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COMSPHERE – 48 Vdc CENTRAL OFFICE POWER UNIT INST ALLA TION GUIDE Document No. 3000-A2-GB41-40 May 1998.
COMSPHERE –48 Vdc Central Office Power Unit A May 1998 3000-A2-GB41-40 COMSPHERE – 48 Vdc Central Office Power Unit Installation Guide 3000-A2-GB41-40 5th Edition (May 1998) Changes and enhancements to the product and to the information herein will be documented and issued as a new release.
Safety Instructions B 3000-A2-GB41-40 May 1998 Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. This product is intended to be used with a three-wire grounding type plug — a plug which has a grounding pin.
COMSPHERE –48 Vdc Central Office Power Unit C May 1998 3000-A2-GB41-40 Notices ! W ARNING: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.
i 3000-A2-GB41-40 May 1998 T able of Contents Preface Objectives and Reader Assumptions v . . . . . . . . . . . . . . . . . . . . . . . . . Abstract v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents v .
COMSPHERE –48 Vdc Central Office Power Unit ii May 1998 3000-A2-GB41-40 3. T roubleshooting and Maintenance Overview 3-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indicators and Controls 3-1 . . . . .
iii 3000-A2-GB41-40 May 1998 List of Figures Figure Page 1-1. Central Office (CO) Power Unit with One Power Module 1-3 . . . . . . . . . . . . . . . . . . . . 1-2. Central Office (CO) Power Unit with T wo Power Modules 1-3 . . . . . . . . . . . . . . .
COMSPHERE –48 Vdc Central Office Power Unit iv May 1998 3000-A2-GB41-40 List of T ables T able Page 1-1 T echnical Specifications for Central Office (CO) Power Unit 1-4 . . . . . . . . . . . . . . . . . 2-1 Maximum Ambient T emperatures Permitted 2-2 .
v 3000-A2-GB41–40 May 1998 Preface Objectives and Reader Assumptions This guide contains installation information for the COMSPHERE – 48 Vdc Central Office (CO) Power Unit which is designed to be used with COMSPHERE 3000 Series Carriers.
COMSPHERE –48 Vdc Central Office Power Unit vi May 1998 3000-A2-GB41-40.
1-1 3000-A2-GB41-40 May 1998 Introduction Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Feature 1-2 . . . . . . . . . . . . . . . . . . . .
COMSPHERE –48 Vdc Central Office Power Unit 1-2 May 1998 3000-A2-GB41-40 NOTE Customer-supplied cable assemblies must comply with items 5 and 6 of the Important Safety Instructions at the front of this guide. For more information on the alarm cables and NMS adapter cable, see Appendix A of this guide.
Introduction 1-3 3000-A2-GB41-40 May 1998 Po w e r Module Fa n CO P ow er Unit Backplane CO P ow er Tr a y Captive Screws Po w e r Module Handle 98-13758-01 Powe r Fan Alarm 3000 DC Power Module Captive Screws Figure 1-1.
COMSPHERE –48 Vdc Central Office Power Unit 1-4 May 1998 3000-A2-GB41-40 T echnical Specifications T echnical specifications for the CO Power Unit (which includes one power module) are listed in T able 1-1 .
Introduction 1-5 3000-A2-GB41-40 May 1998 T able 1-1 (2 of 2) T echnical Specifications for Central Office (CO) Power Unit T echnical Specifications Criteria WEIGHT CO Power Unit (includes one power module) CO Power Unit (includes two power modules) Power Module Air Filter 10.
COMSPHERE –48 Vdc Central Office Power Unit 1-6 May 1998 3000-A2-GB41-40 This page intentionally left blank..
2-1 3000-A2-GB41-40 May 1998 Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation Considerations 2-1 . . . . . . . . . .
COMSPHERE –48 Vdc Central Office Power Unit 2-2 May 1998 3000-A2-GB41-40 directly above the bottom carrier should have its power module installed in the right side of its CO power tray .
Installation 2-3 3000-A2-GB41-40 May 1998 Redundant Mode of Operation In the Redundant mode of operation, both power modules share the load (that is, both modules supply power to all slots in the carrier). If one power module fails, the remaining power module assumes the full load of the carrier .
COMSPHERE –48 Vdc Central Office Power Unit 2-4 May 1998 3000-A2-GB41-40 CO Power Unit Installation The CO Power Unit is installed at the bottom of the carrier . Y ou will need a large, flat-blade screwdriver to install the CO Power Unit and a medium, flat-blade screwdriver to set the option straps.
Installation 2-5 3000-A2-GB41-40 May 1998 98-13751-02 Powe r Fan Alarm 3000 DC Pow er Module Powe r Fan Alarm 3000 DC Pow er Module P ow er Module Provided With CO P ow er Unit Optional Second P ow er Module Figure 2-1.
