Power Supply Units (Psus) And Fans - Allied Telesis x900-48FE Hardware Reference Manual

Hardware Reference
PSU and FOM installed in an x900-24XT switch
PSUs and chassis fans installed in a SwitchBlade x908
AC 100-240V 50/60Hz 9A MAX
SYSTEM PSU 1:
DC 40-60V 20A MAX
AT-FAN03
FAULT
FAN 1
C613-03092-00 REV J

Power Supply Units (PSUs) and Fans

Depending on the model, single or dual PSUs can be fitted on the rear of the
switch, as either AC or DC. Some models also have fan-only modules (FOM)
and chassis fans.
Model Description
AT-8948 Supports 1 PSU and 1 FOM, or 2 PSUs.
x900-48FE
A second PSU is available for optional redundancy. When two are
x900-48FS
fitted, they must be the same type of current, either AC or DC.
AT-9924T
When there is just one PSU in an AT-9900 series switch, it must be in
AT-9924SP
Bay 2 for optimised cooling.
x900-12XT/S Supports 1 fixed PSU.
AT-9924Ts Supports 1 PSU and 1 FOM, or 2 PSUs.
x900-24XT
A second PSU is available for optional redundancy.
x900-24XS
SwitchBlade x908 Supports 2 System PSUs and 2 chassis fan modules.
AT-PWR01 AC or DC power supply unit.
AT-PWR02 AC power supply unit.
AT-PWR05 AC or DC power supply unit.
AT-FAN01 Fan-only module (FOM).
AT-FAN03 Chassis fan module.
Each PSU and FOM contains an EPROM chip that contains information, such
as the type of module, serial number, and revision of the PSU. This information
is available through the command line interface (CLI).
How to install a PSU or fan in the switch is described in the Removable Power
Supply and Fan Installation Guide.
AC 100-240V 50/60Hz 9A MAX
SYSTEM PSU 2:
DC 40-60V 20A MAX
CAUTION: DISCONNECT
POWER CORD PRIOR
TO REMOVAL OF PSU
CAUTION: DISCONNECT ALL
POWER CORDS TO DISABLE
SYSTEM POWER
STACKING PORT 1
FOR CENTRALISED
DC POWER
CONNECTION,
INSTALL ONLY IN A
RESTRICTED ACCESS
LOCATION
STACKING PORT 2
35
AT-FAN03
FAULT
FAN 2