Configured for right-to-left expansion bus connection in CompactLogix systems, the Allen-Bradley 1769-CRL3 (1769-CRL3 Expansion Cable) provides direct physical interconnection between Compact I/O modules. It supports a 1 meter cable length for controller and I/O expansion assemblies.
Hardware Specifications
Parameter
Specification
Model
1769-CRL3
Brand
Allen-Bradley
Origin
USA
Product Type
Expansion Cable
Product Line
CompactLogix
Category
PLC Components
Series
A and B
Cable Type
Right-to-left expansion cable
Cable Length
1 m (3.28 ft)
Weight
0.20 kg (0.44 lbs)
Dimensions
Not specified in available data
Operating Temp
0 to 60 deg C (32 to 140 deg F)
Isolation Voltage
30 V continuous
Backplane Current
1.4 A at 24 V
Power Consumption
33.6 W
Power Dissipation
7.5 W
Enclosure Type
Open
UPC
662468993029
Industrial Control Bus and Expansion Compatibility
The 1769-CRL3 operates as a CompactLogix expansion interconnection component and maintains electrical continuity between connected modules. In addition, the cable supports Compact I/O architecture requirements by providing the physical link required for left-to-right or right-to-left module arrangement depending on system configuration.
The CompactLogix platform uses structured backplane communication between controller assemblies and I/O modules. Therefore, proper cable orientation, seating, and mechanical installation directly affect expansion bus operation. The cable does not perform signal processing functions; it provides the required electrical path between connected hardware segments.
Frequently Asked Questions (FAQ)
Q: What function does the Allen-Bradley 1769-CRL3 perform in a CompactLogix system? A: The 1769-CRL3 provides a right-to-left expansion connection between CompactLogix 1769 series modules. It transfers electrical communication and power connections required by the expansion assembly.
Q: Can the 1769-CRL3 operate outside the specified temperature range? A: The specified operating range is 0 to 60 deg C. Operation outside this range requires system-level environmental evaluation and may affect cable performance.
Q: Does the 1769-CRL3 require ESD protection during handling? A: Yes. Technicians should use static-safe workstations and protective packaging during storage and installation to reduce electrostatic discharge risks.
Field Installation Guidelines
Install the 1769-CRL3 with power removed from the CompactLogix assembly. Verify the cable direction before connection because the module interface uses a defined expansion orientation.
Route the cable away from high-voltage conductors, motor power cables, and sources of electromagnetic interference. Maintain proper cable management to prevent mechanical stress on the connectors.
Use ESD-controlled handling procedures during installation and storage. Inspect connectors before installation and confirm that the cable is fully seated within the expansion interface.
