Product Overview

The Allen-Bradley 1769-CRR1 provides a high-speed communication link for expanding CompactLogix and MicroLogix 1500 I/O banks. This 0.3-meter (approximately 1 foot) cable connects the right side of one I/O bank to the right side of a subsequent bank. By extending the 1769 communication bus, the 1769-CRR1 allows for complex, multi-rack system architectures without compromising signal integrity. We provide this unit in 100% Brand New original condition, ensuring a secure, low-impedance connection for your industrial control network.

Technical Specifications

The 1769-CRR1 utilizes a rugged, shielded design to maintain high-speed data transmission across split-rack configurations.

Engineering Advantages

The 1769-CRR1 solves critical layout challenges in high-density control cabinets where a single, continuous rail of I/O modules is physically impossible.

• Split-Bank Versatility: This cable allows engineers to split I/O modules into two separate rows or "banks." This proves essential when cabinet depth or width constraints prevent a long, single-rail installation.

• Maintained Bus Performance: The 1769-CRR1 preserves the high-speed backplane throughput of the CompactLogix system. It ensures that data from distal I/O banks reaches the controller with the same deterministic timing as local modules.

• Right-Bank Optimization: The "Right-to-Right" configuration specifically facilitates vertical stacking. You can connect the end of a top row to the beginning of a bottom row, creating a compact "S" pattern for your I/O layout.

• Industrial Shielding: The cable assembly features heavy-duty shielding to protect the communication bus from electromagnetic interference (EMI) typically found near variable frequency drives (VFDs) and high-power contactors.

• Locking Connectors: Secure, heavy-duty connectors prevent accidental disconnection due to machine vibration, ensuring continuous uptime for process-critical applications.

FAQs

• Does the 1769-CRR1 require a separate power supply for the second bank?

  Yes. When you use an expansion cable to create a new bank, you must install an additional 1769-PA2, 1769-PB2, or 1769-PA4 power supply to support the modules on that expanded bank.

• How many expansion cables can I use in a single CompactLogix system?

  The total number of expansion cables depends on the specific controller's I/O bank limit. Most CompactLogix controllers support up to two expansion cables (three banks total). Always verify your controller's "distance rating" and bank capacity in the technical manual.

• What is the difference between a 1769-CRR1 and a 1769-CRL1?

  The 1769-CRR1 connects a Right Bank to a Right Bank (typically used for stacking). The 1769-CRL1 connects a Right Bank to a Left Bank. Ensure you select the correct cable based on your physical rack orientation and port locations.

• Is the cable flexible enough for tight cabinet turns?

  The 0.3m length provides sufficient slack for standard DIN rail spacing (row-to-row). While the cable is ruggedized, you should avoid exceeding the minimum bend radius to ensure long-term bus reliability.