cisco PWR-C1-1100WAC Power Supply Installation Guide
- June 3, 2024
- Cisco
Table of Contents
cisco PWR-C1-1100WAC Power Supply
Installing a Power Supply
- Power Supply Modules Overview, on page 1
- Installation Guidelines, on page 5
- Installing or Replacing an AC Power Supply, on page 6
- Installing a DC Power Supply, on page 8
- Finding the Power Supply Module Serial Number, on page 13
Power Supply Modules Overview
The switch operates with either one or two active power supply modules. A
switch that is part of a StackPower stack operates with power that is supplied
by other stack switches.
You can use two AC modules or one module and blank cover. All power supply
modules have internal fans.
All switches ship with a blank cover in the second power supply slot.
The following table describes the supported internal power supply modules. It
lists the Platinum-certified power supply modules and the default modules that
are shipped with the switch. In a switch, a mix of Platinum certified and non-
Platinum-certified power supply modules is supported.
Table 1: Power Supply Module Part Numbers and Descriptions
| Part Number | Description |
|---|---|
| PWR-C1-1100WAC | 1100 W AC power supply module |
| PWR-C1-715WAC | 715 W AC power supply module |
| PWR-C1-350WAC | 350 W AC power supply module |
| PWR-C1-350WAC-P | 350 W AC Platinum certified power supply module |
| PWR-C1-715WAC-P | 715 W AC Platinum certified power supply module |
| PWR-C1-1100WAC-P | 1100 W AC Platinum certified power supply module |
| PWR-C1-1900WAC-P1 | 1900 W AC Platinum certified power supply module |
| PWR-C1-715WDC | 715 W DC power supply module |
| PWR-C1-BLANK | Blank cover |
Note
- PWR-C1-1900WAC-P provides 1900 W output power when the nominal input voltage is 230 V. If the nominal input voltage is 115 V, then the output power is limited to 1500 W. See Table 2 for suitable power cord options.
For more information about power supplies, see Specifications for the Power Supplies, Switches, and Fan.
For information on available PoE, PoE+, and Cisco UPOE/UPOE+ requirements, see
these sections the Power Supply Modules.
The 350 W and 715 W AC power supply modules are autoranging units that support
input voltages from 100 through 240 VAC. The 1100W power supply module is an
autoranging unit that supports input voltages from
115 through 240 VAC.
Each AC power supply module has a power cord for connection to an AC power
outlet. To view the list of available AC power cords, see AC Power Cord
Specifications.
The following illustrations show the power supply modules.
Figure 1: 1100WAC Power Supply
| 1 | 1100 W AC power supply module | 5 | Release latch |
|---|---|---|---|
| 2 | AC OK LED | 6 | Power cord retainer |
| 3 | PS OK LED | 7 | Keying feature |
| 4 | AC power cord connector | – | – |
Figure 2: 1900WAC Platinum Certified Power Supply
| 1 | 1900 W AC power supply module | 5 | AC power cord connector |
|---|---|---|---|
| 2 | Keying feature | 6 | Release latch |
| 3 | AC OK LED | 7 | Power cord retainer |
| 4 | PS OK LED |
Figure 3: 715W DC Power Supply
| 1 | 715 W DC power supply module | 6 | Input power terminal (positive polarity) |
|---|---|---|---|
| 2 | DC OK LED | 7 | Input power terminal (negative polarity) |
| 3 | PS OK LED | 8 | Grounding terminal |
| 4 | Release latch | 9 | Terminal block safety cover |
| 5 | Extraction handle | – | – |
If no power supply is installed in a power supply slot, install a power supply slot cover.
| 1 | Release handles | 2 | Retainer clips |
|---|
Table 2: Switch Power Supply Module LEDs
| AC or DC OK | Description | PS OK | Description |
|---|---|---|---|
| Off | No AC or DC input power. | Off | Output is disabled, or input is outside |
operating range (LED is off).
Green| AC or DC input power present.| Green| Power output to switch active.
Red| Output has failed.
Installation Guidelines
Observe these guidelines when removing or installing a power supply or fan module:
- Do not force the power supply or fan module into the slot. This can damage the pins on the switch if they are not aligned with the module.
- A power supply that is only partially connected to the switch can disrupt the system operation.
- Remove power from the power-supply module before removing or installing the module.
- The power supply is hot-swappable. In some configurations, such as full PoE+ or power-sharing mode, removing a power supply causes powered devices to shut down until the power budget matches the input power of a single power supply. To minimize network interruption, hot-swap the power supply under these circumstances:
- The switch is in StackPower mode and sufficient power is available.
- The switch is powered by other switches in a power stack, and no active backup is in progress.
For the switch commands that display available power budget, see the software configuration guide.
