Enclosure and Power Installation

Before you install the system, verify that all of the required parts are present and in good condition. If anything is missing or damaged, contact your sales representative.

IGX 8410 Enclosure

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For rack-mount systems, four permanent mounting brackets are present. Also, for installation purposes only, a pair of temporary mounting brackets and a temporary spacer bracket are present.

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The unit has the correct power type (AC or DC) and the factory-installed power entry back card (PE-BC). For DC-powered systems, DC power entry modules (PEMs) are installed in the PE-BC. For AC systems, check for the power supply tray, correct power cord, and correct number of supplies.

IGX 8420/8430 Enclosures

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[IGX 8420/8430 enclosures] The unit has the correct number of card cages (1 or 2).

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The unit has the correct power type (AC or DC) and the factory-installed power entry back cards (PE-BC), one per shelf. For DC-powered systems, DC PEMs are factory-installed in each PE-BC. For an AC system, check for the power supply tray and correct number of power supplies and cables.

Plug-In Cards

Make sure all purchased cards are present. Check the number and type of cards shipped against the number and type of card purchased. In the following list, the column on the left lists the front cards. The column on the right lists the possible corresponding back cards. Check off each card type as you inventory them.

An inventory list of the installed cards is shipped with the unit. The list includes each card's serial number, revision number, and slot number (serial and revision numbers are also found on the solder side of each card). Check for the presence of any other items on the shipping list. After verifying that the correct cards are present, tape a copy of the inventory list to the back of this manual.


—	Correct number and types of NPMs	—	One SCM
—	Correct number of NTMs	—	Correct number of BC-T1s Correct number of BC-E1s Correct number of BC-Y1s Correct number of BC-SRs
—	Correct number of UXM-Es	—	Correct number of BC-UAI-4-155-MMFs Correct number of BC-UAI-4-155-SMFs Correct number of BC-UAI-4-155-ELs Correct number of BC-UAI-2-155-SMFs Correct number of BC-UAI-6-T3s Correct number of BC-UAI-6-E3s Correct number of BC-UAI-3-T3s Correct number of BC-UAI-3-E3s Correct number of BC-UAI-8-T1-DB-15s Correct number of BC-UAI-8-E1-DB-15s Correct number of BC-UAI-8-E1-BNCs Correct number of BC-UAI-4-T1-DB-15s Correct number of BC-UAI-4-E1-DB-15s Correct number of BC-UAI-4-E1-BNC
—	Correct number and types of UVMs	—	Correct number of BC-UVI-2E1ECs Correct number of BC-UVI-2J1ECs Correct number of BC-UVI-2T1ECs
—	Correct number and types of CVMs	—	Correct number of BC-E1s Correct number of BC-J1s Correct number of BC-T1s
—	Correct number of UFM-Cs	—	Correct number of UFI-8T1-DB-15s Correct number of UFI-8E1-DB-15s Correct number of UFI-8E1-BNCs
—	Correct number of UFM-Us	—	Correct number of UFI-12-V35s Correct number of UFI-12-X21s Correct number of UFI-4-HSSIs
—	Correct number and types of FRMs (including FRM-2s)	—	Correct number of FRI-T1s Correct number of FRI-E1s Correct number of FRI-X.21s Correct number of FRI-V.35 Correct number of FRI-2-X.21s
—	Correct number of HDMs	—	Correct number of SDIs
—	Correct number of LDMs	—	Correct number of LDIs
—	Correct number of ARMs	—	Correct number of ARIs
—		—	Blank faceplates for unused back card slots

Site Preparation

The standalone IGX 8410 node requires a floor area 19.9 inches (50.5 cm) wide and at least
47 inches (180 cm.) deep. This depth allows for opening the front door. Sufficient clearance around the cabinet must also be provided for access to the front and back of the cabinet while the door is open. The rack-mount IGX 8410 node requires 24.44 inches of vertical space.

A standalone IGX 8420 or 8430 node requires a floor area 19.9 inches (50.5 cm) wide and at least 47 inches (119.4 cm) deep. This spacing lets you open the front door. Clearance around the cabinet must also allow access to the front and back of the cabinet while the door is open. The rack-mount IGX 16 requires 32 inches (81.3 cm) of vertical space. The rack-mount IGX 8430 node requires 55 inches (139.7 cm) of vertical space.

In a rack-mount system, the mounting rail pattern follows the EIA standard of 56 inches (or
32 rack-mount units). For displacement information for the IGX components and other components in the Cisco cabinet, refer to the appendix titled " ".

For AC power use, an AC power source must be available within 6 feet (1.8 m) of the IGX node. For systems using a DC source, Cisco does not supply the DC power cord, so the user or installer determines the cord length and the distance to the DC source. The wire should be 10-12 AWG or 4 square millimeters.

