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DC Power Systems

The Cisco CRS Series Enhanced 16-slot Line Card Chassis 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

Each DC powered chassis contains two DC power shelves for 2N redundancy. The shelves contain the input
power connectors. Each shelf can accept up to eight DC PMs. The power shelves and DC PMs are field
replaceable.

Figure 3: DC Power Shelf Cable Wiring for Power Shelf , on page 6

shows the cable wiring for the power

shelf.

Figure 3: DC Power Shelf Cable Wiring for Power Shelf

Each power shelf operates with up to eight DC inputs of

–

48/

–

60 VDC (nominal), 60A. The power shelf

accepts input DC power in the range

–

40 to

–

72 VDC.

Table 1: DC Input Current and Voltage Information, on page 7

lists the DC input current and voltage

specifications.

Cisco CRS Routers 16-Slot Line Card Chassis Enhanced Router Installation Guide

6

Installing Power Components

DC Power Systems

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Содержание CRS Series

Страница 1: ...helf The power system also includes SNMP MIBS and XML support In the AC power system PDU refers to the Cisco CRS PDU which is required to convert 3 phase AC Wye or AC Delta input power to single phase AC input power for the AC power shelf For further information and installation instructions refer to the Cisco CRS 3 Phase AC Power Distribution Unit Installation Guide Note This section contains the...

Страница 2: ...rth ground connections The chassis allows you to connect the central office ground system or interior equipment grounding system to the bonding and grounding receptacles on the router chassis Threaded ground inserts are located on top of the chassis rear MSC side panel to the right of the lower power shelf There are also two sets of grounding studs located at the bottom of the rear MSC side of the...

Страница 3: ...hassis Two Torx security screws 1 The two bolts below the NEBS bonding and grounding points at the top of the chassis are required for proper bonding and grounding of the chassis and should not be removed Note Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 3 Installing Power Components Bonding and Grounding Guidelines ...

Страница 4: ...e NEBS and grounding points at the bottom on the rear MSC side of the chassis Figure 2 NEBS Bonding and Grounding Points Bottom Rear MSC Side of Chassis Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 4 Installing Power Components Bonding and Grounding Guidelines ...

Страница 5: ...Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 5 Installing Power Components Bonding and Grounding Guidelines ...

Страница 6: ...contain the input power connectors Each shelf can accept up to eight DC PMs The power shelves and DC PMs are field replaceable Figure 3 DC Power Shelf Cable Wiring for Power Shelf on page 6 shows the cable wiring for the power shelf Figure 3 DC Power Shelf Cable Wiring for Power Shelf Each power shelf operates with up to eight DC inputs of 48 60 VDC nominal 60A The power shelf accepts input DC pow...

Страница 7: ... 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 Figure 4 DC Power Cable Lug on page 7 Figure 4 DC Power Cable Lug For additional power details see Appendix A Cisco CRS Series Carrier Routing System 16 Slot EC Line Card C...

Страница 8: ...rsed 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 Caution AC Power Systems The Cisco CRS Series Enhanced 16 slot Line Card Chassis 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 five AC PMs per power ...

Страница 9: ...ommend that you use appropriate short circuit protection in compliance with national and local electrical codes Note For additional power details see Appendix A Cisco CRS Series Carrier Routing System 16 Slot EC Line Card Chassis Specifications or the Cisco CRS Series Carrier Routing System 16 Slot Line Card Chassis System Description How to Install Power Components This section describes how to i...

Страница 10: ...lock vertically Mate the power block pivot and chassis pivot point together See item 2 in Figure 8 Power A Bus Bar Installed in Chassis on page 14 6 Unscrew the two handle screws on the power bus bar and open the handle See item 3 on Figure 8 Power A Bus Bar Installed in Chassis on page 14 7 Hold the power block cable to the side to keep clear of the power block connectors while seating the power ...

Страница 11: ...hassis 1 Step 2 Remove the Power A bus bar shipping bracket form the chassis and set it aside Step 3 Remove the Power A bus bar from the rear of the chassis See Figure 7 Removing the Cover From the Power A Bus Bar on page 12 The Power A bus bar is connected to the chassis with an internal cable Be careful not to drop the power bus bar Note Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Route...

Страница 12: ...ttach the cover to the bus bar See Figure 7 Removing the Cover From the Power A Bus Bar on page 12 Figure 7 Removing the Cover From the Power A Bus Bar Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 12 Installing Power Components Installing the Power A Bus Bar ...

Страница 13: ...nal cable connection 1 Screws attaching cover to Power A bus bar 2 Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 13 Installing Power Components Installing the Power A Bus Bar ...

