Cisco NCS 4201 Installing Manual

Installing the Cisco NCS 4201

This chapter describes how to install the Cisco NCS 4201 and includes the following sections:

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Prerequisites

Before installing the Cisco NCS 4201, it is important to prepare for the installation by:

Prerequisites, page 1

Installing the Chassis in a Rack, page 1

Installing and Removing the Front Door, page 7

Installing and Removing the Fan Tray, page 9

Installing the Power Supply, page 12

Installing and Removing SFP Modules, page 24

Installing the Chassis Ground Connection, page 29

Connecting a Chassis to the Network, page 34

Preparing the site (site planning) and reviewing the installation plans or method of procedures (MOP).

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See Site Planning section.

Unpacking and inspecting the Cisco NCS 4201. See Receiving the Chassis section.

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Gathering the tools and test equipment required to properly install the Cisco NCS 4201. See Tools and

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Equipment section.

For more instructions on how to prepare for the installation of the Cisco NCS 4201, see Preparing for Installation chapter.

Installing the Chassis in a Rack

The procedures in this section apply to both horizontal and vertical mounting of the chassis in a rack:

Cisco NCS 4201 Hardware Installation Guide

Installing the Chassis Brackets

Figure 1: Z Rack Mounting Bracket

To install the brackets on the front of the chassis, perform these steps:

Installing the Cisco NCS 4201

Step 1 Step 2

Remove the rack-mount brackets from the accessory kit and position them beside the chassis.

Position one of the brackets against the chassis side, and align the screw holes.The figure below shows how to attach the brackets on the Cisco NCS 4201 for a 23-inch rack.

Figure 2: Attaching Mounting Brackets to Cisco NCS 4201 for a 23-inch Rack (Front Z-bracket))

Step 3

Secure the bracket to the chassis with the screws removed when performing Step 1. The recommended maximum torque is 10 in.-lb.

Step 4

Repeat Step 3 and Step 3 for the other bracket.

Cisco NCS 4201 Hardware Installation Guide

Installing the Cisco NCS 4201

Installing the Chassis in the Rack

Step 1

Step 2

Note

Ensure adequate air flow when mounting the chassis in a rack. For more information, see the Air Flow

Guidelines section.

Note

Install the cable guides before installing the Cisco NCS 4201 on the rack. See Attaching the Cable Guides section.

To install the chassis in the equipment rack, perform these steps:

Position the chassis in the rack as follows:

If the front of the chassis (front panel) is at the front of the rack, insert the rear of the chassis between the mounting

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posts.

If the rear of the chassis is at the front of the rack, insert the front of the chassis between the mounting posts.

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Align the mounting holes in the bracket with the mounting holes in the equipment rack.

Cisco NCS 4201 Hardware Installation Guide

Attaching the Cable Guides

The following figure shows how to install the Cisco NCS 4201 in a 23-inch EIA rack.

Figure 3: Installing the Cisco NCS 4201 in a 23-inch EIA Rack

Installing the Cisco NCS 4201

Step 3

Install the four M6x12mm zinc-plated steel screws through the holes in the bracket and into the threaded holes in the equipment rack posts.

Step 4

Use a tape measure and level to verify that the chassis is installed straight and level.

Attaching the Cable Guides

You can guide the cables on the Cisco NCS 4201 through the cable bracket:

Cisco NCS 4201 Hardware Installation Guide

Installing the Cisco NCS 4201

The cable bracket helps in routing the cables from all components on the front panel thereby enabling a proper cable-bending radius.

Attaching the Cable Guides

Cisco NCS 4201 Hardware Installation Guide

Attaching the Cable Guides

To install the cable guides, perform these steps:

Installing the Cisco NCS 4201

Step 1

Step 2

Position the cable brackets (left and right) against the side of the chassis and align the four screw holes, as shown in figure below using standard kit.

Secure the cable brackets with the four M6x12mm screws supplied with the cable kit. The recommended maximum torque is 3N-m.

Figure 4: Installing the Cable Brackets on Cisco NCS 4201 (As Per the Standard Kit)

Figure 5: Guiding the Cables from the Front Panel through the Cable Brackets

Cisco NCS 4201 Hardware Installation Guide

Installing the Cisco NCS 4201

Installing and Removing the Front Door

The front door provides additional space in front of the Cisco NCS 4201 to accommodate cables. You can remove the door to provide unrestricted access to the front of the chassis.

Cisco NCS 4201 Hardware Installation Guide

Installing the Front Door

Installing the Cisco NCS 4201

Step 1 Step 2

Align the door with the cable bracket as shown in the figure below.

Tighten the screws on both sides on the top and bottom.

Figure 6: Installing the Front Door

Removing the Front Door

The door is attached to the cable bracket through screws on both sides on the top and bottom. Loosen the screws on the top left and right corners of the door.

Cisco NCS 4201 Hardware Installation Guide

Installing the Cisco NCS 4201

The door falls outwards, hinged to the cable bracket.

Figure 7: Removing the Front Door

Installing and Removing the Fan Tray

The following sections describe the installation and removal of fan tray on the Cisco NCS 4201:

Installing the Fan Tray

The fan tray is a modular unit that provides cooling to the Cisco NCS 4201. Follow these steps to install the fan tray in the chassis:

Step 1

Guide the fan tray into the chassis until it is fully seated. The figure below show how to orient the fan tray for Cisco NCS 4201.

Keep your fingers, clothing, and jewelry away from the fans. Always handle the fan tray by the handle.Caution

Cisco NCS 4201 Hardware Installation Guide

Removing the Fan Tray

Installing the Cisco NCS 4201

Step 2

Secure the fan tray to the chassis using the attached captive installation screws. The recommended maximum torque is

5.5 in.-lb (.62 N-m).

