Table Of Contents
Installing the Cisco SCE8000 Chassis
Introduction
Preparing for Installation
Safety
Site Requirements
Preventing Electrostatic Discharge Damage
Environmental Requirements
Power Requirements
Power Connection Guidelines
AC-Powered Systems
DC-Powered Systems
Site Planning Checklist
Installing the Cisco SCE8000 Chassis in the Rack
Unpacking the Cisco SCE8000 Chassis
Installation Guidelines
Required Tools
Installing the Chassis Brackets
Installing the Chassis in the Rack
Installing an Optical Bypass Module
Connecting the System Ground
Required Tools and Equipment
Installing the Power Supplies in the Cisco SCE8000 Chassis
Installing the Cisco SCE8000 Chassis
Revised: August 18, 2009, OL-16478-04
Introduction
This chapter describes how to install a Cisco SCE8000 chassis.
Warning 
Before you install, operate, or service the system, read the Regulatory Compliance and Safety Information for the Cisco SCE8000 Platform. This guide contains important safety information you should know before working with the system.
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units.
Warning The plug-socket combination must be accessible at all times because it serves as the main disconnecting device.
Warning This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security.
Warning There is the danger of explosion if the battery is replaced incorrectly. The battery is not a user-serviceable part.
Warning Class 1 laser product.
Warning Because invisible laser radiation may be emitted from the aperture of the port when no cable is connected, avoid exposure to laser radiation and do not stare into open apertures.
Warning Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place.
•Preparing for Installation
•Installing the Cisco SCE8000 Chassis in the Rack
•Connecting the System Ground
•Installing the Power Supplies in the Cisco SCE8000 Chassis
Preparing for Installation
•Safety
•Site Requirements
•Power Connection Guidelines
Safety
Warning This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available.
Warning Read the installation instructions before connecting the system to the power source.
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.
Site Requirements
This section provides site power requirements for the Cisco SCE8000 chassis. You should verify the site power prior to installation.
•Preventing Electrostatic Discharge Damage
•Environmental Requirements
•Power Requirements
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are improperly handled, results in complete or intermittent failures. Port adapters and blades consist of printed circuit boards that are fixed in metal carriers. Electromagnetic interference (EMI) shielding and connectors are integral components of the carrier. Although the metal carrier helps to protect the board from ESD, use a preventive antistatic strap during handling.
Following are guidelines for preventing ESD damage:
•Always use an ESD wrist or ankle strap and ensure that it makes good skin contact.
•Connect the equipment end of the strap to an unfinished chassis surface.
•When installing a component, use any available ejector levers or captive installation screws to properly seat the bus connectors in the backplane or midplane. These devices prevent accidental removal, provide proper grounding for the system, and help to ensure that bus connectors are properly seated.
•When removing a component, use any available ejector levers or captive installation screws to release the bus connectors from the backplane or midplane.
•Handle carriers by available handles or edges only; avoid touching the printed circuit boards or connectors.
•Place a removed component board-side-up on an antistatic surface or in a static shielding container. If you plan to return the component to the factory, immediately place it in a static shielding container.
•Avoid contact between the printed circuit boards and clothing. The wrist strap only protects components from ESD voltages on the body; ESD voltages on clothing can still cause damage.
•Never attempt to remove the printed circuit board from the metal carrier.
Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohm (Mohm).
Environmental Requirements
Ensure adequate spacing between racks using the information in the following table. Keep all of the vents clear of obstructions, including dust and foreign conductive material, and away from the exhaust ports of other equipment. Table 4-1 lists the chasis airflow requirements and Table 4-2 lists the SCE 8000 environmental requirements.
