Spectra T950 - Page 36

Chapter 1 — Library Overview Library Features
November 2016 User Guide—Spectra T950 Library
36
Power Control
Module (PCM)
ThePCMsuppliespowertothepowersupplieswhenyoupressthepower
buttononthefrontpanelofthemainframe.Itmonitorsthepowersupply
modulesintheframeforoutputvoltage,outputcurrent,powersupplyfan
operationalstatus,andpowersupplyoperationaltemperature.ThePCMuses
thevoltage
andcurrentdatatocalculatethelibrarypowerusagethatis
displayedthroughtheBlueScaleuserinterface.
Dual AC Power
Module
ThedualACpowermoduleprovidessurgeprotectionforthelibrarypower
systemandmonitorstheprimaryACinputpowertodeterminewhetheritis
presentandofadequatevoltage.IftheprimaryACinputfailsordropstoolow,
thedualACpowermodulehandlesthefailovertotheredundant,
secondary
ACinputuntiltheprimaryinputisrestored.
EachdualACpowermoduleincludesbothprimaryandsecondaryACpower
connectorsandtwobreakerswitches.TherearethreetypesofdualACpower
modules:dualAC,dualACwithconvenienceoutlet,anddualAC2.DualAC
withconvenience
outletanddualAC2powermodulesincludea200‐240VAC
convenienceoutlet.ThedualACconvenienceoutletisratedat5A.Thedual
AC2convenienceoutletisratedat2A.
Dual AC Power Module and Dual AC Power Module with Convenience Outlet
LEDsindicatethestatusoftheprimaryandsecondaryACinputs.
 PrimaryandSecondaryInputPowerLEDStates:
 Green‐Good/Active
 Orange‐UnderVoltage
CAUTION! If the power sources for the AC inputs for a frame using the dual AC
or dual AC with convenience outlets are not on the same phase, damage to the
library could result.
Component Description
Figure 7 Dual AC power module.
Primary and secondary
AC breaker switches
Primary and secondary
AC inputs
Primary and secondary
status LEDs
Figure 8 Dual AC power module with convenience outlet.
Primary AC breaker, Convenience outlet
input, and status LEDs
Secondary AC breaker,
input, and status LEDsand fuse