COMSPHERE –48 Vdc CENTRAL OFFICE POWER UNIT INSTALLATION GUIDE Document No.
COMSPHERE –48 Vdc Central Office Power Unit 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. Warranty, Sales, and Service Information Contact your local sales representative, service representative, or distributor directly for any help needed.
Safety Instructions 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. This is a safety feature. Equipment grounding is vital to ensure safe operation. Do not defeat the purpose of the grounding type plug by modifying the plug or using an adaptor.
COMSPHERE –48 Vdc Central Office Power Unit Notices ! WARNING: 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. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Table of Contents Preface Objectives and Reader Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v v v 1. Introduction Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE –48 Vdc Central Office Power Unit 3. Troubleshooting and Maintenance Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indicators and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Module Replacement Instructions . . . . . . . . . . . . . . . . . . . . . Preventive Maintenance . . . . . . . . . . . . . . . . . .
List of Figures Figure Page 1-1. 1-2. 2-1. 2-2. 2-3. 2-4. 2-5. Central Office (CO) Power Unit with One Power Module . . . . . . . . . . . . . . . . . . . . 1-3 Central Office (CO) Power Unit with Two Power Modules . . . . . . . . . . . . . . . . . . . 1-3 Installing the Optional Second Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Option Straps (S1 through S5) on the CO Power Unit’s Backplane . . . . . . . . . . . . . 2-6 CO Power Unit Installation . . . . . . . . . . . . .
COMSPHERE –48 Vdc Central Office Power Unit List of Tables Table 1-1 2-1 2-2 2-3 2-4 2-5 2-6 A-1 A-2 A-3 A-4 iv Page Technical Specifications for Central Office (CO) Power Unit . . . . . . . . . . . . . . . . . Maximum Ambient Temperatures Permitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Settings for Basic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Settings for Independent Mode . . . . . . . . . . . . . . . . . . . . . . . .
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. It is assumed that you are familiar with the functional operation of data equipment, digital network services, data service units (DSUs), dial/lease modems, T1 channel service units (CSUs) and T1 data service units/channel service units (DSU/CSUs).
COMSPHERE –48 Vdc Central Office Power Unit vi May 1998 3000-A2-GB41-40
Introduction Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment Warranty and Support . . . .
COMSPHERE –48 Vdc Central Office Power Unit — Redundant mode – the mode in which two power modules supply power to the entire carrier. If one power module fails, the remaining power module assumes the full load of the carrier. To operate in this mode of operation, you must install an optional second power module in the CO Power Unit. NOTE Customer-supplied cable assemblies must comply with items 5 and 6 of the Important Safety Instructions at the front of this guide.
Introduction CO Power Unit Backplane Power Module Fan Power Module Handle 300 0D CP ow er Mo dule Pow er Fan Ala rm 98-13758-01 Captive Screws Captive Screws CO Power Tray Figure 1-1.
COMSPHERE –48 Vdc Central Office Power Unit Technical Specifications Technical specifications for the CO Power Unit (which includes one power module) are listed in Table 1-1. Table 1-1 (1 of 2) Technical Specifications for Central Office (CO) Power Unit Technical Specifications ENVIRONMENT Operating Temperature Criteria 32°F (0°C) to 122°F (50°C) (See the Installation Considerations section in Chapter 2 for additional operating temperature limits.
Introduction Table 1-1 (2 of 2) Technical Specifications for Central Office (CO) Power Unit Technical Specifications WEIGHT CO Power Unit (includes one power module) CO Power Unit (includes two power modules) Criteria 10.6 pounds (4.8 kg) 15.8 pounds ( 7.2 kg) Power Module 5.2 pounds ( 2.4 kg) Air Filter 0.2 pounds ( 0.1 kg) CENTRAL OFFICE (CO) ALARM RELAY CONTACTS 0.1 amp maximum at 70 Vdc maximum APPROVALS Underwriters Laboratories, Inc.
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Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Basic Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Independent Mode of Operation . . . . . . . . . . . .
COMSPHERE –48 Vdc Central Office Power Unit directly above the bottom carrier should have its power module installed in the right side of its CO power tray. Then, the next carrier directly above should have its power module installed in the left side of its CO power tray, and so on for the remainder of the carriers in the cabinet. For information on removing and installing a power module, see the Power Module Replacement Instructions section in Chapter 3.
Installation Redundant Mode of Operation Alarm Forwarding to a 6800 Series NMS 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. Operation of the CO Power Unit continues, but it is recommended that you replace the failed power module as soon as possible. Do not remove a failed power module until a replacement is available.
COMSPHERE –48 Vdc Central Office Power Unit CO Power Unit Installation 4. Install the Shared Diagnostic Control Panel (SDCP) on the carrier in which you installed the CO Power Unit, if desired. (See the Installing an SDCP section.) The CO Power Unit is installed at the bottom of the carrier. You will need a large, flat-blade screwdriver to install the CO Power Unit and a medium, flat-blade screwdriver to set the option straps. 5.
