JUNOS Internet Software Network Operations Guide: Hardware
514 ! Understanding Redundant Power Supplies
Figure 204: M40e Router Redundant Power Supplies
DC power
supplies
PCG 0
PCG 1
AC power
supplies
B/PEM1
A/PEM0
B/PEM1
A/PEM0
PCG 0
PCG 1
O
F
F
O
F
F
M40e router
AC power supply
DC power supply
1766
CB ON
TURN OFF CIRCUIT
BREAKER BEFORE REMOVING
OR INSERTING PEM.
INSERT PEM THEN
TURN OFF CIRCUIT
BREAKER AFTER 1 MINUTE.
ENHANCED PEM
CAUTION
CB OFF
OUTPUT OK
PEM
SELF TEST
TIGHTEN THESE SCREWS FIRST
OFF
PEM
SELF TEST
OUTPUT OK
NOMINAL INPUT
200-240VAC 16 A
47-63 Hz
T
IG
H
T
E
N
T
H
E
S
E
S
C
R
E
W
S
F
IR
S
T
Install only in an M40e router
CAUTIO
N
TO COMPLETELY DE-ENERGIZE
THE SYSTEM, DISCONNECT
M
AXIM
UM
OF 2 POW
ER CORDSETS
APPARATEN SKALL ANSLUTAS
TILL JORDAT UTTAG NAR DE
ANSLUTS TILL ETT NATVERK
:
: