This section describes how to install the ground cable on the FCC.

The FCC fixed configuration DC power system provides 8,800 watts to power the chassis.

Due to its power load zones, the FCC using fixed configuration power requires a total of eight dedicated 60 A DC input power connections, two for each DC PEM, to provide DC power to all six power zones. We recommend that you have two separate, redundant –48 VDC power battery sources to provide power to the FCC. Connect the four “A” 60 Amp DC inputs to the upper power shelf to one battery, and the four “B” 60 Amp inputs to the lower power shelf to the other battery.

At sites where the FCC is equipped with a DC-input power shelf and DC PEMs, observe the following guidelines:

• All power connection wiring should follow the rules and regulations in the National Electrical Code (NEC) and any local codes.
• Each DC-input PEM connection is rated at 60 A maximum. A dedicated, commensurately rated DC power source is required for each PEM connection.
• For DC power cables, we recommend that you use commensurately rated, high-strand-count copper cable. Each DC PEM requires two DC inputs of nominal –48/–60 VDC, 60 A service. Each DC input consists of one pair of cable leads, source DC (–) and source DC return (+). Each power shelf requires one grounding cable. The length of the cables depends on your router location. These cables are not available from Cisco Systems; they are available from any commercial vendor.
• DC power cables must be terminated by cable lugs at the power shelf end. The lugs should be dual-hole and able to fit over M6 terminal studs at 0.63 in (5/8 inch) (1.60 cm) centers. For example, Panduit part number LCD2-14A-Q; see this figure.
• Maximum wire size at the DC input terminal block is 2 AWG.

Figure 6. DC Power Cable Lug

The following figure shows a typical DC power distribution scheme. The ground cable is to the far left on the shelf. The DC terminal block power connector studs have a 20 in.-lb (2.26 N-m) torque value; the power shelf ground cable connector studs have a 30 in.-lb (3.39 N-m) torque value.

The color coding of the source DC power cable leads depends on the color coding of the site DC power source. Typically, green or green and yellow indicates that the cable is a ground cable. Follow your local practices for cable color code and markings. You must ensure that the power cables are connected to the DC-input power shelf terminal studs in the proper positive (+) and negative (–) polarity.

Sometimes, the source DC cable leads might have a positive (+) or a negative (–) label, but you must verify the polarity by measuring the voltage between the DC cable leads. When making the measurement, the positive (+) lead and the negative (–) lead must always match the (+) and (–) labels on the power shelf.

Caution

The DC-input PEM contains circuitry to trip the breaker on the PEM if it detects a reverse-polarity condition. When installing DC power cables, make sure that the polarity of the DC input wiring is correct.

This figure shows the cable wiring on the rear of the fixed configuration DC power shelf.

Figure 7. Fixed Configuration DC Power Shelf Cable Wiring

This table lists the DC input current and voltage specifications.

Each wiring block on the power shelf contains two sets of terminals, one positive and one negative, and is covered by a plastic terminal block cover that snaps onto the power shelf and is secured by a screw to a torque value of 4 to 5 in.-lb (.46 to .58 N-m). You must remove the terminal block cover or rotate it out of the way before you work with the cables.

For additional power details, see Appendix 1, “Cisco CRS-1 Carrier Routing System Fabric Card Chassis Specifications” or Cisco CRS Carrier Routing System Multishelf System Description .

The FCC modular configuration DC power system can provide up to 12,600 watts to power the chassis. However, by default, the power capability of a system when shipped, with four DC PMs per shelf, is 8,400 watts.

Note	Depending on the hardware deployed at your site, your system may not consume the maximum power supplied by the power system.

Each modular configuration DC power shelf supports up to six DC PMs. The power shelves and DC PMs are field replaceable.

This figure shows the cables and terminal block covers for the modular configuration power shelf.

Figure 8. DC Power Shelf Cable Wiring for Modular Configuration Power Shelf

Each power shelf operates with up to six DC inputs of –48/–60 VDC (nominal), 60 A. The power shelf accepts input DC power in the range –40 to –72 VDC.

This table lists the modular configuration DC input current and voltage specifications.

Each wiring block on the modular configuration DC power shelf contains two sets of terminals, one positive and one negative, and is covered by a plastic terminal block cover that is secured by a screw to a torque value of 5 to 7 in-lb (0.56 to 0.79 N-m). Each DC power cable is connected to the power shelf with a torque value of 20 in-lb (2.26 N-m). Maximum wire size at the DC input terminal block is 2 AWG.

The power supply terminal posts are centered 0.63 inches (5/8 inch) (1.60 cm) apart and are M6-threaded. We recommend that you use an appropriately sized 180-degree angle (straight) industry standard 2-hole, standard barrel compression lug, as shown in this figure.

Figure 9. DC Power Cable Lug

The power shelf grounding is accomplished by installing an external ground bracket between the power shelves and attached to the chassis. The bolts that connect the external grounding brackets to the chassis and the power shelf have a torque value of 30 in-lb (3.39 N-m).

For additional power details, see Appendix 1, “Cisco CRS-1 Carrier Routing System Fabric Card Chassis Specifications” or Cisco CRS Carrier Routing System Multishelf System Description .

In both power configurations, the DC input-power-present LEDs provide a visual indication to service personnel that the is voltage present across the input terminal connection. The figure titled Input-Power-Present LEDs-Fixed Configuration DC Power Shown shows the DC input-power-present LEDs on the rear of the fixed configuration DC power shelf. The modular configuration DC power shelf has similar visual indicators. The LED provides a warning to service personnel that there is power present.

Note	Power should be disconnected before servicing the input power connections.

This figure shows the input-power-present LEDs on the rear of the fixed configuration DC power shelf.

Figure 10. Input-Power-Present LEDs—Fixed Configuration DC Power Shown

This figure shows the input-power -present LEDs on the rear of the fixed configuration DC power shelf.

Figure 11. Input-Power-Present LEDs—Modular Configuration DC Power Shown

The input-power-present LED starts to light up when the voltage reaches –20 VDC and the LED gets brighter as voltage increases; the input-power-present LED is fully lit when input voltage reaches –38 VDC.

Caution

If the input voltage polarity is reversed, or if the LED circuit fails, the LED will not light. When this is the case, service personnel should check for hazardous voltages before working on the unit.

In both configurations, a conductor must be large enough to meet the voltage loss requirement of your facility. Also, the protective earth conductor must be large enough to carry all the current if the –48 VDC return fails. This latter requirement is for safety.

For site preparation, proper cable size and insulation shall be selected. For a planned power distribution, calculation shall be done prior to meet the proper voltage drop and temperature rise.

The FCC fixed configuration AC power system provides 13,200 watts to power the chassis.Two versions of the 3-phase AC power shelf are available to provide either an AC Delta or an AC Wye input configuration. Each of the AC power shelf versions has a different Cisco part number to distinguish the Wye from the Delta configuration. The AC connections to the FCC are made to terminal blocks on the AC power shelves that have been hard wired for Wye or Delta configuration. All chassis should have two power shelves of the same type, that is, two Delta or two Wye AC power shelves.

In the fixed configuration power system, each power shelf supports three AC-to-DC rectifiers that are field replaceable. The AC-to-DC rectifiers convert 200-to-240 VAC power to –54 VDC used by the FCC chassis.

The AC Wye power shelf has a Wye 3-phase, 5-wire connection: 200 to 240 (L-N)/346 to 415 (L-L) VAC, 3W+N+PE, 50 to 60 Hz, 25 A. For redundant operation, two 3-phase Wye branch circuits are required: 32 A (International), with one power connection to each power shelf.

The AC Delta power shelf has a Delta 3-phase, 4-wire connection: 200 to 240 VAC, 3-phase, 3W+PE, 50 to 60 Hz, 42 A. For redundant operation, two 3-phase Delta 60-A branch circuits are required, with one power connection to each power shelf.

Note	The power cables for the fixed configuration AC power shelves do not arrive preattached and need to be installed.

For additional power details, see Appendix 1, “Cisco CRS-1 Carrier Routing System Fabric Card Chassis Specifications” or Cisco CRS Carrier Routing System Multishelf System Description .

The FCC modular configuration AC power system can provide up to 18,000 watts to power the chassis. However, by default, the maximum power capability of a system when shipped with three AC PMs is 9,000 watts.

Each modular configuration power shelf supports up to six PMs. The power shelves and PMs are field replaceable.

Note	Depending on the hardware deployed at your site, your system may not consume the maximum power supplied by the power system.

Unlike the fixed configuration AC power system, which requires 3-phase AC Delta and AC Wye input power, the modular configuration AC power system requires single-phase AC input power. If you have 3-phase AC Delta or AC Wye at your site, a Cisco CRS Power Distribution Unit will be required to convert 3-phase input power to single phase input power for the power shelf. For further information, refer to Cisco CRS Power Distribution Unit Quick Start Guide.

The modular configuration AC power shelf has the following input VAC power requirements:

• Single-phase, 200 to 240 VAC nominal, 50 to 60 Hz, 16 A.Each power shelf contains six IEC-320-C22 receptacles which can accept up to six IEC-320-C21 connector female cords.

Note

If you have a Cisco CRS 3-Phase AC PDU installed, either three or six AC PMs are required to be installed in each modular configuration AC power shelf to maintain a balanced 3-phase power load. If only three AC PMs are required in each power shelf, they must be installed in either slots 0, 1, 2 or slots 3,4,5.

Note	We recommend that you use appropriate short-circuit protection in compliance with national and local electrical codes.

For additional power details, see Appendix 1, “Cisco CRS-1 Carrier Routing System Fabric Card Chassis Specifications” or Cisco CRS Carrier Routing System 16-Slot Line Card Chassis System Description .

Before performing this task, you must first remove the upper grille on the front (SFC) side of the chassis, if installed.

Note	Do not install the power shelf in the chassis with AC rectifiers, DC PEMs, or alarm module installed in the power shelf.

You need the following tools and parts to perform this task:

• ESD-preventive wrist strap
• 1/4-in. x 6-in. long slotted screwdriver
• Fixed configuration AC or DC Power shelf
  • AC Wye power shelf Cisco product number: CRS-FCC-PS-ACW=
  • AC Delta power shelf Cisco product number: CRS-FCC-PS-ACD=
  • DC power shelf Cisco product number: CRS-FCC-PS-DC=

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Make sure that the power I/0 switch on the shelf, located on the front [SFC] side of the chassis, is in the OFF position.

3.    The lever handles are fastened down for shipment. Use the screwdriver to turn the two captive screws, one on each lever handle, to unfasten them.

4.    Holding the power shelf underneath with one hand and steadying it with the other, lift the shelf up and slide it partway into one of the power shelf slots on the front (SFC) side of the chassis.

5.    Slide the power shelf fully into the chassis and lift the lever handles up to lock the tray into position. Be sure to align the guide pins on the chassis with the holes on the power shelf.

6.    Use the screwdriver to turn the two captive screws on the lever handles of the power shelf clockwise to attach them to the interior of the shelf.

7.    Use the screwdriver to turn the four captive screws on the interior of the power shelf clockwise to firmly anchor the shelf to the sides of the chassis.

After performing this task, wire the power shelf (see the Installing Fixed Configuration AC Power Shelf Cord, and the Installing Fixed Configuration DC Power Shelf Wiring), install the power modules (see the Installing an AC Rectifier or DC PEM), and install the alarm modules (see the Installing a Fixed Configuration Alarm Module).

Before performing this task, remove the upper grille on the front (SFC) side of the chassis, if installed.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 1/4-in. x 6-in. long slotted screwdriver

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Move the shelf power I/O switch, located on the front [SFC] side of the chassis, to the OFF position.

3.    For AC, at the AC service circuit breaker box open all associated equipment circuit breakers for shelf(s) to be removed. Use the lockout and tag procedures per your local practices. Unplug the power cord from the receptacle and then remove the power leads from the power block. Refer to the c_​Removing_​Fixed_​Configuration_​AC_​Power_​Shelf_​Wiring_​1180533.xml.For DC, At the BDFB or power plant, remove the associated fuses / circuit breakers for shelf(s) to be removed. Use the lockout and tag procedures per your local practices. Remove DC distribution cables from the rear of the associated power shelf and tape the bare lugs for protection. Refer to the c_​Removing_​Fixed_​Configuration_​DC_​Power_​Shelf_​Wiring_​1193337.xml for more information.

4.    Remove all power modules (three AC rectifiers in an AC power shelf or two DC PEMs in a DC power shelf) from the shelf you are removing. (See the c_​Removing_​an_​AC_​Rectifier_​or_​DC_​PEM_​1069631.xml.)

5.    Remove the alarm module. (See the “Removing a Fixed Configuration Alarm Module” section.)

6.    While facing the front (SFC) side of the chassis, use the screwdriver to loosen the four captive screws (two on each side) on the interior of the power shelf by turning them counterclockwise.

7.    Use the screwdriver to loosen the two lever screws on the front panel of the power shelf by turning them counterclockwise.

8.    Pull the lever handles down with both hands and slide the power shelf partway from the slot in the chassis.

9.    Once the power shelf is partially removed using the handles, grab both sides of the power shelf and continue to remove fully.

10.    Set the power shelf carefully aside.

After performing this task, you may install a replacement power shelf (see the c_​Installing_​a_​Fixed_​Configuration_​Power_​Shelf_​1189509.xml#con_​1189509).

Before performing this task, ensure that both power shelves are installed in the chassis and remove the upper grille on the rear (OIM) side, if installed.

Note	Before installing the AC power cord on the power shelf, make sure that the input power cord is not plugged into the facility power.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• Stripping tool to remove power cable conductor insulation
• 1/4-in. x 6-in. long slotted screwdriver
• Torque screwdriver with 1/4-in. slotted head and rated accuracy at 9 in-lb (1.04 N-m)
• Torque wrench with 10-mm 6 pt. socket and rated accuracy at 20 in.-lb (2.26 N-m)

The AC Wye power shelf arrives with a 5-wire Wye cord with an IEC 60309 plug rated 415 V/32 A, IP44, 3W+N+PE; it is 4 meters long. The power shelf has five corresponding terminations: three active (“hot”), one neutral, and one ground. The ground lug and terminal block are located behind a removable cover on the rear of the power shelf. The terminal block contains four terminations to attach the three active cable conductors and one neutral cable conductor from the input power cord. The ground cable conductor from the input power cord is attached to the ground lug.

The rear of the AC Wye power shelf is shown in this figure.

Figure 13. AC Wye Power Cord

Note	Leads 1, 2 and 3 (L1, L2, and L3) are not associated with any particular color of cable conductor because they are not connected to neutral (L4) or the safety ground (5).

Note	We recommend that you rotate the L1, L2, and L3 wiring connection for the two power shelves to improve system availability due to common phase outage.

Note	The ground cable conductor connector nuts have a 20 in-lb (2.26 N-m) torque value, and the power cable conductor connector screws on the terminal block have a 9 in-lb (1.04 N-m) torque value.

The AC Delta power shelf arrives with a 4-wire Delta cord with an IEC 60309 plug rated 250 V/60 A, IP67, 3W+PE; it is 4 meters long. The power shelf has four corresponding terminations: three active (“hot”) and one ground. The ground lug and terminal block are located behind a removable cover on the rear of the power shelf. The terminal block contains three terminations to attach the three active cable conductors from the input power cord. The ground cable conductor from the input power cord is attached to the ground lug.

The rear of the AC Delta power shelf is shown in this figure:

Figure 14. AC Delta Power Cord

Note	L1, L2, and L3 are not associated with any particular color of cable conductor as long as they are not connected to neutral or the safety ground (4).

Note	We recommend that you rotate the L1, L2, and L3 wiring connection for the two power shelves to improve system availability due to common phase outage.

Note	The ground cable conductor connector screws have a 20 in-lb (2.26 N-m) torque value, and the power cable conductor connector screws on the terminal block have a 9 in-lb (1.04 N-m) torque value.

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    For AC Wye only, choose your neutral cable conductor; white is usually neutral. Be sure to perform a continuity check with a volt meter to verify that the neutral pin (labeled with an “N” on the plug) is connected to the neutral cable conductor.

3.    Remove the rear cover from the power shelf.

4.    The shelf arrives with two wiring holes for the power cable. Choose the wiring hole for your cable and remove the knock-out plug, if needed.

5.    Ensure that the insulating layer has been removed from the cable conductor ends.

6.    Insert the AC power cord and tighten the cable bushing lock nut.

7.    Remove the M6 nut from ground connection (green cable conductor is typically ground), attach the ground cable conductor, and tighten the nut (ground cable conductor has a closed-ring connector) to a torque value of 20 in-lb (2.26 N-m).

8.    For AC Wye only, connect the neutral cable conductor to the terminal block by backing out the left side terminal block screw, inserting the cable conductor, and tightening the screw to a torque value of 9 in-lbs (1.04 N-m). Do not loosen the screw on the right side of the terminal block.

9.    Connect the other three active cable conductors in the same way as the neutral cable conductor. Back out the left side terminal block screw, insert the cable conductor, and tighten the screw to a torque value of 9 in-lbs (1.04 N-m). Do not loosen the screw on the right side of the terminal block.

After performing this task, the AC rectifiers can be installed. See the c_​Installing_​an_​AC_​Rectifier_​or_​DC_​PEM_​1069591.xml for more information.

Before performing this task, power down and remove the AC rectifiers and the alarm module from the shelf you want to disconnect. Remove the upper grille on the rear (OIM) side of the chassis, if installed.

Note	Before removing AC power cords from the power shelf, make sure that the input power cords are not energized.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 3/8-in. ratchet wrench with 10-mm socket
• 1/4-in. x 6-in. long slotted screwdriver

The rear of the AC Wye power shelf is shown in this figure.

Figure 15. AC Wye Power Cord

Note	Leads 1, 2, and 3 (L1, L2, and L3) are not associated with any particular color of cable conductor because they are not connected to neutral (L4) or the safety ground (5).

Note	When removing AC power cords from the fixed configuration power shelf, be sure to remove the ground cable conductor last.

The rear of the AC Delta power shelf is shown in this figure.

Figure 16. AC Delta Power Shelf Cord

Note	Leads 1, 2, and 3 (L1, L2, and L3) are not associated with any particular color of cable conductor because they are not connected to neutral or the safety ground (4).

Note	When removing AC cords from the fixed configuration power shelf, be sure to remove the ground cable conductor last.

Before performing this task, ensure that both power shelves are installed in the chassis. Remove the upper grille on the rear (OIM) side of the chassis, if installed.

Note	Before installing wiring on the power shelf, make sure that the input power cables are not energized.

Note	If the cables are wrapped with black electrical tape, be sure to remove tape from the cables before installing cabling on the power shelf.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 3/8 in. ratchet wrench with 10-mm socket
• Crimping tool and lug specific die
• Multimeter
• Torque wrench with 10-mm 6 pt. socket and rated accuracy at 30 in.-lb (2.26 N-m)
• Torque wrench with 10-mm 6 pt. socket and rated accuracy at 20 in.-lb (2.26 N-m)

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Remove the terminal block cover.

3.    Verify the following resistance values:

4.    Use the crimping tool mandated by the lug manufacturer to crimp the lugs to the DC-input cables and the power shelf grounding cable. For details on lugs, see the c_​DC_​Power_​Systems_​1062204.xml.

5.    Using a 10-mm socket wrench, attach the ground cable to the ground cable terminal. Then use the torque wrench to tighten to a torque of 30 in.-lb (3.39 N-m).

6.    Using the wrench, attach the positive and negative cables to each terminal block. Then use the torque wrench to tighten to a torque of 20 in.-lb (2.26 N-m).

7.    Reattach the terminal cover with a phillips screwdriver. Insert and tighten the screw holding the cover to the wiring terminal block.

After the power shelf wiring has been connected, the DC PEMs can be installed. For more information, see the c_​Installing_​an_​AC_​Rectifier_​or_​DC_​PEM_​1069591.xml.

Before performing this task, power down and remove the DC PEMs and the alarm module from the shelf you want to disconnect. Remove the upper grille on the rear (OIM) side of the chassis, if installed.

Note	Before removing wiring from the power shelf, make sure that the input power cables are not energized.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 3/8-in. ratchet wrench with 10-mm socket

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Remove the terminal block cover

3.    Using the 10-mm socket wrench, remove the positive and negative cables from each terminal block.

4.    Using the wrench, remove the ground cable from the ground cable terminal.

5.    Replace the terminal block covers.

After the power shelf wiring has been disconnected, the power shelf can be removed. For more information, see the Removing a Fixed Configuration Power Shelf section.

Before performing this task, you must first remove the upper grille on the front (SFC) side of the chassis, if installed.

You need the following tool and part to perform this task:

• ESD-preventive wrist strap
• Fixed configuration AC rectifier or DC PEM
  • AC rectifier Cisco product number CRS16-AC-RECT=
  • DC PEM Cisco product number CRS16-DC-PEM=)

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Turn the power switch to the OFF position.

3.    While facing the front (SFC) side of the chassis, press the ejector lever release button at the top of the AC rectifier or DC PEM to release the ejector lever.

4.    Pivot the ejector lever away from the module faceplate.

5.    Using two hands to support and guide the AC rectifier or DC PEM, slide it into the power system shelf until the connector on the back of the module just makes contact with the connector on the backplane of the power shelf.

6.    Seat the power module in the power shelf backplane by pivoting the ejector lever to hook the slot on the floor of the power shelf and then pushing the ejector lever until it is flush with the power module faceplate. You hear a click when the ejector lever locks into place.

7.    Push the power tab at the bottom front of the power module in to the ON position.

After performing this task, replace the upper grille on the front (SFC) side of the chassis.

Before performing this task, you must first remove the upper grille on the front (SFC) side of the chassis, if installed.

You need the following tool to perform this task:

• ESD-preventive wrist strap

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    While facing the front (SFC) side of the chassis, pull the power tab at the bottom front of the module out to the OFF position.

3.    Press the ejector lever release button at the top of the power module to release the ejector lever.

4.    Pivot the ejector lever away from the power module faceplate to eject the module from the power shelf backplane connector.

5.    Grasp the power module handle and pull the module halfway from the bay. Be sure not to pull the module by the ejector lever, but rather by the handle only.

6.    Be sure to support the module while you slide the module completely from the bay.

7.    Set the power module carefully aside.

After performing this task, install a replacement AC Rectifier or DC PEM if necessary (see the c_​Installing_​an_​AC_​Rectifier_​or_​DC_​PEM_​1069591.xml) and replace the upper grille on the front (SFC) side of the chassis.

Before performing this task, you must first remove the upper grille on the front (SFC) side of the chassis, if installed.

