3Com LSBM1SRP1M1 Installation Manual page 56

Installation Manual
H3C S9500 Series Routing Switches
II. Connecting DC Power Cables
The DC power cables are connected to the terminal block, and are fixed with screws. A
plastic cover plate is installed in front of the terminal block for the sake of connection
reliability.
Caution:
Completely power off the switch before connecting the DC power cord.
Before removing or installing the DC power cables, you need to remove the plastic
cover plate. Install it after installing/removing the DC power cables.
Take the following steps to connect the DC power cables:
1) Remove the plastic cover plate and loosen the fixing screws on the terminal block
of the DC PSU with a Philips screwdriver.
2) Connect one end of the cable with –48V OT terminals (blue) to the NEG(–)
terminal on the PSU and fasten the corresponding fixing screw. Connect the other
end to the NEG (–) terminal of the source power supply.
3) Connect one end of the cable with GND OT terminals (black) to the RTN (+)
terminal on the PSU and fasten the corresponding fixing screw. Connect the other
end to the RTN (+) terminal of the power source.
4) Connect one end of the cable with PGND OT terminals (yellow-green) to the
PGND terminal on the PSU and fasten the corresponding fixing screw. Connect
the other end to the ground bar of the switch.
5) Install the plastic cover plate.
(1) Terminal block
(4) Fail LED
Figure 3-15 NEPS600-D appearance
(2) Input LED
(5) PSU handle
3-14
Chapter 3 Switch Installation
(3) Output LED
(6) Power switch