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This chapter describes the procedures for installing SSR chassis components, including:
- Grounding the chassis
- Connecting source power to the breaker interface panel
- Installing the cooling modules
Tools Needed
Use the following tools for installing SSR chassis components:
- 7/16 in. socket ratchet or nut driver
- #2 Phillips screwdriver
- 1/2-inch flathead screwdriver
- Torque wrench
Grounding Requirements
This section describes the grounding requirements for the SSR chassis.
WARNING (W:3-1) If a console terminal is required as part of your installation, check that the outlet used to power the terminal has its DC ground connected to the same DC distribution panel ground as the equipment chassis or frame.
Installing Safety Ground to the SSR Chassis
Each SSR chassis must be safety grounded with a minimum of #2 AWG ground wire. The safety ground wire must be terminated with a UL listed two-hole compression lug with hole size and spacing as shown in Table 3-1 and Figure 3-1.
Table 3-1. Suggested UL Compression Lug Supplier Part No. Panduit
LCC2-14A
Figure 3-1. Frame Ground Compression Lug
The safety ground wire is attached directly to the chassis at the rear bottom left corner of the frame to the right side of the bay controller backplane (see Figure 3-2).
NOTE The safety ground MUST be attached to the chassis prior to installing the power and return feeds.
PROCEDURE: Use the following steps to attach the safety ground connection to the SSR chassis:
Step 1 Position the ground lug on the bottom ground holes as shown in Figure 3-2.
Step 2 Secure the ground lug to the chassis with the two (2) star washers and two (2) M5 screws. Torque to 45 in-lb.
Step 3 Install the second ground lug following Step 1 and Step 2.
Figure 3-2. Safety Ground Connection
Power Requirements
The SSR chassis uses dual -48V power inputs for redundant distribution throughout the chassis. Redundancy prevents the failure of one power input from affecting another, and minimizes power outages.
Main power from the customer's -48 Vdc power distribution system (with battery backup) supplies power to the SSR at the field wired terminal block located at the bottom left rear of the chassis.
At the shelf level, there are a redundant pair of power supply inputs (one for each power feed bank), which interface -48V power to the backplane. In addition, there are a redundant pair of power supply inputs for the fans.
Primary power is distributed to SSR chassis in one of two methods:
- Through direct feeds from the building DC power source (if collocated with SSR chassis lineup)
- Through an intermediate power distribution center (if power source is not collocated with SSR chassis lineup)
In either method above, all feeds (A1, A2, B1, B2, AF, and BF) to an SSR chassis lineup must be sourced from a single (dedicated) power source, preferably one source for both A and B feeds.
- All power input cabling should comply with local electrical codes for the location of the SSR being installed. The pertinent electrical codes should govern the sizing of upstream circuit protection, minimum cable ampacity, and voltage drop requirements.
- Voltage drop for each input cable should be less than 1Vdc.
- All input and return wires must be terminated with a UL listed two hole compression lug with hole size and spacing as shown in Table 3-1 and Figure 3-3.
Table 3-2. Suggested UL Compression Lug Supplier Part No. Panduit
LCC4-14A
Figure 3-3. Power and Return Compression Lug
Power and return feeds enter the power box from the bottom. The cables can be routed from overhead or from beneath raised flooring. If routed from beneath raised flooring, there are cable channels on both sides of the chassis.
Power Input
Shelf Power
The following are the shelf power input, cable sizing and upstream breaker requirements for the SSR chassis:
- Each of the shelf power inputs require 70 amps minimum.
- Each of the shelf redundant breaker panels require two (2) 70 amp power inputs for a total of four 70 amp inputs.
- Each input requires its own return, for a total of four returns.
Cooling Module/Bay Controller Power
The following are the cooling module/bay controller power input, cable sizing and upstream breaker requirements for the SSR chassis:
- Each of the cooling module/bay controller power inputs require 20 amps minimum.
- Each of the cooling module/bay controller redundant breaker panels require one (1) 20 amp power inputs for a total of two (2) 20 amp inputs.
