Juniper Junos Space JA1500, Hardware Manual

Page: 55 / 210

The Junos Space Appliance starts powering on when you supply power to the power
supply module. If the power supply module is correctly installed and functioning normally,
the LED on the power supply module displays green when the power supply module is
powering the appliance, and amber when the power supply module is in standby mode
(not powering the appliance).
Related
Documentation
AC Power Supply in Junos Space Appliances on page 15
•
•
General Electrical Safety Guidelines and Warnings on page 175
•
Preventing Electrostatic Discharge Damage on page 176
•
Replacing the AC Power Supply Module on a Junos Space Appliance on page 126
Connecting DC Power to the Junos Space Appliance
Before connecting the Junos Space Appliance to a DC power source, do the following:
• Ensure that you have read the guidelines in the “DC Power Electrical Safety Guidelines”
on page 180 topic.
•
Ensure that you have taken the necessary precautions to prevent ESD damage.
•
Ensure that you have grounded the appliance by connecting the DC power supply
grounding cable to earth ground.
CAUTION: Before you connect power to the Junos Space Appliance, in
order to meet the safety requirements and ensure proper operation, get a
licensed electrician to attach a cable lug to the grounding and power cables
that you supply. A cable with an incorrectly attached lug can damage the
appliance (for example, by causing a short circuit).
•
Ensure that you have the following parts and tools available:
• (Optional) Electrostatic discharge (ESD) grounding strap
• DC power source cables (12-14 AWG) with ends of the wire stripped ~12mm and
twisted
•
Phillips (+) screwdriver, number 1
You connect DC source power to the appliance by attaching power cables from external
DC power sources to the terminal studs on the DC power supply module faceplates.
WARNING: DC-powered Junos Space Appliances are intended for installation
only in restricted access locations.
WARNING: Before you perform the following procedure, ensure that power
is removed from the DC circuit. To ensure that all power is off, locate the
41 Copyright © 2018, Juniper Networks, Inc.
Chapter 6: Connecting the Appliance