Cabling The Router For Power - Juniper ERX - RELEASE 11.1.X HARDWARE GUIDE 03-23-2010 Hardware Manual

To connect the console to the SRP I/O module:
1.
CAUTION: Do not overtighten the screws.
2.

Cabling the Router for Power

After you have correctly cabled the modules and I/O modules, you must attach
grounding and electrical wires before you attempt system power-up. Three main
tasks are involved:
1.
CAUTION: Switches may have inadvertently flipped to ON during shipping and
installation.
2.
WARNING: Always connect the grounding wires first (before connecting the power
cables) and disconnect them last when installing or servicing the router.
3.
See "System Specifications" on page 109 for the power requirements for ERX routers.
Table 8 on page 53 identifies the power input module cabling requirements, and
Figure 26 on page 55 shows the main components of a power input module.
Table 8: Power Input Module Cables and Wires Needed
Cable/Wire
ERX14xx models
One 10-AWG ground wire
Two 8-AWG wire leads
Two 8-AWG wire leads
ERX7xx models
One 10-AWG ground wire
Insert the female DB-9 connector into the RS-232 port, and tighten the screws.
Connect the other end of the cable to your terminal's serial port (VT100/ANSI).
Switch all router power switches to OFF.
Connect the grounding wires to the chassis.
Connect the power cables (AC or DC) to the power input modules.
From
Power input module ground terminal
Power input module Power A –48 VDC and
RTN leads
Power input module Power B –48 VDC and
RTN leads
Power input module ground terminal
Chapter 5: Cabling ERX Routers
To
Termination ground
Appropriate leads on power source
No.1
Appropriate leads on power source
No.2
Termination ground

Cabling the Router for Power

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