A fully loaded, AC-powered IGX 8410 node dissipates up to 3,500 BTUs (1 KW hour). A DC-powered IGX 8410 node can dissipate up to 2720 BTUs.

A fully loaded, AC-powered IGX 8420 node dissipates up to 4300 BTUs (1 KW hour). A DC-powered IGX 8420 can dissipate up to 3600 BTUs.

A fully loaded, AC-powered IGX 8430 node dissipates up to 8600 BTUs (1 KW hour). A DC-powered IGX 8430 node can dissipate up to 6800 BTUs.

A fully loaded IGX 8410 enclosure can weigh up to 173 lbs (79 Kgs). A fully loaded IGX 8420 enclosure can weigh up to 250 lbs (112.5 Kgs). A fully loaded IGX 8430 enclosure can weigh up to 500 lbs (225 Kgs).

Raised flooring with sufficient under-floor space to house the cables is recommended.

An IGX node is either mounted in a rack or free-standing (in a stand-alone cabinet). The location of the IGX node should accommodate the routing of the data cables and the termination of the telephone company's or common carrier's circuits.

The IGX 8410 node has one mounted wrist strap at the front and one at the back of the cabinet. Personnel with access to the IGX 8410 cards should put on a wrist strap before handling the cards. An IGX 8420/8430 node does not come with an attached wrist strap.

Seismic Considerations

To provide some protection against seismic activity, the feet and wheels of the IGX stand-alone cabinets can be removed to permit the cabinet to be bolted to a concrete floor or to a structural member in the floor.

In Cisco-supplied cabinets, provisions are available for seismic anchoring. Holes exist in the upper and lower corners for 3/8" or 1/2" bolts. Also, an optional stability plate can be purchased with the Cisco cabinet. The stability plate is bolted to the floor, then the Cisco cabinet is bolted to the stability plate. The " Seismic Anchoring for the Cisco Closed Rack" section contains instructions for installing the seismic stability plate.

Safety Requirements

The following paragraphs contain general safety information and information on telecommunications safety requirements.

General Requirements

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Correct alignment of connector pins with connectors is vitally important. Before you insert a card, make sure the pins are straight and the connectors on the card and the backplane align with each other. Insert the card gently.

•

For the IGX node and peripheral equipment to function safely and correctly, use only the power cords, cables, and connectors that are specified for the equipment, and make sure they are in good condition.

Power and Grounding

This section lists the requirements that relate to electrical power and grounding. These requirements cover installations at Central Office (CO) and Private Enterprise locations.

AC Power Circuit Breakers

For an AC-powered system, verify that the node's power comes from a dedicated AC branch circuit. The circuit must be protected by a dedicated, two-pole circuit breaker. The circuit breaker must have a rated current and trip delay that is greater than those of the IGX circuit breaker. Cisco Systems recommends the following:

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For IGX 8420 or IGX 8430 nodes, the site should have a 20A, 2-pole AC circuit breaker with a long trip-delay at each branch circuit.

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For IGX 8410 nodes, the site should have a 15A, 2-pole AC circuit breaker with a long trip-delay at each branch circuit.

The IGX 8420 and IGX 8430 nodes use a 20A, 2-pole circuit breaker for each AC input. The manufacturer of this circuit breaker is ETA, and the ETA part number for the circuit breaker is 8340-F120-P1P2-B2H020A. The IGX 8410 node uses a 15A, 2-pole AC circuit breaker on each input. This circuit breaker comes from either ETA (part number 8340-F120-P1P2-B2H015A) or Airpax (part number IEGH11-1-62-15.0-91V).

DC Power Circuit Breakers

For a DC-powered system, verify that the node's power comes from a dedicated DC branch circuit. The circuit must be protected by a dedicated circuit breaker. The circuit breaker must have a rated current and trip delay that is greater than those of the IGX circuit breaker. Cisco Systems recommends the site have a dedicated 25A, 1-pole circuit breaker with a medium trip delay at each branch circuit.

The DC-powered nodes use a 25A, 1-pole circuit breaker with a short trip delay on each -48V input. The manufacturer of this circuit breaker is ETA, and the ETA part number is 8340F110P1K1A2H00025.

Electrical Power for AC Units

An AC power source must be available within 6 feet (1.8 m) of the system and easily accessible. Before turning on the power, verify that the power supplied to the node comes from a dedicated branch circuit.

The power receptacles to which the node connects must be of the grounding type. The grounding conductors that connect to the receptacles should connect to protective earth at the service equipment.

Electrical Power for DC Units

Only an 48 VDC supply that complies with the Safety Extra Low Voltage (SELV) requirements of EN 60950 can connect to the IGX DC input.