COMSPHERE –48 Vdc Central Office Power Unit 2-6 May 1998 3000-A2-GB41-40 Setting the Option Straps The option straps are screw switches that are set by raising (loosening) or lowering (tightening) the screw to break or make the contact. There are five option straps, S1 through S5, on the CO Power Unit’ s backplane (see Figure 2-2 ).
Installation 2-7 3000-A2-GB41-40 May 1998 Independent Mode If you want to operate in Independent mode and you plan to use either one or two – 48 Vdc power sources, configure the option straps as shown in T able 2-3 .
COMSPHERE –48 Vdc Central Office Power Unit 2-8 May 1998 3000-A2-GB41-40 Installing the CO Power Unit If installing an SDCP in the carrier in which you plan to install a CO Power Unit, be sure to install the SDCP ribbon cable that provides power to the SDCP before installing the CO Power Unit.
Installation 2-9 3000-A2-GB41-40 May 1998 Built-in Retainer Clips SDCP Ribbon Cabll Space Between CO Power T ray and Power Module SDCP Ribbon Cabll Left Power Module CO Power T ray Flanges Ground Strap 496-13681-02 Power Fan Alarm 3000 DC Power Module Power Fan Alarm 3000 DC Power Module 3000 DC Power Module Figure 2-3.
COMSPHERE –48 Vdc Central Office Power Unit 2-10 May 1998 3000-A2-GB41-40 P20 P19 497-13673-0 1 P3 (OUTPUT) CAPTIVE SCREW P6 (OUTPUT) –48VDC B (INPUT) CAPTIVE SCREW BACKPLANE CONNECTOR CABLE ASSEMBLIES NETWORK MANAGEMENT CONNECTOR ALARM B ALARM A –48VDC A (INPUT) Figure 2-4.
Installation 2-1 1 3000-A2-GB41-40 May 1998 496-13755-01 –48 Vdc P ower Source A –48V GRD Ground Return Optional Fuse –48 Vdc B –48 Vdc A AMP Connectors Figure 2-5.
COMSPHERE –48 Vdc Central Office Power Unit 2-12 May 1998 3000-A2-GB41-40 NOTE The option straps must be set for the Independent mode of operation. For the correct settings, see the Setting the Option Straps section earlier in this guide. T o provide power to the CO Power Unit operating in Independent mode: " Procedure 1.
Installation 2-13 3000-A2-GB41-40 May 1998 3. If you have one input power cable and one – 48 Vdc power source, plug the input power cable to either the – 48VDC A connector or the – 48VDC B connector . See Figure 2-5 . (The option strap settings for this power option are listed in T able 2-4 .
COMSPHERE –48 Vdc Central Office Power Unit 2-14 May 1998 3000-A2-GB41-40 496-13676-01 –48 Vdc P ower Source A –48V GRD Ground Returns Optional Fuses –48 Vdc B –48 Vdc A AMP Connectors Figure 2-7.
Installation 2-15 3000-A2-GB41-40 May 1998 Installing an SDCP If you want to mount an SDCP and the SDCP ribbon cable is not installed, remove the CO Power Unit from the carrier and follow the instructions in the SDCP Ribbon Cable Installation section in the COMSPHERE 3000 Series Carrier Installation Manual.
COMSPHERE –48 Vdc Central Office Power Unit 2-16 May 1998 3000-A2-GB41-40 3. Secure a nylon cable tie in the handle mounting holes. 4. Place the power module in the card guides and slide the power module to the rear of the carrier .
Installation 2-17 3000-A2-GB41-40 May 1998 Connecting the Alarm Contacts to a 6800 Series NMS Via a Modular 361 1 DSU The CO Power Unit can also send alarms to a 6800 Series NMS using the external alarm functions of a Modular 361 1 DSU.
COMSPHERE –48 Vdc Central Office Power Unit 2-18 May 1998 3000-A2-GB41-40 T o connect the alarm contacts to the external leads of a Modular 361 1 DSU (configured for alarm forwarding): " Procedure 1.
Installation 2-19 3000-A2-GB41-40 May 1998 3. If there is a V .35 cable on the bottom connector , labeled V .35 (3600/3500), of a Modular 361 1 DSU’ s rear connector plate, then plug the DB25 male end of the NMS adapter cable into the top connector of the rear connector plate.
COMSPHERE –48 Vdc Central Office Power Unit 2-20 May 1998 3000-A2-GB41-40 Air Filter and Brackets Installation (Optional) The air filter (part number 3000-F1-020) prevents dust from entering the carrier . It is an optional component and must be ordered separately .