- Each input requires its own return, for a total of two (2) returns.
Installing Power and Return Feeds to the SSR Chassis
PROCEDURE: Use the following steps to attach the power and return feeds to the lower back of the SSR near the bay controller backplane:
WARNING (W:3-2) Ensure that the site power feed is turned off prior to installing the SSR power and return feeds (LOCK OUT-TAG OUT).
DO NOT wear antistatic wrist straps while installing power and return feeds to the SSR chassis.Step 1 Flip all six (6) breaker switches located on the top-front of the chassis to the OFF position. Figure 3-4 shows the off position for the fans and shelves 1 and 2.
Figure 3-4. Breaker Interface Panel Breaker Switches (front view)
Step 2 Verify, before touching feeds, that you are not using either ESD wrist or foot straps.
Step 3 Attach the six (6) power feeds (A1, A2, B1, B2, AF and BF) and the six (6) power return feeds to the appropriate locations using crimp-style two-hole lugs. Table 3-3 "Power Feed Locations" identifies power sources and feeds for shelves, fans, and bay controllers. Refer to Figure 3-5 and Figure 3-7 for the location of the power and return feeds.
Figure 3-5. Location of Power Feeds
Step 4 Figure 3-6 shows the schematic of the power and ground connections for the SSR.
Figure 3-6. Power and Return Schematic
Step 5 Secure the power and return feeds with the Keps nuts as shown in Figure 3-7 and torque to 85 in-lb.
Figure 3-7. Power and Return Feeds
CAUTION (C:3-1) Ensure that the shipping foam inserts have been removed from the SSR chassis (see "Removing the Cooling Modules").
Failure to do so may result in equipment damage.Step 6 Install the power box guard plate.
CAUTION (C:3-2) The guard plate is a safety feature and must be installed.
Step 7 Power on the SSR chassis by first flipping the six (6) breaker switches to the ON position on the BIP.
Installing System Modules
The cooling assembly, filler modules, front grill and EMI covers may have been removed when the chassis was mounted in the rack. These components, plus any bay controllers, route controllers, or router modules can be installed at this point.
In order to install the cooling assembly it is necessary to remove the front air intake grill. Once removed, install the cooling modules and bay controller modules.
Preparing to Install Modules
This section describes the procedure to prevent damage to the SSR chassis from static electricity.
Use these precautions to prevent damage from static electricity:
- Do not handle modules unless you are using the appropriate antistatic protection, such as an antistatic wrist or heel strap and a conductive mat.
- When using an antistatic wrist strap, attach the cord to the appropriate ground truck.
- Handle modules by the faceplate and outer enclosure only. Do not touch electrical connections, pins, or soldered surfaces.
CAUTION (C:3-3) Risk of electrostatic damage. When handling circuit cards, wear a grounded antistatic wrist strap or equivalent protection to avoid damaging electrostatic parts.
Installing the Antistatic Wrist Strap
A grounded antistatic wrist strap must be used to protect the SSR chassis and components from damage caused by static.
PROCEDURE: Use the following steps to install the antistatic wrist strap:
Step 1 Remove the alligator clip from the grounding pin on the antistatic wrist strap.
Step 2 Insert the grounding pin into the electrostatic discharge (ESD) jack on the front of the SSR chassis shelf (see Figure 3-8).
Step 3 Use the ESD jack while handling bay controller, cooling, router, and route controller modules. The ESD jack location is at the top of each shelf.
Figure 3-8. ESD Jack Location
CAUTION (C:3-4) Risk of electrostatic damage. When handling circuit cards, wear a grounded antistatic wrist strap or equivalent protection to avoid damaging electrostatic parts.
Installing Bay Controller Modules
The bay controller modules are shipped separately and need to be installed. To avoid damage to the backplane, a detailed inspection of the bay controller module VHDM connector is required each time a module is removed or inserted.
PROCEDURE: Use the following steps to install the bay controller modules:
Step 1 Verify that the antistatic wrist strap you are wearing is properly grounded.