For DC supply connections, consult local and/or national codes for proper conductor sizing. The conductors must be suitable for 20 Amps. Wiring that is 10 to 12 AWG (4 sq. mm) is adequate.

Bonding and Grounding

To maintain the full EMI and EMC integrity of this equipment, it must be bonded to an Integrated Ground Plane or an Isolated Ground Plane network. The purpose of this is to mitigate the damaging effects to equipment from Electrostatic Discharge and Lightning. Refer to the latest edition of ITU Recommendation K.27 or Bellcore GR-1089-CORE requirements to ensure that the correct Bonding and Grounding procedures are followed. As recommended in these documents, a frame bonding connection is provided on the Cisco-supplied cabinet for rack-mounted systems and on the stand-alone cabinets.

Except for the AC power supply module, every module in a rack-mount system relies on the rack itself for grounding. Therefore, the rack must be properly connected to protective earth before operating the system.

A DC-powered IGX node must have grounding conductors that connect at two separate locations, as follows:

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The grounding conductor provided with the supply source must connect to the correct terminal of the power entry module (PEM). The " DC Power Connections" section in this chapter describes how to make this connection.

•

A grounding conductor as described in the first paragraph of this section (" Bonding and Grounding") must connect to the appropriate terminal of a rack assembly or to the chassis of an IGX node.

Telecommunications Requirements

The telecommunications requirements might be relevant to a private network connected to the public, switched networks in some international service areas.

•

The following port types on the IGX node are approved to carry public-switched, non-voice traffic (OTR001, issue 3, port types 2DN):

•

The following port type on the IGX node is approved to carry PSTN digitized voice traffic:

Note

Cables must be attached so that their securing bolts are tightened requiring a screwdriver for removal.

FCC Requirements

The following tables represent the legal minimum immunity requirements for ITE products to be sold into Europe after August 2001.

Table 2-1 Emission Requirements: EN55022 (1998) EN55024 (1998)
Test	Applied to	Level	Immunity Criteria	Specification	Year	Comments
Radiated Emissions	Enclosure	Class A/Class B	A	EN55022	1998	Class A (other areas) Class B (Residential/Home)
Conducted Emissions	AC Line	Class A/Class B	A	EN55022	1998	Class A (other areas) Class B (Residential/Home)
Conducted Emissions	Signal Line	Class A/Class B	A	EN55022	1998	Class A (other areas) Class B (Residential/Home)
Conducted Immunity (CW)	Mains Ports	3V 1kHz 80% AM 0.15MHz-80MHz	A	EN61000-4-6	1996	Spot frequency tests at 0.2, 1.2, 7.1, 13.56, 21, 27.12, and 68MHz
Conducted Immunity (CW)	DC Ports	3V 1kHz 80% AM 0.15MHz-80MHz	A	EN61000-4-6	1996	Spot frequency tests at 0.2, 1.2, 7.1, 13.56, 21, 27.12, and 68MHz. Not applicable to equipment marketed with an external power convertor. Not applicable to DC lines within signal cables.
Conducted Immunity (CW)	Signal Lines (all)	3V 1kHz 80% AM 0.15MHz-80MHz	A	EN61000-4-6	1996	Spot frequency tests at 0.2, 1.2, 7.1, 13.56, 21, 27.12, and 68MHz. Apply to lines supporting comms on cables >3m.
Electrical Fast/Burst Transients	Mains Ports	1000V (peak) 5 kHz Rep. freq.	B	EN61000-4-4	1995
Electrical Fast/Burst Transients	DC Ports	500V (peak) 5 kHz Rep. freq.	B	EN61000-4-4	1995	Not applicable to equipment marketed with an external power converter. Not applicable to DC lines within signal cables.
Electrical Fast/Burst Transients	Signal Lines (all)	500V (peak) 5 kHz Rep. freq.	B	EN61000-4-4	1995	Apply to lines supporting comms on cables >3m.
Electro Static Discharge ESD	Enclosure	4kV contact 8kV Air	B	EN61000-4-2	1995	Based upon IEC801-2 (1991). Need to apply at least 200 discharges.
Power Frequency Magnetic Field	Enclosure	3A/m at 50Hz	A	EN61000-4-8	1994	Must contain devices susceptibility to H-fields: VDUs, Microphones. VDU interference allowed above 1 A/m.
Radiated Electric Field Immunity	Enclosure	3V 1kHz 80% AM 80MHz-1000MHz	A	EN61000-4-3	1996	Spot frequency tests at 80, 100, 120, 160, 230, 434, 460, 600, 863, 900 MHz.
Surges Line to earth	Signal Lines excluding primary protection	1500V 1.2/50 (8/20)	R	CCITT K series		Apply lines which will leave buildings: ISDN, telephone lines. Apply this level if the port does not include primary protection.
Surges Line to earth	Signal Lines including primary protection	4000V 1.2/50 (8/20)	R	CCITT K series		Apply lines which will leave buildings: ISDN, telephone lines. Apply this level if the port includes primary protection.
Surges Line to earth	DC Ports	500V 1.2/50 (8/20)	B	EN61000-4-5	1995	Not applicable to equipment marketed with an external power convertor. Not applicable to DC lines within signal cables.
Surges Line to earth	Mains Ports	1000V 1.2/50 (8/20)	B	EN61000-4-5	1995
Voltage Interruptions/ Dips	Mains Ports	30% reduction for 500ms	C	EN61000-4-11	1995
Voltage Interruptions/ Dips	Mains Ports	95% reduction for 5000ms	C	EN61000-4-11	1995
Voltage Interruptions/ Dips	Mains Ports	95% reduction for 10ms	B	EN61000-4-11	1995

