Alcatel Lucent FSX-FM-1W Fan Module

The Alcatel Lucent FSX‑FM‑1W (also referenced as FSXFM1W) is a high‑performance fan module used in Alcatel‑Lucent OmniSwitch chassis and other compatible networking platforms. This field‑replaceable unit provides forced‑air cooling to maintain optimal operating temperatures for power supplies, line cards, and fabric modules. Its variable speed fans adjust airflow based on system thermal demands, balancing cooling efficiency with acoustic noise. The module is hot‑swappable, allowing replacement without service interruption.

Overview

The FSX‑FM‑1W is part of the OmniSwitch cooling infrastructure, designed for front‑to‑back airflow. It contains multiple high‑quality ball‑bearing fans that deliver substantial CFM (cubic feet per minute) airflow to dissipate heat from high‑density components. The module integrates temperature sensors and communicates with the chassis management controller to report fan speed, status, and fault conditions. It is typically installed in dedicated fan bays, with redundancy provided by additional modules in N+1 configurations.

Key Features

• Multiple fans per module for high‑volume airflow

• Variable speed control based on temperature sensors

• Hot‑swappable for in‑service maintenance

• LED indicators for power, operation, and fault

• Low acoustic noise at normal operation

• Built‑in fan failure detection and alarm

• Compatible with OmniSwitch 6850, 9000, and 10000 series

Technical Specifications

• Airflow: 120 CFM per module (typical)

• Fan Speed: 8000‑12000 RPM (variable)

• Power Consumption: 20 W typical, 35 W max

• Voltage: +12 VDC from backplane

• Acoustic Noise: < 55 dBA at normal speed

• MTBF: > 150,000 hours

• Operating Temperature Range: 0°C to 50°C

• Dimensions: 86 mm (H) × 220 mm (W) × 250 mm (D)

• Weight: 1.8 kg

Applications

This fan module is essential for high‑density chassis used in data centers, wiring closets, and central offices. It ensures reliable cooling for densely populated OmniSwitch systems, preventing thermal throttling or component damage. Its redundancy and hot‑swap capability make it suitable for mission‑critical environments requiring high availability.

Management and Monitoring

The FSX‑FM‑1W communicates with the chassis management processor via I²C, providing real‑time status reports. Network administrators can monitor fan speed, temperature, and health through the switch CLI, web interface, or SNMP. Alerts are generated if a fan fails or if the module is removed, enabling prompt response.

Installation and Maintenance

Installation involves sliding the module into the appropriate fan slot until it clicks into place and securing the retaining screws. The module automatically powers on and adjusts speed. Maintenance includes periodic cleaning of dust filters (if present) and verifying that airflow paths are unobstructed. If a fan fails, the module can be replaced while the chassis remains operational.

Conclusion

The Alcatel Lucent FSX‑FM‑1W fan module provides reliable, intelligent cooling for OmniSwitch chassis. Its combination of high airflow, variable speed, and hot‑swappability ensures that networking equipment remains within safe thermal limits, maximizing service life and performance.