The1769-CRR1(1769-CRR1) is a high-performance bus expansion cable engineered for the Allen-Bradley CompactLogix and MicroLogix 1500 systems. This specialty cable is designed to facilitate aright-to-rightconnection between two separate I/O banks, allowing for increased system flexibility and expansion beyond a single DIN rail. Measuring 1 foot (305 mm) in length, the1769-CRR1acts as a reliable bridge for communication and backplane power, ensuring that all modules across both banks are recognized and powered by the controller.
Technical Specifications
Model / Part Number:1769-CRR1
Manufacturer:Rockwell Automation / Allen-Bradley
Module Type:Bank-to-Bank Expansion Cable
Connection Orientation:Right-to-Right
Cable Length:1 ft (305 mm)
Backplane Current Capacity:1.4 Amps at 24V DC
Power Consumption:33.6 Watts
Power Dissipation:7.5 Watts
Isolation Voltage:30 Volts (continuous)
Operating Temperature:0°C to 60°C (32°F to 140°F)
Weight:0.3 kg (0.66 lbs)
Included Accessories:Terminating caps for bus integrity
Key Engineering Features
The1769-CRR1(1769-CRR1) is a critical component for complex control architectures requiring multi-level or multi-rail configurations:
Enhanced System Flexibility:Enables engineers to split a high-density I/O station into two separate banks, which is essential when cabinet space is limited vertically or when logical grouping of modules is required.
Integrated Bus Termination:The cable includes required terminating caps to maintain signal integrity across the extended ModuleBus, preventing data reflections that could cause communication faults.
High Current Throughput:Capable of carrying up to 1.4 Amps of backplane current at 24V, providing sufficient power to drive several I/O modules on the secondary expansion bank.
Rugged Connection Design:Built to withstand the rigors of industrial environments, ensuring a secure and stable electrical connection between the high-speed bus interfaces of the I/O modules.
