GE IC693CBL301: Reliable Rack Expansion Cable for Series 90-30

Core Function of This Rack Expansion Cable

The GE IC693CBL301 connects a main PLC rack to an expansion rack. This cable carries power and communication signals between the two units. It enables system expansion beyond the base rack’s slot capacity. Consequently, the cable allows engineers to add more I/O modules to the control system.

Physical Dimensions and Cable Construction

This rack expansion cable measures exactly 1 meter in total length. The cable body consists of a 40-conductor flat ribbon design. Each conductor uses 28 AWG stranded copper wire for flexibility. The cable thickness reaches 2.5 mm for easy routing inside cabinets. You will find two 50-pin D-sub connectors at both ends. The GE IC693CBL301 weighs approximately 180 grams for lightweight handling.

Connector Types and Pin Configuration

The GE IC693CBL301 uses a male 50-pin D-sub connector on each end. Each connector features thumbscrews for secure attachment to the rack. Pin 1 carries the +5 V DC logic supply to the expansion rack. Pin 2 provides the common ground return path for all signals. The remaining pins carry address, data, and control bus signals. Gold-plated contacts resist corrosion and ensure low resistance connections.

Signal Integrity and Shielding Design

This expansion cable does not include a separate outer shield. However, the flat ribbon geometry provides inherent noise rejection. Twisted pairs within the ribbon cancel electromagnetic interference effectively. The cable supports a maximum expansion distance of 1 meter only. Exceeding this length may cause signal degradation or data errors. The insulation material meets UL 94 V-2 flammability rating for safety.

Electrical Ratings and Power Distribution

The GE IC693CBL301 carries the following electrical loads to the expansion rack. Pin 1 supplies up to 1.5 A at 5 V DC maximum. Pin 2 returns the same current through the ground path. The remaining signal pins operate at TTL voltage levels (0 to 5 V). Each signal pin handles up to 50 mA of switching current. The cable introduces a voltage drop of 0.1 V at full load current.

Compatibility and System Requirements

This expansion cable works exclusively with GE Series 90-30 PLC systems. You must use a compatible expansion receiver module in the second rack. The cable connects the base rack’s expansion port to the receiver’s input port. Each system supports a maximum of two expansion racks using two cables. The module requires no additional programming for proper signal routing.

Installation and Handling Notes

You must power down both racks before connecting this expansion cable. Always align the D-sub connectors carefully before tightening the thumbscrews. Then, route the cable away from high-voltage power wiring. Do not bend the cable to a radius smaller than 25 mm. Regular inspection of the connectors prevents intermittent signal loss over time.