Cisco NCS 4201 Instruction Manual

Installing the Cisco NCS 4201
This chapter describes how to install the Cisco NCS 4201 and includes the following sections:
•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
Prerequisites
Before installing the Cisco NCS 4201, it is important to prepare for the installation by:
•Preparing the site (site planning) and reviewing the installation plans or method of procedures (MOP).
See Site Planning section.
•Unpacking and inspecting the Cisco NCS 4201. See Receiving the Chassis section.
•Gathering the tools and test equipment required to properly install the Cisco NCS 4201. See Tools and
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:
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Installing the Chassis Brackets
Figure 1: Z Rack Mounting Bracket
To install the brackets on the front of the chassis, perform these steps:
Step 1 Remove the rack-mount brackets from the accessory kit and position them beside the chassis.
Step 2 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.
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Installing the Cisco NCS 4201
Installing the Chassis Brackets

Installing the Chassis in the Rack
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.
Note
To install the chassis in the equipment rack, perform these steps:
Step 1 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
posts.
•If the rear of the chassis is at the front of the rack, insert the front of the chassis between the mounting posts.
Step 2 Align the mounting holes in the bracket with the mounting holes in the equipment rack.
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Installing the Cisco NCS 4201
Installing the Chassis in the Rack

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
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:
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Installing the Cisco NCS 4201
Attaching the Cable Guides

The cable bracket helps in routing the cables from all components on the front panel thereby enabling a proper
cable-bending radius.
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Installing the Cisco NCS 4201
Attaching the Cable Guides

To install the cable guides, perform these steps:
Step 1 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.
Step 2 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
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Installing the Cisco NCS 4201
Attaching the Cable Guides

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.
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Installing the Cisco NCS 4201
Installing and Removing the Front Door

Installing the Front Door
Step 1 Align the door with the cable bracket as shown in the figure below.
Step 2 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.
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Installing the Cisco NCS 4201
Installing the Front Door

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
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Installing the Cisco NCS 4201
Installing and Removing the Fan Tray

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.
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.
Caution
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Installing the Cisco NCS 4201
Removing the Fan Tray

To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after the fan
tray has been removed or replaced.
Caution
Follow these steps to remove and replace the fan tray on the Cisco NCS 4201:
Step 1 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.
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
Warning
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.
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.
Note
This completes the steps for removing the fan tray from the chassis.
To install a new fan tray, follow the steps in the Installing the Fan Tray section.
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Installing the Cisco NCS 4201
Removing the Fan Tray

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.
Read the installation instructions before connecting the system to the power source. Statement 1004Warning
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.
Note
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.
Caution
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
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
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.
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Installing the Cisco NCS 4201
Installing the Power Supply

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
Warning
The plug-socket combination must be accessible at all times, because it serves as the main disconnecting
device. Statement 1019
Warning
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
Warning
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
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
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.
•The system ground is the power supply and chassis ground.
•Do not connect the DC return wire to the system frame or to the system-grounding equipment.
•Use the grounding lug to attach a wrist strap for ESD protection during servicing.
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.
•The circuit breaker should be sized according to the power supply input rating and local or national code
requirements.
•The AC power receptacles used to plug in the chassis must be the grounding type. The grounding
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:
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Installing the Cisco NCS 4201
Installing a DC Power Supply

This equipment is suitable for installation in Network Telecommunications Facilities and locations where
the NEC applies. The equipment is suitable for installation as part of the Common Bonding Network
(CBN).
Note
The grounding architecture of this product is DC-isolated (DC-I) for DC-powered products. DC-powered
products have a nominal operating DC voltage of 48 VDC. Minimal steady state DC operating voltage is
19.2 VDC.
Caution
Installing a DC Power Supply Module
Open and remove the door before performing this procedure. See Removing the Front Door section.Note
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Installing the Cisco NCS 4201
Installing a DC Power Supply

