Product Overview
The Allen-Bradley 1794-IB16XOB16P is a high-density Flex I/O input/output module from Rockwell Automation. It combines a 16-point 24VDC sinking input and a 16-point 24VDC sourcing output in a single, space-saving unit. As a programmable logic controller (PLC) module, the 1794-IB16XOB16P is designed for reliable signal acquisition and control in industrial automation applications.
With a maximum wattage of 125 W and an IP20 NEMA-rated enclosure, this module suits control panels and DIN-rail mounting. Its open-style design simplifies wiring and maintenance, making it a practical choice for system integrators and maintenance teams.
Technical Specifications
| Specification |
Value |
| Manufacturer |
Allen Bradley |
| Category |
PLCs |
| Product Line |
Flex I/O 1794 |
| Part Number |
1794-IB16XOB16P |
| UPC |
612598279890 |
| Weight |
0.25 lbs (0.11 kg) |
| Class |
Programmable Logic Controller Module |
| Input |
16 Point |
| Output |
16 Point |
| Number of Channels |
32 point |
| Power Supply |
24V DC |
| Mounting |
DIN-rail, Panel |
| NEMA Rating |
IP20 |
| Special Features |
Electronically Protected |
| Type |
24V DC Input Output Module |
| Maximum Wattage |
125 |
Key Features & Benefits
-
16-Point 24VDC Sinking Input: Handles digital signals from sensors, switches, and other field devices.
-
16-Point 24VDC Sourcing Output: Drives actuators, relays, and indicator lamps directly.
-
32 Total Channels: Maximizes I/O density within a compact footprint.
-
Electronically Protected: Safeguards the module against overcurrent conditions, reducing downtime.
-
DIN-Rail or Panel Mounting: Offers flexible installation options for various cabinet layouts.
-
IP20 NEMA Rating: Provides protection against solid objects larger than 12 mm, suitable for indoor control enclosures.
Industry Applications
The 1794-IB16XOB16P excels in discrete manufacturing, material handling, and process control systems. Its mixed input/output configuration makes it ideal for applications requiring both sensor feedback and actuator control, such as:
- Conveyor systems with start/stop controls and status monitoring.
- Packaging machinery that needs precise sequence control.
- Automotive assembly lines where multiple I/O points are consolidated.
By choosing the 1794-IB16XOB16P, you reduce panel space and wiring complexity while maintaining high reliability—a key factor in minimizing production stoppages.
Installation & Setup
Mount the 1794-IB16XOB16P on a standard DIN rail or directly onto a panel using the provided mounting holes. Ensure the ambient temperature stays within the module's operating range (refer to the product manual for exact limits). Connect the 24VDC power supply to the designated terminals, and wire the input and output field devices according to the wiring diagram.
For sinking inputs, connect the common return to the negative side of the power supply. For sourcing outputs, the load connects between the output terminal and ground. Always verify polarity before energizing the module to prevent damage.
Maintenance & Reliability
Routine inspection of the 1794-IB16XOB16P helps ensure long-term performance. Check terminal connections periodically for tightness, especially in high-vibration environments. Keep the module free from dust and debris, as IP20 protection does not seal against fine particles. If the module operates in a humid area, consider adding a conformal coating to the PCB (if allowed by your facility's standards).
Thanks to its electronic protection, the module withstands short-term overloads, reducing the risk of permanent failure. When replacing the module, always power down the system and follow proper ESD precautions.
Compatibility & Integration
The 1794-IB16XOB16P integrates seamlessly into Rockwell Automation's Flex I/O architecture. It connects to a PLC master device via a standard network card, supporting Ethernet LAN communication. The module uses industry-standard Ethernet TCP/IP for data transfer, compatible with Rockwell's ControlLogix, CompactLogix, and other controllers that support Flex I/O adapters.
This module also works with AC500 series PLCs when paired with the appropriate communication interface. Its open communication protocol ensures easy integration into existing control networks.
Selection Guide
Before purchasing the 1794-IB16XOB16P, verify your system's voltage requirements (24VDC) and I/O count. Confirm that your PLC or network adapter supports the Flex I/O series. For large installations, calculate the total current draw to ensure your power supply can handle the combined load.
PLC Source PRO offers genuine Allen-Bradley 1794-IB16XOB16P modules with fast shipping and competitive pricing. Our team can assist you with compatibility questions—contact us before ordering to ensure the right fit for your application.