Figure 8: Installing the Fan Tray on Cisco NCS 4201

This completes the procedure for installing or replacing the fan tray in a Cisco NCS 4201.

For more information about air flow guidelines, see the Air Flow Guidelines section.

Removing the Fan Tray

The fan tray supports online insertion and removal (OIR). There is no need to power down the Cisco NCS 4201 to remove or replace the fan tray. However, the chassis will shut down if the fan tray is removed from the chassis for more than five minutes.

Caution

The chassis can stay active for up to 5 minutes if the temperature is below the ambient limit. However, in the event of an overtemperature alarm, the chassis can shut down in less than 5 minutes. In the event of a critical temperature alarm, the chassis shuts down immediately.

Cisco NCS 4201 Hardware Installation Guide

Installing the Cisco NCS 4201

Removing the Fan Tray

Step 1

Caution

To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after the fan tray has been removed or replaced.

Follow these steps to remove and replace the fan tray on the Cisco NCS 4201:

Using a No. 2 Phillips screwdriver or your fingers, loosen the captive installation screws that secures the fan tray to the chassis. The figure below shows the front of the Cisco NCS 4201 fan tray, including the captive installation screws.

Figure 9: Removing the Fan Tray From Cisco NCS 4201

Keep your fingers, clothing, and jewelry away from the fans. Always handle the fan tray by the handle.Caution

Step 2

Pull the fan tray towards you, no more than 1 inch, to disengage it from the power receptacle on the midplane.

Warning

The fans might still be turning when you remove the fan assembly from the chassis. Keep fingers, screwdrivers, and other objects away from the openings in the fan assembly’s housing. Statement 263

Step 3

Wait at least 5 seconds to allow the fans to stop spinning. Then, pull the fan tray backward towards you and out of the chassis.

Note

This completes the steps for removing the fan tray from the chassis.

As the fan tray slides out of the chassis, support the bottom of the fan tray with one hand and keep your other hand on the fan tray.

To install a new fan tray, follow the steps in the Installing the Fan Tray section.

Cisco NCS 4201 Hardware Installation Guide

Installing the Power Supply

The Cisco NCS 4201 provides the choice of two different power supplies:

• DC power—-48 V/60 Vdc or 24 Vdc

The DC power supply uses 2 position terminal block-style connector. The terminal block connector is of suitable size to carry the appropriate AWG wire size to handle the input current of the power supply. ON/OFF switch is provided.

• AC power—100 VAC to 240 VAC

The AC power supply has an IEC 320-type power receptacle and a 15-A service connector. You can use standard straight power cords with the AC power supply. The power supply includes a power cord retainer clip that can only accept straight power cords. No ON/OFF switch is provided.

Each power supply provides a single primary input power connection. You can install dual-power supplies for redundancy.

Installing the Cisco NCS 4201

Read the installation instructions before connecting the system to the power source. Statement 1004Warning

Note

Caution

Products that have an AC power connection are required to have an external surge protective device (SPD) provided as part of the building installation to comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety.

Do not use interface module or power supply ejector handles to lift the chassis; using these handles to lift the chassis can deform or damage the handles.

The following sections provide more information on the Cisco NCS 4201 power supplies:

Preventing Power Loss

Use the following guidelines to prevent power loss to the chassis:

To prevent loss of input power, ensure that the total maximum load on each circuit supplying the power

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supplies is within the current ratings of the wiring and breakers.

In some systems, you can use an UPS to protect against power failures at your site. Avoid UPS types

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that use ferroresonant technology. These UPS types can become unstable with systems such as the Cisco NCS 4201, which can have substantial current-draw fluctuations due to bursty data traffic patterns.

Power Connection Guidelines

This section provides guidelines for connecting the Cisco NCS 4201 power supplies to the site power source.

Cisco NCS 4201 Hardware Installation Guide

Installing the Cisco NCS 4201

Installing a DC Power Supply

Warning

This equipment is intended to be grounded to comply with emission and immunity requirements. Ensure that the switch functional ground lug is connected to earth ground during normal use. Statement 1064

The plug-socket combination must be accessible at all times, because it serves as the main disconnecting device. Statement 1019

This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation. Install only in accordance with national and local wiring regulations. Statement 1045

Guidelines for DC-Powered Systems

Basic guidelines for DC-powered systems include the following:

Each chassis power supply should have its own dedicated input power source. The source must comply

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with the safety extra-low voltage (SELV) requirements in the UL 60950, CSA 60950, EN 60950, and IEC 60950 standards.

The circuit must be protected by a dedicated two-pole circuit breaker. The circuit breaker should be

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sized according to the power supply input rating and local or national code requirements.

The circuit breaker is considered the disconnect device and should be easily accessible.

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The system ground is the power supply and chassis ground.

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Do not connect the DC return wire to the system frame or to the system-grounding equipment.

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Use the grounding lug to attach a wrist strap for ESD protection during servicing.

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Guidelines for AC-Powered Systems

Basic guidelines for AC-powered systems include the following:

Each chassis power supply should have its own dedicated branch circuit.

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The circuit breaker should be sized according to the power supply input rating and local or national code

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requirements.

The AC power receptacles used to plug in the chassis must be the grounding type. The grounding

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conductors that connect to the receptacles should connect to protective earth ground at the service equipment.

Installing a DC Power Supply

The following sections describe how to install a DC power supply in the Cisco NCS 4201:

Cisco NCS 4201 Hardware Installation Guide

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Cisco NCS 4201 Installing Manual

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