Juniper SRX1500, Hardware Manual

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an open circuit) to chassis ground will be -48V, and the cable with very low resistance
(indicating a closed circuit) to chassis ground will be RTN.
CAUTION: You must ensure that power connections maintain the proper
polarity. The power source cables might be labeled
(+)
and
(–)
to indicate
their polarity. There is no standard color coding for DC power cables. The
color coding used by the external DC power source at your site determines
the color coding for the leads on the power cables that attach to the
terminal studs on each power supply.
4.
Remove the screws and square washers from the terminals, using a Phillips (+)
screwdriver, number 2.
5.
Secure each power cable lug to the terminals with the square washers and the screws.
Apply between 23 in.-lb (2.6 Nm) and 25 in.-lb (2.8 Nm) of torque to each screw.
•
Secure each positive (+) DC source power cable lug to a RTN (return) terminal.
• Secure each negative (–) DC source power cable lug to a -48V (input) terminal.
6.
Replace the clear plastic cover over the terminal studs on the faceplate.
7.
Verify that the power cables are connected correctly, that they are not touching or
blocking access to services gateway components, and they do not cause a tripping
hazard.
8.
Repeat Steps 1 through 7 for the second power supply, if you are installing one.
NOTE: If power is lost to the services gateway, the Power-On/Power-Off
state is retained. For example, if the services gateway loses power while the
device is on, when power returns, the device will still be in the On state.
Related
Documentation
Powering On the SRX1500 Services Gateway on page 68
•
•
Powering Off the SRX1500 Services Gateway on page 69
•
Installing a DC Power Supply on the SRX1500 Services Gateway on page 54
•
Replacing a DC Power Supply on the SRX1500 Services Gateway on page 102
Powering On the SRX1500 Services Gateway
To power on the services gateway:
1.
Ensure that you have connected the power supply to the device.
Copyright © 2017, Juniper Networks, Inc. 68
SRX1500 Services Gateway Hardware Guide