Instruction manual

1. Components Overview
74
1.5 Power supply module
This section describes the power supply modules used in external power units (EPU) for
AX2400S and AX3600S series switches. Add power supply modules to the EPU to use the
EPU for more than one switch.
There are two types of power supply modules: EPU-AM for EPU-A and EPU-BM for
EPU-B. For available combination of switches, EPUs and power supply modules, see 1.4
External power unit (EPU).
1.5.1 EPU-AM
EPU-AM is a power supply module for EPU-A. EPU-AM is mounted in a power supply
module slot of EPU-A.
Figure 1-81 External appearance shows its appearance. For descriptions about (1) and (2)
in the figure, see Table 1-38 LED indication.
Figure 1-81 External appearance
(1) DC-OK LED
(2) DC-ALM LED
(3) Handle
(4) Latch
(5) Power switch
Table 1-38 LED indications
Nu
mb
er
Name
Type
Description
Details
(1)
DC-OK
Green LED
Indicates the power output
status from the power
supply modules.
Lit in green: Normal output from the power
supply modules.
Off: Output power failure from the power
supply modules or powered-off.
(2)
DC-ALM
Red LED
Indicates the power output
status from the power
supply modules.
Lit in red: Output power failure from the
power supply modules.
Off: Normal output from the power supply
modules or powered-off.
1.5.2 EPU-BM
EPU-BM is a power supply module for EPU-B. EPU-BM is mounted in a power supply
module slot of EPU-B.