Lacie 12big Rack Network User Manual - Page 13

Power Supply Unit

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LaCie 12big Rack Network User Manual System Overview page 13 1.7. Power Supply Unit AC-DC Power is provided by two dual-redundant power supply units with specific load capability, mechanical packaging and a power cage with output loom to suit this application. A Power Supply Mounting Cage is fitted in the rear of the enclosure as part of the subsystem core product. The cage houses two individually hot pluggable 850W AC Power Supply Units (PSUs), each with its own IEC inlet connector and failure indicator. PSU voltage operating ranges are nominally 100V - 240V AC, selected automatically. A typical PSU is shown in Fig. 07. Each PSU incorporate an Audible Alarm to indicate when a fault state is present and a bi-color (Green/Red) LED which indicates the PSU status. 1.7.1. Multiple Power Supply Units The LaCie 12big Rack Network includes two PSUs fitted in the Power Supply Mounting Cage, providing dual power sources for the system so that if one PSU fails the other maintains the power supply and enclosure operation is not affected while you replace the faulty unit. PSU replacement should only take a few minutes to perform but must be completed within 10 minutes from removal of the failed PSU. Fig. 07 - Power Supply Unit

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LaCie 12big Rack Network
System Overview
User Manual
page 13
1.7. Power Supply Unit
AC-DC Power is provided by two dual-redundant power supply units
with specific load capability, mechanical packaging and a power
cage with output loom to suit this application.
A Power Supply Mounting Cage is fitted in the rear of the enclosure
as part of the subsystem core product. The cage houses two indi-
vidually hot pluggable 850W AC Power Supply Units (PSUs), each
with its own IEC inlet connector and failure indicator.
PSU voltage operating ranges are nominally 100V - 240V AC, se-
lected automatically. A typical PSU is shown in
Fig. 07
.
Each PSU incorporate an Audible Alarm to indicate when a fault
state is present and a bi-color (Green/Red) LED which indicates the
PSU status.
1.7.1.
Multiple Power Supply Units
The LaCie 12big Rack Network
includes two PSUs fitted in the Pow-
er Supply Mounting Cage, providing dual power sources for the sys-
tem so that if one PSU fails the other maintains the power supply and
enclosure operation is not affected while you replace the faulty unit.
PSU replacement should only take a few minutes to perform but
must be completed within 10 minutes from removal of the failed
PSU.
Fig. 07 - Power Supply Unit