b.
Attach the negative (–) DC source power cable lugs to the
–48V
(input) terminals.
Use a 7/16-in. (11 mm) nut driver or wrench to tighten the nut. Apply between 23 lb-in.
(2.6 Nm) and 25 lb-in. (2.8 Nm) of torque to each nut.
NOTE:
For power supplies set to
2-INPUT
mode (required for the T640
router and TX Matrix router), connect two DC power cables, one for
RETURN and one for –48 V to
INPUT 0
and two DC power cables, one for
RETURN and one for –48 V to
INPUT 1
.
NOTE:
INPUT 0
and
INPUT 1
on the three-input 240-A DC power supply
in slot
PEM0
must be powered by dedicated power feeds derived from
feed A, and
INPUT 0
and
INPUT 1
on the three-input 240-A DC power supply
in slot
PEM1
must be powered by dedicated power feeds derived from feed
B. This configuration provides the commonly deployed A/B feed
redundancy for the system.
8.
Loosen the captive screw or screws on the cable restraint on the right edge of the
power supply faceplate.
9.
Route the DC power cables through the cable restraint.
10.
Tighten the cable restraint captive screw or screws to hold the power cables in place.
11.
Verify that the power cabling is correct, that the power cables are not touching or
blocking access to other hardware components, and that they do not drape where
people could trip on them.
12.
Replace the clear plastic cover over the terminal studs on the faceplate.
281
Copyright © 2010, Juniper Networks, Inc.
Chapter 24: Replacing TX Matrix Hardware Components
Содержание TX MATRIX
Страница 1: ...TX Matrix Router Hardware Guide Published 2010 10 18 Copyright 2010 Juniper Networks Inc ...
Страница 18: ...Copyright 2010 Juniper Networks Inc xviii TX Matrix Hardware Guide ...
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Страница 52: ...Figure 8 Front View of the TX Matrix Router Copyright 2010 Juniper Networks Inc 20 TX Matrix Hardware Guide ...
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Страница 389: ...PART 6 Index Index on page 359 357 Copyright 2010 Juniper Networks Inc ...
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