Table 4-1 Chassis Airflow Requirements
Airflow Intake
|
Airflow Exhaust
|
Air Filter Option
|
Minimum Clearance (walls)
|
Minimum Horizontal Separation
|
Right side
|
Left side
|
Not applicable
|
6 in (15 cm)
|
12 in (30.5)
|
Table 4-2 Ambient Temperature and Humidity Requirements for the Cisco SCE 8000
Specification
|
Acceptable Range
|
Temperature
|
Nominal: 32°F to 104°F (0°C to 40°C)
Storage: -4°F to 149°F (-20°C to 65°C)
|
Relative humidity
|
Operating: 10% to 85%
Storage: 5% to 95% (non-condensing)
|
Heat dissipation
|
•Single SCE8000-SCM-E module:
–AC Power: 950W / 3250 BTUs
–DC Power: 1000W / 3450 BTUs
•Dual SCE8000-SCM-E modules:
–AC Power: 1350W / 4600 BTUs
–DC Power: 1430W / 4880 BTUs
|
Power Requirements
Warning Read the installation instructions before connecting the system to the power source.
Follow these requirements when preparing your site for the Cisco SCE8000 installation:
•The redundant power configuration provides a second, identical power supply to ensure that power to the chassis continues uninterrupted if one power supply fails or input power on one line fails.
•Connect each of the two power supplies to a separate input power source. If you fail to do this, your system might be susceptible to total power failure due to a fault in the external wiring or a tripped circuit breaker.
•To prevent a loss of input power, be sure 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 might use an uninterruptible power supply (UPS) to protect against power failures at your site. Avoid UPS types that use ferroresonant technology. These UPS types can become unstable with systems like the Cisco SCE8000, which can have substantial current draw fluctuations due to bursty data traffic patterns.
Power Connection Guidelines
This section provides the guidelines for connecting the Cisco SCE8000 AC and DC power supplies to the site power source.
•AC-Powered Systems
•DC-Powered Systems
•Site Planning Checklist
AC-Powered Systems
•Each chassis power supply should have its own dedicated branch circuit.
•The circuit must be protected by a dedicated two-pole circuit breaker.
For North America, the circuit breaker should be rated at 20A.
For everywhere else, 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.
Warning Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available.
Warning The plug-socket combination must be accessible at all times because it serves as the main disconnecting device.
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.
Table 4-3 lists the Cisco SCE 8000 AC power specifications.
Table 4-3 Cisco SCE 8000 AC Power Specifications
Specification
|
Acceptable Range
|
PWR-2700-AC/4 minimum capability
|
1350W output (1650W input)
|
AC-input power consumption
|
•Single SCE8000-SCM-E module:
950W (8A @ 120VAC, 4.4A @ 220VAC
•Dual SCE8000-SCM-E modules:
1350W (11.25A @ 120VAC, 6.25A @ 220VAC)
|
AC-input voltage rating
|
Low-line (120 VAC nominal)-85 VAC (min) to 132 VAC (max)
High-line (230 VAC nominal)-170 VAC (min) to 264 VAC (max)
|
AC-input current rating
|
16 A maximum at 120 VAC
16 A maximum at 230 VAC
|
AC-fusing requirements
|
For North America, the circuit breaker should be rated at 20A.
For everywhere else, the circuit breaker should be sized according to the input current rating and local or national code requirements.
|
AC-input frequency rating
|
50/60 Hz (nominal) (±3% for full range)
|
Table 4-4 lists the AC-input power cord options, specifications, and Cisco product numbers for the 2700 W AC-input power supplies. It also references power cord illustrations.