Step 2 Remove the bay controller module from its packaging and static protection bag.
Step 3 Before inserting the bay controller module, remove the VHDM protective cap from the end of the module before use. Set the protective cap aside in a safe place (see Figure 3-9).
Figure 3-9. Removal of VHDM Protective Cap
- A detailed inspection of the VHDM connector on the back of the bay controller module is required prior to insertion. Lay the module gently on a flat surface so you can perform a VHDM connector inspection.
Figure 3-10. Place Bay Controller Module on Flat Surface
Step 4 Carefully inspect the VHDM connector for damage such as deformed sockets, holes between socket columns, and deformed guide fins on top and bottom of the socket columns.
Figure 3-11. Bay Controller Module VHDM Connector
.
NOTE
Step 5 Look into the bay controller slot to ensure bay controller path is free of obstruction; for example, packing materials.
NOTE If the Very HIgh Density Metric (VHDM) connector has any signs of damage, DO NOT insert it into a bay. Mark the module as damaged and call TSR-BY-AVICI to request an Return Material Authorization (RMA).
Step 6 Open the release latches on the bay controller module.
Step 7 Align the bay controller module with the aluminum rails above the baseplate.
Step 8 Slide the bay controller module into the left or right card guides from the front of the bay (see Figure 3-12).
Step 9 Engage the latches to seat the connector at the rear of the module firmly into the controller backplane.
Figure 3-12. SSR Bay Controller Installation
Installing the Cooling Modules
After removing the cooling modules from their anti-static packaging, they may now be reinstalled.
PROCEDURE: Use the following steps to install the cooling modules:
Step 1 Lift the module and align it on the aluminum rails.
Step 2 Grasp the faceplate handles with thumb and forefinger and slowly slide the cooling module toward the rear of the chassis until the latches meet the enclosure.
Step 3 With your thumb and forefinger pull the handle latches together to pull the lip of the latch behind the enclosure (see Figure 3-13).
Figure 3-13. Cooling Module Handle Latches
Step 4 Release the handle latches to lock the cooling module into place.
Figure 3-14. Cooling Module Installation
Installing the Front Air Intake Grill
If the front air intake grill was removed during the chassis mounting process it should be reinstalled.
PROCEDURE: Use the following procedure to install the front air intake grill:
Step 1 Align the two ball studs in the assembly with the receptacles on the chassis.
Figure 3-15. Front Air Intake Assembly Installation
Step 2 Carefully press on the air intake assembly until it snaps in place.
Installing Filler Modules
If filler modules were removed during the chassis mounting process, they need to be reinstalled. Once the SSR is operational, a filler module should be installed in the slot within five minutes after a router or route controller has been removed.
PROCEDURE: Use the following steps to install filler modules:
Step 1 Align the module with the card guides. Position the metal tabs of the lock latch release levers under the lip of the filler module.
Step 2 Slide the module all the way into the slot until it is seated firmly in the backplane.
Step 3 Tighten the two lock latches. The filler module lock latch locks into position (see Figure 3-16).
Figure 3-16. Filler Module Installation
SSR Module Population
Each SSR chassis has two shelves numbered 1 (top) and 2 (bottom). Each shelf has 11 slots to house the router and route controller modules. Each shelf can house one route controller module and 10 router modules. The route controller modules can only be placed in the left most slot on each shelf, slots (S1 and S2). The router modules occupy slots 1-10 and 11-20. All router modules must be inserted in family pairs.
SSR Chassis Shelf and Slot Numbering
The two shelves and their slots are illustrated in Figure 3-17.
Figure 3-17. SSR Chassis Shelf and Slot Numbering
Router Module Population
The location of the router modules within a chassis creates the SSR system's "toroidal" mesh. To maximize the performance of the toroidal mesh. The SSR accepts router modules from two module families. Because each user's configuration differs in its combination of Family 1 and Family 2 modules, the CLI command - show population - is used to populate the chassis. Use of the show population command allows a user to populate a chassis and maximize the capacity of the toroidal mesh
The show population command determines the optimum router module population order. The show population command displays configurations supporting an optimized overall population. To ensure optimum performance, use the show population command when inserting router modules.
