| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Input Module |
| Product Line | Flex I/O 1794 |
| Part Number | 1794-IE12 |
| Weight | 0.38 lbs (0.17 kg) |
| FLEXBus Current | 80 mA |
| Nominal Power Supply Rating | 24V DC |
| Nominal Power Supply Voltage Range | 10.5-31.2V DC |
| Max. Continuous Isolation Voltage | 50V |
| Max. Power Dissipation | 1.2 Watts at 31.2V DC |
| Thermal Dissipation | 4.2 BTU per Hour at 31.2V DC |
| Wire Type | Shielded Wire |
| Wiring Category | Category 2 on both the signal and power ports |
| Enclosure Type | None (Open-Style) |
| Keyswitch Position | Position 3 |
| Operating Temperature | -4 to 140 degrees Fahrenheit |
| Storage Temperature | -40 to 185 degrees Fahrenheit |
| Max. Operating Shock | 30 G |
Overview
The Allen-Bradley 1794-IE12 is a critical component for distributed control systems, belonging to the robust FLEX I/O family by Rockwell Automation. This module acts as the bridge between your analog field devices and digital controller (PLC). With 12 independent input channels, it offers high channel density, saving valuable panel space while delivering precise monitoring capabilities. Whether you need to monitor pressure, temperature, or flow, the 1794-IE12 provides the reliability and accuracy required for modern industrial automation.
Key Features & Benefits
- High-Density Input: Features 12 independent analog input channels in a single module footprint, significantly reducing the number of modules required for complex process applications.
- Flexible Signal Configuration: Each channel can be individually configured via side-mounted DIP switches for Current (0-20mA, 4-20mA) or Voltage (0-10V, ±10V) inputs, offering unmatched versatility for mixed-signal applications.
- 12-Bit Resolution: Provides high-precision 12-bit analog-to-digital conversion, ensuring accurate reading of sensor data for critical process control loops.
- Channel Isolation: The module features channel-to-channel isolation, preventing electrical noise or faults in one channel from affecting adjacent channels, thereby increasing system stability.
- Diagnostic LEDs: Integrated status LEDs for each channel (Input Active) and module status allow for rapid troubleshooting and verification of input states without external test equipment.
- Rugged Design: Built to withstand harsh industrial environments with a wide operating temperature range and high immunity to electrical noise.
Applications
The Allen-Bradley 1794-IE12 is extensively used in:
- Process Monitoring: Reading pressure, temperature, and flow transmitters via 4-20mA signals.
- Machine Control: Monitoring sensor feedback for position and speed.
- Data Acquisition: Collecting analog data for SCADA systems and historians.
- HVAC Systems: Monitoring duct pressure, temperature, and humidity sensors.
- Water Treatment: Monitoring tank levels, pH, and chemical concentrations.
Important Installation Note:
The 1794-IE12 module requires a compatible Terminal Base Unit (such as the 1794-TB3 or 1794-TB3S) for wiring and power connection. The module plugs directly onto the terminal base. Ensure the terminal base is correctly wired for the specific voltage or current mode selected on the module’s DIP switches.
Why Choose This Module?
Our 1794-IE12 units are sourced from authorized distributors, guaranteeing genuine Allen-Bradley / Rockwell Automation quality. As a mature product, it is widely used in existing plants for replacements and upgrades. We provide fast shipping, technical support, and competitive pricing to keep your production lines running smoothly.
Upgrade your FLEX I/O system today with the Allen-Bradley 1794-IE12.
Technical Documentation (Source: Rockwell Automation)
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