Table 4-4 AC-Input Power Cord Options
Locale
|
Part Number
|
Length
|
Plug Rating
|
Power Cord Reference Illustration
|
North America (locking)
|
CAB-GSR16-US(=)
|
14 feet (4.3m)
|
250VAC, 20A
|
Figure 4-1
|
Europe
|
CAB-GSR16-EU(=)
|
14 feet (4.3m)
|
250VAC, 16A
|
Figure 4-1
|
International
|
CAB-AC16A-90L-IN(=)
|
14 feet (4.3m)
|
250VAC, 16A
|
Figure 4-1
|
China
|
CAB-AC16A-CH=
|
14 feet (4.3 m)
|
250VAC, 16A
|
Figure 4-2
|
Continental Europe
|
CAB-AC-2500W-EU=
|
14 feet (4.3 m)
|
250VAC, 16A
|
Figure 4-3
|
International
|
CAB-AC-2500W-INT=
|
14 feet (4.3 m)
|
250VAC, 16A
|
Figure 4-4
|
Israel
|
CAB-AC-2500W-ISRL=
|
14 feet (4.3 m)
|
250VAC, 16A
|
Figure 4-5
|
Japan, North America (nonlocking plug) 200-240VAC operation
|
CAB-AC-2500W-US1=
|
14 feet (4.3 m)
|
250VAC, 16A
|
Figure 4-6
|
Japan, North America (locking plug) 200-240VAC operation
|
CAB-AC-C6K-TWLK=
|
14 feet (4.3 m)
|
250VAC, 16A
|
Figure 4-7
|
Japan, North America 100-120VAC operation1
|
CAB-7513AC=
|
14 feet (4.3 m)
|
125VAC, 20A
|
Figure 4-8
|
South Africa
|
CAB-7513ACSA=
|
14 feet (4.3 m)
|
250VAC, 16A
|
Figure 4-9
|
Switzerland
|
CAB-ACS-16=
|
14 feet (4.3 m)
|
250VAC, 16A
|
Figure 4-10
|
Australia, New Zealand
|
CAB-AC-16A-AUS=
|
14 feet (4.3 m)
|
250VAC, 16A
|
Figure 4-11
|
Power Distribution Unit (PDU(=)*
|
CAB-C19-CBN
|
14 feet (4.3 m)
|
250VAC, 16A
|
Figure 4-12
|
*The PDU power cable is designed for users who power their switch from a PDU. The end of the cable that plugs into the Cisco SCE8000 chassis has a C19 connector; the other end of the cable that plugs into the PDU has a C20 connector.
AC Power Cord Illustrations
This section contains the AC power cord illustrations.
Figure 4-1 AC Power Cord Plugs and Appliance Coupler for the 2700 W Power Supply
Figure 4-2 CAB-AC16A-CH=
Figure 4-3 CAB-AC-2500W-EU=
Figure 4-4 CAB-AC-2500W-INT=
Figure 4-5 CAB-AC-2500W-ISRL=
Figure 4-6 CAB-AC-2500W-US1=
Figure 4-7 CAB-AC-C6K-TWLK=
Figure 4-8 CAB-7513AC=
Figure 4-9 CAB-7513ACSA=
Figure 4-10 CAB-ACS-16=
Figure 4-11 CAB-AC-16A-AUS
Figure 4-12 CAB-C19-CBN
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, IEC 60950 standards.
•The DC supplies each have the provision for a dual connection to the power source in order to permit high-power operation without exceeding current ratings. For the SCE8000, it is not necessary to connect both of these inputs to DC power sources; it is sufficient to connect only the '1' connections.
•Each 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.
Caution Do not connect the DC-return wire to the system frame or to the system grounding equipment.
Table 4-5 lists the Cisco SCE 8000 DC power specifications.
Table 4-5 Cisco SCE 8000 DC Power Supply Specification
Specification
|
Acceptable Range
|
PWR-2700-DC/4 minimum capability
|
1350W output (1750W input)
|
DC-input power consumption
|
•Single SCE8000-SCM-E module:
1000W (21A @ 48VDC, 17A @ 60VDC)
•Dual SCE8000-SCM-E modules:
1430W (30A @ 48VDC, 24A @ 60VDC)
|
DC-input voltage rating
|
-48 VDC to -40VDC
(operating range: -40.5 VDC to -72 VDC)
|
DC-input current rating
|
45 A maximum at 120 VAC
|
DC-input cable
|
Accepts 2-14 AWG copper conductors. Actual size of the wire needed is determined by the installer or local electrician.
Terminal block material rated at 150°C.
|
DC-input circuit breaker
|
For multiple DC input power supplies, each DC input must be protected by a dedicated two-pole circuit breaker or a fuse.
The circuit breaker or the fuse must be sized according to the power supply input power rating and any local or national electrical code requirements.
|
Note The DC supplies each have the provision for a dual connection to the power source in order to permit high-power operation without exceeding current ratings. For the SCE 8000, it is not necessary to connect both of these inputs to DC power sources; it is sufficient to connect only the '1' connections.
Site Planning Checklist
Table 4-6 lists the site planning activities that you should perform prior to installing the Cisco SCE8000 chassis. Completing each activity helps ensure a successful installation.
