Instruction manual

1. Components Overview
59
1.5 Power Supply Module
This section describes the power supply modules used in external power units (EPU) for AX2400S series 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 and mounted in a power supply module slot of EPU-A.
Figure 1-63 External Appearance shows its appearance. For descriptions about (1) and (2) in the figure, see Table
1-29 LED Indications.
Figure 1-63 External Appearance
(1) DC-OK LED
(2) DC-ALM LED
(3) Handle
(4) Latch
(5) Power switch
Table 1-29 LED Indications
Number 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.