cc/td/doc/product/access/ap/ap_ts3
hometocprevnextglossaryfeedbacksearchhelp
PDF

Table of Contents

Cabling DC Fuse Panels in the Cisco AccessPath-TS3 Model 530 Integrated Access System
 Connect the Internal Power Supplies to the DC Fuse Panels
 Input Connection
 Install the Fuses
 Powering On the System
 Troubleshooting DC Fuse Panel Installation
 Cisco Connection Online

Cabling DC Fuse Panels in the Cisco AccessPath-TS3 Model 530 Integrated Access System

This chapter describes and illustrates how to cable the DC fuse panels in the Cisco AccessPath-TS3 Model  530 Integrated Access System. The DC fuse panels are factory-installed.

The DC fuse panels accept two 50 amp, -48 VDC circuits of input power. Each panel can supply a total of 100 amps of steady-state output current.

Note      Your DC fuse panel might look slightly different, but its functionality is the same as the panel described and illustrated below. Grey fuse panels have circuit breakers; black do not.


Figure 3-1   DC Fuse Panel—Front View


Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals.

Before performing any of the following procedures, confirm that power is removed from the DC circuit. To confirm that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position.

Connect the Internal Power Supplies to the DC Fuse Panels

The following steps explain how toconnect the internal power supplies to the DC fuse panels:

Step 1   If you are installing the grey fuse panels, confirm that the 2 main circuit breakers on every DC fuse panels is in the OFF position. The switches point away from each other in the OFF position.

There are 2 sets of independent input DC power connectors and, on the grey DC fuse panels, 2 separate circuit breakers on each DC fuse panel. Each of the 2 circuit breakers on a DC fuse panel is associated with only 1 side of the panel and 1 group of 10 DC output connections.

Step 2   Cut sets of wires (1 red, 1 black) to the lengths specified in Step 7 through Step 11.

Note Red wires are positive (+) and black wires are negative (-).

Step 3   Remove about 0.25 inch of insulation from each end of the wire.

Step 4   Tin both ends to insure that the wire does not fray or cause a bad connection.

When stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type with upturned lugs. These terminations should be the appropriate size for the wires and should clamp both the insulation and conductor.

Step 5   Connect a spade-type terminal lug to the end of each wire, as necessary.

The wires to the Access Server Shelf, System Controller and the Router Shelf (or shelves) do not require terminal lugs at the shelf end of the wires.

Step 6   The following steps explain how to connect each shelf (see Figure 3-2).

Note      Your DC fuse panel might look slightly different, but its functionality is the same as the panel described and illustrated below. Grey fuse panels have circuit breakers; black do not.


Figure 3-2   Wiring the DC Fuse Panels


Figure 3-2 shows the DC fuse panel terminal block. Install each wire from the designated DC fuse panel terminal to the designated shelf location (terminal) using 14-gauge wire. The proper wiring sequence is positive to positive (line to +) and negative to negative (neutral to -). Route all power wiring away from sharp edges and the interface cards on the access server shelves to avoid possible damage to the wires.

Connect the System Controller

Step 7   Wire the System Controller (also called the Console Management Shelf) as follows:

DC Power Termination DC Fuse Panel and Terminal 14 gauge wire spec

Positive terminal
Negative terminal

1 - B1 return
1 - B1 equip

Red wire 98 in. long
Black wire 98 in. long

Connect the Switch Shelf

Step 8   Wire the Switch Shelf as follows:

DC Power Termination DC Fuse Panel and Terminal 14 gauge wire spec

Power supply 1 positive terminal
Power supply 1 negative terminal
Power supply 2 positive terminal
Power supply 2 negative terminal

2 - A1 return
2 - A1 equip
2 - B1 return
2 - B1 equip

Red wire 102 in. long
Black wire 102 in. long
Red wire 87 in. long
Black wire 87 in. long

Connect the First Router Shelf

Step 9   Wire the first Router Shelf as follows. The first Router Shelf is the lower of the 2 router shelves.

