1769-ECR Product datasheet 

1769-ECR Functional Description

The Right End Cap Allen-Bradley 1769-ECR is an essential right end cap module specifically designed for the CompactLogix 5000 controller system, serving as a critical bus terminator that properly concludes the FlexBus communication circuitry. This module is mandatory for completing any valid CompactLogix hardware configuration, ensuring electrical integrity and mechanical stability throughout the assembly. The fundamental role of the ALLEN BRADLEY 1769-ECR Right End Cap is to signal the physical and electrical endpoint of the modular controller rack, preventing signal reflection and maintaining communication reliability across all connected modules.

With modest power requirements drawing just 5 mA at 5.1 VDC, the Allen-Bradley 1769-ECR PDF features robust environmental specifications including an operating temperature range of 0 to 60°C (32 to 140°F) and storage capabilities from -40 to 85°C. Weighing approximately 130 grams (0.286 lbs), this open-style enclosure module can operate at altitudes up to 2000 meters while withstanding vibration levels not exceeding 5g across 10-500 Hz frequencies. The mechanical design of it requires proper installation alignment with guide slots and secure engagement of the bus lever to establish reliable FlexBus connections.

Installation safety protocols strictly mandate that the End Cap 1769-ECR ROCKWELL must only be installed or removed when system power is completely disconnected, as hot-swapping can cause immediate controller faults and unplanned system shutdowns. The module's shock resistance ratings include 20g operational shock when DIN rail mounted and 30g when directly panel-mounted, demonstrating its rugged construction suitable for industrial environments. These specifications ensure it maintains reliable operation despite mechanical stresses common in manufacturing facilities.

Complementing its electrical termination function, the ALLEN BRADLEY 1769-ECR Cap provides crucial mechanical support and protection for the entire CompactLogix assembly. With humidity tolerance of 5-95% non-condensing and specific requirements for IP54 protection in Zone 2 environments, this component ensures system longevity. The comprehensive protection features of the 1769-EC Allen-Bradley PLC MODULE safeguard against environmental challenges while maintaining signal integrity across the controller backplane, making it an indispensable component for complete CompactLogix system implementation.