You need the following tools and part to perform this task:

• ESD-preventive wrist strap
• 6-in long number 1 Phillips screwdriver
• Fixed configuration alarm module (Cisco product number CRS-16-ALARM=)

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Using two hands to support and guide the alarm module, slide it into the far right bay on the power shelf (as you face the front [SFC] side of the chassis) until the connector on the back of the alarm module just makes contact with the connector on the backplane of the power shelf. Verify that the guide pin on the chassis front panel is correctly aligned with the hole on the front of the alarm module.

3.    Seat the alarm module in the power shelf backplane by pressing it firmly to the power shelf backplane connector.

4.    Use the Phillips screwdriver to turn the captive screw at the bottom of the alarm module clockwise to seat the alarm module connectors in the connectors on the power shelf interface panel.

After performing this task, replace the upper grille on the front (SFC) side of the chassis.

Before performing this task, you must first remove the upper grille on the front (SFC) side of the chassis, if installed.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 6-in long number 1 Phillips screwdriver

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Use the screwdriver to loosen the captive screw that fastens the alarm module to the front (SFC) side of the chassis.

3.    Grasp the alarm module and pull it halfway from the bay.

4.    Use your free hand to support the alarm module while you slide the alarm module completely from the bay.

5.    Set the alarm module carefully aside.

After performing this task, install a replacement alarm module (if necessary) and replace the upper grille on the front (SFC) side of the chassis.

Before performing this task, you must install and wire the power shelves, and install the AC rectifiers, alarm modules, SCGE cards, and exterior cosmetic components. See the c_​Installing_​a_​Fixed_​Configuration_​Power_​Shelf_​1189509.xml, the c_​Installing_​Fixed_​Configuration_​AC_​Power_​Shelf_​Cord_​1177594.xml or c_​Installing_​Fixed_​Configuration_​DC_​Power_​Shelf_​Wiring_​1193289.xml, the c_​Installing_​an_​AC_​Rectifier_​or_​DC_​PEM_​1069591.xml, the c_​Installing_​a_​Fixed_​Configuration_​Alarm_​Module_​1069674.xml, and Installing and Removing Exterior Cosmetic Components chapter for more information.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• Multimeter
• 1/4-in. x 6-in. long slotted screwdriver

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Make sure that the safety ground wiring is connected.

3.    Make sure that the facility power breakers for the upper (PS0) and lower (PS1)power shelves are in the OFF position.

4.    Make sure that all the I/O switches are in the OFF position. That is, make sure all I/O levers are pulled out. There are total of six I/O levers for the AC power rectifiers (one for each of the six AC rectifiers) and two I/O levers for the AC power shelves (one for each power shelf).

5.    Make sure all SFCs are pulled-out and disconnected from the backplane.

6.    Remove the cover plate from the rear of the AC power shelves.

7.    Plug in AC power cords.

8.    For AC Delta and AC wye, verify the following resistance values (see Figure 1 and Figure 1):

9.    Make sure that each input power cable is connected, and energize the facility breaker to each input.

10.    Measure the voltage between the following:

11.    Turn the facility breaker for the upper power shelf (PS0) to the OFF position. Repeat for the facility power breaker for the lower power shelf (PS1).

12.    Turn the facility breaker for the upper power shelf (PS0) to the ON position. Repeat for the facility power breaker for the lower power shelf (PS1).

13.    Turn the power shelf I/O switches on both power shelves (PS0 and PS1) to the ON position. Verify that the “CBREAKER TRIP” LED on the front panel of each power rectifier is yellow and that no other LEDs are active.

14.    Turn the first power rectifier (A0; see Figure 1) power switch on the upper power shelf (PS0) to the ON position. Verify that the “PWR OK” LED on the power rectifier (A0) front panel is green and that no other LEDs are active. Repeat for the other two rectifiers (A1 and A2; see Figure 1).

15.    Turn the first power rectifier (B0; see Figure 1) I/O switch on the lower power shelf (PS1) to the ON position. Verify that the “PWR OK” LED on the power rectifier (B0) front panel is green and that no other LEDs are active. Repeat for the other two rectifiers (B1 and B2; see Figure 1).

16.    Turn the I/O switches on all power rectifiers and both power shelves to the OFF position. Verify that no LEDs on the power rectifier front panels are active.

17.    Insert all boards into the chassis (see Installing and Removing Fabric Cards and Card Components chapter).

18.    Turn the power shelf I/O switches (PS0 and PS1) to the ON position.

19.    Turn all power rectifier I/O switches to the ON position.

20.    Measure the input voltage of each input and compare this value to the voltage measurement noted in step 7. Verify that the voltage is between 200 to 240 VAC, ensure that the voltage drop is within the acceptable limits for your site.

21.    Turn the I/O switches on all power rectifiers and both power shelves to the OFF position. Turn the facility breaker for the upper power shelf (PS0) to the OFF position. Repeat for the facility power breaker for the lower power shelf (PS1).

22.    Replace the cover plate on the rear of the AC power shelves.

23.    Turn the facility breaker for the upper power shelf (PS0) to the ON position. Repeat for the facility power breaker for the lower power shelf (PS1).

24.    Turn both power shelf I/O switches (PS0 and PS1) to the ON position. Turn all power rectifier I/O switches to the ON position.

Note	For appropriate SFC LED information, see the appropriate section in Installing and Removing Fabric Cards and Card Components chapter or the specific documentation for the card.

To power down the chassis entirely, you must power down both of the power shelves by moving the power shelf I/O switch to the OFF position by lifting up on the lever and pulling it out. Both power shelves must be disconnected to de-energize the chassis completely.

Note	All AC power cords must be de-energized to fully remove power from the chassis.

This table shows the meaning of the LED status lights on the front panel of the AC power rectifiers in the fixed configuration power system.

Before performing this task, you must install and wire the power shelves, and install the DC PEMs, alarm modules, SCGE cards, and exterior cosmetic components. See thec_​Installing_​a_​Fixed_​Configuration_​Power_​Shelf_​1189509.xml, the c_​Installing_​Fixed_​Configuration_​AC_​Power_​Shelf_​Cord_​1177594.xml or c_​Installing_​Fixed_​Configuration_​DC_​Power_​Shelf_​Wiring_​1193289.xml,the c_​Installing_​an_​AC_​Rectifier_​or_​DC_​PEM_​1069591.xml, the c_​Installing_​a_​Fixed_​Configuration_​Alarm_​Module_​1069674.xml, the Installing an SCGE Card section and Installing and Removing Exterior Cosmetic Components chapter for more information. Wiring at the BDFB or at the power plant should be complete.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• Multimeter

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Verify that the safety ground wiring is connected to the upper and lower power shelves.

3.    Make sure that the facility power breakers for the upper (PS0) and lower (PS1) power shelves are in the OFF position.

4.    Make sure that all the I/O switches are in the OFF position. That is, make sure all I/O levers are pulled out. There are total of four I/O levers for the DC PEMs (one for each of the four DC PEMs) and two I/O levers for the DC power shelves (one for each power shelf).

5.    Make sure all SFCs are pulled-out and disconnected from the backplane.

6.    Energize the facility breaker to PEM 0, input 1 on the upper power shelf, PS0.

7.    Measure the voltage at the input terminal block and verify that the DC voltage between the positive and negative terminals is between 48 VDC and 60 VDC. Make a note of this voltage measurement.

8.    Turn the facility breaker to the OFF position.

9.    Repeat steps 7 through 9 for each of the remaining three DC inputs on the upper power shelf, PS0.

10.    Repeat steps 7 through 9 for each of the four DC inputs on the lower power shelf, PS1.

11.    Turn the facility power breakers for the upper power shelf, PS0, to the ON position. Repeat for the lower power shelf, PS1.

12.    Turn the upper power shelf (PS0; see Figure 1) I/O switch to the ON position. Verify that the “CBREAKER TRIP” LED on the front panel of each DC PEM is yellow and that no other LEDs are active.