Seismic Anchoring for the Cisco Closed Rack

This section describes installing the Cisco-supplied cabinet with the optional stability plate for seismic anchoring. If the stability plate is not present, go to the applicable section that describes how to set up an enclosure. The sections immediately follow and are titled " IGX 8410 Enclosure Installation" and " IGX 8420/8430 Enclosure Installation."

Step 1

Use the dimensions in to drill the holes for installing the stability plate.

Step 2

Remove the stability plate from the base of the Cisco cabinet. Save these nuts and bolts.

Step 3

With the user-provided anchoring bolts, attach the stability plate to the floor.

Step 5

Using the nuts and bolts from the shipping setup, secure the Cisco cabinet to the stability plate.

IGX 8410 Enclosure Installation

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Phillips screwdriver set, which must include a No. 1 size for front card installation

•

A variety of wrenches, possibly including an adjustable wrench or channel locks, for raising and lowering cabinet feet (for example, a Cisco cabinet requires a 1 3/8" wrench)

Stand-Alone System Installation

The installation steps consist of placing the stand-alone IGX 8410 node at its operating location, unpacking it, and verifying the integrity of the enclosure and power connections. Note that the cabinet is 19.9" wide.

After the system is at its operational location, follow the steps for connecting power. If the system has an AC power source, go to " AC Power Connections" section. If the system has a DC power source, go to the " DC Power Connections" section.

Rack-Mount Installation

The rack-mount IGX 8410 node fits in a 19 inch (48.25 cm.) rack with a minimum of 17.75 inches between rails. For mounting the chassis in a rack, brackets are attached to the front of the chassis. A pair of mounting brackets are attached at the back of the chassis after it is placed in the rack. Brackets for a mid-rack mounting also come with the kit.

To support the weight of the IGX 8410 node during installation, Cisco includes two temporary spacer brackets and a temporary mounting bracket. You remove these pieces after installation. The spacer brackets stabilizes the rack. Also, the temporary mounting bracket together with the spacer brackets creates a partial shelf onto which you can slide the node. These pieces support the system while you secure the permanent front and back mounting brackets to the rack.

Step 1

Decide on the position of the IGX 8410 node in the rack. See for external dimensions. Note that vertical spacing between the IGX 8410 node and other components (such as a BPX or MGX 8220) must be in the range .047"-.077" (0.119 cm-0.196 cm).

Step 2

At the front of the rack, attach the temporary spacer bracket and temporary mounting brackets so that the uppermost portion of these pieces are at the bottom of the intended location of the IGX 8410 node. shows a temporary spacer and mounting bracket in a Cisco-supplied cabinet.

Step 3

Position the IGX 8410 node in front of the cabinet. This position should be such that the back of the IGX card cage faces the front of the rack. If not already done, remove the foam strips from the sides, front, and back.

Step 4

Remove the attached mounting brackets (filler plates) for the stand-alone version. The mounting brackets for the rack-mount go in these places. See for the locations of the mounting brackets.

Step 6

This step requires one person on each side of the IGX card cage. Lift and slide the card cage into the rack at the front of the rack. Slide the IGX 8410 node to the back and rest the rear of the system on the temporary mounting brackets and spacer.

Step 7

Secure the front bracket (or mid-mount bracket) to the rack. The mid-mount brackets require the threaded rolling screws which the IGX 8410 kit includes. Attach the IGX 8410 node to the rack with eight #10-32 machine screws.

Step 10

If this is a DC-powered system, go to " DC Power Connections" section.