Table 4-6 Site Planning Checklist
Task No.
|
Planning Activity
|
Verified By
|
Time
|
Date
|
1
|
Space evaluation:
•Space and layout
•Floor covering
•Impact and vibration
•Lighting
•Maintenance access
|
|
|
|
2
|
Environmental evaluation:
•Ambient temperature
•Humidity
•Altitude
•Atmospheric contamination
•Airflow
|
|
|
|
3
|
Power evaluation:
•Input power type
•Power receptacles
•Receptacle proximity to the equipment
•Dedicated (separate) circuits for redundant power supplies
•UPS for power failures
DC systems: Proper gauge wire and lugs
|
|
|
|
4
|
Grounding evaluation:
•Circuit breaker size
•CO ground (AC- and DC-powered systems)
|
|
|
|
5
|
Cable and interface equipment evaluation:
•Cable type
•Connector type
•Cable distance limitations
|
|
|
|
6
|
EMI evaluation:
•Distance limitations for signaling
•Site wiring
•RFI levels
|
|
|
|
Installing the Cisco SCE8000 Chassis in the Rack
This section describes how to install a Cisco SCE8000 platform in a rack. For first-time installations, perform the procedures in the following sections in the order listed:
•Unpacking the Cisco SCE8000 Chassis
•Installation Guidelines
•Required Tools
•Installing the Chassis Brackets
•Installing the Chassis in the Rack
•Installing an Optical Bypass Module
Note Before starting the installation procedures in this chapter, see the Site Planning Checklistsection to verify that all site planning activities were completed.
Unpacking the Cisco SCE8000 Chassis
Tip Do not discard the shipping container when you unpack the Cisco SCE8000. Flatten the shipping cartons and store them with the pallet. You will need these containers if you need to move or ship the Cisco SCE8000 in the future.
Perform the following to check the contents of the shipping container:
•Check the contents of the accessories kit against the list of accessories in the Cisco SCE8000 Component List, page 2-15 and the packing slip. Verify that you received all listed equipment, which should include the following:
–Hardware and software documentation, if ordered
–Optional equipment that you ordered, such as network interface cables, transceivers, or special connectors
•Check the modules in each slot. Ensure that the configuration matches the packing list and that all the specified interfaces are included.
Installation Guidelines
Before installing the chassis, ensure that the equipment rack complies with the following guidelines:
•The width of the rack, measured between the two front mounting strips or rails, must be 17.75 inches (45.09 cm)
•The depth of the rack, measured between the front and rear mounting strips, must be at least 19.25 inches (48.9 cm) but not more than 32 inches (81.3 cm)
•The rack must have sufficient vertical clearance to insert the chassis. The height of the Cisco SCE8000 chassis is 8.7 inches (22.09 cm) (5 RU).
If the rack is on wheels, ensure that the brakes are engaged or that the rack is otherwise stabilized.
Note We recommend that you maintain a minimum air space of 6 inches (15 cm) between walls and the chassis air vents and a minimum horizontal separation of 12 inches (30.5 cm) between two chassis to prevent overheating.
The installation hardware is not suitable for use with racks with obstructions (such as a power strip) that could impair access to field-replaceable units (FRUs).
Note To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:
•This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
•When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack.
•If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack.
Required Tools
These tools and equipment are required to install the chassis in the rack:
•Number 1 and number 2 Phillips-head screwdrivers
•3/16-inch flat-blade screwdriver
•Tape measure and level
•Masking tape or some other method of marking the desired installation height in the rack
Installing the Chassis Brackets
The chassis is shipped with the mounting brackets installed on the front of the chassis. These brackets can be installed on the rear of the chassis.
To install the brackets on the rear of the chassis, perform these steps:
Step 1 Remove the screws that secure the brackets to the chassis (Figure 4-13).
Figure 4-13 Brackets on Cisco SCE8000 Chassis
Step 2 Position one of the brackets against the chassis side, and align the screw holes.
Step 3 Secure the bracket to the chassis with the screws removed in Step 1.
Step 4 Repeat Steps 2 and 3 for the other bracket.
