Power Supply Cable | Allen-Bradley 1771-CP1

The 1771-CP1 is a specialized short power interconnect cable manufactured by Allen-Bradley for the PLC-5 control system architecture. Designed for left-side mounting of the 1771-P7 power supply module directly adjacent to a 1771 I/O chassis, it routes regulated DC voltage from the power supply directly into the chassis backplane. Featuring low-profile D-sub connectors with captive locking screws, the cable ensures a compact, secure electrical connection within tight cabinet layouts.

Compact Cabinet Integration and Mechanical Design

With an overall length of 12.5 inches (0.32 meters), the 1771-CP1 is engineered specifically for adjacent chassis configurations, avoiding excess wire slack inside industrial control enclosures. The flexible outer jacket and low-profile connector boots accommodate tight bend angles between the left-mounted 1771-P7 power supply and the host 1771 chassis power receptacle, minimizing mechanical strain on connector pins.

Installation and Backplane Interface

The cable establishes a direct, high-current link between the DC output stage of the 1771-P7 power supply and the internal backplane bus of the I/O chassis. Each D-shell connector end is equipped with integrated retaining screws that thread firmly into mating chassis standoffs, maintaining reliable continuous contact despite machinery vibration and thermal cycling.

Specifications

Frequently Asked Questions

Q: What is the main difference between the Allen-Bradley 1771-CP1 and 1771-CP2 cables? A: The 1771-CP1 measures 12.5 inches (0.32 m) for mounting the 1771-P7 power supply directly on the left side of the chassis, whereas the 1771-CP2 is a 5-foot (1.52 m) cable used for remote power supply mounting.

Q: Does the 1771-CP1 support mounting the 1771-P7 power supply on the right side of the chassis? A: No, the cable length and connector orientation are designed specifically for left-side power supply mounting adjacent to compatible 1771 I/O chassis.