The Allen Bradley 1794-IB16 is a FLEX I/O 24V DC digital input module designed to provide 16 sinking input channels for industrial automation systems. It is used to interface field devices such as proximity sensors, push buttons, limit switches, and contact outputs into PLC-based control architectures through FLEX I/O adapters.
Engineered for distributed I/O applications, the 1794-IB16 offers compact design, stable signal processing, and seamless integration with multiple communication networks including EtherNet/IP, ControlNet, DeviceNet, and Remote I/O systems.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model Number | 1794-IB16 |
| Product Family | FLEX I/O |
| Module Type | Digital Input Module |
| Input Channels | 16 points |
| Input Type | Sinking (NPN) |
| Nominal Input Voltage | 24V DC |
| Input Voltage Range | 10–31.2V DC |
| ON-State Voltage | 10–31.2V DC (typical logic ON) |
| OFF-State Voltage | ≤ 5V DC |
| Input Current | ~8 mA typical, up to ~12 mA per point |
| Input Impedance | ~4.6 kΩ |
| Backplane Power | 5V DC via FLEX I/O system |
| FlexBus Current | ~30 mA |
| Power Dissipation | ~5–6 W |
| Isolation Voltage | ~50V continuous (field-to-system) |
| Diagnostics | 16 channel LED indicators + module status LED |
| Mounting Type | DIN rail via FLEX I/O terminal base |
| Compatible Terminal Bases | 1794-TB2 / TB3 / TB3S / TB3K series |
| Operating Temperature | 0°C to 55°C |
| Protection Class | IP20 |
Physical Dimensions & Weight (L × W × H Combined)
| Parameter | Specification |
|---|---|
| Dimensions (L × W × H) | 94 × 94 × 69 mm |
| Weight | Approx. 0.10 kg |
Recommended Related Models
The 1794-IB16 is commonly deployed alongside other FLEX I/O modules in modular control systems requiring mixed signal configurations.
| Related Model | Description |
|---|---|
| 1794-OB16 | 16-point DC output module |
| 1794-IA16 | 120V AC input module |
| 1794-IA8 | 8-point AC input module |
| 1794-IE8 | Analog input module |
| 1794-OE4 | Analog output module |
| 1794-IB10XOB6 | Combination I/O module |
| 1794-TB3 | Terminal base unit |
| 1794-AENT | EtherNet/IP adapter |
| 1794-AENTR | Redundant EtherNet/IP adapter |
| 1794-ACN15 | ControlNet adapter |
Popular Allen Bradley Automation Products
Allen Bradley FLEX I/O systems are widely adopted in industrial automation for scalable distributed control and long-term reliability.
| Popular Model | Product Category |
|---|---|
| 1756-L85E | ControlLogix Controller |
| 1769-L36ERM | CompactLogix Controller |
| 5069-IF8 | Analog I/O Module |
| 2711P-T12C4D8 | PanelView HMI |
| 20G11NC072AA0NNNNN | PowerFlex 755 Drive |
| 1734-AENTR | POINT I/O Adapter |
| 1606-XLS240E | Industrial Power Supply |
| 1756-EN2TR | Ethernet/IP Communication Module |
| 1794-IE8 | FLEX I/O Analog Module |
| 25B-D013N114 | PowerFlex 525 Drive |