Caution
Do not operate the switch with one power-supply module slot empty. For
proper chassis cooling, both module slots must be populated, with either a
power supply or a blank module.
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
-
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
-
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
-
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030 -
If a Cisco external power system is not connected to the switch, install the provided connector cover on the back of the switch.
Statement 386
Installing or Replacing an AC Power Supply
Procedure
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.
Caution Do not leave the power-supply slot open for more than 90 seconds
while the switch is operating.
This unit might have more than one power supply connection. All connections
must be removed to de-energize the unit. Statement 1028
Warning
Step 5 Insert the new power supply into the power supply slot, and gently
push it into the slot. When correctly inserted, the 350 W and 715 W power
supplies (excluding the power cord retainer) are flush with the switch rear
panel.
The 1100 W power supply modules extend 1.5 inches and 1900 W power supply
modules extend 1.5 inches from the switch rear panel.
Figure 5: 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 or use the cable-tie retainer clip on the 1900 W supply.
Figure 6: 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.
Installing a DC Power Supply
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
-
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003 -
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than: 20 A. Statement 1005
-
A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement 1022
-
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).
Equipment That You Need
- Ratcheting torque screwdriver with a number-2 Phillips head that exerts up to 15 pound-force inches (lbf-in.) of pressure.
- Panduit crimping tool with optional controlled-cycle mechanism (model CT-720, CT-920, CT-920CH, CT-930, or CT-940CH).
- Wire-stripping tools.
- 12-gauge copper ground wire (insulated or not) for the single-hole ground connection.
- 8-gauge copper ground wire (insulated or not) for the dual-hole ground connection.
- Dual-hole ground lug and two screws (included in the DC power supply accessory kit) and single-hole ground lug and screw (included in the switch accessory kit). The dual-hole lug is required for the grounding of the switch in NEBS installations where the DC supply is the only NEBS compliant power supply option.
- Four leads of 14-gauge copper wire.
- Four fork-type terminals from the DC power supply accessory kit. The terminals must be the proper size for M3 screws in a Dinkle DT-35-B25-style terminal block.
- M5 screws for 12 AWG wire connection for NEBS installations.
Grounding the Switch
Follow these steps to install either a single-hole ground lug or a dual-hole ground lug on the switch. Make sure to follow any grounding requirements at your site.
Before you begin
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
- When installing or replacing the unit, the ground connection must always be made first and disconnected last.
Statement 1046
Caution
Follow the grounding procedure instructions, and use a UL-listed lug
(included in the accessory kit).
- To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, connect the (Management Ethernet) ports only to intra-building or unexposed wiring or cable. The intrabuilding cable must be shielded and the shield must be grounded at both ends. The intra-building port(s) of the equipment or subassembly must not be metallically connected to interfaces that connect to the OSP or its wiring. These interfaces are designed for use as intra-building interfaces only (Type 2 or Type 4 ports as described in GR-1089-CORE) and require isolation from the exposed OSP cabling. The addition of Primary Protectors is not sufficient protection in order to connect these interfaces metallically to OSP wiring.
Procedure
Step 1 Use the ground lug screw and the lug ring for single-ground
connections. Use the dual-hole lug for ground connections for 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). Stripping more than the recommended amount of wire can
leave exposed wire from the connector. Use 12-gauge copper ground wire for the
single-ground connection. Use 8-gauge copper ground wire for the dual-ground
connection.
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.
Step 5 Use the ground screw to attach the single-hole ground lug to the switch rear panel. Use two ground screws to attach the dual-hole ground lug to the switch rear panel.
| 1 | Attaching the single-hole ground lug | 2 | Attaching the dual-hole ground lug |
|---|
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.
Installing the DC Power Supply in the Switch
Before you begin
Before installing the power supply, see the Installation Guidelines, on page
5.
Procedure
Step 1 Verify that the power supply is not connected to any power
sources.
Step 2 Remove the plastic safety cover from the power supply terminal
blocks.
Note 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. When correctly installed, the DC power supply (excluding the
extraction handle) is flush with the switch rear panel.
Step 6 Connect the input power as described in Wiring the DC Input Power Source, on page 12.
Wiring the DC Input Power Source
Procedure
Step 1 Using a wire-stripping tool, strip the 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.
Connect the ground wire to a grounded metal rack or to earth ground if the
switch is not in a grounded rack.
Step 4 Torque all terminal block screws to 11 lbf-in.
Step 5 Replace the terminal block safety cover and turn on the power at
the power source.
Step 6 Confirm that the power supply DC OK and PS OK LEDs are green.
Finding the Power Supply Module Serial Number
If you contact Cisco Technical Assistance regarding a power supply module, you need to know the serial number. See the following illustrations to find the serial number. You can also use the CLI to find out the serial number.
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