Installing the Chassis in the Rack
Caution To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the handles on modules (such as power supplies, fans, or cards); these types of handles are not designed to support the weight of the unit. Lift the unit only by grasping the chassis underneath its lower edge.
To install the Cisco SCE8000 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 (and optional cable guide) with the mounting holes in the equipment rack (Figure 4-14).
Step 3 Use a tape measure and level to choose and mark the position that the chassis is to be installed in the rack. Make a mark at equal height on both sides of the rack. This will help ensure that the chassis will be installed straight and level.
Figure 4-14 Installing the Cisco SCE8000 Chassis in the Rack
Step 4 Install the eight (four per side) 12-24 x 3/4-inch or 10-32 x 3/4-inch screws through the holes in the bracket and into the threaded holes in the equipment rack posts.
Step 5 Use a tape measure and level to verify that the chassis is installed straight and level.
Installing an Optical Bypass Module
There are two installation options for the external bypass modules:
•Chassis mount panel—This panel is mounted on slot #4 of the SCE8000 chassis. It hosts two optical bypass modules, which will serve the two traffic links supported by one Cisco SCE8000 chassis.
•External mounting panel—This panel can be mounted in any 19" rack. It hosts up to four optical bypass modules, which will serve the four traffic links supported by two Cisco SCE8000 platforms.
Step 1 For external mounting, install the external mounting panel in the 19" rack. Screw the mounting panel to the rack using four 3/4-inch screws, two on each side, through the holes in the mounting panel and into the threaded holes in the rack posts.
For internal mounting, the SCE8000 chassis will be shipped with the chassis mounting panel already installed in slot #4.
Step 2 Remove the module filler plate covering the subslot in the mounting panel by loosening the two screws.
Step 3 Carefully insert the optical bypass module into the subslot (there are no guide rails) and tighten the captive screws on either side of the module (Figure 4-15).
Figure 4-15 Optical Bypass Modules in External Mounting Panel
Connecting the System Ground
This section describes how to connect a system (earth) ground to the Cisco SCE8000 chassis.
Two threaded M4 holes are provided on the chassis frame to attach the ground cable.
Warning You must connect the system ground on both AC- and DC-powered systems to an earth ground if this equipment is installed in a US or European Central Office.
Warning For DC-powered systems, the system ground is also the power supply ground. The DC ground must be installed with a permanent connection to an earth ground according to NEC guidelines.
Warning You must complete this procedure before connecting system power or turning on the Cisco SCE8000 chassis.
Required Tools and Equipment
To connect the system ground, you need the following tools and materials:
•One grounding lug.
•Two M4 (metric) hex-head screws with locking washers.
Note The grounding lug and M4 hex-head screws with locking washers are provided in kit 69-0815-01.
•One grounding wire.
The grounding wire must be sized according to local and national installation requirements. Depending on the power supply and system, a 12 AWG conductor or larger size wire is required for U.S. installations.
•Number 2 Phillips-head screwdriver.
•Crimping tool (must be large enough to accommodate the girth of the grounding lug when crimping the grounding cable into the lug).
•Wire-stripping tool.
Step 1 Use a wire-stripping tool to remove approximately 0.75 inch (19 mm) of the covering from the end of the grounding wire.
Step 2 Insert the stripped end of the grounding wire into the open end of the grounding lug.
Step 3 Use the manufacturer recommended crimping tool to secure the grounding wire in place in the grounding lug.
Step 4 Locate and remove the adhesive label from the system grounding pad on the chassis (Figure 4-16).
Figure 4-16 Installing the System Ground
Step 5 Place the grounding wire lug against the grounding pad, making sure there is solid metal-to-metal contact.
Step 6 Secure the grounding lug to the chassis with two M4 screws. Ensure that the grounding lug will not interfere with other hardware or rack equipment.
Step 7 Prepare the other end of the grounding wire, and connect it to an appropriate grounding point in your site to ensure adequate earth ground for the Cisco SCE8000 chassis.
Installing the Power Supplies in the Cisco SCE8000 Chassis
The SCE8000 chassis is shipped with the power supplies (AC or DC) already installed. Should it be necessary to install a power supply module, refer to Removing and Replacing the Power Supply, page 9-3.