IGX 8420/8430 Enclosure Installation

Installing an IGX 8420 or IGX 8430 node requires the following tools and equipment:

•

Phillips screwdriver set, which must include a No. 1 size for front card installation (the No. 1 phillips comes on a combination tool that Cisco provides)

•

A variety of wrenches—possibly including an adjustable wrench or channel locks—for raising and lowering cabinet feet (for example, the Cisco-supplied cabinet requires a 1 3/8" wrench, and the stand-alone requires a 5/8" wrench)

•

5/32" Allen wrench for opening and closing the door latch (comes on a combination tool that Cisco provides)

Stand-Alone System Installation

Because Cisco stand-alone systems come with all components installed in the cabinet, the installation steps consist of placing the unit at its operational location, unpacking it, and verifying the structural and power connection integrity before turning on the power. Note that a stand-alone cabinet is 19.9" wide. The adjustable levelers require a 5/8" wrench. If the system has an AC power source, go to the " AC Power Connections"section. If the system has a DC power source, go to the " DC Power Connections" section.

IGX 8420 Rack Mount Installation

The rack-mount IGX 8420 node fits in a 19 inch (48.25 cm.) rack. The front of each assembly has flanges that serve as the front mounting brackets. The assembly kit contains other brackets for different mounting setups. The following order of component installation is the most convenient and efficient. For some of these components, separate sections follow with detailed installation steps.

Note that the vertical spacing between components, such as the card cage and fan tray, must be in the range .047"-.077" (0.119 cm-0.196 cm).

The miscellaneous parts kit for rack systems contains brackets for both a Cisco-supplied cabinet and a user-supplied rack. The kit includes mid-mount brackets for open racks.

The rear-mount brackets attach to the rear vertical rail in a Cisco-supplied cabinet. Each of these brackets has a horizontal flange upon which the back of each IGX component rests. The front of each assembly chassis has flanges that serve as the front mounting brackets.

Step 3

To install the cooling unit, do the steps in the " Installing the Cooling Unit" section later in this chapter.

Step 5

With one person on each side of the card cage, lift and slide it into the rack.

Step 6

Attach the cabinet to the rack with 8 #10-32 machine screws (from the kit).

IGX 8430 Rack-Mount Installation

The IGX 8430 is designed for mounting in a 19 inch (48.25 cm.) equipment rack. The following order of component installation is the most convenient and efficient. For some of these components, separate sections follow that contain detailed installation steps.

The miscellaneous parts kit contains brackets for rack-mounting in either a Cisco-supplied cabinet or a user-supplied rack. The kit includes mid-mount brackets for open racks. For a Cisco-supplied cabinet, the rear-mount brackets attach to the rear vertical rail. Each of these brackets has a horizontal flange upon which the back of an individual component rests. The front of each assembly chassis has flanges that serve as front mounting brackets.

Step 1

Refer to for component dimensions. Note that, although shows mid-mount and rear-mount brackets, these brackets are not normally used together.

Step 3

To install the cooling unit, complete the steps in the section titled " Installing the Cooling Unit" later in this chapter.

Step 5

Position the IGX card cage so the back of it faces the front of the cabinet.

Step 6

With one person on each side of the card cage, lift it into the rack. In a Cisco-supplied cabinet, rest the back of the card cage on the rear-bracket flange.

When mid-mount brackets are used, screw the card cage to the brackets with #10-32 machine screws from the miscellaneous parts kit.

Step 7

Secure the front of the card cage to the front of the rack with #10-32 machine screws from the miscellaneous parts kit.

Step 8

The folded ribbon cables that connect the upper and lower backplanes pass through a cut-out space in the card cages. The cables connect to two, 100-pin connectors on the front of each backplane. See . If NPM cards are present, these and possibly other front cards need removing prior to ribbon cable installation.

Connect the cable from the upper connector of the upper backplane to the upper connector in the lower backplane.

Connect the cable from the lower connector of the upper backplane to the lower connector in the lower backplane.

Step 9

A two-piece conduit called the card cage tunnel surrounds the ribbon cables and sits in the cut-out space of the card cages. Fit the pieces of the card cage tunnel around the ribbon cables and screw this unified piece into the cut-out space. shows the card cage tunnel in its normal location and prior to assembly.

Step 10

Slip the ribbon cables through the fastener clamps, then attach the fastener clamps (which include a self-adhesive base) to the side of the card cage. See .

Step 12

If this is a DC-powered system, go to the section titled " DC Power Connections," later in this chapter.

Installing AC Power

Two sections on AC power module installation follow. The immediately following sections describe AC power module installation for the IGX 8410 node, then the sections on the IGX 8420/8430 node follow.

AC Power in the IGX 8410 Node

For an IGX 8410 node to use an AC power source, an AC power supply system is necessary. The IGX 8410 power supply housing holds up to four, 400-Watt power supplies. The AC system provides the system with -48 VDC from 100 to 240 VAC input. The AC power supply housing is between the card cage and the side wall of the node. The IGX 8410 node has one or, with AC redundancy, two AC power inputs.

Two types of redundancy exist: power source redundancy, in case one AC circuit fails, and AC power supply redundancy, in case a supply fails. shows two AC inputs.