Страница 14: ...s on page 14 Step 7 Hold the power block cable to the side to keep clear of the power block connectors while seating the power block Step 8 Seat the power block and tighten the two screws on the handle See item 3 in Figure 8 Power A Bus Bar Installed in Chassis on page 14 Figure 8 Power A Bus Bar Installed in Chassis Captive screw securing Power A bus bar to chassis 1 Cisco CRS Routers 16 Slot Lin...

Страница 15: ...for the Cisco CRS Carrier Routing System Although the upper grille support is an exterior cosmetic component it must be installed prior to installing the upper chassis ground cable and the power shelves Prerequisites Before performing this task perform the following procedure Required Tools and Equipment You need the following tools and equipment to perform this task 6 in long number 1 Phillips sc...

Страница 16: ...e Unistruts on page 16 for more information Installing the Unistruts This section describes how to install the unistruts on the Cisco CRS Series Enhanced 16 slot Line Card Chassis For complete information on regulatory compliance and safety see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System Although the unistruts are exterior cosmetic components they should b...

Страница 17: ...t PLIM side of the chassis See Figure 10 Attaching the Unistrut on page 18 DETAILED STEPS Attach each unistrut to the top of the chassis by inserting four M12 hex head bolts and washers two for each strut into the bolt holes on the inside of the strut and tightening with the 8mm hex bit socket and ratchet wrench The closed end of a unistrut faces the front PLIM side of the chassis See Figure 10 At...

Страница 18: ...for ground cable 3 Upper grille support 1 Unistruts 2 What to Do Next After the upper grille support has been installed install the chassis ground cable Continue to the Installing the Chassis Ground Cable on page 19 for more information Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 18 Installing Power Components Installing the Unistruts ...

Страница 19: ...m To ensure a satisfactory ground connection you also need the following parts One 180 degree angle straight grounding lug that has two M6 bolt holes with 0 63 inches 5 8 inch 1 60 cm of spacing center to center between them and a 6 AWG or larger multistrand copper wire See Figure 11 180 Degree Straight Chassis Ground Lug on page 19 Figure 11 180 Degree Straight Chassis Ground Lug Two M6 hex head ...

Страница 20: ...Grounding Points Bottom of Chassis on page 22 if the ground cable is run from under a raised floor 3 Use the torque wrench to tighten to a torque of 30 in lb 3 39 N m 4 Connect the other end of the ground cable to a grounding point at your site according to site requirements DETAILED STEPS Step 1 Use the crimping tool mandated by the lug manufacturer to crimp the lug to the ground cable Step 2 Usi...

Страница 21: ... if the ground cable is run from under a raised floor Figure 12 NEBS Bonding and Grounding Points Top of Chassis Two Torx security screws 1 Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 21 Installing Power Components Installing the Chassis Ground Cable ...

Страница 22: ...uired for proper bonding and grounding of the chassis and should not be removed Note Figure 13 NEBS Bonding and Grounding Points Bottom of Chassis Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 22 Installing Power Components Installing the Chassis Ground Cable ...

Страница 23: ...Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 23 Installing Power Components Installing the Chassis Ground Cable ...

Страница 24: ...ves in the Cisco CRS Series Enhanced 16 slot Line Card Chassis For complete information on regulatory compliance and safety see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System Although there are differences between the AC and DC power shelves they are installed using the same procedures The front and rear views of the DC power shelves are shown in Figure 14 DC...

Страница 25: ...ssis Ground Cable on page 19 Removing the Exhaust Air Deflector page 7 45 if the lower power shelf is being installed Removing the Upper Rear Air Grille page 7 21 if installed Removing the Front Upper Grille page 7 28 if installed Removing the Upper Grille Support page 7 52 if installed Verify that the power shelf that you are about to install is the correct power shelf either AC or DC Do not inst...

Страница 26: ...andles from the front face of the shelf one on each side See Figure 18 Power Shelf Ejector Handles on Front of Power Shelf on page 27 4 Grasping both handles simultaneously push both the left and right handles up and in at the same time to push the shelf into the chassis Slide the shelf all the way into the chassis until both power shelf handles hook around the pins 5 Using the screwdriver tighten...

Страница 27: ...7 Figure 18 Power Shelf Ejector Handles on Front of Power Shelf Power shelf ejector handle pushed up to slide shelf into chassis 1 Power shelf ejector handle pulled away from shelf 2 Screws that attach power shelf to chassis 3 Because of the weight of the power shelf 40 lbs 18 kg and the height that the power shelf is installed in the chassis you should be especially careful while lifting and inst...

