5-9
Cisco 1120 Connected Grid Router Hardware Installation Guide
OL-26438-02
Chapter 5 Connecting the Router to Power
Connect to DC Power (Optional)
Verify AC Power Connection
After you connect the router to AC power, verify that the power is being supplied to the router by
checking the status of the SYS (System) LED. As the router starts up, the SYS LED will show these
states:
For the SYS LED location, see
Figure 10-1
in the chapter
Router LED Locations and States
.
Connect to DC Power (Optional)
You can connect the router to a DC power source that provides backup power to the router in cases when
AC power is disrupted or fails. You must provide the DC power source and ensure that it is compliant
with the installation site requirements.
To connect a DC-input power source to the router, follow these steps:
Step 1
Turn off power to the DC power source at the designated circuits.
Step 2
Using a wire-stripping tool to strip both of the wires from the DC-input power source. Expose the wire
to the appropriate length for the terminal block, about 0.25 inches.
Step 3
Insert the wires into the terminal block openings that correspond to the labeled DC terminals shown in
Figure 5-1
and described in
Table 5-1
.
Make sure to match the polarity (negative-to-negative and positive-to-positive) when you connect the
wires to the terminal block openings:
Sequence
State
Description
1
Yellow
System is receiving power.
2
Green blinking
The system is starting up or power cycling, and loading system
software, including BIOS and operating system.
3
Green solid
The system is functioning normally.