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This chapter describes how to install the power supply modules. The following topics are included in this chapter:
Note The contents of this chapter are not applicable to the Cisco Catalyst 3650-24PDM and Catalyst 3650-48FQM switches. These switches come with fixed power supply modules and require no separate installation.
The switch operates with either one or two active power supply modules. Two power supply modules can be powered up from two different phases.
You can use two AC modules, two DC modules, one AC and one DC module, or one module and a blank cover.
Note In a Network Equipment Building System (NEBS) installation, you can use two DC modules or one DC module and a blank cover.
All the switches ship with a blank cover in the second power supply slot if switches are configured with only one power supply.
Table 4-1 Table 4-1describes the supported internal power supply modules.
The input voltages of the power supplies are as follows:
Each AC power supply module has a power cord for connection to an AC power outlet.
Note • For information on 250-W AC power supply support on the PoE-capable switch models, see the Cisco Catalyst 3650 Series Switches Release Notes at http://www.cisco.com/c/en/us/support/switches/catalyst-3650-series-switches/products-release-notes-list.html.
.Figure 4-1 to Figure 4-6 show the power supply modules.
Figure 4-1 1100-W AC Power Supply
Figure 4-2 715-W AC Power Supply Module
Figure 4-3 1025-W AC Power Supply
Figure 4-4 640-W AC Power Supply Module
Figure 4-5 250-W AC Power Supply Module
Figure 4-6 640-W DC Power Supply Module
If no power supply is installed in a power supply slot, install a power supply slot blank cover (Figure 4-7).
Figure 4-7 Power Supply Slot Blank Cover
The power supply modules have two status LEDs:
Table 4-1 lists the switches and the compatible power supply modules. Observe these guidelines when removing or installing a power supply or fan module:
For information about the switch commands that display the available power budget, see the Cisco Catalyst 3650 Series Switches Software Configuration Guides at http://www.cisco.com/c/en/us/support/switches/catalyst-3650-series-switches/products-installation-and-configuration-guides-list.html .
Note For information on 250-W AC power supply support on the PoE-capable switch models, see the Cisco Catalyst 3650 Series Switches Release Notes at http://www.cisco.com/c/en/us/support/switches/catalyst-3650-series-switches/products-release-notes-list.html.
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. Statement 1029
Warning Do not reach into a vacant slot or chassis while you install or remove a module. Exposed circuitry could constitute an energy hazard. Statement 206
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030
Step 1 Turn off the power at its source.
Step 2 Remove the power cord from the power cord retainer.
Step 3 Remove the power cord from the power connector.
Step 4 Press the release latch at the right side of the power supply module inward and slide the power supply out (Figure 4-8).
Warning This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028
Step 5 Insert the new power supply into the power supply slot, and gently push it into the slot (Figure 4-8). When correctly inserted, the 250-W, 640-W, and 715-W power supply modules (excluding the power cord retainer) are flush with the switch’s rear panel. The 1025-W and 1100-W power supply modules extend 1.5 inches from the switch’s rear panel.
Figure 4-8 Inserting the AC Power Supply in the Switch
Step 6 (Optional) Make a loop in the power cord and thread it through the power cord retainer (Figure 4-9).
Figure 4-9 AC Power Supply with Power Cord Retainer
Step 7 Connect the power cord to the power supply and to an AC power outlet. Turn on the power at the power source.
Step 8 Confirm that the power supply AC OK and PS OK LEDs are green.
Warning An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure that no exposed portion of the DC-input power source wire extends from the terminal block plug. Statement 122
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement 1003
Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than: 25 A. Statement 1005
Warning A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement 1022
Warning Hazardous voltage or energy may be present on power terminals. Always replace cover when terminals are not in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement 1086
Note The grounding architecture of this product is DC-isolated (DC-I).
Follow the grounding procedures at your site and observe these warnings:
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. Statement 1024
Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046
Follow these steps to install either a single-hole ground lug or a dual-hole ground lug on the switch. Make sure that you follow grounding requirements, if any, at your site.
Step 1 Use the ground lug screw and the lug ring for a single-hole ground connection. Use the dual-hole lug for a ground connection in an NEBS installation.
Step 2 Strip the 12-gauge or 8-gauge ground wire to 0.5 inch (12.7 mm) ± 0.02 inch (0.5 mm) (Figure 4-10). Stripping more than the recommended amount of wire can leave exposed wire from the connector. Use 12-gauge copper ground wire for the single-hole ground connection. Use 8-gauge copper ground wire for the dual-hole ground connection.
Figure 4-10 Stripping the Ground Wire
Step 3 Slide the open end of the ground lug over the exposed area of the wire.
Step 4 Using a Panduit crimping tool, crimp the ground lug to the wire (Figure 4-11).
Figure 4-11 Crimping the Ground Lug
Step 5 Use the ground screw to attach the single-hole ground lug to the switch’s rear panel. Use two ground screws to attach the dual-hole lug to the switch’s rear panel (Figure 4-12).
Step 6 Using a ratcheting torque screwdriver, torque the ground-lug screws to 60 lbf-in. (960 ozf-in.).
Step 7 Connect the other end of the grounding wire to an appropriate grounding point at your site or to the rack.
Figure 4-12 Attaching the Ground Lug and Wire Assembly
Before installing the power supply, see the “Installation Guidelines” section.
Step 1 Turn off DC power. To ensure that power is off, change the circuit breakers to the OFF position, and tape the circuit-breaker switches in the OFF position.
Step 2 Remove the plastic safety cover from the power supply terminal blocks (Figure 4-6).
If you are not replacing a DC power supply, go to Step 5.
Step 3 Use a number-2 Phillips screwdriver to remove the DC-input power wires from the power terminals.
Step 4 Press the release latch at the right side of the power supply module inward, and pull the power supply out.
Step 5 Insert the power supply in the power supply slot, and gently push it into the slot (Figure 4-13). When correctly installed, the DC power supply (excluding the extraction handle) is flush with the switch’s rear panel.
Figure 4-13 Inserting the DC Power Supply in the Switch
Step 6 Connect the input power, as described in the “Wiring the DC Input Power Source” section.
Step 1 Using a wire-stripping tool, strip each of the four wires from the DC-input power source to the appropriate length for the terminals.
Warning Use copper conductors only. Statement 1025
Step 2 Using a Panduit crimping tool, crimp the fork-type terminals to the copper conductor, 90C, 12-AWG DC power input wires.
Step 3 Connect the DC-input power terminals to the terminal blocks. See Figure 4-14 or Figure 4-15. Make sure that you match the polarity (negative to negative, positive to positive) when connecting the wires to the terminal blocks. Connect the ground wire to a grounded metal rack or to earth ground if the switch is not in a grounded rack.
Figure 4-14 DC Source A Isolated from Source B with No Common Ground
Figure 4-15 DC Source A and Source B Connections with Common Ground
Step 4 Torque all the terminal block screws to 11 lbf-in.
Step 5 Replace the terminal block safety cover.
Step 6 Move the DC power source circuit-breakers to the ON position.
Step 7 Confirm that the power supply DC OK and PS OK LEDs are green. See Table 4-2 for a description of the module LEDs.
If you contact Cisco Technical Assistance regarding a power supply module, you should know the serial number. See Figure 4-16 to Figure 4-20 to find the serial number.
Figure 4-16 1100-W AC Power Supply Serial Number
Figure 4-17 1025-W AC Power Supply Serial Number
Figure 4-18 715-W AC Power Supply Serial Number
Figure 4-19 640-W and 250-W AC Power Supply Module Serial Number
Figure 4-20 640-W DC Power Supply Module Serial Number