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.
10. Loosen the captive screws on the cable restraints on the right edge of the power
supply faceplate.
11. Route the positive and negative DC power cables through the top and bottom
of each cable restraint.
12. Tighten the cable restraint captive screws to hold the power cables in place.
13. Verify that the power cabling is correct, that the cables are not touching or
blocking access to router components, and that they do not drape where people
could trip on them.
14. Replace the clear plastic cover over the terminal studs on the faceplate.
15.
Switch the circuit breakers on the power supply to the on position (|).
NOTE: If you have only one power supply, or the system is completely powered off
when you power on the power supply, the Routing Engine boots as the power supply
completes its startup sequence.
16. Check the LEDs on the power supply faceplate. If the power supply is correctly
installed and is functioning properly, the DC OK LED lights steadily, and the CB
ON LED blinks momentarily, then lights steadily.
NOTE: After a power supply is powered on, it can take up to 60 seconds for status
indicators—such as the output status LEDs on the power supply, the show chassis
command display, and messages on the LCD on the craft interface—to indicate that
the power supply is functioning normally. Ignore error indicators that appear during
the first 60 seconds.
NOTE: After powering on a power supply, wait at least 60 seconds before turning it
off. If you have only one power supply, power off the system before turning off the
power supply. See Powering Off the T640 Router.
6 ■ Installing a T640 Two-Input Power Supply
To Next Page
Loading...
Need help?
General
