Allen-Bradley 1492-CABLE Series Pre-Wired Interface Cables 1492-CABLE025TBCH

Name: Allen-Bradley 1492-CABLE Series Pre-Wired Interface Cables 1492-CABLE025TBCH
Brand: Allen-Bradley

Model: 1492-CABLE025TBCH

Brand Allen-Bradley

Series 1492-CABLE025TBCH

Model 1492-CABLE025TBCH

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Technical Dossier

Product Details And Specifications

Allen-Bradley 1492-CABLE Series Technical Notes

The Allen-Bradley 1492-CABLE series, manufactured by Rockwell Automation, is a standardized range of pre-wired interface cables designed to terminate field wiring directly to Allen-Bradley 1746 SLC 500, 1756 ControlLogix, and 1769 CompactLogix digital I/O modules. These cables eliminate the need for field-side terminal block wiring, reducing installation time and wiring errors in high-density I/O environments. The series is deployed globally across chemical processing plants, petroleum refineries, nuclear power generation facilities, automotive assembly lines, and water treatment infrastructure — anywhere that structured, auditable I/O wiring is a plant engineering requirement. The 1492-CABLE range interfaces directly with Allen-Bradley 1492-IFM (Interface Modules) and 1492-AIFM (Analog Interface Modules), forming a complete field-to-controller wiring system that is documented in Rockwell Automation Wiring System catalog literature.

The Evolution of 1492-CABLE Architecture

The 1492-CABLE series was introduced alongside the expansion of the 1746 SLC 500 platform in the early 1990s, when Rockwell Automation standardized the IFM (Interface Module) wiring concept to address field wiring density and reliability requirements in process industries. Early variants used 0.25 m and 0.5 m cable lengths with standard D-shell or ribbon connectors terminating to 1492-IFM modules mounted on DIN rail adjacent to the I/O rack.

As the 1756 ControlLogix platform became the dominant architecture for large-scale DCS and hybrid control systems through the 2000s, the 1492-CABLE series expanded to support higher-density 32-point and 64-point digital I/O modules, requiring multi-conductor shielded cable assemblies with keyed connectors to prevent mis-mating. The introduction of the 1769 CompactLogix platform added a third connector family to the series, with shorter cable lengths (0.25 m, 0.5 m, 1.0 m) suited to compact panel installations.

1492-CABLE Full Catalog & Functionalities (SKU List)

The following SKUs represent the primary catalog of the Allen-Bradley 1492-CABLE series, organized by target platform and cable length. Each entry reflects a verified, commercially available or historically stocked part number.

1756 ControlLogix Platform — Digital I/O Interface Cables

1492-CABLE025TBCH: 0.25 m pre-wired cable, 1756 digital I/O to 1492-IFM, standard conductor, right-angle connector
1492-CABLE050TBCH: 0.5 m pre-wired cable, 1756 digital I/O to 1492-IFM, standard conductor, right-angle connector
1492-CABLE100TBCH: 1.0 m pre-wired cable, 1756 digital I/O to 1492-IFM, standard conductor, right-angle connector
1492-CABLE150TBCH: 1.5 m pre-wired cable, 1756 digital I/O to 1492-IFM, extended reach panel wiring
1492-CABLE200TBCH: 2.0 m pre-wired cable, 1756 digital I/O to 1492-IFM, long-run panel installation
1492-CABLE025TANH: 0.25 m cable, 1756 analog I/O to 1492-AIFM, shielded, straight connector
1492-CABLE050TANH: 0.5 m cable, 1756 analog I/O to 1492-AIFM, shielded, straight connector
1492-CABLE100TANH: 1.0 m cable, 1756 analog I/O to 1492-AIFM, shielded, straight connector

1746 SLC 500 Platform — Digital I/O Interface Cables

1492-CABLE025D: 0.25 m cable, 1746 SLC 500 digital I/O to 1492-IFM, D-shell termination
1492-CABLE050D: 0.5 m cable, 1746 SLC 500 digital I/O to 1492-IFM, D-shell termination
1492-CABLE100D: 1.0 m cable, 1746 SLC 500 digital I/O to 1492-IFM, D-shell termination
1492-CABLE025Z: 0.25 m cable, 1746 SLC 500 32-point I/O module, dual-connector assembly
1492-CABLE050Z: 0.5 m cable, 1746 SLC 500 32-point I/O module, dual-connector assembly

1769 CompactLogix Platform — Digital I/O Interface Cables

1492-CABLE025TBCH-L: 0.25 m cable, 1769 CompactLogix digital I/O to 1492-IFM, compact panel format
1492-CABLE050TBCH-L: 0.5 m cable, 1769 CompactLogix digital I/O to 1492-IFM, compact panel format
1492-CABLE100TBCH-L: 1.0 m cable, 1769 CompactLogix digital I/O to 1492-IFM, compact panel format

Quality Control for the 1492-CABLE Range

Each 1492-CABLE assembly processed by DriveKNMS undergoes a structured inspection and functional verification protocol prior to dispatch:

Connector shell inspection: keying, locking tab integrity, and pin seating verified against Rockwell Automation connector specification drawings
Conductor continuity test: each conductor verified end-to-end using calibrated continuity test equipment; open circuits and cross-wiring faults are rejection criteria
Shield continuity verification: for shielded analog variants (TANH suffix), shield drain wire continuity and isolation from signal conductors is confirmed
Connector mating test: cables are mated to reference 1492-IFM or 1492-AIFM modules to verify mechanical fit and locking engagement
Visual inspection: cable jacket, strain relief, and labeling reviewed for damage, re-termination evidence, or non-OEM modification

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