Flex I/O Terminal Base Unit Allen-Bradley 1794-TB3G

Product Overview

The Allen-Bradley 1794-TB3G is a Flex I/O terminal base unit. It hosts various Flex I/O modules. This unit provides 36 terminal points for wiring. It includes 2 common terminals and 2 positive voltage terminals. The unit also has 10 chassis ground terminals. It handles up to 10A and 31.2V DC or AC. The 1794-TB3G works with both panel and DIN rail mounting. It ensures reliable I/O connections in industrial environments.

Application Scenarios

This terminal base unit suits factory automation systems. Use it in process control, packaging, and material handling. It connects field devices like sensors and actuators to the control system. The unit operates in temperatures from -20 to 70 °C. It withstands 30G shock and 5G vibration. Applications include assembly lines, conveyor systems, and machine tools. The 1794-TB3G fits harsh industrial settings.

Technical Specifications

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Part Number: 1794-TB3G
• Product Type: Flex I/O Terminal Base Unit
• Terminal Screw Torque: 0.56-0.79 Nm
• Supply Voltage Range: max 31.2V DC/AC, 50/60Hz, 10A
• Isolation Voltage: 50V Continuous max
• Voltage Rating: 24V DC/AC
• Wire Size: 0.21-1.3 mm² (24-16 AWG)
• Dimensions: 94x94x69 mm
• Operating Temperature: -20 to 70 °C
• Storage Temperature: -40 to 85 °C
• Humidity: 5-95% non-condensing
• FLEXBUS Current: 640mA at 5V DC
• I/O Terminal Current: 2A max
• Voltage/Communication Terminal Rating: 125V DC/AC, 10A at 50-60 Hz

Installation & Maintenance Guide

Mount the unit on a DIN rail or panel. Use the provided screw clamps for wiring. Tighten terminals to 0.56-0.79 Nm torque. Use copper wire rated at 75 °C with 1.2 mm insulation. Ensure correct keyswitch position for the module. The unit requires no special maintenance. Regular inspection of connections is recommended. For shipping, use FedEx, UPS, or DHL.

Packing List

• 1 x 1794-TB3G Flex I/O Terminal Base Unit
• Mounting hardware (if applicable)
• User manual (online or printed)