Specifications

Installation and Start-up 7-19
Connecting Power for AC Systems
Figure7-13 AC Power Assembly Block Diagram
Each of the right three connectors of the group of four also provides a power supply status signal for
monitoring power supply performance by an MGX 8220 shelf. Each of these connectors provides a
status signal for a particular power supply as shown in the diagram.
The group of three connectors on the left of the rear panel supply status signals for any remaining
power supplies that may be configured in the assembly.
Perform the following steps to connect the power supplies. (Refer to Figure7-14 and Figure7-15.)
Step1 Using the special cables supplied with the power assembly, use one or two cables for each
shelf. Each shelf should use one cable from the right connectors and optionally one cable
from the left connectors. For each shelf connect one end of a cable to one of the right
connectors and one end of another cable to one of the left connectors.
Step2 The other end of the cable has a connector and a fixture for attaching to the power entry
aperture on the rear of the shelf. Insert each of the two cables into one of the power entry
apertures on the shelf and secure with the provided screws. The cable from the left side
of the power assembly is connected to the left power entry connector in the MGX 8220
shelf. Likewise, the cable from the right side of the power assembly is connected to the
right power entry connector in the MGX 8220 shelf.