Spectra T950 - Page 35

Chapter 1 — Library Overview Library Features
November 2016 User Guide—Spectra T950 Library
35
Drives
Thelibraryaccommodatesmultiplegenerationsofhigh‐performance,high‐
capacity,full‐heightLTOdrivesorTS11x0technologydrives.Thedrivesare
installedinDBAs,witheachDBAaccommodatinguptofourdrives.Drivesare
hot‐swappabletoprovideuninterruptedoperation.Tolearnmore,seeTape
Drivesonpage50.
Note: Anydrivebaysthatdonothavedrivesinstalledmusthavecovers
installedtomaintainproperaircirculationthroughouttheframeandtoprotect
internallibrarycomponents.
5/12 VDC Power
Supply Modules
The5/12VDCpowersupplymodulesconvertACinputtoprovidethe5VDC
and12VDCpowerusedbythedrivesintheframe.Inthemainframe,these
powersuppliesalsoprovidepowe rtothecontrollerbays,theLCM,theRCM,
andtheLCDoperatorpanel.Withtheexception
ofitsvoltagerating,the5/12
VDCpowersupplymodulecloselyresemblesthe24VDCroboticspower
supplymoduleshownonpage34.
AminimumofonepowersupplyperpopulatedDBAisrequired.Installingan
optionalN+1powersupply,whereNisthenumberofDBAswithoneor
more
installeddrives,providesredundancyandfailoverprotectionintheeventthat
asinglepowersupplyfails.SeeRedundantPowerSuppliesonpage79for
additionalinformation.
EachpowersupplymodulehastwoindicatorLEDs,oneforACpowerstatus
andoneforDCpowerstatus.ThecoloroftheLED
indicatesthestatus.
 Green—Thepowerisonandfunctioningnormally.
 Orange—Thepowersupplyhasafaultcondition.
 Off—Thepowerisnotonorthepowersupplymoduleisnotfunctioning
normally.
Note: Anybaysthatdonothavepowersupplymodulesinstalledmusthave
coversinstalledtomaintainproperaircirculationthroughouttheframe.
Figure 6 The 5/12 VDC power supply modules and the PCM.
Component Description
Power supply modules
Power Control
Module (PCM)
DC power
AC power
status
status
Reset
button