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Cisco CRS-16 AC, Installing And Removing

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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.

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.

Caution

This figure shows the cable wiring for the fixed configuration power shelf.

Figure 6: DC Power Shelf Cable Wiring for Fixed Configuration Power Shelf

The table lists the fixed configuration DC input current and voltage specifications.

Table 1: DC Input Current and Voltage Information

–48 VDC North America–60 VDC European Community(range: –42 VDC to –75
VDC)

Nominal input voltage

50 A maximum at –48 VDC40 A maximum at –60 VDC

Input line current

168 A peak at –75 VDC(maximum for 1 ms)

Inrush current

Each wiring block on the fixed configuration power shelf contains two sets of terminals, one positive and one
negative, and is covered by a plastic block cover that snaps onto the power shelf and is secured by a screw to
a torque value of 4 to 5 in.-lb (0.46 to 0.58 N-m). You must remove the block cover or rotate it out of the way
before you work with the cables. The block covers are slotted in such a way that the cables can exit only one
end. For the cables to point in a different direction, remove the block cover, rotate it, and snap it back on.

Modular Configuration DC Power

The LCC modular configuration DC power system can provide up to 16,800 watts to power the chassis.
However, by default, the power capability of a system when shipped, with six DC PMs per power shelf, is
12,600 watts.

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

Note

Installing and Removing Power Components

9

Installing and Removing Power Components

Modular Configuration DC Power

Summary of Contents for CRS-16 AC

Page 1: ...m Power components are not interchangeable between the fixed and modular configuration power system Fixed configuration power system Consists of two power shelves DC power entry modules PEMs or AC rectifiers and alarm modules It is available in versions for DC and AC power supplies The AC version requires either 3 phase AC Delta or 3 phase AC Wye input power to the power shelves It provides power ...

Page 2: ...tions and recommendations when planning power connections to the router Check the power at your site before installation and periodically after installation to ensure that you are receiving clean power Install a power conditioner if necessary Install proper grounding to avoid damage from lightning and power surges The LCC requires that at least one power shelf and its components be installed to op...

Page 3: ...threaded ground inserts are located on top of the chassis rear MSC side panel to the left of the lower power shelf The following figure shows the NEBS and grounding points on the rear MSC side of the chassis with a modular configuration DC power shelf installed This grounding point is also referred to as the network equipment building system NEBS bonding and grounding stud The location of the grou...

Page 4: ...on of the grounding points Two grounding points are provided use the top grounding point for NEBS grounding purposes Modular configuration power shelf grounding is accomplished by installing an external ground bracket between the power shelves and attached to the chassis as shown in the next figure The bolts that connect the external grounding brackets to the chassis and the power shelf have a tor...

Page 5: ...s attaching ground lug to chassis 2 Four M6 hex bolts attaching shelf grounding bracket to power shelves 7 Shelf grounding bracket 3 Two M6 hex bolts attaching grounding L bracket to chassis 4 Installing the Chassis Ground Cable This section describes how to install the ground cable on the LCC Installing and Removing Power Components 5 Installing and Removing Power Components Installing the Chassi...

Page 6: ...them and a 6 AWG or larger multi strand copper wire The grounding lug used can be either a 180 degree straight lug or a 45 degree lug Figure 3 180 Degree Straight Chassis Ground Lug Figure 4 45 Degree Chassis Ground Lug Two M6 hex head bolts and integrated locking washers are pre installed on the chassis Installing and Removing Power Components 6 Installing and Removing Power Components Prerequisi...

Page 7: ... MSC side panel as shown Figure 1 NEBS Bonding and Grounding Points Modular Configuration DC Power Shown Then use the torque wrench to tighten to a torque of 30 in lb 3 39 N m DETAILED STEPS Step 1 Use the crimping tool mandated by the lug manufacturer to crimp the lug to the ground cable Step 2 Using the 10 mm wrench attach the ground cable to the grounding point on top of the chassis rear MSC si...

Page 8: ...es 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 the 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 en...

Page 9: ... 60 VDC Input line current 168 A peak at 75 VDC maximum for 1 ms Inrush current Each wiring block on the fixed configuration power shelf contains two sets of terminals one positive and one negative and is covered by a plastic block cover that snaps onto the power shelf and is secured by a screw to a torque value of 4 to 5 in lb 0 46 to 0 58 N m You must remove the block cover or rotate it out of t...

