The Allen-Bradley 1794-IB16D is a high-performance FLEX I/O discrete input module engineered for reliable 24V DC signal acquisition in demanding industrial control environments. This 16-point module provides sinking or sourcing input compatibility, making it ideal for monitoring proximity sensors, limit switches, pushbuttons, and other digital field devices. As part of the modular FLEX I/O family, the 1794-IB16D offers seamless integration with Rockwell Automation’s Logix platforms via backplane communication, reducing wiring complexity and enabling flexible system expansion. Each input channel features built-in filtering and transient protection to ensure robust operation in electrically noisy plant floors. With its compact footprint, the 1794-IB16D simplifies cabinet layout while maintaining high-density I/O capacity for distributed control architectures.
| Parameter |
Specification |
| Product Type |
Discrete Input Module (FLEX I/O) |
| Model Number |
1794-IB16D |
| Number of Inputs |
16 (sinking or sourcing) |
| Input Voltage Rating |
24V DC (nominal), 10–30V DC operating range |
| Input Current per Point |
8 mA typical at 24V DC |
| Off-state Voltage |
Maximum 5V DC |
| Off-state Current |
Maximum 1.5 mA |
| Input Delay (Off to On) |
1 ms typical (filtered) |
| Input Delay (On to Off) |
1 ms typical (filtered) |
| Isolation Voltage |
1500V AC between field and system (1 minute) |
| Power Supply Requirement |
5V DC from backplane (via 1794-TB series terminal base) |
| Power Dissipation |
2.5 W maximum |
| Thermal Dissipation |
8.5 BTU/hr maximum |
| Operating Temperature |
0°C to +60°C (32°F to 140°F) |
| Storage Temperature |
-40°C to +85°C (-40°F to 185°F) |
| Relative Humidity |
5% to 95% (non-condensing) |
| Vibration Resistance |
5 g Standard Models 10–500 Hz per IEC 60068-2-6 |
| Shock Resistance |
30 g per IEC 60068-2-27 |
| LED Indicators |
One green LED per input point for status |
| Module Dimensions (H x W x D) |
Approximately 87 mm x 25 mm x 100 mm (3.43 in x 0.98 in x 3.94 in) |
| Weight |
Approximately 0.12 kg (0.26 lb) |
| Compatible Terminal Bases |
1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB4, 1794-TB4S |
| Certifications |
UL, CSA, CE, RoHS compliant |
| Wiring Style |
Removable screw terminal (via terminal base) |
| Field Side Connection |
3-wire (signal, common, shield) per group |
| Module Type |
Standard FLEX I/O module (non-isolated per point, group isolated) |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22