Cisco RFGW-10, Руководство по установке оборудования

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Cisco RF Gateway 10 Hardware Installation Guide
OL-16264-04
Chapter 1 Overview
Cisco RFGW-10 Components
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Online insertion and removal OIR support
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Failure monitoring of individual fans
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Backup temperature monitoring to control individual fan rotation per minute (RPM)
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Usage counter based on hours of operation (CLI-based)
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Front panel LED for alarm status indication
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Control and power circuit failure alarms
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On board multi-level fan speed control based on system temperature
The fan assembly draws air into the chassis and directs it across the internal system components. The
heated air exhausts out of the rear of the chassis as shown in
Figure 1-4 .
Figure 1-4 Cisco RFGW-10 Airflow
The fan tray has four speed levels based on the operating control modes for the system. After power on,
the fan speed is set according to the Supervisor provided ambient average air temperature and the
configured speed control mode in the system configuration. The default control mode setting configures
the fans at maximum speed. The speed of the fans regulate to a slower speed when the fan controller
stabilizes to the ambient temperature and chassis temperature. After startup, it may take up to 30 seconds
for the fans to stabilize at the requested RPM.
Figure 1-5 and Figure 1-6 show the fan assembly module. The fan tray has a single LED indicator (FAN
OK) located in the center of the module. The FAN OK LED status indicators are defined in Table 1-2 :
Table 1-2 Fan Assembly LED
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