DC Power Termination DC Fuse Panel and Terminal 14 gauge wire spec

Power supply 1 positive terminal
Power supply 1 negative terminal
Power supply 2 positive terminal
Power supply 2 negative terminal

Terminal A1 return
Terminal A1 equip
Terminal B2 return
Terminal B2 equip

Red wire 78 in. long
Black wire 78 in. long
Red wire 96 in. long
Black wire 96 in. long

Connect the Second Router Shelf

Step 10   Wire the second Router Shelf as follows. The second Router Shelf is the upper of the 2 router shelves.

DC Power Termination DC Fuse Panel and Terminal 14 gauge wire spec

Power supply 1 positive terminal
Power supply 1 negative terminal
Power supply 2 positive terminal
Power supply 2 negative terminal

Terminal A2 return
Terminal A2 equip
2 - B2 return
2 - B2 equip

Redwire 70 in long
Black wire 70 in. long
Red wire 77 in. long
Black wire 77 in. long

Connect the Access Server Shelves

Step 11   Wire the Access Server Shelf as follows:

DC Power Termination DC Fuse Panel and Terminal 14 gauge wire spec
Access Server Shelf 1 (AS1)

Positive terminal
Negative terminal


1 - A3 return
1 - A3 equip


Red wire 86 in. long
Black wire 86 in. long

Access Server Shelf 2 (AS2)

Positive terminal
Negative terminal


2 - A2 return
2 - A2 equip


Red wire 84 in. long
Black wire 84 in. long

Access Server Shelf 3 (AS3)

Positive terminal
Negative terminal


1 - B3 return
1 - B3 equip


Red wire 84 in. long
Black wire 84 in. long

Access Server Shelf 4 (AS4)

Positive terminal
Negative terminal


2 - B3 return
2 - B3 equip


Red wire 79 in. long
Black wire 79 in. long

Access Server Shelf 5 (AS5)

Positive terminal
Negative terminal


1 - A4 return
1 - A4 equip


Red wire 74 in. long
Black wire 74 in. long

Access Server Shelf 6 (AS6)

Positive terminal
Negative terminal


2 - A3 return
2 - A3 equip


Red wire 71 in. long
Black wire 71 in. long

Access Server Shelf 7 (AS7)

Positive terminal
Negative terminal


1 - B4 return
1 - B4 equip


Red wire 71 in. long
Black wire 71 in. long

Access Server Shelf 8 (AS8)

Positive terminal
Negative terminal


2 - B4 return
2 - B4 equip


Red wire 68 in. long
Black wire 68 in. long

Access Server Shelf 9 (AS9)

Positive terminal
Negative terminal


1 - A5 return
1 - A5 equip


Red wire 62 in. long
Black wire 62 in. long

Access Server Shelf 10 (AS10)

Positive terminal
Negative terminal


2 - A4 return
2 - A4 equip


Red wire 59 in. long
Black wire 59 in. long

Access Server Shelf 11 (AS11)

Positive terminal
Negative terminal


1 - B5 return
1 - B5 equip


Red wire 59 in. long
Black wire 59 in. long

Input Connection

The following steps explain how toconnect input power to the DC fuse panels:

Step 1   Ensure that the Cisco AccessPath-TS3 Model  530 Integrated Access System is properly grounded.

You must secure the fuse panel frame ground to the frame ground stud on the system rack. Use a green 6-gauge wire to connect a ground to the frame ground stud at the top (or bottom) right rear corner of the system rack. The frame ground should be grounded at the main input to the system system.

This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use.
When installing the unit, the ground connection must always be made first and disconnected last.
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.

A readily accessible two-pole disconnect device must be incorporated in the fixed wiring.

Step 2   Confirm that every AccessPath shelf is properly grounded.

Step 3   Connect the 14 AWG green ground wires from the earthing terminal of each shelf to the tap angles:

    (a). For each shelf, cut a 10 in. length of 14 AWG wire.

    (b). Remove 0.25 inch of insulation from the end of the 14 AWG wire.

    (c). Double-crimp a ring-lug to an end of the wire and connect it to the tap angle at the right of each shelf using a screw and lock washer.