Installation Power Module Provided With CO Power Unit 300 0D CP ow er Mo dule Po we r Fan Ala rm 300 0D CP ow er Mo dule Po we r Fan Ala Optional Second Power Module rm 98-13751-02 Figure 2-1.
COMSPHERE –48 Vdc Central Office Power Unit Setting the Option Straps Table 2-2 Settings for Basic Mode S1 Lowered 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). S2 Lowered S3 Lowered S4 Lowered S5 Lowered NOTE Older power modules have straps labeled S1 and S2. These should always be in the raised position.
Installation Independent Mode that the screws are securely touching the contacts, but do not screw the straps too tight because doing so can damage the equipment. 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 Table 2-3.
COMSPHERE –48 Vdc Central Office Power Unit Installing the CO Power Unit To install 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. (For instructions on how to install the SDCP ribbon cable, see the SDCP Ribbon Cable Installation section in the COMSPHERE 3000 Series Carrier Installation Manual.
Installation Built-in Retainer Clips SDCP Ribbon Cabll Space Between CO Power Tray and Power Module CO Power Tray Flanges 300 0D CP ow SDCP Ribbon Cabll er Mo dule 3000 DC Po wer Mod ule Left Power Module Po we r Fa n Ala rm 3000 DC Po wer Mod ule Po we r Fa n Ala rm Ground Strap 496-13681-02 Figure 2-3. CO Power Unit Installation 3.
COMSPHERE –48 Vdc Central Office Power Unit BACKPLANE CONNECTOR CABLE ASSEMBLIES NETWORK MANAGEMENT CONNECTOR P20 CAPTIVE SCREW P6 (OUTPUT) –48VDC B (INPUT) ALARM B P19 –48VDC A (INPUT) P3 (OUTPUT) ALARM A CAPTIVE SCREW 497-13673-01 Figure 2-4. COMSPHERE 3000 Series Carrier (Rear) Providing Power to a CO Power Unit (AMP part number 350550-1) to attach the connector to your – 48 Vdc power input cable.
Installation AMP Connectors –48 Vdc A –48 Vdc B Ground Return Optional Fuse –48V GRD –48 Vdc Power Source A 496-13755-01 Figure 2-5.
COMSPHERE –48 Vdc Central Office Power Unit If you have two input power cables and one – 48 Vdc power source, plug one input power cable into the – 48VDC A connector and the second input power cable into the – 48VDC B connector. Then, connect both power cables into the same – 48 Vdc power source. See Figure 2-7. (The option strap settings for this power option are listed in Table 2-3.) NOTE The option straps must be set for the Independent mode of operation.
Installation 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 Table 2-4.) If you have two input power cables and one – 48 Vdc power source, plug one input power cable to the – 48VDC A connector and the second input power cable to the – 48VDC B connector.
COMSPHERE –48 Vdc Central Office Power Unit AMP Connectors –48 Vdc A –48 Vdc B Ground Returns Optional Fuses –48V GRD –48 Vdc Power Source A 496-13676-01 Figure 2-7.
Installation 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. If you want to mount a shared Diagnostic Control Panel (SDCP) on the carrier and the SDCP ribbon cable is installed (refer to Figure 2-8): Procedure 1. Raise the carrier 1.5 inches above the carrier below it.
COMSPHERE –48 Vdc Central Office Power Unit 3. Secure a nylon cable tie in the handle mounting holes. NOTE The CO alarm cables and mating connectors are customer-supplied components. 4. Place the power module in the card guides and slide the power module to the rear of the carrier. When sliding the left power module into the CO Power Unit, hold the SDCP ribbon cable to the left of the power module. Then, tighten the two captive screws on the front of the power module (see Figure 2-3).
Installation Connecting the Alarm Contacts to a 6800 Series NMS Via a Modular 3611 DSU The CO Power Unit can also send alarms to a 6800 Series NMS using the external alarm functions of a Modular 3611 DSU. After the CO Power Unit is installed, connect the power unit to the external leads of a Modular 3611 DSU by using an NMS adapter cable. After setting the jumpers, reinstall the Modular 3611 DSU in the carrier.
COMSPHERE –48 Vdc Central Office Power Unit To connect the alarm contacts to the external leads of a Modular 3611 DSU (configured for alarm forwarding): " Procedure 1. At the rear of the carrier, plug the 6-wire modular plug end of the NMS adapter cable into the J1 connector (a 6-position modular jack) on the CO Power Unit’s backplane (see Figure 2-9). rear connector plate, remove the ferrite choke and the EIA-232 cable.
Installation 3. If there is a V.35 cable on the bottom connector, labeled V.35 (3600/3500), of a Modular 3611 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. Note that the DB25 female end of the NMS adapter cable has no connection. See Figure 2-10. Figure 2-10. Connecting an NMS Adapter Cable to a Modular 3611 DSU When the DTE Interface is V.