Страница 28: ...lf Note Figure 19 Installing the Power Shelf in the Chassis Power shelf being installed 1 Step 4 Grasping both handles simultaneously push both the left and right handles up and in at the same time to push the shelf into the chassis Slide the shelf all the way into the chassis until both power shelf handles hook around the pins Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installati...

Страница 29: ...ews that attach the bottom of the power shelf one on each side to the chassis to a torque value of 15 in lb 1 69 N m to 20 in lb 2 26 N m See Figure 20 Installing and Securing Power Shelf on page 29 The screws that secure the power shelf to the chassis are relied upon for power shelf bonding and grounding Note Step 7 Install the second power shelf following through Step 3 through Step 6 Cisco CRS ...

Страница 30: ...and install the DC terminal block covers on the Cisco CRS Series Enhanced 16 slot Line Card Chassis Figure 21 DC Power Shelf Cable Wiring for Power Shelf on page 30 shows the cable wiring for the DC power shelf Figure 21 DC Power Shelf Cable Wiring for Power Shelf For additional power shelf details see the Cisco CSR 1 Series Carrier Routing System Description or Appendix A Cisco CRS Series Carrier...

Страница 31: ...7 located on the left side Use the torque wrench to tighten to a torque of 20 in lb 2 26 N m Route the power cables for the upper power shelf to the left 5 Using the wrench attach the positive and negative cable pairs to each terminal block on the lower power shelf Power B Start with PM0 located on the right side and move left finishing with PM7 located on the left side Use the torque wrench to ti...

Страница 32: ...o each terminal block on the upper power shelf Power A Start with PM0 located on the right side and move left finishing with PM7 located on the left side Use the torque wrench to tighten to a torque of 20 in lb 2 26 N m Route the power cables for the upper power shelf to the left Step 5 Using the wrench attach the positive and negative cable pairs to each terminal block on the lower power shelf Po...

Страница 33: ...s and Equipment You need the following tools to perform this task 6 in long Number 1 Phillips screwdriver Terminal block covers Torque screwdriver with Number 1 Phillips head and a torque rating of 5 to 7 in lb Steps To install the DC terminal block covers go to the rear MSC side of the chassis and perform the following steps Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation...

Страница 34: ...minal Block Cover on page 34 Tighten to a torque of 5 to 7 in lb Figure 23 Securing the Terminal Block Cover What To Do Next After you install the DC input cables and DC terminal block cover re install the rear exhaust air deflector Continue to the Installing the Exhaust Air Deflector on page 37 for instructions Installing AC Power Cords This section describes how to install input AC cords on the ...

Страница 35: ...ou need the following tools to perform this task 6 in long number 1 Phillips screwdriver Input AC power cords depending on locale Refer to Appendix B Product IDs Steps To install the input AC cord go to the rear MSC side of the chassis and perform the following steps SUMMARY STEPS 1 Insert the cord plug into the cord clamp see Figure 24 Cord Being Inserted into Cord Clamp on page 36 following the ...

Страница 36: ...Cord Clamp Cord plug to be inserted into clamp 3 Screw that secures the cord clamp 1 Screwdriver tightening screw 2 Step 2 Use the screwdriver to secure the screw that clamps the cord plug in place see Figure 24 Cord Being Inserted into Cord Clamp on page 36 What To Do Next After you install the AC input cords re install the rear exhaust air deflector Continue to the Installing the Exhaust Air Def...

Страница 37: ...ols and equipment to perform this task 6 in long number 2 Phillips screwdriver Rear exhaust air deflector set aside earlier Steps To install the exhaust air deflector on the chassis perform the following steps SUMMARY STEPS 1 Locate the mounting position standoffs on each side of the exhaust opening 2 Position the lower cutouts on the bottom of the air deflector with the lower standoffs 3 Rotate t...

Страница 38: ... opening Step 2 Position the lower cutouts on the bottom of the air deflector with the lower standoffs Figure 25 Positioning the Lower Cutouts Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 38 Installing Power Components Installing the Exhaust Air Deflector ...

Страница 39: ...tandoff Figure 26 Rotating the Air Deflector Forward Step 4 Tighten the captive screw on both sides Figure 27 The Captive Screw Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 39 Installing Power Components Installing the Exhaust Air Deflector ...

Страница 40: ...lling an Alarm Module on page 40 and the Installing a Power Module on page 45 for instructions Installing an Alarm Module This section describes how to install the alarm modules in the power shelves in the Cisco CRS Series Enhanced 16 slot Line Card Chassis For complete information on regulatory compliance and safety see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routin...