Page 10: ...he modular configuration DC input current and voltage specifications Table 2 DC Input Current and Voltage Information 48 VDC North America 60 VDC European Community range 40 VDC to 72 VDC Nominal input voltage 50 A maximum at 48 VDC40 A maximum at 60 VDC60 A maximum at 40 VDC Input line current Each wiring block on the modular configuration DC power shelf contains two sets of terminals one positiv...

Page 11: ...ounding brackets to the chassis and the power shelf have a torque value of 30 in lb 3 39 N m Input Power Present LEDs In both power configurations the DC input power present LEDs provide a visual indication to service personnel that there is voltage present across the input terminal connection The LED provides a warning to the service person that there is power present Power should be disconnected...

Page 12: ...Configuration DC Power Shown This figure shows the input power present LEDs on the rear of the modular configuration DC power shelf Installing and Removing Power Components 12 Installing and Removing Power Components Input Power Present LEDs ...

Page 13: ...ems Each AC powered chassis contains two AC power shelves for 2N redundancy The shelves contain the input power connectors In the fixed configuration power system each shelf contains three AC power rectifiers The power shelves and AC power rectifiers are field replaceable Each shelf and AC power rectifier has its own circuit breaker In the modular configuration power system each shelf can contain ...

Page 14: ...ne power connection is required for each power shelf The power cord for the fixed configuration AC power shelf does not arrive preattached and needs to be installed Note Modular Configuration AC Power The LCC modular configuration AC power system can provide up to 18 000 watts to power the chassis However by default the power capability of a system when shipped with 5 AC PMs per power shelf is 15 ...

Page 15: ...rectifier or DC PEM Installing a Fixed Configuration Alarm Module Removing a Fixed Configuration Alarm Module Powering Up and Down a Chassis with Fixed Configuration AC Power Power Up and Power Down a Chassis with Fixed Configuration DC Power Converting from One Fixed Configuration Power System to Another For complete information on regulatory compliance and safety see Cisco CRS Carrier Routing Sy...

Page 16: ...ng this task remove the upper grille on the front PLIM side of the chassis if installed Do not install the power shelf in the chassis with DC PEMs AC rectifiers or alarm module installed in the power shelf Note Required Tools and Equipment You need the following tools and part to perform this task ESD preventive wrist strap 1 4 in x 6 in long slotted screwdriver Fixed configuration AC or DC power ...

Page 17: ...ver handle to unfasten them Step 4 Supporting the unit by the bottom and grasping one side for balance lift the power shelf up and slide it into one of the power shelf slots on the chassis An empty power shelf weighs approximately 36 lb 16 3 kg Because of the rack mounted height of the chassis you should be especially careful while lifting and removing the power shelf To prevent injury keep your b...

Page 18: ...de 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 cords from the associated power shelves and remove See Removing Fixed Configuration AC Power Cords for more information 4 Remove all power modules three AC power rec...

Page 19: ... from the slot in the chassis After partially removing the power shelf from the chassis using the handles grab both side of the power shelf and slide the shelf completely from the chassis An empty power shelf weighs approximately 36 lb 16 3 kg Because of the rack mounted height of the chassis you should be especially careful while lifting and removing the power shelf To prevent injury to your back...

Page 20: ...d 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 with the rear cover...

Page 21: ...movable 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 with the rear cover removed is shown in this figure Figure 13 AC Delta Power Shelf Rear Lead 3 L3 3 Lead 1 L1 1 Ground...

Page 22: ...ector to a torque value of 20 in lb 2 26 N m 9 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 10 For AC Delta and AC Wye connect the three active cable conductors by...

Page 23: ...the AC rectifiers can be installed For more information see Installing an AC Rectifier or DC PEM Removing Fixed Configuration AC Power Cords This section describes how to remove the AC Wye and AC Delta power cords from the fixed configuration power shelf Prerequisites Before performing this task power down and remove AC rectifiers and the alarm module in the shelf you want to disconnect Remove the...

Page 24: ... is typically the ground cable conductor and remove the ground cable conductor DETAILED STEPS 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 PLIM side of the chassis or a bare metal surface on the chassis Step 2 For AC Delta and AC Wye disconnect the three active cable conductors by loosening the screw on the left ...

Page 25: ...helf make sure that the input power cables are not energized Note If cables are wrapped with black electrical tape be sure to remove tape from cables before installing wiring on the power shelf Note Required Tools and Equipment 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 wr...