13.    Turn the first PEM (A0; see Figure 1) I/O switch on the upper power shelf (PS0) to the ON position. Verify that the “PWR OK” LED on the front panel of the DC PEM is green and that no other LEDs are active. Repeat for the other DC PEM (A1; see Figure 1).

14.    Turn the lower power shelf (PS1; see Figure 1) I/O switch to the ON position. Verify that the “CBREAKER TRIP” LED on the front panel of the DC PEM is yellow and that no other LEDs are active.

15.    Turn the first DC PEM (B0; see Figure 1) I/O switch on the lower power shelf (PS1) to the ON position. Verify that the “PWR OK” LED on the front panel of the DC PEM is green and that no other LEDs are active. Repeat for the other DC PEM (B1; see Figure 1).

16.    Turn the I/O switches on all PEMs and both power shelves to the OFF position. Verify that no LEDs on the PEM front panels are active.

17.    Insert all boards into the chassis (see Installing and Removing Fabric Cards and Card Components chapter).

18.    Turn the power shelf (PS0 and PS1) I/O switches to the ON position.

19.    Turn all DC PEM I/O switches to the ON position.

20.    Measure the input voltage of each input and compare this value to the voltage measurement noted in step 7. Verify that the equipment is still receiving the correct input voltage measured in step 7.

Remove the upper grilles on the front and rear of the chassis, if installed. Verify that the power shelf that you are about to install is the correct power shelf.

Note	Do not install the power shelf in the chassis with AC or DC PMs, or alarm module installed in the power shelf.

You need the following tools to perform this task:

• 6-in. long number 1 Phillips screwdriver
• 10-mm 6 pt. combination wrench
• Modular configuration AC or DC power shelf
  • AC power shelf (Cisco product number CRS-FCC-PSH-AC=)
  • DC power shelf (Cisco product number CRS-FCC-PSH-DC=)

1.    Using the 10-mm wrench, loosen the two bolts on the rear of the chassis that clamp the rear of the power shelf to the chassis, as shown in this figure.

2.    Install the mounting blocks on the left and right sides of the chassis. The left side is shown in this figure. A second mounting block is located on the right side.

3.    Unscrew the ejector handles from the front face of the shelf, one on each side.

4.    Holding the power shelf underneath with one hand and steadying it with the other, lift the shelf up and slide it partway into the power shelf slot on the front (SFC) side of the chassis.

5.    Grasping both handles simultaneously, push both the left and right handles up in unison to push the shelf into the chassis. See the figure Using Handles to Push the Shelf into the Chassis. Slide the shelf all the way into the chassis, pushing in the shelf until both handles hook around the pins, as shown in the figure Shelf Handles Hooked Around Pins.

6.    Use the wrench to tighten the two bolts that attach the rear of the power shelf to the rear of the chassis.

7.    Using the screwdriver, turn the captive screws at the top of the left and right handles, as shown in the figure below.

8.    Use the screwdriver to screw the shelf to the left and right mounting blocks through the handle holes. There are four holes, two on each handle, as shown in the figure.

Step 1	Using the 10-mm wrench, loosen the two bolts on the rear of the chassis that clamp the rear of the power shelf to the chassis, as shown in this figure. Figure 23. Loosening Bolts on Rear of Chassis
Step 2	Install the mounting blocks on the left and right sides of the chassis. The left side is shown in this figure. A second mounting block is located on the right side. Figure 24. Mounting Block Position in Chassis, One per Side 1 Mounting block with two screw holes. 2 Holes in chassis to be aligned with mounting block
Step 3	Unscrew the ejector handles from the front face of the shelf, one on each side. Caution    In the following step, make sure both handles swing straight up. Use care not to bend the handles sideways.
Step 4	Holding the power shelf underneath with one hand and steadying it with the other, lift the shelf up and slide it partway into the power shelf slot on the front (SFC) side of the chassis. Caution    Because of the weight of the power shelf and the rack-mounted height of the chassis, you should be especially careful while lifting and removing the power shelf. To prevent injury, keep your back straight and lift with your legs, not your back. Avoid sudden twists or lateral moves. It is safer to use two people and a ladder to install or remove the power shelf rather than a single person. After two people have placed the power shelf in position, one person can slide it into place.
Step 5	Grasping both handles simultaneously, push both the left and right handles up in unison to push the shelf into the chassis. See the figure Using Handles to Push the Shelf into the Chassis. Slide the shelf all the way into the chassis, pushing in the shelf until both handles hook around the pins, as shown in the figure Shelf Handles Hooked Around Pins. Figure 25. Using Handles to Push the Shelf into the Chassis 1 Ejector handles pulled away from shelf. 2 Ejector handles pushed up to slide in shelf. Figure 26. Shelf Handles Hooked Around Pins 1 Ejector handles section that fits around mounting pins. 2 Mounting pins which are permanently installed in the chassis and cannot be moved or removed.
Step 6	Use the wrench to tighten the two bolts that attach the rear of the power shelf to the rear of the chassis.
Step 7	Using the screwdriver, turn the captive screws at the top of the left and right handles, as shown in the figure below.
Step 8	Use the screwdriver to screw the shelf to the left and right mounting blocks through the handle holes. There are four holes, two on each handle, as shown in the figure. Figure 27. Securing the Power Shelf Ejector Handle 1 Top mounting screw in handle. 2 Holes for the screw that attaches the power shelf to the mounting block though the handle.

After the modular configuration power shelves are installed in the chassis, install the grounding lug and brackets, and AC or DC power shelf wiring. Continue to the c_​Installing_​Power_​Shelf_​Grounding_​Brackets_​1273947.xml and the c_​Installing_​AC_​or_​DC_​Power_​Self_​Wiring_​1132672.xml for instructions.

Before performing this task, remove the upper grilles on the front (SFC) side and rear (OIM) side of the chassis, AC or DC PMs, alarm module, AC or DC input wiring from the shelf you want to disconnect, and power shelf grounding brackets. For more information, see the c_​Removing_​a_​Modular_​Configuration_​Power_​Module_​1211341.xml, the c_​Removing_​a_​Modular_​Configuration_​Alarm_​Module_​1257452.xml, and the c_​Removing_​Power_​Shelf_​Grounding_​Brackets_​1200963.xml.

You need the following tools to perform this task:

• 6 in. long number 1 Phillips screwdriver
• 10-mm 6 pt. combination wrench

Caution

Do not use the handles for lifting or supporting the power shelf, since this could severely damage the handles.

Caution

Do not bend the handles sideways during any part of the removal process.

1.    Using the wrench, loosen the two bolts on the rear of the chassis that clamp the rear of the power shelf to the rear of the chassis. See this figure.

2.    Insert the screwdriver through the hole in the mounting handles, and unscrew the shelf from the right and left side of the mounting blocks. See this figure.

3.    Using the screwdriver, unscrew the captive screw on the left and right handles. There are two captive screws, one on each handle, as shown in the above figure.

4.    Grasping both handles simultaneously, pull both the left and right handles down in unison to pull the shelf partially out of the chassis.

5.    When the shelf is partially out of the chassis and the ejector handles are away from the pins, hand-tighten the handle screws back into the shelf.

