Table of Contents

Installing an AC Power Supply Tray
Installing an AC Power Supply
AC Power Input Connections
Card Slot Fuses
Fan Power Fuses

Installation, AC Shelf Initial Setup

This chapter explains how to install the AC power supply tray, power supplies, and make AC power connections.

Before proceeding to this chapter, the procedures should be completed, in either:

• Chapter 5, Installation with Cisco Cabinets including 7000 Series Routers

or


• Chapter 6, Installation with Customer Cabinet

This chapter contains the following sections:

• Installing an AC Power Supply Tray

• Installing an AC Power Supply

• AC Power Input Connections

• Card Slot Fuses

• Fan Power Fuses

Installing an AC Power Supply Tray

The AC Power Supply Assembly is shipped separately and must be mounted directly below the BPX switch shelf. It consists of a Power Supply Tray and one or two AC power supplies. The power supplies are shipped separately from the AC Power Supply Tray and are installed after the BPX switch shelf is mounted in place.

Step 2   Locate the small access hole in the top center of the front Air Intake Grille on the Power Supply Tray (see Figure 8-3).

Step 3   Insert a slotted blade screwdriver (0.20/0.25 inch blade width) into the access hole until it stops (approximately 1 inch).

Step 4   Carefully rotate the screwdriver approximately a quarter turn in either direction. The top of the Air Intake Grille should spring out.

Step 5   Remove the Air Intake Grille.

Step 6   Slide the Power Supply Tray in the rack between the BPX switch shelf and the temporary support brackets and spacer bar (see Figure 8-2). If cables are attached, use care to avoid damaging them.

Step 7   Install screws and washers to loosely secure power supply assembly to the front of the BPX switch shelf. Align the front flanges of the Power Supply Tray with the flanges on the BPX switch shelf and tighten screws. There should be approximately 1/16" clearance between the BPX switch shelf and the Power Supply Tray to provide sufficient clearance for inserting power supplies.

Step 8   Secure the Power Supply Tray to the rear support bracket (plate) using one #10-32 screw and flat washer on each side. Use the lower hole in the brackets. Figure 8-4 shows the setup for a configuration with the vertical rails at a 30 inch setback.

For a configuration with vertical rails at a 19.86 inch rail setback, attach one #10-32 screw and flat washer to the single bracket on each side. Use the lower hole in the brackets. Figure 8-5 shows the bracket configuration only; the power supply tray position is the same as shown for in Figure 8-4.

Step 9   Connect and secure a power supply interconnect cable (Cable A in Figure 8-6) between the primary AC Power Supply and the BPX switch backplane power connector.

Step 10   Connect and secure a second power supply interconnect cable (Cable B in Figure 8-6) between the redundant AC Power Supply and the BPX switch backplane power connector.

Step 11   Remove the temporary support bracket and spacer bracket from the front of the cabinet.

Figure 8-6: AC Power Supply Tray with Redundant AC Inputs (view from rear)

Installing an AC Power Supply

The AC Power Supply is an assembly consisting of an AC-DC Converter, cooling fan, LED bezel, and mounting frame. The AC Power Supply is installed and removed as an integral unit. There may be one or two AC Power Supplies depending on node configuration. They are housed in the Power Supply Tray.

Proceed as follows to install an AC Power Supply in the Power Supply Tray:

Step 2   Set the circuit breaker(s) at the rear of the Power Supply Tray to OFF.

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Note When replacing an AC power supply, the circuit breaker at the rear of the Power Supply Tray may be left ON as the power supplies are hot pluggable.

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Step 3   If not already removed, remove the Power Supply Tray front Air Intake Grille. Locate the small access hole in the top, center of the front Air Intake Grille for the Power Supply Tray (see Figure 8-7).

Step 6   Loosen the captive screw in the center of the power supply retainer and rotate the hinged retainer frame down (see Figure 8-8).

Step 7   Align the power supply in the PS-A slots at the bottom of the Power Supply Tray and gently slide it in part way (see Figure 8-8).

Step 8   Continue to slide the power supply in until it mates with the rear connector.

Step 9   When the power supply is completely seated in its connector, the pin plunger on the left side of the supply will engage with a hole in the tray. If not, push firmly on the front edge until the power supply assembly seats in the connector.

Step 10   Screw the right-hand thumbscrew in finger tight.

Step 11   When a second power supply is provided, install it in the PS-B slot in the same manner after removing the Blank Panel from Slot B.

Step 12   Rotate the power supply retainer up and tighten the center captive screw.

Step 13   Install the Air Intake Grille. Press on the top center until the latch snaps into place.

AC Power Input Connections

There are three configurations of the AC-powered BPX switch cabinet as follows:

• Single power supply, single AC power feed.

• Dual power supplies, single AC power feed.

• Dual power supplies, dual AC power feed.

An 8 ft. (3 m.) power cord is supplied with each AC Power Supply Assembly. To make AC power connections to the BPX switch:

Step 2   Plug the BPX switch cord into a 220 to 240 VAC, single-phase, wall outlet capable of supplying 20 A. The building circuit should be protected with a 20 A circuit breaker.

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Note  The BPX switch circuit breaker has been changed from 15 A to 20 A to provide improved system availability for installations with a single line cord and (N+1) power supplies.

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Step 3   For the dual power feed version, plug each power cord into receptacles on separate building circuits to provide protection against a power feed failure. Each building circuit should be protected with a 20A circuit breaker.

Step 4   The ground (green/yellow) wire of the AC power cord provides the safety ground to the BPX switch via the grounding prong on the three-prong connectors. Make sure the building AC receptacle is also properly grounded (see Figure 8-10).

Step 6   Proceed to Chapter 9, Finishing the Installation and Power-Up.

Card Slot Fuses

Fuses for each card slot have been added to the backplane of later versions of the BPX switch to protect against catastrophic backplane damage in the event of a shorted connector power pin. Backplane fuses should rarely, if ever, need replacement. The card slot fuses are designated F4 through F18, corresponding to card slot numbers 1 through 15, respectively.

Refer to the Cisco BPX 8600 Series Reference document, Repair and Replacement chapter, for instructions on replacement of these fuses, and contact Customer Service for assistance regarding their replacement.

Caution For continued protection against risk of fire, replace only with the same type and rating of fuse. Fuses should only be replaced after all power to the BPX switch has been turned off.

Fan Power Fuses

Fan fuses are located on the backplane of the BPX switch to protect against catastrophic backplane damage in the event of a shorted fan cable. Backplane fuses should rarely, if ever, need replacement. The fuses are designated F1 through F3, corresponding to fans 1 through 3.

Caution Refer to the Cisco BPX 8600 Series Reference document, Repair and Replacement chapter, for instructions on replacement of these fuses, and contact Customer Service for assistance regarding their replacement.

Caution For continued protection against risk of fire, replace only with the same type and rating of fuse. Replace fuses only after all power to the BPX switch has been turned off.

Posted: Thu Jul 26 18:16:51 PDT 2001
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