The minimum requirement for an AC-powered system is one AC source and one power supply. One supply is adequate for four cards unless you specify power supply redundancy. See for power supply requirements. shows the power supply slot designations and exterior.

shows a dual-input system. Facing the back of a dual-input system, AC Input A is on the left. AC Input B in on the right. In a dual-input system, the Input A supplies power supply slots A and B. Input B supplies power to slots C and D. A single AC input system does not have these distinctions: the single input receives AC power for supplies A-C.

Two types of redundancy exist in the AC-powered system. One redundancy is that of AC power inputs. A redundant AC power source from a building circuit that is independent of the other AC circuit provides backup if one AC circuit at the site fails. The other redundancy is that of the 400-Watt power supply modules. Redundancy of the 400-Watt power supplies provides a backup if a power supply fails.

In supporting single and dual AC inputs, power supply arrangements differ, as follows:

•

When a system uses two AC inputs, the number of supplies that receive power from AC Input A must be the same as the number of supplies that receive power from AC Input B. See .

•

When a system uses one AC source, the number of supplies must be installed in a contiguous arrangement, beginning with slot A, then slot B, and so on. Because only one AC input is present, the input connection has no alphanumeric designation.

shows the minimal 400-Watt unit requirements for different IGX 8410 configurations. The factors that determine the number of supplies are as follows:

In the System column shows the number of AC inputs. The Number of Cards column shows the number of cards at the cutoff point for more supplies. The Supply Redundancy column indicates whether the configuration includes a redundant supply for backup. For columns A through D, an X shows that the corresponding slot in the power supply housing must have a power supply to meet the configuration requirements. The part number for a power supply is IGX8410-PS-AC.

Installing the IGX 8420/8430 AC Power Supply Assembly

If the IGX 8420 or IGX 8430 node uses an AC power source, proceed with this section. In a rack-mount system, the AC Power Supply Assembly is shipped separately (as are all the other assemblies). The first assembly to install in a rack-mount system is the AC power supply assembly.

The AC power supply assembly for an IGX 8420 or IGX 8430 node consists of the following items:

System	Number of Cards	N+1 Supply Redundancy	A	B	C
1 AC Input	4 or less	No	X
4 or less	Yes	X	X
more than 4	No	X	X
more than 4	Yes	X	X	X
2 AC inputs	4 or less		X		X
more than 4		X	X	X	X

•

Power and sense cables between the AC power module and power entry back card (PE-BC)

Understanding the AC Power Supply Configuration

The setup for power supplies depends on the number of AC power inputs, the IGX model, and the number of cards in the system. The minimum configuration is one AC source and one supply. This minimum number applies to the IGX 8420 node: with 12 or fewer cards, one supply is enough. illustrates the alphanumeric slot designations in a full tray. The paragraphs that follow refer to these designations.

Redundancy

Two types of redundancy exist in the AC power supply configuration. One redundancy is that of AC power inputs. A redundant AC power source from a building circuit that is separate from the other AC circuit provides backup if one AC circuit at the site fails. The other redundancy is that of the 875-Watt power supply modules. Redundancy of the 875-Watt supplies provides a backup if one supply fails.

In supporting the two types of redundancy, power supply arrangements differ, as follows:

•

When a system uses two AC inputs, the number of supplies on the left and right sides must match. For example, if a system with dual AC inputs has four supplies, the supplies must occupy slots A, B, D, and E.

•

When a system uses one AC source, the number of supplies on the left and right sides can differ. For example, three supplies on the left and one on the right is permissible.

Power Supply Quantities

shows the required number of power supplies for the different IGX systems. In , the locations for primary (or minimal) power supplies are marked with an X. The primary supplies reflect redundancy of AC inputs and backup supplies. An O indicates a slot that must have a supply because the card cage contains more than 12 cards.

In , the System column lists the IGX model number coupled with the number of AC inputs and whether the single-AC input models have power supply redundancy. The table also shows the slot locations A through F and the part number of the kit that contains all the pieces for the item in the System column. Extra supplies for more than 12 cards (O) are not a part of a kit under Kit Part No. but have another part number. The part number of a supply ordered to fill extra power demands is IGX-AC-PS.


System	A	B	C	D	E	F	Kit Part No.
IGX 8420: 1 AC input, no power supply redundancy	X	O					IGX8420-AC1-1
IGX 8420: 1 AC input, with power supply redundancy	X	X	O				IGX8420-AC2-1
IGX 8420: 2 AC inputs	X	O		X	O		IGX8420-AC2-2
IGX 8430:1 AC input, no power supply redundancy	X	X	O				IGX8430-AC2-1
IGX 8430: 1 AC input, with power supply redundancy	X	X	X	O			IGX8430-AC4-1
IGX 8430: 2 AC inputs	X	X	O	X	X	O	IGX8430-AC4-2

Note that, with all power supply configurations, locations for the power supplies begin at the lowest lettered slot on either side, and the occupied positions are contiguous. For example, in a dual AC system, insert a supply in A, B, D, and E.