6.    Slide out the shelf out so that two people can safely remove it and carefully set it down on a flat surface.

Step 1	Using the wrench, loosen the two bolts on the rear of the chassis that clamp the rear of the power shelf to the rear of the chassis. See this figure. Figure 28. Remove Bolts that Secure Rear of Power Shelf to Rear of Chassis 1 Bolts that secure rear of power shelf to rear of chassis
Step 2	Insert the screwdriver through the hole in the mounting handles, and unscrew the shelf from the right and left side of the mounting blocks. See this figure. Figure 29. Unscrewing the Power Shelf from the Mounting Blocks 1 Top mounting screw in handle. 2 Holes for the screw that attaches the power shelf to the mounting block though the handle.
Step 3	Using the screwdriver, unscrew the captive screw on the left and right handles. There are two captive screws, one on each handle, as shown in the above figure. Note    The handles will fall down and slightly away from the shelf, as shown in this figure. Figure 30. Mounting Handle Fallen Away from the Shelf 1 Initial position, with handle in place against the power shelf 2 Handle pulled down for removal of power shelf
Step 4	Grasping both handles simultaneously, pull both the left and right handles down in unison to pull the shelf partially out of the chassis.
Step 5	When the shelf is partially out of the chassis and the ejector handles are away from the pins, hand-tighten the handle screws back into the shelf.
Step 6	Slide out the shelf out so that two people can safely remove it and carefully set it down on a flat surface. Caution    Because of the weight of the power shelf and the rack-mounted height of the chassis, you should be especially careful while lifting and removing the power shelf. To prevent injury, keep your back straight and lift with your legs, not your back. Avoid sudden twists or lateral moves. It is safer to use two people and a ladder to install or remove the power shelf rather than a single person.

After performing this task, replace any front (SFC) side cosmetic covers.

Before performing this task, ensure that the chassis grounding cable and both power shelves are installed in the chassis. See the c_​Installing_​the_​Chassis_​Ground_​cable_​1298430.xml and the c_​Installing_​a_​Modular_​Configuration_​Power_​Shelf_​1249350.xml for more information. Remove the upper grille on the rear (OIM) side of the chassis, if installed.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 3/8-in. ratchet wrench with 10-mm socket
• Torque wrench with 10-mm socket and rated accuracy at 20 in.-lb (2.26 N-m)

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the rear (OIM) side of the chassis or a bare metal surface on the chassis.

2.    Align the shelf grounding bracket with the power shelves.

3.    Attach the shelf grounding bracket to both power shelves using the four M6 hex head bolts provided. Do not tighten. See this figure.

4.    Attach the grounding L-bracket to the shelf grounding bracket using the two M6 hex nuts provided. Do not tighten. See this figure.

5.    Attach the grounding L-bracket to the chassis using the two M6 hex bolts provided. Use the torque wrench to tighten the M6 hex bolts to a torque of 20 in-lb (2.26 N-m).

6.    Using the torque wrench, tighten the four M6 hex bolts attaching the grounding bracket to the power shelves to a torque of 20 in-lb (2.26 N-m).

7.    Using the torque wrench, tighten the two M6 hex nuts attaching the L-bracket to the Power shelf to a torque of 20 in-lb (2.26 N-m).

Step 1	Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the rear (OIM) side of the chassis or a bare metal surface on the chassis.
Step 2	Align the shelf grounding bracket with the power shelves.
Step 3	Attach the shelf grounding bracket to both power shelves using the four M6 hex head bolts provided. Do not tighten. See this figure.
Step 4	Attach the grounding L-bracket to the shelf grounding bracket using the two M6 hex nuts provided. Do not tighten. See this figure. Figure 31. Power Shelf Grounding Brackets 1 Chassis ground cable 5 Two M6 hex nuts attaching grounding L-bracket to shelf grounding bracket (step 4) 2 Two M6 hex bolts attaching ground lug to chassis 6 Grounding L-bracket (step 5) 3 Shelf grounding bracket (step 3) 7 Four M6 hex bolts attaching shelf grounding bracket to power shelves (step 3) 4 Two M6 hex bolts attaching grounding L-bracket to chassis (step 5)
Step 5	Attach the grounding L-bracket to the chassis using the two M6 hex bolts provided. Use the torque wrench to tighten the M6 hex bolts to a torque of 20 in-lb (2.26 N-m).
Step 6	Using the torque wrench, tighten the four M6 hex bolts attaching the grounding bracket to the power shelves to a torque of 20 in-lb (2.26 N-m).
Step 7	Using the torque wrench, tighten the two M6 hex nuts attaching the L-bracket to the Power shelf to a torque of 20 in-lb (2.26 N-m).

After the power shelf grounding brackets have been installed in the chassis, install the input wiring for the power shelf (see c_​Installing_​AC_​or_​DC_​Power_​Self_​Wiring_​1132672.xml),install the alarm module (see c_​Installing_​a_​Modular_​Configuration_​Alarm_​Module_​1257400.xml), and install the PMs (see c_​Installing_​a_​Modular_​Configuration_​Power_​Module_​1211302.xml).

Before performing this task, power down and remove any PMs and the alarm module in the shelf you want to remove, and remove the power wiring. See the c_​Removing_​a_​Modular_​Configuration_​Power_​Module_​1211341.xml, thec_​Removing_​a_​Modular_​Configuration_​Alarm_​Module_​1257452.xml, and the c_​Installing_​Modular_​Configuration_​AC_​Power_​Shelf_​Wiring_​1274070.xml for more information. Remove the upper grille on the rear (OIM) side of the chassis, if installed.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 3/8-in. ratchet wrench with 10-mm socket

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the rear (OIM) side of the chassis or a bare metal surface on the chassis.

2.    Using a 10 mm socket wrench, loosen the two M6 hex nuts that attach the L-bracket to the power shelf. Do not fully remove. See this figure.

3.    Using a 10 mm socket wrench, loosen the four M6 hex bolts that attach the grounding bracket to the power shelves. Do not fully remove. See above figure.

4.    Use a 10 mm socket wrench to remove the M6 hex bolts that attach the grounding L-bracket to the chassis. See above figure.

5.    Remove the two M6 hex nuts that attach the grounding L-bracket to the shelf grounding bracket.

6.    Remove the grounding L-bracket. See above figure.

7.    Remove the four M6 hex bolts that attach the grounding bracket to the power shelves.

8.    Remove the shelf grounding bracket from the power shelves. See above figure.

9.    If the chassis is being replaced, use the 10-mm socket wrench to remove the ground cable from the grounding point on top of the chassis rear (OIM) side panel.

Step 1	Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the rear (OIM) side of the chassis or a bare metal surface on the chassis.
Step 2	Using a 10 mm socket wrench, loosen the two M6 hex nuts that attach the L-bracket to the power shelf. Do not fully remove. See this figure. Figure 32. Power Shelf Grounding Brackets 1 Chassis ground cable 5 Two M6 hex nuts attaching grounding L-bracket to shelf grounding bracket (step 2) 2 Two M6 hex bolts attaching ground lug to chassis 6 Grounding L-bracket (step 6) 3 Shelf grounding bracket (step 8) 7 Four M6 hex bolts attaching shelf grounding bracket to power shelves (step 3) 4 Two M6 hex bolts attaching grounding L-bracket to chassis (step 4) Note    A 45-degree grounding lug is shown in the above figure. A 180-degree (straight) grounding lug can also be used.
Step 3	Using a 10 mm socket wrench, loosen the four M6 hex bolts that attach the grounding bracket to the power shelves. Do not fully remove. See above figure.
Step 4	Use a 10 mm socket wrench to remove the M6 hex bolts that attach the grounding L-bracket to the chassis. See above figure.
Step 5	Remove the two M6 hex nuts that attach the grounding L-bracket to the shelf grounding bracket.
Step 6	Remove the grounding L-bracket. See above figure.
Step 7	Remove the four M6 hex bolts that attach the grounding bracket to the power shelves.
Step 8	Remove the shelf grounding bracket from the power shelves. See above figure.
Step 9	If the chassis is being replaced, use the 10-mm socket wrench to remove the ground cable from the grounding point on top of the chassis rear (OIM) side panel. Caution    Do not remove the chassis ground cable unless the chassis is being replaced.

After the power shelf grounding brackets have been removed, the power shelf can be removed from the chassis. See c_​Removing_​a_​Modular_​Configuration_​Power_​Shelf_​1199821.xml.

