1794-TB32 FLEX I/O Module | Allen-Bradley | 32 Digital Inputs

Overview
The Allen-Bradley 1794-TB32 is a high-capacity FLEX I/O terminal base designed to accommodate 32 current sinking digital input channels. It delivers reliable signal acquisition and system integration for modular control networks. Compatible with various terminal bases, this unit is engineered to ensure precise, isolated communication between field devices and controllers.

Technical Specifications

• Manufacturer: Allen-Bradley

• Model / Part Number: 1794-TB32

• Product Type: FLEX I/O Digital Input Module / Terminal Base

• Number of Inputs: 32, current sinking

• Recommended Terminal Bases: 1794-TB32, 1794-TB32S, 1794-TB62DS, 1794-TB62EXD4X15

• Nominal Input Impedance: 22.2 kΩ

• Isolation Voltage: 50 V continuous, Basic Insulation; type tested at 2121 V DC for 2 s (field side to system)

• Channel Isolation: No isolation between individual channels

• FlexBus Current: 25 mA @ 5 V DC

• Max Power Dissipation: 6.0 W @ 31.2 V DC

• Max Thermal Dissipation: 20.47 BTU/hr @ 31.2 V DC

• Terminal Base Screw Torque: Determined by installed terminal base

• External DC Supply Voltage: 24 V DC nominal

• Indicators: 32 yellow status LEDs for field side monitoring

• Dimensions (L x W x H): 6.9 × 9.4 × 9.4 cm

• Weight: 2 kg

Applications
Suitable for distributed digital input collection in large-scale automation systems, process control, and remote monitoring. Ideal for use with ControlLogix or CompactLogix networks requiring high-channel density and reliable field communication.

FAQ
Q: How many input channels does 1794-TB32 support?
A: This terminal base accommodates 32 current sinking digital inputs.

Q: Can this unit isolate individual channels?
A: No, individual channels are not isolated; isolation is provided between the field and system side.

Q: Which terminal bases are compatible with this module?
A: Compatible with 1794-TB32, 1794-TB32S, 1794-TB62DS, and 1794-TB62EXD4X15.