1794-CE1 FLEX I/O Extension Cable 0.3m | Allen-Bradley

Product Overview

The Allen-Bradley 1794-CE1 functions as a high-integrity bus extension link for the FLEX™ I/O system. This 0.3-meter (1-foot) cable bridges the communication gap between adjacent terminal bases or separate rows of I/O modules within a single control cabinet. It extends the backplane power and signal bus, allowing engineers to scale their I/O density without adding extra communication adapters. We supply this unit as 100% Brand New and Factory Original, ensuring maximum signal fidelity for your automation rack.

Technical Specifications

Engineering Advantages

• Optimized Cabinet Layout: The 1794-CE1 solves the challenge of limited vertical space. By utilizing this extender, you can split a single I/O bank into two separate rows on the DIN rail. This flexibility allows for better thermal management and cleaner wire duct routing in compact enclosures.

• Marine-Grade Durability: This cable carries multiple maritime certifications (DNV, GL, LR). The robust shielding and connector design withstand the constant vibration and humid atmospheres typical of shipboard engine rooms and offshore platforms.

• Zero-Latency Bus Extension: The 1794-CE1 maintains the electrical characteristics of the FLEX I/O backplane. It ensures the CPU scans remote modules with the same timing accuracy as locally mounted units, preventing "I/O Not Responding" errors caused by signal degradation.

• Rapid Installation: The plug-and-play connectors eliminate the need for manual point-to-point wiring of the system bus. Secure locking mechanisms prevent accidental disconnection during cabinet transport or high-vibration operation.

FAQs

• Can I daisy-chain multiple 1794-CE1 cables to reach longer distances?

  Rockwell Automation strictly limits the total length of the FLEX I/O bus extension. While you can use the cable to move to a second row, exceeding the maximum total bus length (typically 0.9m depending on the configuration) will cause voltage drops and communication failures. For longer distances, use a separate communication adapter (e.g., 1794-AENT).

• Does the 1794-CE1 require separate power wiring?

  No. The 1794-CE1 carries both the communication signals and the backplane power from the adapter to the extended terminal bases. However, you must still provide local 24V DC field power to the terminal bases for your I/O devices as required.

• How do I secure the cable to prevent stress on the connectors?

  The cable remains relatively stiff to maintain shielding integrity. We recommend mounting your DIN rails with sufficient clearance to allow for the cable's natural bend radius. Avoid sharp 90-degree bends, which can fatigue the internal conductors over time.

• Is this a new or used surplus item?

  This is a 100% Brand New product in its original Allen-Bradley factory packaging. We do not supply refurbished or "New-Old-Stock" with compromised insulation. You receive a factory-sealed component ready for immediate commissioning.