Overview
The Allen-Bradley 1794-TB3 is a FLEX I/O terminal base manufactured by Rockwell Automation for distributed industrial automation. It is a FLEXâ„¢ I/O terminal base designed to serve as a mounting platform and field wiring termination point for modular FLEX I/O input and output modules. A terminal base is used to land field I/O wiring and house a removable I/O module, enabling quick module swaps and repair without breaking field connections.
Key Features
- Open style and DIN mount for flexible panel or rail installation
- Screw clamp (cage-clamp) terminal design for secure, reliable field wiring
- 16 I/O terminals, 18 common terminals, and 18 +voltage terminals for flexible power and signal distribution
- Support of both digital and analog I/O modules, making it versatile for mixed-signal automation
- Same-day domestic and fast international shipping available through authorized distributors
- Removal and Insertion Under Power (RIUP) capability, along with diagnostic tools for quick troubleshooting
Technical Specifications
- I/O Terminals: 16
- Common Terminals: 18
- Voltage Terminals: 18
- Max Output Current (V/COM): 10 Amps
- V/COM Voltage Rating: 125V AC or DC 50/60 Hz
- FLEXBus Voltage: 5V DC
- FLEXBus Current: 640 mA maximum
- Connection Type: Cage-clamp
- Mounting: DIN rail mounting
- Operating Temperature: 0 – 55 degrees C
- Isolation Voltage: 125 Volts continuous
- Wire Torque Spec: 0.56 to 0.79 Nm
- Weight: Approx. 0.5 kg (1.1 lbs)
- Certifications: C-TICK, CE, CSA, CUL, GOST, KC, MARINE, UL
Typical Applications
Designed for use in various industrial applications where modular and flexible input/output needs are required. The FLEX I/O system allows for easy expansion and customization to meet specific application requirements. Common use cases include:
- Automated manufacturing and assembly lines
- Process control and discrete control systems
- Machine monitoring and diagnostics
- Food and beverage processing equipment
- Oil, gas, and pharmaceutical production facilities
- Field I/O consolidation and panel retrofit applications
Compatibility & Replacements
Compatible With
- All FLEX I/O digital and analog input/output modules (4–32 point range)
- FLEX I/O remote adapter modules
- Rockwell Automation CompactLogix, ControlLogix, and Micro800 controllers via FLEX I/O gateways
- EtherNet/IPâ„¢, ControlNetâ„¢, DeviceNetâ„¢, or PROFIBUS DP communication protocols
- RSLogix 5000 / Studio 5000 engineering software
Replaces / Drop-In Replacement For
The 1794-TB3 is a standard terminal base model. Related FLEX I/O terminal base models include 1794-TB3G, 1794-TB3GS, 1794-TB3GSK, 1794-TB3GK, 1794-TB3K, 1794-TB3T, 1794-TB3TK, 1794-TB3S, 1794-TB3SK, 1794-TB3TS, and 1794-TB3TSK. Verify compatibility with your system integrator before ordering, as variant models have different electrical ratings and terminal configurations.
Works With
- RSLogix 5000 and Studio 5000 (Compact and Professional)
- FLEX I/O module firmware and configuration utilities
- EtherNet/IP and ControlNet communication networks
- Rockwell Automation FactoryTalk software suite
- Third-party PROFIBUS DP and DeviceNet adapters