COMSPHERE –48 Vdc Central Office Power Unit 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. However, the air filter brackets and screws are supplied with the CO Power Unit. Keep in mind that the air filter brackets take up an additional 0.6 inches (1.
Installation #6 PHILLIPS-HEAD SCREWS AIR FILTER BRACKET #6 PHILLIPS-HEAD SCREWS AIR FILTER BRACKET GRILL ON CO POWER TRAY 491-13697 BOTTOM VIEW OF CO POWER TRAY Figure 2-11.
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Troubleshooting and Maintenance Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indicators and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE –48 Vdc Central Office Power Unit Troubleshooting 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. (Reset the power module by removing the power module and then reinstalling it.) If the Power LED remains red after resetting the power module, you should replace the power module. Do not remove the failed power module until a replacement power module is available.
Troubleshooting and Maintenance Power Module Replacement Instructions To replace a power module (refer to Figure 3-2): NOTE 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. In the Independent mode of operation, you will only disrupt service to one-half of the carrier (the affected half).
COMSPHERE –48 Vdc Central Office Power Unit 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. Then, remove the failed power module from the CO power tray by holding onto the nylon cable tie and sliding the power module out. 3.
Interface Connections Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CO Alarm System Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NMS Alarm Outputs . . . . . . . . .
COMSPHERE –48 Vdc Central Office Power Unit P6 Connector Network Management Connector J1 P6 P3 1 8 8 ALARM A P2 1 P5 –48VDC B –48 Vdc A Connector 1 1 1 P4 –48 Vdc 1 ALARM B –48 Vdc B Connector P3 Connector 1 Common P1 –48VDC A Common –48 Vdc Alarm B Alarm A 496-13699-01 Figure A-1. CO Power Unit (Rear) Table A-1 Pin Assignments of the DC Inputs Pin Number A-2 Assigned To ...
Interface Connections Table A-2 AMP Part Numbers 1 Wire Size Insulation Diameter Contact Number 24 –18 AWG 04″–10″ 350689-1 20 –14 AWG 06″–13″ 350550-1 1 20 –14 AWG 13″–20″ 350551-1 12 –10 AWG 20″ max. 640310-3 Six contacts are provided in the installation kit. Contact –48 Vdc Contact Connector Housing Common 496-13674-01 Figure A-2.
COMSPHERE –48 Vdc Central Office Power Unit 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. The connector on the CO Power Unit’s backplane is an AMP 5-position single row header. The mating connector is an AMP MTE-type connector (part number 103957-4). A contact closure is provided between Pin Numbers 1 and 2 to indicate a power failure.
Interface Connections NMS Alarm Outputs voltage output circuits, and that a fan failure alarm signal is sent if the fan speed falls below 1900 rpm. CO alarms can be sent to a Modular 3611 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 3611 DSU must be configured to forward alarms to a 6800 Series NMS.) Table A-4 lists the pin assignments for the NMS adapter cable. Figure A-3 illustrates the NMS adapter cable.
COMSPHERE –48 Vdc Central Office Power Unit Figure A-3.
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. data communication equipment (DCE) A device, such as a DSU, that provides an interface between a DTE device and a digital or analog network. (Also called data circuit-terminating equipment.
COMSPHERE –48 Vdc Central Office Power Unit 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. It translates the network management protocol to the devices in the carrier and routes incoming messages to the appropriate slots.
Index A C 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 contacts, connecting to alarm system, 2-17 NMS, 2-18 forwarding, 2-3 outputs, NMS, A-5 relay contacts, 1-5 system connecting, 2-17 outputs, A-4 ambient temperatures, 2-2 AMP part numbers, A-3 approvals, 1-5 carrier, rear, 2-11 CO power, unit with one power module, 1-3 with two power modules, 1-3 CO power unit installation, 2-4, 2-9, 2-10 physical
COMSPHERE –48 Vdc Central Office Power Unit E J EIA-232 interface, connecting NMS adapter cable, 2-19 enhanced support services, 1-6 environment, 1-4 equipment service, 1-5 support, 1-5 warranty, 1-5 jumpers, 2-18 L LED status indicators, 3-1 M F maintenance, 3-1 preventative, 3-4 mode Basic, 1-2 Independent, 1-2 Redundant, 1-2 features, 1-2 H heat dissipation, 1-4 height air filter, 1-4 CO power unit, 1-4 power module, 1-4 humidity, 1-4 N NMS adapter cable, A-6 connecting, 2-19, 2-20 pin assignme
Index P T 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 dimensions, 1-4 replacement, 3-3 replacing, 3-3 weight, 1-5 requirements, 1-4 to CO power unit, 2-11 preventative maintenance, 3-4 providing power, 2-11 R Redundant mode, 1-2, 2-3 strap settings, 2-8 using one power source, one cable, 2-12 using one power source, two cables, 2-15 using two power sources, 2-14 relative humidity, 1-4 replacemen
