PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1794-TB2 is a FLEX I/O Terminal Base Unit designed for distributed field wiring. It provides the physical mounting and electrical interface for compatible FLEX I/O processing modules. Cage clamp screw terminals support solid or stranded conductors from 0.21 to 1.3 mm² (24 to 16 AWG). Each terminal manages currents up to 10 A for industrial automation tasks.
This base unit houses 18 common terminals and two voltage terminals supporting 16 I/O connections. It supports nominal supply voltages up to 125 V AC/DC across 50/60 Hz circuits. The hardware provides 125 V continuous isolation to protect field-side signals. Operating ambient temperatures range from -20 to 55 °C under demanding manufacturing plant conditions.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Product Line | Flex I/O 1794 |
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| UPC | 662468112321 |
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| Weight | 0.50 lbs (0.23 kg) |
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| Termination Type | Cage clamp |
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| Wire Size Supported | 0.21 to 1.3 mm² (24 to 16 AWG) |
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| Max Current per Terminal | 10A |
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| Number of Terminals | 18 common and 2 voltage terminals |
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| Isolation Voltage | 125 V continuous |
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| Terminal Screw Torque | 0.56 to 0.79 Nm |
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| Supply Voltage Range | Max 125 V AC/DC |
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| Number of I/O Connections | 16 I/Os |
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| Operating Temperature | -20 to 55 °C |
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| Storage Temperature | -40 to 85 °C |
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| Shock Resistance | 30 g operating / 50 g non-operating |
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| Certifications | Confirm approval markings on the supplied unit |
|---|
TECHNICAL INFORMATION
Features
- Cage clamp screw terminals provide direct field wiring connections.
- Eighteen common terminals and two dedicated voltage terminals support sixteen I/O circuits.
- Rated for continuous isolation voltage up to 125 V.
- Accepts field conductor sizes ranging from 0.21 to 1.3 mm² (24 to 16 AWG).
- Handles up to 10 A continuous current per terminal circuit.
- Specified terminal screw installation torque of 0.56 to 0.79 N·m.
- Confirm the exact unit approval markings and installation requirements before use.
TECHNICAL INFORMATION
Applications
- Industrial distributed I/O panels utilizing Allen-Bradley FLEX I/O architectures.
- Field wiring distribution requiring up to 16 I/O points per station.
- Process control environments operating with 24 V or 120 V field instrumentation.
TECHNICAL INFORMATION
Connections / Interfaces
- Sixteen I/O connection points for discrete or analog field wiring.
- Eighteen common connection terminals for sensor and actuator return circuits.
- Two dedicated voltage supply connection terminals for module power distribution.
- Cage clamp screws tightened to 0.56 to 0.79 N·m torque.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the base onto a standard DIN rail or panel surface.
- Strip field conductors according to standard FLEX I/O cage clamp practices.
- Tighten all terminal screws to the specified torque range between 0.56 and 0.79 N·m.
- Verify supply voltage does not exceed the maximum rating of 125 V AC/DC.
- Ensure enclosure ventilation maintains operating ambient temperatures between -20 and 55 °C.
TECHNICAL INFORMATION
Configuration Guidelines
- Align the corresponding FLEX I/O module with the terminal base unit keys.
- Press the module down firmly into the base until latching mechanisms lock.
- Configure individual I/O channels in the controller engineering software according to module specifications.
TECHNICAL INFORMATION
Compatibility
- Select a compatible FLEX I/O module using its terminal-base requirements and keying instructions.
TECHNICAL INFORMATION
Compliance and Certifications
- UL listed
- CSA certified
- Hazardous-location approval must be verified for the exact unit
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSSelect a compatible FLEX I/O module using its terminal-base requirements and keying instructions.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What wire sizes are supported by the Allen-Bradley 1794-TB2?
The cage clamp terminals accept wire sizes from 0.21 to 1.3 mm² (24 to 16 AWG).
What is the maximum voltage and current rating for each terminal?
Each terminal handles up to 10 A with a maximum operating voltage of 125 V AC/DC.
What is the tightening torque for the 1794-TB2 terminal screws?
Recommended screw tightening torque ranges from 0.56 to 0.79 N·m.
What is the indicative market reference price for the 1794-TB2?
Request a quotation for a New-condition 1794-TB2. The previously observed $19 refurbished listing does not price a new unit. Condition, quantity and availability must be confirmed before ordering.
