Power Supplies; Install A Dc Power Supply - Dell Force10 S4810P Quick Start Manual

Power Supplies

The S4810 is designed to support two hot-swappable power supplies with
integrated fans that provide the cooling for the chassis. The S4810 supports AC
power supplies with two air-flow directions (Normal and Reversed). Two power
supplies are required for full redundancy, but the system will operate with a
single power supply.
NOTE: If using a single PSU, you must install a blank plate in the other PSU slot.
Dell Force10 recommends using PSU0, if installing only one power supply.
WARNING: To prevent electrical shock, make sure the S4810 is grounded
properly. If you do not ground your equipment correctly, excessive emissions
may result. Use a qualified electrician to ensure that the power cables meet
your local electrical requirements.
WARNING: Electrostatic discharge (ESD) damage can occur if components
are mishandled. Always wear an ESD-preventive wrist or heel ground strap
when handling the S4810 and its components.

Install a DC Power Supply

The power supply units in the S4810 are field replaceable. When both power
supplies are up and running, one power supply can be removed without
interrupting traffic. To install a power supply unit, use the following procedure.
CAUTION: Remove the power cable from the modules prior to removing the
module itself. Power must not be connected prior to insertion in the chassis.
WARNING: Prevent exposure and contact with hazardous voltages. Do not
attempt to operate this system with the safety cover removed.
CAUTION: The DC power supply comes with a 6-8inch cord with a snap-in
plug that attaches to the DC power supply and screw terminals that attach to
the main power. Dell Force10 recommends using a longer cable, to ensure
sufficient room.
CAUTION: Note is that the power supply is marked + 48V - . Connect the +
(plus sign) to the red cable on the 6-8 inch cord; the - (minus sign) connects to
the black cable. BE SURE TO to connect the RED to RETURN and connect
the BLACK to -48V.
Power Supply 0 (PSU0) is on the left; Power Supply 1(PSU1) is on the right.
The power supply modules should slide into the slots smoothly. Do not force a
module into a slot. This may damage the power supply or the S4810 chassis.
10
Installing the Hardware