Page 26: ... the following resistance values The resistance between the positive and negative power terminal studs of each input must be greater than 90 KOhm The resistance between each positive terminal stud and bare metal surface on the power shelf must be greater than 10 MOhm The resistance between each negative terminal stud and bare metal surface on the power shelf must be greater than 10 MOhm Step 4 Use...

Page 27: ...ed configuration DC power shelf perform the following steps SUMMARY STEPS 1 Attach the ESD preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front PLIM 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 Usi...

Page 28: ...an AC rectifier or DC PEM in the LCC For information on the differences between the power types see DC Power Systems and AC Power Systems The power module is installed into the power shelf on the front PLIM side of the chassis Although differences exist among the DC PEMs and AC rectifiers AC Wye AC Delta and DC they are installed in the same manner The figure shows an AC rectifier for reference Th...

Page 29: ...the backplane of the power shelf 6 Seat the 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 module faceplate You hear a click when the ejector lever locks into place 7 Push the power tab at the bottom front of the AC rectifier or DC PEM to the ON position DETAILED STEPS ...

Page 30: ...C rectifier for reference Prerequisites Before performing this task remove the upper grille on the front PLIM side of the chassis Required Tools and Equipment You need the following tool to perform this task ESD preventive wrist strap Steps To remove an AC rectifier or DC PEM perform the following steps SUMMARY STEPS 1 Attach the ESD preventive wrist strap to your wrist and connect its leash to on...

Page 31: ...ld use two hands when handling the module It is safer to use two people and a ladder to install or remove the module rather than a single person Caution Step 6 Be sure to support the module while you slide the module completely from the bay then set the module carefully aside What to do next After performing this task install a replacement AC rectifier or DC PEM if necessary see Installing an AC R...

Page 32: ...ps SUMMARY STEPS 1 Attach the ESD preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front PLIM 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 supply shelf until the connector on the back of the alarm module makes contact with the conn...

Page 33: ...areful while lifting and removing the alarm module Use two hands when handling the alarm module It is safer to use a ladder to install or remove the alarm module Caution Step 3 Seat the alarm module in the power shelf backplane by pressing it firmly into the chassis backplane connector Step 4 Use the screwdriver to turn the captive screw at the bottom of the alarm module clockwise to seat the alar...

Page 34: ... it carefully aside What to do next After performing this task install a replacement alarm module if necessary and replace the upper grille on the front PLIM side of the chassis Powering Up and Down a Chassis with Fixed Configuration AC Power This section describes how to power up and power down an LCC with fixed configuration AC power shelves installed For details on the fixed configuration chass...

Page 35: ... Configuration Power Shelf Installing an AC Rectifier or DC PEM and Installing a Fixed Configuration Alarm Module Required Tools and Equipment You need the following tools to perform this task ESD preventive wrist strap Multimeter 1 4 in x 6 in long slotted screwdriver Steps To power on the chassis perform the following steps Installing and Removing Power Components 35 Installing and Removing Powe...

Page 36: ...each power rectifier is yellow and that no other LEDs are active 14 Turn the first power rectifier A0 I O switch on the upper power shelf PS0 to the ON position Verify that the PWR OK LED on the power rectifier front panel is green and that no other LEDs are active Repeat for the other two rectifiers A1 and A2 15 Turn the first power rectifier B0 I O switch on the lower power shelf PS1 to the ON p...

Page 37: ...d be greater than 1 MOhms From L3 to L4 Neutral should be greater than 1 MOhms Step 9 Make sure that each input power cable one is connected and energize the facility breaker to each input Step 10 Measure the voltage between the following for the upper PS0 and lower PS1 power shelf Between L1 and L2 AC Delta only Between L2 and L3 AC Delta only Between L3 and L1 AC Delta only Between L1 and L4 AC ...

Page 38: ... both power shelf I O switches PS0 and PS1 to the ON position Turn all power rectifier I O switches to the ON position What to do next For appropriate MSC RP or PLIM LED information see the appropriate section in Installing and Removing Line Cards PLIMs and Associated Components or the specific documentation for the card Note To power down the chassis entirely you must power down both power shelve...

Page 39: ...Note Prerequisites Before performing this task you must install and wire the power shelves install the DC PEMs and alarm modules See Installing a Fixed Configuration Power Shelf Installing an AC Rectifier or DC PEM and Installing a Fixed Configuration Alarm Module Wiring at the BDFB or at the power plant should be complete Make sure all PEM power shelf and power source circuit breakers and switche...