AC Installation in a Rack-Mount Cabinet

The procedures in this section apply to both the IGX 8420 and the IGX 8430 switch in a rack. (For stand-alone systems, the power supplies are already installed.) To replace a power supply, follow the steps in the chapter titled "Repair and Replacement."

Step 1

Attach the mounting brackets to the frame. For illustrative purposes, shows mounting brackets at mid-frame and the back (using rear and mid-mount brackets is not a likely configuration). In this view of the cabinet, the rear bracket shown is labeled with a -00. Brackets on the other side of the system are labeled with a -01.

Step 2

This step might require more than one person. If rear-mount brackets are used, slide in the power supply tray so its back rests on the rear bracket.

For a mid-mount rack only, attach the tray to the mounting brackets with the head of each mounting screw on the inside of the tray and each associated nut on the outside of the bracket.

Step 3

Secure the front of the power supply tray with the front screws. When tightening each of the front screws, hold the adjacent front flange of the tray slightly to the outside so the hinged door can freely open and close. See "Front Flange" in . The space between the right-angle edge of the flange and the edge of the hinged door should be approximately the width of a thumbnail.

Step 4

Install the power supplies. See for an illustration of a power supply. When a power supply almost reaches the end of the slot in the tray, a slight resistance is encountered. Push the power supply slightly farther in to achieve the final position and full connector mating.

Step 5

At the front of each supply, secure the supply to the tray by tightening the captive screw at the bottom/front of the supply.

Step 6

For slots without a power supply, the hinged door has a removable, dummy panel.

Step 7

Close the hinged door and secure it with the screw at the top-center of the door. For the next step, refer to , , and .

Step 8

Connect the power cables according to the applicable AC configuration shown in . The cables in differ only in length: pinouts are identical. Attach cable 215982-01 from the far right connector—labeled A 1-16 in —to the lower connector on the upper PE-BC. shows where system power connects to the PE-BC. It also shows the blank plate over an unused connection. If power supply trays D-F contain one or more supplies, run cable 215982-02 from the connector on the far left (B 1-16) to the upper connector on the PE-BC. See and . For an IGX 32, run cable 215982-00 from the connector labeled 17-32 to the lower connector on the lower PE-BC.

Installing the Cooling Unit

This section describes how to install the main fan tray (Fan Tray 1) in an IGX 8420/8430 node and the upper or booster fan tray (Fan Tray 2) in an IGX 8430 node. shows the main fan tray. shows the locations of Fan Tray 1 and Fan Tray 2 in an IGX 8430 node.

Two cables exist for supplying power to the fans. The short fan power cable is used in both the IGX 8420 and the IGX 8430 nodes. The long "Y" cable is used in the IGX 8430 only. See . In an IGX 8420, the short cable connects to connector "Fan 1" of the PE-BC.

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.

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 reside 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 .

Step 7

When power is turned on, make sure all fans are running, and execute the command dsppwr.

Making Power and Ground Connections

This section contains information on making connections to AC and DC-powered systems.

Making the Frame Bonding (Ground) Connection

The Cisco-supplied 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 a 1/4" by 20 threads per inch. shows the Cisco cabinet with the ground attachment studs in the upper and lower parts of the cabinet.

A stand-alone cabinet has provisions for mounting grounding conductors on the chassis by screws. In the stand-alone cabinet, this provision is a pair of captive nuts (threaded holes) for the screws on the mounting rail of the chassis (1/4" by 20 threads per inch). shows the location of the captive nuts and screws in a stand-alone cabinet for securing in the ground attachments.

The attachment points in the Cisco-supplied rack and stand-alone cabinets for the Cisco IGX 8400 series switches are indicated by a ground symbol on the cabinet near the point of attachment.

Cisco Cabinet Connections

Cisco recommends the following stacking order for attaching a ground conductor to the frame of a Cisco-supplied cabinet:

Step 2

Place the connector terminating the grounding conductor closed-loop ring or two-hole compression fitting onto the stud.

Step 3

Place another external, toothed starwasher or lockwasher onto the stud.

Stand-Alone Cabinet Connections

Cisco recommends the following stacking order for attaching a ground conductor to the frame of a standalone enclosure:

Step 2

Place the connector terminating the grounding conductor closed-loop ring or two-hole compression fitting.

Step 4

Screw the entire assembly into the captive nut in the mounting rail beneath the cover plate. See for an illustration of this stacking order in an IGX 8420 node. shows the location of the frame bonding connection on an IGX 8410 node.