This section describes how to install the DC input wiring on the modular configuration DC power shelf.

Note	When wiring the power shelf, be sure to connect the chassis ground cable and install auxiliary grounding brackets first. For more information, see the c_​Bonding_​and_​Grounding_​Guidelines_​1165801.xml and the c_​Installing_​Power_​Shelf_​Grounding_​Brackets_​1273947.xml.

Note	Do not connect the ground cables directly to the power shelf. For more information, see the c_​Installing_​Power_​Shelf_​Grounding_​Brackets_​1273947.xml.

This figure shows the cable wiring for the modular configuration DC power shelf.

Figure 33. DC Power Shelf Cable Wiring for Modular Configuration DC Power Shelf

For additional power shelf details, see Cisco CRS Series Carrier Routing System Description or Appendix 1, Cisco CRS-1 Carrier Routing System Fabric Card Chassis Specifications.

Before performing this task, ensure that both power shelves are installed in the chassis. Remove the upper grille on the rear (OIM) side of the chassis, if installed.

Caution

Before installing wiring on the power shelf, make sure that the input power cables are not energized.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• Crimping tool and lug specific die
• 3/8 in. ratchet wrench with 10-mm socket
• Torque wrench with 10-mm 6-pt. socket and rated accuracy at 20 in.-lb (2.26 N-m)

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Remove the terminal block covers.

3.    Verify the following resistance values:

4.    Use the crimping tool mandated by the lug manufacturer to crimp the lugs to the DC-input cables. For details on lugs, see the c_​DC_​Power_​Systems_​1062204.xml.

5.    Using the 10-mm 6 pt. socket wrench, attach the positive and negative cable pairs to each terminal block for both power shelves. Use the torque wrench to tighten to a torque of 20 in.-lb (2.26 N-m).

6.    Reattach the terminal covers. For more information, see the c_​Installing_​DC_​Terminal_​Block_​Covers_​1255695.xml.

This figure shows the terminal block cover.

Figure 34. DC Terminal Block Cover

Note	Install the terminal block cover after the input wiring is installed, but before the power is energized.

You need the following to perform this task:

• ESD-preventive wrist strap
• 6-in. long number 1 Phillips screwdriver

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Align the DC terminal block cover with the cover latch tab.

3.    Use the screwdriver to secure the screw into the mounting standoff, as shown in this figure.

Step 1	Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.
Step 2	Align the DC terminal block cover with the cover latch tab.
Step 3	Use the screwdriver to secure the screw into the mounting standoff, as shown in this figure. Figure 35. Securing the Terminal Block Cover 1 Screw to tighten (pre-installed on terminal block) 5 Terminal block cover 2 DC terminal block 6 Opening to align over mounting pins 3 Cover latch tab 7 Opening to align over mounting pins 4 Screwdriver securing the cover

This section describes how to install input AC cords on the rear of the modular configuration power shelf.

Note	When wiring the power shelf, be sure to connect the chassis ground cable and install auxiliary grounding brackets first. For more information, see the c_​Bonding_​and_​Grounding_​Guidelines_​1165801.xml and the c_​Installing_​Power_​Shelf_​Grounding_​Brackets_​1273947.xml .

Do not connect the ground cables directly to the modular configuration power shelf. For more information, see the c_​Installing_​Power_​Shelf_​Grounding_​Brackets_​1273947.xml .

Before performing this task, ensure that both power shelves are installed in the chassis. Remove the upper grille on the rear (OIM) side of the chassis, if installed.

If you have AC Delta or AC Wye at your equipment, ensure that two Cisco CRS PDUs are installed to convert 3-phase AC input power to single-phase AC input power for the power shelves. For further information, refer to Cisco CRS 3-Phase AC Power Distribution Unit Installation Guide .

Note	Before installing input AC cords on the power shelf, make sure that the input power cords are not energized.

You need the following tools to perform this task:

• 6 in. long number 1 Phillips screwdriver

1.    Insert the cords into the cord clamps, see this figure.

2.    Use the screwdriver to tighten the screws that clamp the cords in place, see the above figure.

Step 1

Insert the cords into the cord clamps, see this figure. Note    If you have a Cisco CRS PDU installed, the AC cords must be installed as labeled. For further information, refer to Cisco CRS 3-Phase AC Power Distribution Unit Installation Guide. Figure 36. Cord Being Inserted into Cord Clamp 1 Screw that secures the cord clamp 3 Cord to be inserted into clamp 2 Screwdriver tightening screw Note    In the above figure, the AC cord clamp shown on the left was available until June 2011, and the AC cord clamp shown on the right is available from June 2011 onwards. The location of the screw that secures the cord in the cord clamp is different.

Step 2

Use the screwdriver to tighten the screws that clamp the cords in place, see the above figure.

After you install the DC terminal block covers or AC cords, install the alarm module (see c_​Installing_​a_​Modular_​Configuration_​Alarm_​Module_​1257400.xml).

This section describes how to remove the DC power shelf wiring from the rear of the modular configuration DC power shelf.

For additional power shelf details, see Cisco CRS Series Carrier Routing System Description or Appendix 1, “Cisco CRS-1 Carrier Routing System Fabric Card Chassis Specifications.”

Before performing this task power down and remove DC PMs and the alarm module in the shelf you want to disconnect. Remove the upper grille on the rear (OIM) side of the chassis, if installed.

Note	Before removing wiring from the power shelf, make sure that the input power cables are not energized.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 6 in. long number 1 Phillips screwdriver
• 3/8-in. ratchet wrench with 10-mm socket

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Use the screwdriver to remove the screw that secures the terminal block cover into the mounting standoff.

3.    Remove the terminal block cover.

4.    Using the 10-mm socket wrench, remove the positive and negative cable pairs from each terminal block.

5.    Replace the terminal block cover.

Step 1	Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.
Step 2	Use the screwdriver to remove the screw that secures the terminal block cover into the mounting standoff. Figure 37. Removing the Terminal Block Cover 1 Screw to tighten (pre-installed on terminal block) 5 Terminal block cover 2 DC terminal block 6 Opening to align over mounting pins 3 Cover latch tab 7 Opening to align over mounting pins 4 Screwdriver securing the cover
Step 3	Remove the terminal block cover.
Step 4	Using the 10-mm socket wrench, remove the positive and negative cable pairs from each terminal block. Note    When a cable is removed from the rear of the DC modular configuration power shelf, we recommend that it should be wrapped with standard black electrical tape.
Step 5	Replace the terminal block cover.

This section describes how to remove input AC cords from the rear of the modular configuration AC power shelf.

Before performing this task power down and remove AC PMs and the alarm module in the shelf you want to disconnect. Remove the upper grille on the rear (OIM) side of the chassis, if installed.

Note	Before removing wiring from the power shelf, make sure that the input power cables are not energized.

You need the following tools to perform this task:

• 6 in. long number 1 Phillips screwdriver

1.    Use the screwdriver to loosen the screws that clamp the cords in place, see this figure .

2.    Remove the cords from the cord clamps.

Step 1

Use the screwdriver to loosen the screws that clamp the cords in place, see this figure . Figure 38. Cord Being Removed from Cord Clamp 1 Screw that secures the cord clamp 3 Cord to be inserted into clamp 2 Screwdriver tightening screw Note    In the above figure, the AC cord clamp shown on the left was available until June 2011, and the AC cord clamp shown on the right is available from June 2011 onwards. The location of the screw that secures the cord in the cord clamp is different.

Step 2

Remove the cords from the cord clamps.

After you remove the DC wiring and DC terminal block covers or AC cords, remove the power shelf. See the c_​Removing_​a_​Modular_​Configuration_​Power_​Shelf_​1199821.xml .