Page 40: ...all boards into the chassis For more information Installing and Removing Line Cards PLIMs and Associated Components chapter 18 Turn the power shelf I O switches PS0 and PS1 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...

Page 41: ...nd both power shelves to the OFF position Verify that no LEDs on the PEMs are active Step 17 Insert all boards into the chassis For more information Installing and Removing Line Cards PLIMs and Associated Components chapter Step 18 Turn the power shelf I O switches PS0 and PS1 to the ON position Step 19 Turn all DC PEM I O switches to the ON position Step 20 Measure the input voltage of each input...

Page 42: ...ling a Fixed Configuration Power Shelf 7 Install the wiring on the rear of the power shelf See Installing Fixed Configuration AC Power Cords section on page 2 20 or Installing Fixed Configuration DC Power Shelf Wiring 8 Install the DC PEMs or AC rectifiers See Installing an AC Rectifier or DC PEM 9 Install the alarm module See Installing a Fixed Configuration Alarm Module 10 Replace the DC fuses o...

Page 43: ...ents in the LCC Before you can install the modular configuration power components you must install the modular configuration power shelf into the chassis After installing the power shelf you can install the power self wiring install the PMs and install the alarm module into the power shelf Although there are differences between the different types of power shelves and PMs AC and DC they are instal...

Page 44: ...ed using the same procedures The front and rear views of the modular configuration DC power shelves are shown in the following figures Figure 18 DC Modular Configuration Power Shelf Front View Figure 19 DC Modular Configuration Power Shelf Rear View Installing and Removing Power Components 44 Installing and Removing Power Components Installing a Modular Configuration Power Shelf ...

Page 45: ...iew Figure 21 AC Modular Configuration Power Shelf Rear View Prerequisites Remove the upper grilles from both the front PLIM and rear MSC sides of the chassis if installed Verify that the power shelf that you are about to install is the correct power shelf Installing and Removing Power Components 45 Installing and Removing Power Components Prerequisites ...

Page 46: ... 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 PLIM side of the chassis 5 Grasping both handles simultaneously push both the left and right handles up in at the same time to push the shelf into the chassis Slide the shelf all the way into the chassis pushing in the shelf until bo...

Page 47: ...er Side Mounting block with two screw holes 1 Holes in chassis to be aligned with the mounting block 2 Step 3 Unscrew the ejector handles from the front face of the shelf one on each side 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 PLIM side of the chassis Installing and Removi...

Page 48: ...the power shelf in position one person can slide it into place Caution Step 5 Grasping both handles simultaneously push both the left and right handles up in at the same time 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 Make sure both handles swing straight up Use care not to bend the handles sideways C...

Page 49: ...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 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 Figure 26 Securing the Power Shelf Ejector Handle Installing and Removing Power Components 49 I...

Page 50: ...odular Configuration Power Module Removing a Modular Configuration Alarm Module Removing AC or DC Power Shelf Wiring and Removing Power Shelf Grounding Brackets Required Tools and Equipment 6 in long number 1 Phillips screwdriver 10 mm 6 pt combination wrench Do not use the handles for lifting or supporting the power shelf because this could severely damage the handles Caution Do not bend the hand...

Page 51: ... it and carefully set it down on a flat surface DETAILED STEPS 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 chassis Figure 27 Remove Bolts that Secure Rear of Power Shelf to Chassis Bolts to be loosened that secure rear of power shelf to chassis 1 Step 2 Insert the screwdriver through the hole in the mounting handles and unsc...

Page 52: ...ure The handles will fall down and slightly away from the shelf Note Figure 29 Mounting Handle Fallen Away from the Shelf Initial position with handle in place against power shelf 1 Handle pulled down for removal of power shelf 2 Step 4 Grasping both handles simultaneously pull both the left and right handles down at the same time to pull the shelf partially out of the chassis Installing and Remov...

Page 53: ...r shelf grounding brackets is the same for both the AC and DC modular configuration power shelves Verify that the chassis is connected to a reliable earth ground the chassis ground cable must be installed in accordance with local electrical safety standards For more information see Bonding and Grounding Guidelines Caution Prerequisites Before performing this task ensure that the chassis grounding ...

Page 54: ...Using the torque wrench tighten the two M6 hex nuts attaching the grounding L bracket to the power shelf to a torque of 20 in lb 2 26 N m DETAILED STEPS 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 PLIM side of the chassis or a bare metal surface on the chassis Step 2 Align the shelf grounding bracket with the po...

