Features - Cabletron Systems 9C214-2 Installation Manual

Introduction

Features

Diagnostic Controller for Management
Each 9C214-2 Power Supply has a diagnostic controller. This diagnostic controller
includes a microprocessor that monitors the numerous power supply functions
available to the Network Manager via the LCD on the 9C300-1 Environmental
Module, as well as local and remote management functions.
Internal Temperature Sensor
Each 9C214-2 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
Each 9C214-2 Power Supply has its own cooling fan. The microprocessor within
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
Each 9C214-2 Power Supply includes a thermal shutdown circuit. This circuit
protects the power supply from overheating by shutting the power supply down
if a thermal overload occurs. Automatic recovery takes place after the thermal
overload condition is corrected.
Load Sharing
Each 9C214-2 Power Supply uses a current sharing design. This design allows
multiple power supplies to equally (within ± 5%) share the output load. For
example, if two power supplies are used, each power supply provides 50% ± 5%
of the output load. This feature increases the life of each power supply.
Input Polarity Detection
The 9C214-2 Power Supply is equipped with an input polarity detection feature.
In the event that input to the terminal block is reversed, a buzzer within the
power supply sounds.
Hot Swapping
A 9C214-2 Power Supply can be installed or removed from the back of the chassis
while another power supply is operating without affecting network operation.
However, before removing a power supply make sure the switch is turned off.
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LANVIEW LEDs
Each 9C214-2 Power Supply has three LANVIEW LEDS: the PWR Status LED
indicates the status of the 9C214-2 input and all outputs, 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's capacity being
used.
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