Before performing this task remove the upper grille on the front (SFC) side of the chassis, if installed.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 6-in. long number 1 Phillips screwdriver
• Modular configuration alarm module (Cisco product number CRS-16-ALARM-C=)

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Slide the alarm module into the top left bay on the power shelf, with the display on the right side and the handle on the left side.

3.    Hand tighten the two captive screws on the alarm module.

4.    Use the screwdriver to securely fasten the alarm module to the power shelf.

After the alarm module is installed in the power shelf, you can install the PMs. Continue to the c_​Installing_​a_​Modular_​Configuration_​Power_​Module_​1211302.xml for instructions.

Before performing this task remove the upper grille on the front (SFC) side of the chassis, if installed.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 6-in. long number 1 Phillips screwdriver

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Remove the upper grille on the front (SFC) side of the chassis. For detailed instructions, see Installing and Removing Exterior Cosmetic Components” chapter.

3.    Use the screwdriver to loosen the two captive screws securing the alarm module to the power shelf.

4.    Loosen by hand the panel fasteners on the alarm module.

5.    Carefully slide the alarm module out of the power shelf.

After the modular configuration alarm module is removed from the power shelf, you can remove the power shelf wiring. Continue to the c_​Removing_​AC_​or_​DC_​Power_​Shelf_​Wiring_​1274703.xml for instructions

Before performing this task remove the upper grille on the front (SFC) side of the chassis, if installed.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 6-in. long number 1 Phillips screwdriver
• Torque screwdriver with number 1 Phillips bit and rated accuracy at 5.5 in.-lb (0.62 N-m)
• Modular Configuration PM
  • AC PM (Cisco product number CRS-PM-AC=), or
  • DC PM (Cisco product number CRS-PM-DC=)

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Using two hands to support and guide the PM, slide it into the power shelf.

3.    Flip up the ejector and with nominal install torque of 5.5 in-lb (0.62 N m) of torque, screw the PM into the shelf (see this figure). Do not exceed an install torque value of 10 in-lb (1.13 N-m).

4.    Fill the power shelf to the required configuration

Step 1	Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.
Step 2	Using two hands to support and guide the PM, slide it into the power shelf.
Step 3	Flip up the ejector and with nominal install torque of 5.5 in-lb (0.62 N m) of torque, screw the PM into the shelf (see this figure). Do not exceed an install torque value of 10 in-lb (1.13 N-m). Figure 41. Securing the Power Module to the Shelf 1 Screw securing PM to power shelf
Step 4	Fill the power shelf to the required configuration

After the modular configuration PMs are installed in the chassis, install power module slot covers in empty PM slots, if any. For more information, see the c_​Installing_​a_​Modular_​Configuration_​Power_​Module_​Slot_​Cover_​1373536.xml.

Before performing this task remove the upper grille on the front (SFC) side of the chassis, if installed.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• 6-in. long number 1 Phillips screwdriver

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Remove the upper grille on the front (SFC) side of the chassis. For detailed instructions, go to Installing and Removing Exterior Cosmetic Components chapter.

3.    Using the screwdriver, unscrew the ejector from the PM.

4.    Flip down the ejector, slide the power module out of the power shelf, and place it carefully down on a flat surface.

After the alarm module and PMs have been removed from the chassis, you can remove the power shelf. Continue to the c_​Removing_​a_​Modular_​Configuration_​Power_​Shelf_​1199821.xml for instructions.

Before performing this task, you must first remove the upper grille on the front (SFC) side of the chassis, if installed, and install the alarm module and power modules to the required configuration in each power shelf.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• AC or DC PM Slot Cover
  • AC PM slot cover (Cisco product number 700–29097–xx), or
  • DC PM slot cover (Cisco product number 700–29098–xx)

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Align the PM slot cover with the empty PM slot in the power shelf.

3.    Insert the two tabs on the right side of the PM slot cover into the two holes on the right side of the PM slot. See this figure.

4.    Push the left side of the PM slot cover gently until it clicks into place. See this figure.

Step 1	Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.
Step 2	Align the PM slot cover with the empty PM slot in the power shelf.
Step 3	Insert the two tabs on the right side of the PM slot cover into the two holes on the right side of the PM slot. See this figure.
Step 4	Push the left side of the PM slot cover gently until it clicks into place. See this figure. Figure 42. Installing PM Slot Cover

After the PM slot covers are installed in the chassis, install the upper grille on the front (SFC) side of the chassis.

Before performing this task, you must first remove the upper grille on the front (SFC) side of the chassis, if installed.

You need the following tools to perform this task:

• ESD-preventive wrist strap

1.    Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (SFC) side of the chassis or a bare metal surface on the chassis.

2.    Gently pinch the tab on the left side of the PM slot cover to detach the PM slot cover from the PM slot. See Figure 1.

3.    Remove the two tabs on the right side of the PM slot cover from the two holes on the right side of the PM slot. See Figure 1.

4.    Set the PM slot cover aside.

After performing this task, install an AC or DC PM, if necessary (see the c_​Installing_​a_​Modular_​Configuration_​Power_​Module_​1211302.xml) and re-install the upper grille on the front (SFC) side of the chassis. If you plan to remove the power shelf completely, you must first remove all of the PM slot covers, PMs, and the alarm module from the power shelf. See the c_​Removing_​a_​Modular_​Configuration_​Power_​Module_​1211341.xml and the c_​Removing_​a_​Modular_​Configuration_​Alarm_​Module_​1257452.xml for more information.

This section describes how to power up a chassis with a modular configuration AC or DC power shelf installed.

Before performing this task, you must install and wire the power shelves, and install the PMs, alarm modules, SCGE cards, and exterior cosmetic components. See the c_​Installing_​a_​Modular_​Configuration_​Power_​Shelf_​1249350.xml, the c_​Installing_​AC_​or_​DC_​Power_​Self_​Wiring_​1132672.xml, the Installing an SCGE Card section, and Installing and Removing Exterior Cosmetic Components chapter for more information. If you have a modular configuration DC power system installed, wiring at the BDFB or at the power plant should be complete.

You need the following tools to perform this task:

• ESD-preventive wrist strap
• Multimeter

1.    Make sure that the facility power breakers for the upper (Power A) and lower (Power B) power shelves are in the OFF position.

2.    Make sure that I/O switches on the rear of the upper (Power A) and lower (Power B) power shelves are in the OFF position.

3.    Make sure all SFCs are pulled-out and disconnected from the backplane.

4.    If you have a modular configuration DC power system installed:

5.    Turn the facility breakers for the upper power shelf (Power A) to the ON position. Verify that the Input_OK LED on all of the PMs installed in the upper shelf are green.

6.    Turn the I/O switch at the rear of the upper power shelf (Power A) to the ON position. Verify that the Output_OK LED on all of the PMs installed in the upper shelf are green.

7.    Repeat step 5 and step 6 for the lower power shelf (Power B).

8.    Turn the I/O switch at the rear of both upper power shelves (Power A and Power B) to the OFF position. Verify that none of the Output_OK LEDs on the PMs installed in the shelf are green.

9.    Install all SFCs in the chassis. For more information, see the Installing and Removing Fabric Cards and Card Components chapter.

10.    Turn the I/O switch at the rear of both power shelves (Power A and Power B) to the ON position.

11.    If you have a modular configuration DC power system installed, measure the input voltage of each DC input and compare this value to the voltage measurement noted in step 4. Verify that the equipment is still receiving the correct input voltage measured in step 4.

1.    Turn the I/O switches at the rear of both power shelves, Power A and Power B, to the OFF position.

2.    Turn off all facility power breakers (AC or DC) for the upper power shelf (Power A). Repeat for all facility power breakers for the lower power shelf (Power B).

This table shows the LED status indicator lights for the AC and DC PMs in a modular configuration power system.