    (d). Ground each shelf by securing the other end of its grounding wire to the earthing terminal of the shelf.

Step 4   Confirm that the main power circuit breakers are OFF at the building feed; lockouts are mandatory.

Step 5   Confirm that the 2 main circuit breakers on the DC fuse panel are in the OFF position. The switches point away from each other in the OFF position.

Note The grey DC fuse panels have input circuit breakers and black panels do not.

There are 2 sets of independent input DC power connectors and, on the grey DC fuse panels, 2 separate circuit breakers. Each of the 2 circuit breakers on the DC fuse panel is associated with only 1 side of the panel and 1 group of 10 DC output connections.

Step 6   Cut 2 sets of 6-gauge wires (2 white, 2 black) to the lengths necessary to reach the DC power source from the DC fuse panels when they are mounted in the system rack.

Note White wires are positive (+) and black wires are negative (-).

Step 7   Remove 0.5 inch of insulation from the end of each wire.

Step 8   Remove the DC input terminal connectors on the rear panel by first removing the plastic safety shield, then loosening both locking nuts on each connector.

Step 9   Solder the uninsulated end of each wire into the terminal connector so that no bare wire is exposed.

Step 10   Replace the terminals on the appropriate connectors on the DC fuse panels and tighten both locking nuts, as shown in Figure 3-3.

Note      Your DC fuse panel might look slightly different, but its functionality is the same as the panel described and illustrated below. Grey fuse panels have circuit breakers; black do not.


Figure 3-3   DC Fuse Panel-Input Feed Wiring


Step 11   Replace the plastic safety shield that covers the DC input connectors.

Step 12   After connecting 2 sets of input feed wires to each of the DC fuse panels, connect each set of 50-amp input feed connections to the DC power source. Confirm that the polarity of all connections is correct.

Install the Fuses

The following steps explain how toinstall the correct fuses in the correct positions:

Step 1   Confirm that the 2 main circuit breakers on the DC fuse panel are in the OFF position. The switches point away from each other in the OFF position.

Note The grey DC fuse panels have input circuit breakers and black panels do not.

There are 2 sets of independent input DC power connectors and, on the grey DC fuse panels, 2 separate circuit breakers. Each of the 2 circuit breakers on the DC fuse panel is associated with only 1 side of the panel and 1 group of 10 DC output connections.

Step 2   Install individual GMT-style fuses as listed in Table 3-1 DC Fuse Panel Fuse Locations and Sizes to protect the system at the component level.

When the fuse is correctly installed, the rating stamped on the fuse is upside down as shown in Figure 3-4. The fuse is keyed to prevent incorrect insertion; do not force it.

Note      Your DC fuse panel might look slightly different, but its functionality is the same as the panel described and illustrated below. Grey fuse panels have circuit breakers; black do not.


Figure 3-4   Fuse Installation


Step 3   Verify that you installed GMT-style fuses of the correct rated current in the correct locations, as specified in Table 3-1.

Step 4   After installing all the fuses correctly, continue with the procedure "Powering On the System."

Table 3-1   DC Fuse Panel Fuse Locations and Sizes

AccessPath Shelf Location DC Fuse Panel and Terminal Fuse Size

Router Shelf 1, Power Supply 1

1 — A1

GMT 15

Router Shelf 2, Power Supply 1

1 — A2

GMT 15

Access Server Shelf 1

1 — A3

GMT 15

Access Server Shelf 5

1 — A4

GMT 15

Access Server Shelf 9

1 — A5

GMT 15

System Controller

1 — B1

GMT 15

Router Shelf 1, Power Supply 2

1 — B2

GMT 15

Access Server Shelf 3

1 — B3

GMT 15

Access Server Shelf 7

1 — B4

GMT 15

Access Server Shelf 11

1 — B5

GMT 15

Switch Shelf, Power Supply 1

2 — A1

GMT 15

Access Server Shelf 2

2 — A2

GMT 15

Access Server Shelf 6

2 — A3

GMT 15

Access Server Shelf 10

2 — A4

GMT 15

Switch Shelf, Power Supply 2

2 — B1

GMT 15

Router Shelf 2, Power Supply 2

2 — B2

GMT 15

Access Server Shelf 4

2 — B3

GMT 15

Access Server Shelf 8

2 — B4

GMT 15

Powering On the System

The following steps explain how to power on the system:

Step 1   Confirm that the main power circuit breakers are OFF at the building feed.

