terminals 34 through 51 connect to the voltage supply.
Performance in Industrial Environments

This module provides reliable operation in harsh factory conditions. It delivers precise monitoring for manufacturing processes. The design focuses on signal accuracy and repeatability. Engineers trust this module for critical control loops. It integrates seamlessly into existing Flex I/O networks. The module supports a wide variety of industrial sensors.
Technical Evaluation for System Designers
The 1794-IV16 offers excellent signal discrimination capabilities. Its voltage thresholds provide clear on and off states. The input impedance ensures minimal signal loading effects. This module performs well in electrically noisy environments. It maintains data integrity for process control systems. System designers achieve high accuracy with this component.
Logistics & Standard Packaging Details
- One (1) Allen-Bradley 1794-IV16 Input Module
- Product documentation and installation guide
- Anti-static packaging for safe transit
- Express delivery shipping is available via FedEx, UPS, and DHL