Installation guide

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Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Chapter 2 Preparing to Install
Making Power and Ground Connections
In an IGX 8430 node, the short cable goes from the Fan 2 connector of the upper PE-BC to the power
connectors on Fan Tray 2. One branch of the Y cable for Fan Tray 1 is significantly longer than the other
branch. The longer branch connects to the Fan 1 connector of the upper PE-BC. The shorter branch
connects to the “Fan 1” connector of the lower PE-BC.
To install the cooling unit assembly:
Step 1 Examine the front and back of the fan tray to become familiar with the setup. Note that, for the bottom
fan tray, the captive screws that secure the fan tray are in the front. For the booster fan tray, the captive
screws are at the back of the cabinet.
Step 2 Slide in the cooling unit and secure it by tightening the four rack screws.
Step 3 On the PE-BCs, plug each D-connector of the appropriate fan power cable into the appropriate PE-BC
connector.
Step 4 Plug the power connectors into the fan trays. At the power receptacles on each fan tray, the power
connector is a latched housing. Plug P1 into connector P1. Plug P2 into connector P2. Refer to
Figure 2-17.
Step 5 Attach the clamp for the fan power cord to the chassis.
Step 6 For lower fan tray installation, attach the air intake bezel.
Step 7 When power is turned on, make sure that all fans are running, and run the dsppwr command.
Making Power and Ground Connections
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit.
To see translations of this warning, refer to the Regulatory Compliance and Safety Information
document that accompanied this product.
This section contains information on making connections to AC and DC-powered systems.
Caution Remember that this is a positive ground system. Ensure that polarity of the DC input wiring is correct.
Under certain conditions, connections with reversed polarity might trip the primary circuit breaker and
damage the equipment.
Making the Frame Bonding (Ground) Connection
The Cisco cabinet comes with attached studs (with hardware for securing a ground conductor to the
studs) at the top and bottom of the cabinet for securing the grounding conductors. These studs are 1/4 in.
by 20 threads per inch. Figure 2-19 shows the Cisco cabinet with the ground attachment studs in the
upper and lower parts of the cabinet.
A standalone cabinet has provisions for mounting grounding conductors on the chassis by screws. In the
standalone cabinet, this provision is a pair of captive nuts (threaded holes) for the screws on the
mounting rail of the chassis (1/4 in. by 20 threads per inch). Figure 2-19 shows the location of the captive
nuts and screws in a standalone cabinet for securing in the ground attachments.