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Connect DC Power Supply Modules
Copyright © 2014, Juniper Networks, Inc.
Switch on the external circuit breakers to provide voltage to the DC power source
10.
cable leads.
NOTE:
Each PDM must be connected to a dedicated
breaker for the DC power source. The PDM has a switch to accommodate
DC circuit breaker amperage.
Verify that the power cabling is correct, that the cables are not touching, and that they
11.
do not block access to router components or drape where people could trip on them.
Close the cable restraint cover over the terminal studs, and tighten the captive screws.
12.
To install an MX2010 DC PSM:
Verify that the power switch on the PSM is in the off (
1.
Figure 40 on page
60).
Move the input mode DIP switch
2.
feed
INP0
(expected to be connected), and DIP switch
position), for the top feed
and
are turned to the
1
be connected, (see
Figure 40 on page
The DC power subsystem is feed redundant. Each DC PSM can be connected to two
separate feeds from different sources that are used to provide feed redundancy. If
two feeds are connected, PSM input power will be drawn from the feed with the higher
voltage present. There are two PDMs per power subsystem capable of carrying nine
feeds each. Connect feeds from one source to one PDM and feeds from the other
source to the second PDM of the power subsystem. The primary input of the PSM is
a dual redundant feed,
INP0
feeds may or may not be providing current. In addition, a PSM failure triggers the alarm
LED on the craft interface. Each PDM has an LED per feed indicating whether the feed
is active or not, or whether the feed is connected properly.
(left switch) to the
0
(expected to be connected). If both DIP switches
INP1
position, then both top and bottom feeds are expected to
ON
60).
and
. Both feeds are active during operation, but both
INP1
Connect DC Power Supply Modules
, or
DC circuit
60A
80A
O
) position (see
(top position), for the bottom
ON
1
(right switch) to the
ON
(top
0
59
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