Alcatel-Lucent 90-6700-01-00-G Fan Unit

The Alcatel-Lucent 90-6700-01-00-G Fan Unit is a high-performance cooling assembly engineered for active thermal management and forced-air circulation in Alcatel-Lucent telecommunications equipment platforms including optical transport systems, service routers, switching platforms, and broadband access infrastructure. This module provides critical cooling functionality to maintain optimal operating temperatures for installed line cards, routing engines, switching fabric modules, control processors, power supply units, and other heat-generating components in high-density chassis enclosures deployed in telecommunications service provider core, aggregation, edge network, and data center applications. The Fan Unit implements redundant fan architecture with multiple high-efficiency brushless DC fans featuring variable speed control based on real-time temperature monitoring from distributed sensors throughout the chassis to balance cooling performance with acoustic noise reduction and power consumption optimization. The assembly features integrated temperature sensors providing continuous monitoring of inlet and outlet air temperatures, internal chassis ambient conditions, and individual module temperatures with automatic fan speed adjustment and alarm generation when temperature thresholds are exceeded. Advanced features include N+1 or 2N redundancy with automatic failover, hot-swappable design enabling field replacement without service disruption to the networking platform, individual fan failure detection with status reporting to the system controller, intelligent airflow management with baffles and ducting to ensure uniform cooling across all installed modules, and filtered air intake systems to prevent dust and particulate contamination of internal components. The fan unit connects to the chassis backplane for power distribution via redundant −48 V DC or AC feeds and for communication with the system control processor through I²C, SMBus, or IPMI interfaces for remote monitoring and management. Management interfaces include SNMP v3, TL1, NETCONF/YANG, and proprietary element management system protocols for integration with Alcatel-Lucent's 1350 OMS, 5520 AMS, 5620 SAM, and third-party data center infrastructure management (DCIM) platforms, providing access to fan speed RPM, temperature readings, airflow status, alarm conditions, and predictive maintenance alerts. The module features robust electromagnetic interference (EMI) shielding, conductive gaskets, and filtered ventilation to maintain electromagnetic compatibility and prevent contamination. Fan motors implement sensorless or sensor-based commutation with typical airflow capacities ranging from 120-380 CFM per fan depending on configuration, static pressure ratings of 0.5-2.2 inches H₂O, and acoustic noise levels below 64 dBA at full speed. The assembly includes integrated speed control circuitry, tachometer outputs for RPM monitoring, and fault detection for locked rotor, open circuit, and degraded performance conditions. Power is distributed via redundant power feeds with integrated voltage regulation, current monitoring, and overcurrent protection. Environmental specifications comply with ETSI EN 300 019 Class 3.1 and NEBS GR-63 Level 3 standards, supporting continuous operation in controlled telecommunications facilities with ambient temperatures from 0 °C to +45 °C and relative humidity from 5% to 95% non-condensing. The Fan Unit is validated for deployment in Alcatel-Lucent 1650SM/1660SM/1670/1696MS/1830/1850 series optical transport platforms, 7750 SR, 7450 ESS service routers, 7300/7330/7340/7360 ISAM broadband access platforms, and related telecommunications and data networking equipment, and ensures compliance with Telcordia GR-487, ETSI EN 300 386, NEBS GR-63, IEC 60917, and RoHS/WEEE directives for telecommunications equipment cooling, environmental protection, and operational reliability.