Do not work on the system or connect or disconnect cables during periods of lightning activity.
Before performing any of the following procedures, confirm that power is removed from the DC circuit. To confirm that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position.

Step 2   Confirm that the 2 main circuit breakers on each of the DC fuse panels are in the OFF position. The switches point away from each other in the OFF position.

Note The grey DC fuse panels have input circuit breakers and the black do not.

There are 2 sets of independent input power connectors and, on the grey DC fuse panels, 2 separate circuit breakers. Each of the 2 circuit breakers on a DC fuse panel is associated with only 1 side of the panel and 1 group of 10 DC output connections.

Step 3   Confirm that the main power feeds to the DC fuse panels are the correct polarity.

Step 4   Confirm that all connections from the DC fuse panels to the DC power supplies are the correct polarity.

Step 5   Turn on all DC power supplies at the component level.

Step 6   Go to the main circuit breakers off the input feeds and place the circuit breakers in the ON position.

After wiring the DC fuse panel, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position.
Power is now present on thesystem rack. Hazardous conditions exist; use caution.

Step 7   Turn on both of the DC fuse panel Main Power A circuit breakers.

Note The grey DC fuse panels have input circuit breakers and the black do not.

Step 8   Turn on the DC fuse panel Main Power B circuit breaker on panel 1 only.

Step 9   Check the power supples and systems for power-on LED indications and airflow. Make this visual check inside the cabinet on each power supply and each system.

Troubleshooting DC Fuse Panel Installation

If a power system failure occurs, one or more DC fuses will open. In case of multiple failures, one or both of the main circuit breakers will trip, shutting down several units in the system system if not the entire system.

Note The grey DC fuse panels have input circuit breakers and the black do not.

The following steps explain how to troubleshoot the system:

Step 1   Check the individual power supplies to determine if any supply has no LED power on indication or no airflow. If a fault condition occurs, remove all power by first turning off the 4 DC fuse panel circuit breakers, then turning off the main power circuit breakers.

When equipment installed in an system system rack fails because of overheating or power loss, try operating the equipment by itself. Power OFF other equipment in the rack (and in adjacent racks) to allow the failing unit maximum cooling air and clean power.

Step 2   Replace any defective fuse with a fuse of the correct rating.

Never change fuses with live power present. Lethal currents are present on and in the DC fuse panels.
Never use a larger fuse than what is specified for the individual locations. Refer to Table 3-1 for the correct fuse size for each location.

Step 3   Follow the power-on sequence of operations. See "Powering On the System".

Step 4   Verify that the proper LED power on indications are present and that airflow has resumed.

If there is still no power applied to the component in question (that is, if no LED power on indication is present and/or there is no airflow), a qualified service person should be called to replace the power supply component.

Cisco Connection Online

Cisco Connection Online (CCO) is Cisco Systems' primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional information and services.

Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.

CCO serves a wide variety of users through 2 interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.

You can access CCO in the following ways:

For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.

Note      If you are a network administrator and need personal technical assistance with a Cisco product that is under warranty or covered by a maintenance contract, contact Cisco's Technical Assistance Center (TAC) at 800 553-2447, 408 526-7209, or tac@cisco.com. To obtain general information about Cisco Systems, Cisco products, or upgrades, contact 800 553-6387, 408 526-7208, or cs-rep@cisco.com.


hometocprevnextglossaryfeedbacksearchhelp
Posted: Tue Jan 21 04:31:57 PST 2003
All contents are Copyright © 1992--2002 Cisco Systems, Inc. All rights reserved.
Important Notices and Privacy Statement.