Features:
- Terminal Base Unit for Flex I/O Series Distributed I/O System
- Combines Flexible Wiring Capabilities with Secure Module Mounting
- Operates in Conjunction with 1794 Series I/O Modules and Flex I/O Adapters
The Allen-Bradley 1794-TB3G serves as the terminal base unit in a Flex I/O system, providing reliable electrical connections between field devices and I/O modules. It continuously accommodates input voltage ratings of 31.2 VAC/DC and supports current handling up to 10 Amps maximum, distributing power through screw terminals to support steady state operation of connected modules and devices. Consistent performance is standard with the 1794-TB3G, as the unit maintains stable connections across a broad operating temperature range from -20°C to 70°C. The 1794-TB3G has made improvements in wiring flexibility over previous terminal base designs by supporting wire sizes ranging from 24 AWG to 16 AWG within the Flex I/O platform.
The 1794-TB3G provides essential connectivity functions common to the entire I/O module, and is a critical component of the signal path, directly affecting the proper, normal operation of the overall control system. One 1794-TB3G terminal base is required per I/O module depending on the specific module type being installed. The 1794-TB3G occupies the base position beneath the I/O module and is always secured with a recommended terminal screw torque between 0.56 and 0.79 Nm for optimal electrical contact.
For High Vibration Environment applications, the 1794-TB3G withstands mechanical stress up to 5 g across a frequency range from 10 to 500 Hz. In addition to standard wiring termination, the robust construction also performs reliably under demanding conditions. The 1794-TB3G vibration resistance ensures continuous operation using the internal terminal design specified in the base unit specifications. Using this method, the terminal base system continually maintains signal integrity in dynamic industrial settings. If the system experiences significant mechanical disturbance or environmental stress, the 1794-TB3G will preserve electrical continuity and ensure stable communication between field devices and the control system.
The 1794-TB3G Allen-Bradley Flex I/O Terminal Base Unit may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1794-TB3G Flex I/O Terminal Base Unit Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1794-TB3G Flex I/O Terminal Base Unit Specs
General
- Manufacturer Allen-Bradley
- Model 1794-TB3G
- Condition New Original ready stock
- Product Family 1794-TB3,1794-TB3K,1794-TB32
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- In-Cabinet Distributed I/O: Designed for mounting on a 35mm DIN rail or panel within an industrial enclosure to save space compared to rack-based systems.
- 3-Wire Device Termination: Specifically built to terminate field wiring for 3-wire input or output devices.
- High-Grounding Requirements: Ideal for applications requiring extensive grounding, as it provides 10 chassis ground terminals for modules like RTDs or analog modules.
- Modular Expansion: Allows users to add or replace I/O modules independently to meet changing application needs without re-wiring the entire system.
- Module Compatibility: Directly houses and connects various FLEX I/O modules, including digital, analog, and specialty types.
- Network Interface: Connects to scanners via a FLEX I/O communication adapter (sold separately), enabling communication over: EtherNet/IP ControlNet and DeviceNet PROFIBUS DP and Remote I/O.
- Operating Temperature: -20°C to 70°C (-4°F to 158°F).
- Storage Temperature: -40°C to 85°C (-40°F to 185°F).
- Humidity: 5% to 95% non-condensing relative humidity.
- Vibration & Shock: Rated for 5g vibration at 10–500 Hz and 30g operational shock.
- Hazardous Ratings: UL Listed for Class I, Division 2, Groups A, B, C, and D.
- Protection Class: IP20 (Open-style equipment) requiring an external enclosure.