Table 3-4 shows module family designations.
Table 3-4. Router Module Families Module Name Family 1 Family 2 1-Port OC-192c
X
4-Port OC-48c
X
4-Port OC-12c
X
16-Port OC-3c
X
1-Port 10-GigE
X
8-Port GigE
X
All Multi Service Connect (MSC) s
X
Roman numerals on the faceplate labels of Family 2 router modules identify the modules as belonging to Family 2. Figure 3-18 shows a 4-Port OC-48c faceplate label identifying the module as a Family 2 module.
Figure 3-18. Family 2 Label Identification
Router Module Population Rules
Because each configuration of the SSR could potentially contain a different ratio of Family 1 and Family 2 modules, a CLI command - show population - is used. Use of the show population command dynamically addresses each users' configuration. Because there may be instances where an installer does not have immediate access to the CLI command line upon installation, this document addresses the initial installation of four router modules.
NOTE The CLI command show population always takes precedence.
Router modules in a SSR use the chassis and slot number as their identifier. For example, in a single-chassis system, module 1/5 identifies the module that resides in chassis 1, slot 5.
CAUTION (C:3-5) Risk of electrostatic damage. When handling modules, wear a grounded antistatic wrist strap or equivalent protection to avoid damaging electrostatic parts.
NOTE It is important to install route controller modules in predefined position.
The rules for populating the SSR bay with route controllers and router module pairs are as follows:
- All antistatic precautions are to be followed while handling and installing modules.
- The route controller modules are restricted to slots S1 and S2. When only one route controller is installed, it must be in slot S2. S1 must be filled with either a secondary route controller or a filler module.
NOTE The primary route controller is configured with the lowest server ID.
- All route controllers are red dot route controllers. The red dot is on the top of the module.
CAUTION (C:3-6) Do not insert router modules into a dedicated server module slot as this may damage the VHDM connector. If you accidentally insert a router module into a dedicated server slot, you must inspect the VHDM connector for damage prior to inserting the module into a module slot.
Failure to follow these precautions could result in equipment damage..
- The SSR accepts only red labeled modules. Module color is located on the top of the module and on each slot.
- Initial installation of router modules into a chassis requires the installation of 4 modules per chassis.
- A module is identified by chassis number/slot number; i.e., 1/10 would be chassis 1, slot 10.
- Empty server and router slots must be filled with either a router module or a filler module within 5 minutes of router removal.
- Router modules must be added in Family pairs. That is, you must install two Family 1 modules OR two Family 2 modules (see Figure 3-19).
Figure 3-19. Sample Initial Installation of Modules
(4 Family 2 modules)
- Depending on your particular configuration, install the first four router modules following the order outlined in Table 3-5 "Initial Router Module Population:"
Table 3-5. Initial Router Module Population Module Family Combinations Family 1 Family 2 Initial Population 1
4
Family 1: 5&6, 15&16,
2
4
Family 2:3&8, 13&18
3
2
2
Family 1: 15&16
Family 2: 13&18
- After installation of the first four router modules, use the show population CLI command - specifying the module family - to identify the next slot to populate.
Refer to IPriori CLI Reference and Configuration Guides (Vol. 1) for further information on this command. An the online version of the manual is available at http://www.avici.com/documentation.
Installing Router Modules
Router modules ship separately. Please refer to the specific installation information included with the router module.
Installing Route Controller Modules
Route Controller modules ship separately. Please refer to the installation information included with the route controller module.
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Copyright © 2005
Avici Systems Inc.
Avici® and TSR®
is a registered trademark of Avici Systems Inc.
IPriori™, Composite Links™, SSR™, QSR, and NSR® are
trademarks of Avici Systems Inc.
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Last Updated: 04/04/05 at 16:10:19