Installation 2-21 3000-A2-GB41-40 May 1998 AIR FIL TER BRACKET AIR FIL TER BRACKET BO TTOM VIEW OF CO PO WER TRA Y GRILL ON CO POWER TRA Y #6 PHILLIPS-HEAD SCREWS #6 PHILLIPS-HEAD SCREWS 491-13697 Figure 2-1 1.
COMSPHERE –48 Vdc Central Office Power Unit 2-22 May 1998 3000-A2-GB41-40 This page intentionally left blank..
3-1 3000-A2-GB41-40 May 1998 T roubleshooting and Maintenance Overview 3-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indicators and Controls 3-1 .
COMSPHERE –48 Vdc Central Office Power Unit 3-2 May 1998 3000-A2-GB41-40 T roubleshooting If operating in the Basic mode and the power module’ s Power LED is red, check the DCEs in the carrier . If the LEDs on the DCEs are not lit, try resetting the power module.
T r oubleshooting and Maintenance 3-3 3000-A2-GB41-40 May 1998 Power Module Replacement Instructions If the power module fails, you should replace it immediately . In the Redundant mode of operation, you can replace a failed power module without disrupting service to the carrier .
COMSPHERE –48 Vdc Central Office Power Unit 3-4 May 1998 3000-A2-GB41-40 If an SDCP is mounted on this carrier , remove the SDCP by loosening the two captive screws and disconnecting the SDCP cable. Set the SDCP aside for mounting later on. Loosen the two captive screws on the failed power module.
A-1 3000-A2-GB41–40 May 1998 Interface Connections Overview A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC Inputs A-1 . . . . . . . . . . . .
COMSPHERE –48 Vdc Central Office Power Unit A-2 May 1998 3000-A2-GB41-40 J1 P6 P3 P1 –48VDC A P5 –48VDC B ALARM B ALARM A P4 P2 1 1 8 1 1 1 1 8 1 Network Management Connector P6 Connector P3 Connector –48 Vdc A Connector Alarm A Alarm B –48 Vdc B Connector 496-13699-0 1 –48 Vdc Common –48 Vdc Common Figure A-1.
Interface Connections A-3 3000-A2-GB41–40 May 1998 T able A-2 AMP Part Numbers Wire Size Insulation Diameter Contact Number 24 –18 A WG 04 ″ –10 ″ 350689-1 20 –14 A WG 06 ″ –13 ″ 350550-1 1 20 –14 A WG 13 ″ –20 ″ 350551-1 12 –10 A WG 20 ″ max.
COMSPHERE –48 Vdc Central Office Power Unit A-4 May 1998 3000-A2-GB41-40 CO Alarm System Outputs Both major (power) and minor (fan) alarms can be sent to the CO alarm system via the Alarm A and Alarm B output connectors. Figure A-1 illustrates these connectors.
Interface Connections A-5 3000-A2-GB41–40 May 1998 NMS Alarm Outputs CO alarms can be sent to a Modular 361 1 DSU (which will then notify a 6800 Series NMS) via a 6-wire modular jack on the CO Power Unit’ s backplane (see Figure A-1 ). (The Modular 361 1 DSU must be configured to forward alarms to a 6800 Series NMS.
COMSPHERE –48 Vdc Central Office Power Unit A-6 May 1998 3000-A2-GB41-40 Figure A-3. NMS Adapter Cable (Feature Number 3000-F2-510).
Glossary-1 3000-A2-GB41-40 May 1998 Glossary Basic mode A mode of operation in which the single power module in the CO Power Unit supplies power to the entire carrier . carrier The rack mounting that contains 17 slots: 1 control slot and 16 DSU or modem slots.
COMSPHERE –48 Vdc Central Office Power Unit Glossary-2 May 1998 3000-A2-GB41-40 shared diagnostic unit (SDU) A circuit card that plugs into a dedicated slot in the COMSPHERE 3000 Series Carrier to provide the shared diagnostic control panel and network management interfaces to the DSUs in the carrier .
Index-1 3000-A2-GB41-40 May 1998 Index A adapter cable, NMS, A-6 pin assignments, A-5 air filter , 1-4 brackets installation, 2-22 installation, 2-21 physical dimensions, 1-4 weight, 1-5 alarm contact.
COMSPHERE –48 Vdc Central Office Power Unit Index-2 May 1998 3000-A2-GB41-40 E EIA-232 interface, connecting NMS adapter cable, 2-19 enhanced support services, 1-6 environment, 1-4 equipment service.
Index Index-3 3000-A2-GB41-40 May 1998 P part numbers, AMP , A-3 physical dimensions, 1-4 pin assignments alarm system outputs, A-4 dc inputs, A-2 NMS adapter cable, A-5 power module, 1-4 physical dim.
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