Cabletron Systems 9C214-3, Installation Manual

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1-3
Introduction
Features
Diagnostic Controller for Management
Each 9C214-3 power supply has a diagnostic controller which includes a
microprocessor that monitors the numerous power supply functions available to
the Network Manager via LCD, as well as local and remote management.
Internal Temperature Sensor
Each 9C214-3 power supply has its own built-in temperature sensor for
monitoring and reporting its own internal temperature to the Network Manager
via LCD, as well as local and remote management.
Cooling Fan
The diagnostic controller increases or decreases the fan speed based on the
temperature of the power supply. In the event of microprocessor failure, fan
speed defaults to 100% to ensure protection of the power supply.
Thermal Overload Protection
A thermal shutdown circuit is included within each 9C214-3 power supply. This
circuit protects the power supply from overheating if a thermal overload occurs.
Automatic recovery takes place after the thermal overload condition is corrected.
Load Sharing
Each 9C214-3 power supply uses a current sharing scheme whereby if two power
supplies are used, under all load conditions, each supply provides 50% (± 5%) of
the required load on each output. This feature increases the life of a power supply.
Universal AC Input
The 9C214-3 power supply accepts AC input voltage ranging from 207–264 volts
at 50/60Hz.
Hot Swapping
9C214-3 power supplies can be installed or removed from the back of the chassis
while another power supply is operating without affecting network operation.
LANVIEW
®
LEDs
Each 9C214-3 power supply has three LANVIEW LEDS: the PWR Status LED
indicates the status of the 9C214-3 power output, the SMB Status LED indicates
the status of the diagnostic controller, and the Power Supply Level Indicator LED
indicates the percentage of the power supply load being used.