Page 55: ... Step 3 7 Shelf grounding bracket Step 3 3 Two M6 hex bolts attaching grounding L bracket to chassis Step 5 4 A 45 degree grounding lug is shown in previous figure A 180 degree straight grounding lug can also be used Note Step 5 Attach the grounding L bracket to the chassis using the two M6 hex bolts provided Using the torque wrench tighten the M6 hex bolts to a torque of 20 in lb 2 26 N m Install...

Page 56: ...g a Modular Configuration Power Module Removing a Modular Configuration Alarm Module and Removing AC or DC Power Shelf Wiring Required Tools and Equipment You need the following tools to perform this task ESD preventive wrist strap 3 8 in ratchet wrench with 10 mm socket Steps To remove the power shelf grounding brackets perform the following steps SUMMARY STEPS 1 Attach the ESD preventive wrist s...

Page 57: ...MSC 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 grounding L bracket to the power shelf Do not fully remove Figure 31 Grounding Brackets Two M6 hex nuts attaching grounding L bracket to shelf grounding bracket Step 4 5 Chassis ground cable 1 Grounding L bracket Step 5 6 Two M6 hex bolts attaching ground lug...

Page 58: ...socket wrench to remove the ground cable from the grounding point on top of the chassis rear MSC side panel Do not remove the chassis ground cable unless the chassis is being replaced Caution What to do next After the power shelf grounding brackets have been removed the power shelf can be removed from the chassis See Removing a Modular Configuration Power Shelf Installing AC or DC Power Shelf Wiri...

Page 59: ... For more information see Installing Power Shelf Grounding Brackets Caution Prerequisites Before performing this task ensure that both power shelves are installed in the chassis Remove the upper grille from the rear MSC side of the chassis if installed Before installing wiring on the power shelf make sure that the input power cables are not energized Note Required Tools and Equipment ESD preventiv...

Page 60: ...he resistance between the positive and negative power terminal studs of each input must be greater than 90 KOhm The resistance between each positive terminal stud and bare metal surface on the power shelf must be greater than 10 MOhm The resistance between each negative terminal stud and bare metal surface on the power shelf must be greater than 10 MOhm Step 4 Use the crimping tool mandated by the...

Page 61: ...ock covers go to the rear MSC side of the chassis and perform the following steps SUMMARY STEPS 1 Attach the ESD preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front PLIM 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 mo...

Page 62: ... 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 Figure 34 Securing the Terminal Block Cover Opening to align over mounting pins 5 DC terminal block 1 Installing and Removing Power Components 62 Installing and Removing Power Components Steps ...

Page 63: ... power shelves are installed in the chassis Remove the upper grille from the rear MSC 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 more information see the Cisco CRS 3 Phase AC Power Distribution Unit Installation Guide Before ...

Page 64: ...p 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 Note Step 2 Use the screwdriver to tighten the screw that clamps the cord in place What to do next After you install the DC input cables and DC terminal block covers or AC input cords install the alarm module see Installing a Modular Configuration Alarm Module Rem...

Page 65: ...PS 1 Attach the ESD preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front PLIM 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 c...

Page 66: ...ighten pre installed on terminal block 2 Cover latch tab 7 Screwdriver securing the cover 3 Terminal block cover 4 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 Installing and Removing Power Components 66 Installing and Removing Power Components Steps ...

Page 67: ...ve the upper grille from the rear MSC side of the chassis if installed Before removing wiring from the power shelf make sure that the input power cables are not energized Note Required Tools and Equipment 6 in long number 1 Phillips screwdriver Steps To remove the input AC cords go to the rear of the chassis and perform the following steps SUMMARY STEPS 1 Use the screwdriver to loosen the screws t...

Page 68: ...Note Step 2 Remove the cords from the cord clamps What to do next After you remove the DC wiring and DC terminal block covers or AC cords remove the power shelf See Removing a Modular Configuration Power Shelf Installing a Modular Configuration Alarm Module This section describes how to install the alarm modules in a modular configuration power shelf in the LCC This figure shows a modular configur...

Page 69: ...ed into the chassis Caution Required Tools and Equipment ESD preventive wrist strap 6 in long number 1 Phillips screwdriver Modular configuration alarm module Cisco product number CRS 16 ALARM C Steps To install the alarm module perform the following steps SUMMARY STEPS 1 Attach the ESD preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front PLI...

