General Electric IC697ACC721 Series 90-70 120 VAC Rack Fan Assembly

Description

The General Electric IC697ACC721 is a 120 VAC rack fan assembly engineered for GE Fanuc Series 90-70 programmable logic controller chassis and compatible PACSystems RX7i enclosures. The unit provides supplementary forced-air convection to dissipate thermal buildup generated by high-density I/O modules, power supplies, coprocessors, and third-party VME cards installed in 19-inch racks.

The assembly incorporates three low-noise ball-bearing cooling fans mounted in a dedicated tray structure designed for installation directly beneath the rack chassis. Airflow is directed upward through the chassis ventilation slots to maintain safe internal operating temperatures across all slotted modules. The three fans are electrically joined in parallel using an included wiring harness, terminating in a 3-foot lead with stripped wire ends designed for connection to a switched 120 VAC control circuit.

Features

• Three independent ball-bearing cooling fans arranged to deliver uniform airflow across the base of the rack.
• Operates from a standard 120 VAC 50/60 Hz single-phase industrial power supply.
• Pre-wired parallel harness simplifies electrical connection, providing a 3-foot stripped power lead from the left-side fan connector.
• Includes removable polyurethane foam filter media rated at 30 PPI with a UL94V-0 rated plastic guard retainer.
• High reliability design with an MTBF exceeding 80,000 hours per fan at 40 degC ambient operating conditions.

Technical Specifications

Installation Guidelines

• Mount the fan tray directly beneath the Series 90-70 rack chassis using standard mounting hardware, ensuring orientation directs air upwards through the chassis cards.
• Ensure the 3-fan wiring harness is fully seated into all three mating fan header connectors before applying power.
• Wire the 3-foot stripped AC power lead into the same branch power circuit feeding the Series 90-70 PLC power supply to guarantee cooling fans operate concurrently with the controller.
• Maintain unobstructed air intake clearance below the fan assembly and exhaust clearance above the rack chassis.
• Periodically inspect and clean the polyurethane filter elements; replace saturated media to preserve rated airflow (71 CFM per fan).

Compatibility

• GE Series 90-70 standard 9-slot and 5-slot racks.
• GE Series 90-70 17-slot VME Integrator racks (IC697CHS782 rear mount and IC697CHS783 front mount).
• GE Series 90-70 Redundant racks (IC697CHS770 rear mount and IC697CHS771 front mount).
• GE PACSystems RX7i chassis enclosures requiring supplemental 120 VAC forced-air ventilation.