AC Power Connections

Cisco provides at least one, eight-foot (three meter) power cord with each AC Power Supply Assembly. To make AC power connections to the IGX:

Step 1

Make sure all AC and system power circuit breakers are in the OFF position.

Step 2

Make sure the AC plug wiring has the correct relationship. shows the voltage across the wires in an IGX 8410 plug. shows the voltage across the wires in an IGX 8420/8430 plug.

Step 3

Plug the power cord into the IEC connector and tighten the screw on the clamping ring. See for an example of the IGX 8410 AC power area and for an IGX 8420/8430 example.

Step 4

Plug the AC power cord into a single-phase wall outlet rated for a nominal voltage.

For an IGX 8410 node, the AC voltage should be between 200 to 240 VAC or 100 to
120 VAC. The outlet must also be capable of supplying up to 12 Amps (13 Amps in the UK). The building circuit should be protected with a 15 or 20 Amp circuit breaker.

For an IGX 8420 or 8430, the AC voltage should be between 200 and 240 VAC. Each outlet must also be capable of supplying up to 16 Amps (13 Amps in the UK, where the plug has a built-in, 13 Amp fuse). In North America, the building circuit should be protected with a 20 Amp circuit breaker.

Step 5

For the dual power feed version, plug each power cord into a receptacle that connects to a separate building circuit to provide backup if one building circuit fails. Each building circuit should have a 15 or 20 Amp circuit breaker.

Step 6

The ground (green) wire of the AC power cord is connected to the IGX for safety ground. Make sure each AC receptacle in the building is grounded.

Step 7

In addition to the preceding, Cisco recommends that you provide an AC power strip with at least four outlets. Place the strip near the IGX to supply optional modems, CSUs, DSUs, or test equipment. Be sure to connect this power strip to an AC source voltage that is standard for the region (for example, 115 VAC in North America or 230 VAC in Europe).

Note

Neither the AC power supplies nor any other components have test points for checking power supply voltages. For a visual check when power is on, observe whether the AC OK LED and DC OK LED are lit. Also, use the dsppwr command to check the state of power supplies.

DC Power Connections

A system that uses a DC power source have one or two configurations, as follows:

Wiring is connected from one or two -48 VDC power sources to one or two DC PEMs per shelf. Cisco does not provide the wire between the node and the source. Instead, the installer or customer must supply it. These wires should be capable of carrying 20 Amps. The diagrams on the pages that follow show DC wiring for single and redundant DC sources for all IGX models.

As the detailed steps on the following pages explain, installing DC power consists of attaching the three wires of the DC power source to a removable wiring block, then plugging that block into the connector on the PEM. The PEM is plugged into the PE-BC. is a view of a PE-BC (out of the card cage) with the PEM wired up and plugged into the PE-BC. shows a non-redundant DC power configuration. Note the blank plate that covers the unused connection.

Note

A DC-powered system makes no distinction between a primary and redundant PEM (unlike the redundancy scheme in an AC-powered system). However, Cisco suggests putting a label of some type on the PEM to identify the branch circuit to which it goes.

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/or damage the equipment.

Make sure the circuit breaker is in the OFF position.

Step 1

For both stand-alone systems, the cable guard (located at the right edge of the chassis) remains off until the system is ready to power up. Remove the cable guard by loosening the captive screw at its base then swinging it away from the chassis (do this latter movement holding the top of the cable guard in place while moving the bottom of it away from the chassis).

Step 2

Insert and secure the stripped ends of the wire in the wiring block according to the scheme in and . illustrates the polarity of each connection on the pluggable terminal block. The numbers start with 1 at the bottom and go to 3. The connection at the bottom is for the -48 VDC wire. The middle wire is Safety Ground. The connection at the top is for the positive return wire (for the -48 VDC). shows the assembly with an example wire and the screw that secures it in the pluggable wire block.

For personnel safety, the green or green/yellow wire must connect to safety (earth) ground at both the equipment and at the supply side of the DC wiring.

Step 5

Connect the DC input wiring to a DC source capable of supplying at least 20 Amps (typical). The -48 VDC power source in the building should have a 25 A DC circuit breaker. The building's wiring should include an easily accessible disconnect device. Make sure the ground wire connects to a reliable building (earth) ground.

Step 7

Before you turn on the system power, check the supply voltage. Use the screws at positions 1 and 3 on the pluggable terminal block as a convenient measuring point. Also, check the impedance between the safety ground (screw at location 2 on the pluggable terminal block) and the chassis. It should be close to 0.

Step 8

Turn on the power, and check the voltage at the screws at positions 1 and 3 on the pluggable terminal block.

Warning

For personnel safety, the green or green/yellow wire must connect to safety (earth) ground at both the equipment and at the supply side of the DC wiring.

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