Allen-Bradley 1794-TB32 Flex I/O Terminal Base Unit

Allen-Bradley 1794-TB32 FLEX I/O Terminal Base Unit

The Allen-Bradley 1794-TB32 delivers a specialized terminal base solution for high-density I/O applications. This unit efficiently organizes forty-eight terminals across three functional groups. Rockwell Automation engineered this base for systems requiring compact wiring with reliable 24-volt operation.

Electrical Performance

• Stable backplane current of 640 mA at 5VDC for module operation
• Reliable I/O terminal current rating of 2 Amperes per point
• Standard 24V AC/DC voltage rating for control applications
• Wide maximum supply voltage up to 31.2V AC/DC at 50/60 Hz
• Safe isolation voltage of 50V continuous (tested at 2121V DC)
• Proper terminal torque of 0.56–0.79 Nm ensures secure connections

Physical Design & Mounting

• Compact 94 x 94 x 69 mm dimensions (3.7 x 3.7 x 2.7 inches)
• Flexible DIN rail or panel mounting options available
• Robust construction withstands industrial vibration and shock
• The 1794-TB32 maintains precise module alignment
• Space-efficient design maximizes panel layout flexibility

Environmental Durability

• Extended operating temperature from -20°C to 70°C (-4°F to 158°F)
• Broad storage temperature range from -40°C to 85°C
• High humidity tolerance of 5-95% non-condensing
• Rugged 30G operational shock resistance
• Strong 5G vibration immunity at 10-500 Hz
• Designed for harsh industrial environments and continuous operation

Frequently Asked Questions

• How many I/O points does this base support? The 1794-TB32 provides thirty-two I/O terminals plus sixteen power terminals.
• What is the current rating per terminal? I/O terminals handle up to 2 Amperes maximum current.
• What temperature range can it operate in? This base functions from -20°C to 70°C for harsh environments.
• What mounting options are available? You can mount it on DIN rails or directly to panels for flexibility.