Perform the following procedure to install a power supply module:
Step 1 Ensure that the system (earth) ground connection has been made. For ground connection installation instructions, see
the Installing the Chassis Ground Connection section.
Step 2 If present, remove the blank power supply filler plate from the chassis power supply bay opening by loosening the captive
installation screws.
Step 3 Verify that power to the DC circuit connected to the power supply you are installing is off. To ensure that power has
been removed from the DC circuits, locate the circuit breakers for the DC circuits, switch the circuit breakers to the OFF
position, and tape the circuit-breaker switches in the OFF position.
Step 4 Grasp the power supply metal tab with one hand. Place your other hand underneath the power supply. Slide the power
supply into the power supply bay as shown in figure below. Make sure that the power supply is fully seated in the bay.
Figure 10: Installing a DC Power Supply
Step 5 Tighten the captive installation screw of the power supply. The recommended maximum torque is 5.5 in.-lb (.62 N-m).
If you are installing a redundant DC power supply, repeat these steps for the second power source too.
Attaching Cables to the DC Power Supply
When installing DC power supply, use 14 AWG, 90°C wires. Always ensure that the building’s installation
for short-circuit (overcurrent) protection does not exceed 15A.
Note
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Installing the Cisco NCS 4201
Installing a DC Power Supply

To attach the DC power supplies:
Step 1 Open the DC power supply guard.
Step 2 Attach the DC supply wires in the designated screws. See figure below.
Figure 11: Connecting the DC Power Supply Wires
Step 3 Close the DC power supply guard.
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Installing the Cisco NCS 4201
Installing a DC Power Supply

Powering On the Chassis
After the chassis is either rack mounted or mounted on the wall, perform these tasks to complete the installation:
Step 1 Power on the chassis. See figure below.
Figure 12: Powering on the Chassis
power on/off switch1
Step 2 Connect the front-panel ports. See the Connecting to SFP Modules section to complete the installation.
Removing and Replacing a DC Power Supply
This section provides information about removing and replacing a DC power supply in the Cisco NCS 4201.
The Cisco NCS 4201 power supplies are hot-swappable. If you have installed redundant power supplies,
you can replace a single power supply without interrupting power to the chassis.
Note
To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after a power
supply has been removed or replaced.
Caution
When installing or replacing the unit, the ground connection must always be made first and disconnected
last. Statement 1046
Warning
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Installing the Cisco NCS 4201
Removing and Replacing a DC Power Supply

Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning
Installation of the equipment must comply with local and national electrical codes. Statement 1074Warning
Open and remove the door before performing this procedure. See Removing the Front Door section.Note
Follow these steps to remove and replace the DC power supply on the Cisco NCS 4201:
Step 1 Before servicing the power supply, switch off the circuit breaker in your equipment area. As an additional precaution,
tape the circuit-breaker switch in the Off position.
Step 2 Slip on the ESD-preventive wrist strap that was included in the accessory kit.
Step 3 Switch the power supply circuit-breaker switch to the Off (O) position.
Step 4 Pull the terminal block plug connector out of the terminal block head in the power supply.
Step 5 Loosen the captive screw on the DC power supply. See figure below.
Figure 13: Removing a DC Power Supply
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Installing the Cisco NCS 4201
Removing and Replacing a DC Power Supply

Do not use the captive installation screw to pull out the power supply.Caution
Step 6 Grasping the power supply handle with one hand, pull the power supply out from the chassis while supporting it with
the other hand.
Step 7 Replace the DC power supply within 5 minutes. See figure Installing a DC Power Supply. If the power supply bay is to
remain empty, install a blank filler plate (Cisco part number 800-39165-01) over the opening, and secure it with captive
installation screws.
Installing an AC power Supply
The following sections describe how to install an AC power supply in the Cisco NCS 4201:
This product requires short-circuit (over current) protection, to be provided as part of the building
installation. Install only in accordance with national and local wiring regulations. Statement 1045
Warning
Installing an AC Power Supply Module
Open and remove the door before performing this procedure. See Removing the Front Door section.Note
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Installing the Cisco NCS 4201
Installing an AC power Supply

Follow these steps to install an AC power supply module:
Step 1 Ensure that the system (earth) ground connection has been made. For ground connection installation instructions, see
the Installing the Chassis Ground Connection section.
Step 2 If necessary, remove the blank power supply filler plate from the chassis power supply bay opening, by loosening the
captive installation screws.
Step 3 Grasp the power supply handle with one hand. Place your other hand underneath the power supply, as shown in figure
below. Slide the power supply into the power supply bay. Make sure that the power supply is fully seated in the bay.
Figure 14: Installing the AC Power Supply
Step 4 Tighten the captive installation screw of the power supply. The recommended maximum torque is 5.5 in.-lb (.62 N-m).
Power supply captive installation screws must be tight to ensure protective grounding continuity. Statement
289
Warning
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Installing the Cisco NCS 4201
Installing an AC power Supply