|
|
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.
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.
Warning 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.
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.
Caution 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.
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.
Warning 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).
Caution 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.
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 |
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 |
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 |
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 |
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 | 1 - A3 return 1 - A3 equip | Red wire 86 in. long Black wire 86 in. long |
| Access Server Shelf 2 (AS2)
Positive terminal | 2 - A2 return 2 - A2 equip | Red wire 84 in. long Black wire 84 in. long |
| Access Server Shelf 3 (AS3)
Positive terminal | 1 - B3 return 1 - B3 equip | Red wire 84 in. long Black wire 84 in. long |
| Access Server Shelf 4 (AS4)
Positive terminal | 2 - B3 return 2 - B3 equip | Red wire 79 in. long Black wire 79 in. long |
| Access Server Shelf 5 (AS5)
Positive terminal | 1 - A4 return 1 - A4 equip | Red wire 74 in. long Black wire 74 in. long |
| Access Server Shelf 6 (AS6)
Positive terminal | 2 - A3 return 2 - A3 equip | Red wire 71 in. long Black wire 71 in. long |
| Access Server Shelf 7 (AS7)
Positive terminal | 1 - B4 return 1 - B4 equip | Red wire 71 in. long Black wire 71 in. long |
| Access Server Shelf 8 (AS8)
Positive terminal | 2 - B4 return 2 - B4 equip | Red wire 68 in. long Black wire 68 in. long |
| Access Server Shelf 9 (AS9)
Positive terminal | 1 - A5 return 1 - A5 equip | Red wire 62 in. long Black wire 62 in. long |
| Access Server Shelf 10 (AS10)
Positive terminal | 2 - A4 return 2 - A4 equip | Red wire 59 in. long Black wire 59 in. long |
| Access Server Shelf 11 (AS11)
Positive terminal | 1 - B5 return 1 - B5 equip | Red wire 59 in. long Black wire 59 in. long |
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.
Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use.
Warning When installing the unit, the ground connection must always be made first and disconnected last.
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.
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.
Caution 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.
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.
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.
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.
Caution 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.
Caution 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.
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."
| 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 |
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.
Warning Do not work on the system or connect or disconnect cables during periods of lightning activity.
Warning 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.
Caution 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.
Warning 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.
Caution 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.
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.
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.
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.
Warning Never change fuses with live power present. Lethal currents are present on and in the DC fuse panels.
Caution 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" on page 8.
Step 4 Verify that the proper LED power on indications are present and that airflow has resumed.
Caution 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 (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.
|
|