Page 70: ...g a Modular Configuration Power Module and Installing a Power Module Slot Cover Removing a Modular Configuration Alarm Module This section describes how to remove the alarm modules shown in the previous figure from the modular configuration power shelf installed in the LCC Required Tools and Equipment You need the following tools to perform this task ESD preventive wrist strap 6 in long number 1 P...

Page 71: ...crews securing the alarm module to the power shelf Step 4 Loosen by hand the panel fasteners on the alarm module Step 5 Carefully slide the alarm module out of the power shelf What to do next After performing this task install a replacement alarm module if necessary and re install the upper grille on the front PLIM side of the chassis Installing a Modular Configuration Power Module This section de...

Page 72: ...f the ESD connection sockets on the front PLIM 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 screw the PM into the shelf Do not exceed an install torque of 10 in lb 1 13 N m 4 Fill the power shelf to the required configuration DETAILED...

Page 73: ...install power module slot covers in empty PM slots if any For more information see Installing a Power Module Slot Cover Removing a Modular Configuration Power Module This section describes how to remove a PM from a modular configuration power shelf Installing and Removing Power Components 73 Installing and Removing Power Components Removing a Modular Configuration Power Module ...

Page 74: ...ttach the ESD preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front PLIM side of the chassis or a bare metal surface on the chassis Step 2 Remove the upper grille on the front PLIM side of the chassis For detailed instructions go to Installing and Removing Exterior Cosmetic Components Step 3 Using the screwdriver unscrew the ejector from the P...

Page 75: ...t PLIM 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 4 Push the left side of the PM slot cover gently until it clicks into place DETAILED STEPS Step 1 Attach the ESD preventive wrist strap to your wrist and...

Page 76: ... Module Slot Cover This section describes how to remove a PM slot cover from a PM slot in a modular configuration AC or DC power shelf Prerequisites Before performing this task you must first remove the upper grille on the front PLIM side of the chassis if installed Installing and Removing Power Components 76 Installing and Removing Power Components Removing a Power Module Slot Cover ...

Page 77: ... slot cover from the two holes on the right side of the PM slot as shown in the previous figure Step 4 Set the PM slot cover aside What to do next After performing this task install an AC or DC PM if necessary Installing a Modular Configuration Power Module and re install the upper grille on the front PLIM side of the chassis If you plan to remove the power shelf completely you must first remove a...

Page 78: ... shelves install the PMs and alarm modules and install the route processor RP card See Installing a Modular Configuration Power Shelf Installing a Modular Configuration Power Module Installing a Modular Configuration Alarm Module and Installing an RP PRP or DRP Card If you have a modular configuration DC power system installed wiring at the BDFB or at the power plant should be complete Steps To po...

Page 79: ...t input voltage measured in Step 4 DETAILED STEPS Step 1 Make sure that the facility power breakers for the upper Power A and lower Power B power shelves are in the OFF position Step 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 Step 3 Make sure all boards RPs PLIMs SFCs and FPs are pulled out and disconnected from the backpl...

Page 80: ...ction describes how to power down a chassis with a modular configuration AC or DC power shelf Steps To power down the chassis perform the following steps SUMMARY STEPS 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 to the OFF position Repeat for the facility power br...

Page 81: ...ert an LCC with a modular configuration power system from AC to DC power or from DC to AC power perform the following steps SUMMARY STEPS 1 Power down the chassis completely and turn the facility power breakers to the OFF position 2 Remove the AC or DC PMs 3 Remove the alarm modules 4 Remove the power shelves 5 Unplug the AC power cords or remove the DC fusing from the power source Remove the AC o...

Page 82: ...one time Note Converting a Chassis from Fixed Configuration Power to Modular Configuration Power Do not attempt to convert from fixed configuration power to modular configuration power while the LCC is powered up and running Ensure that you have powered down the system and all power is disconnected from the system Caution This section lists the steps to be performed to convert the LCC from fixed c...

Page 83: ... STEPS Step 1 Remove the alarm modules Step 2 Remove the AC rectifiers or DC PEMs Step 3 Unplug the AC power cords or remove the DC fusing from the power source Remove the AC or DC wiring from the fixed configuration power shelf Step 4 For fixed configuration DC only remove the ground cable connected to the rear of the power shelf This ground cable will not be used when installing a modular config...

Page 84: ...Installing and Removing Power Components 84 Installing and Removing Power Components Steps ...

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