Страница 41: ... and screwed into the chassis Caution Required Tools and Equipment You need the following tools to perform this task ESD preventive wrist strap 6 in long number 1 Phillips screwdriver Alarm module Cisco product number CRS 16 ALARM B Steps To install the alarm module perform the following steps Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 41 Installing Power Compon...

Страница 42: ...ing Alarm Module in Power Shelf on page 43 4 Continue to push the alarm module gently and rotate alarm module ejector upwards to seat the alarm module Be careful not to pinch fingers between the ejector handle and the alarm module See Figure 31 Rotating Alarm Module Ejector Upwards to Seat Alarm Module on page 44 5 Hand tighten the captive screw on the lower right corner of the alarm module 6 Use ...

Страница 43: ...ower Shelf on page 43 Step 3 Slide the alarm module into the bay on the right side of the power shelf As you slide the module in hold the ejector and gently push until it engages the chassis See Figure 30 Installing Alarm Module in Power Shelf on page 43 Figure 30 Installing Alarm Module in Power Shelf Alarm module 1 Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 43...

Страница 44: ...rm Module Step 5 Hand tighten the captive screw on the lower right corner of the alarm module Step 6 Use the number 1 Phillips screwdriver to securely fasten captive screw that secures the alarm module to the power shelf What to Do Next After the alarm modules are installed in the power shelves install the AC or DC power modules Continue to the Installing a Power Module on page 45 for instructions...

Страница 45: ...tem Although there are differences between the AC and DC power modules they are installed using the same procedures Figure 32 Power Module Prerequisites Before performing this task perform the following procedures Do not attempt to install the PM until the power shelf is in place and screwed into the chassis Caution Required Tools and Equipment You need the following tools to perform this task Cis...

Страница 46: ...face on the chassis 2 Using two hands to support and guide the PM slide it into the power shelf Install PM0 first 3 Rotate the ejector lever upwards to seat the PM into the power shelf Tighten the ejector lever to nominal install torque of 5 5 in lb 0 62 N m screw the PM into the shelf see Figure 33 Securing the PM to the Shelf on page 47 Do not exceed a maximum install torque of 10 in lb 1 13 N m...

Страница 47: ...l power module slot covers into empty power module slots in the power shelf if any For more information see the Installing a Power Module Slot Cover on page 47 Other wise re install the upper grille on the front PLIM side of the chassis if applicable Installing a Power Module Slot Cover This section describes how to install power module slot covers in empty power module slots in the power shelves ...

Страница 48: ... there are two ESD connection sockets right above the cable management tray in the center of the chassis left and right You can also connect the ESD preventive wrist strap leash to any 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 ...

Страница 49: ...of the PM slot See Figure 34 Installing PM Slot Cover on page 49 Step 4 Push the left side of the PM slot cover gently until it clicks into place See Figure 34 Installing PM Slot Cover on page 49 Figure 34 Installing PM Slot Cover What to Do Next After performing this task re install the upper grille on the front PLIM side of the chassis if applicable Cisco CRS Routers 16 Slot Line Card Chassis En...

Страница 50: ... possible to install or remove a power shelf while the chassis is running it is recommended to remove power from the chassis completely if possible for service protection and safety Figure 35 Cisco CRS Enhanced 16 Slot Line Card Chassis Front PLIM Side Slot Numbers on page 50 shows the chassis slot number on the front PLIM side of the Cisco CRS Series Enhanced 16 slot Line Card Chassis with an AC ...

Страница 51: ...tput_OK On An internal fault is detected within the PM Off The PM has no internal fault Red Internal Fault Power Up a Chassis This section describes how to power up a chassis with AC or DC power shelves installed Prerequisites Before performing this task perform the following procedures If you have a DC power system installed wiring at the BDFB or at the power plant should be complete Steps To pow...

Страница 52: ...tem installed perform the following steps a Insert the power fuse at the BDFB or power plant to energize PM 0 on the upper power shelf Power A b 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 Make sure that the polarity of the DC input wiring is correct C...

Страница 53: ... 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 If you have a DC power system installed remove the power fuse at the BDFB or power plant for each power module on both power shelves 3 If you have an AC power system installed turn off the source circuit breakers to de energize the power mo...

Страница 54: ...Cisco CRS Routers 16 Slot Line Card Chassis Enhanced Router Installation Guide 54 Installing Power Components Power Down a Chassis ...

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