GDC 087R701-000-02 Issue 2 - May 1998 Installation and Operation UAS 7000 Shelf/Enclosure General DataComm
Manual Revision History Shown below is a chronological listing of revisions to this manual. The issue number, date, and synopsis of revised materials are included to provide the reader with a comprehensive manual history. Note In keeping with the policy of continuing development carried out by General DataComm Inc., the information in this manual is subject to revision without notice. Issue Date Description 1 Feb. 97 First issue. 2 May 98 Updated and expanded manual and added information on NIU/DIU 7624 card..
Table of Contents Shelf Overview... 1... 1 10-Slot MultiPak Enclosure... 3 Zones... 4 Power Supplies... 4 Load Number... 4 Plug-In Card Retention Bar Installation... 5 GDC Open Rack and Cabinet Profiles... 5 Cooling Requirements... 6 Fan Tray Assemblies... 11 Air Baffles (Shelf Only)... 11 Shelf Mounting... 12 19-Inch Rackmounting... 12 Flush Mounting... 12 Center-of-Gravity Mounting... 12 23-Inch Rackmounting... 13 Fan Tray Assembly Mounting... 15 19-Inch Rackmounting... 15 Flush Mounting... 16 Center-of-Gravity Mounting... 16 Air Baffle Installation... 17 Connector Panels... 19 Primary Power Connection... 19 Rack and Cabinet Test... 19 Single Shelf Installation... 19 Dual Shelves... 21 Grounding... 22 EMI (Electromagnetic Interference)... 23 Tying Signal Ground to Chassis Ground... 24 Power Supply Installation... 27 DC-Powered Shelves... 27 AC-Powered Shelves... 28 GDC 087R701-000-02 i
Table of Contents (Cont d) Redundant Power Supplies... 30 Inserting Power Supplies... 30 Enclosure Power Supplies... 31 Trouble-Shooting... 32 Fuse Replacement... 32 Alarm Card... 34 Alarm Card Options... 36 Zone 1 Connections For Product Classes... 37 50-Pin Telco Mapping... 38 Cabling the 7624... 39 Mixing Cards in The... 39 Equipment List... 40 ii GDC 087R701-000-02
Shelf Overview The SpectraComm/UAS (Universal access System) Shelf houses a variety of transmission products. Each UAS product card interfaces with a standalone unit located at the remote customers site. The is identical to the SpectraComm Shelf with the exception of the connector backplanes used on the rear panel. This manual describes the only and will be referred to as such throughout this manual. Further, although the UAS 7000 product line can be AC or DC powered, the emphasis will be be on DC-powered shelves and their components which are found predominately in the Telco environment. The Central Office in the United States is separate from the Customer Premises. In some International applications PTTs (Postal Telephone & Telegraph) own and operate both the CO and the Customer Premises Equipment. Therefore, voltage (AC versus DC) and cabling requirements may vary. The (see Figure 1) is constructed of formed sheet metal components and provides the following features: Measures 7 inches (178 mm) high (4 rack units) by 17.5 inches (445 mm) wide by 11.5 inches (292 mm) deep. 16 module slots and 2 power supply slots per shelf Each shelf accepts one or two power supplies. Plug-in power supply modules available in the following voltages: Single DC supply handles both -48 and -60 Vdc station batteries 100/117 Vac (47-63 Hz) 220/240 Vac (47-63 Hz) GDC 087R701-000-02 1
Multiple shelf expansion to a second shelf provides an extra two power supply slots and 16 module slots May be housed in a 19" or 23" cabinet or open rack. Removable backplanes called connector panels. UNIVERSAL BacKPLANE EXT RING EXT -V BAT GND F GND RING GND BAT TB1 1 General Datacomm, Inc. Middlebury, CT. MODEL: MS - 1 S/N THIS ENCLOSURE MAY CONTAIN FCC REGISTERED EQUIPMENT. SPECIFIC REGISTRATION INFORMATION IS CONTAINED ON INDIVIDUAL UNITS J19 J18 J17 J51 CAUTION HIGH VOLTAGE DISCONNECT POWER BEFORE SERVICING J49 LISTED J52 J 50 J22 J21 J20 100-120Vac 4A 50-60Hz J16 J15 J14 J13 J12 J11 J10 J9 J8 J7 J6 J5 J3 J2 J1 220-240Vac 2A 50-60Hz Figure 1 Rear View (ac Power Supply Shown) 2 GDC 087R701-000-02
10-Slot MultiPak Enclosure Although the UAS 7000 product cards may be housed in the 10-slot (MultiPak) enclosure they are primarily used in a Central Office environment, and installed in an open rack or cabinet using the. The Enclosure may be used for bench-testing cards away from the rack environment. This requires using the modular connectors at Zone 1 located at the rear of the enclosure. If you desire to use the enclosure for this purpose, the 8-pin modular pin-outs on the enclosure are crossreferenced with the the shelves Zone 1 50-pin connectors in Table 5 and Table 6 The MultiPak (see Figure 2) enclosure is constructed of molded plastic and formed sheet metal components measuring 9 inches (229 mm) high by 13.5 inches(343 mm) wide by 11.5 inches (292 mm) deep. The enclosure has a hinged plastic door assembly with a removable tinted window that allows you to view the product card s LEDs. Other features are: Low profile, compact design for desktop use Packaging for 10 plug-in-modules Separate rear connector zones for network and business equipment connections. Plug-in power supply modules are available in the following voltages: 100/120 Vac (47-63 Hz) 220/240 Vac (47-63 Hz) THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST accept ANY INERTFERENCE RECEIVED. INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION. THIS ENCLOSURE MAY CONTAIN FCC REGISTERED EQUIPMENT SPECIFIC REGISTRATION. INFORMATION IS CONTAINED ON INDIVIDUAL UNITS. Figure 2 MultiPak Enclosure GDC 087R701-000-02 3
Zones The rear panel of both the shelf and the enclosure is divided into three horizontal rows, (or Zones). Zone 1 (located at the top) and Zone 3 (located at the bottom) accept a connector panel. Zone 1 is used for network interfaces, Zone 3 is usually used for business equipment, and Zone 2 is used for internal busses and power. Figure 3 shows the front view of the shelf. Zone 1: Network Connections Power Supply Power Supply Zone 2: Signal, Ground, Management and Power Distribution to and from Plug-In-Modules Zone 3: Business Equipment (DTE) Connections Figure 3 Front View - Shelf Power Supplies Shelf - Each shelf accepts one or two AC or DC power supplies. The DC power supply is the DPS- 11 (-48, 60 Vdc) at 96 watts per shelf. One supply can power the entire shelf. A second supply provides power supply redundancy. The AC power supply choices are: GPS-11 (100/120 Vac) GPS-11E (220/240 Vac) Note Power supplies in a redundant power system run cooler than non-redundant systems because the load is divided between them. Thus, the cooling requirements may be lower for a system with redundant supplies. Load Number Enclosure - The enclosure uses a GPS-13 (100/120Vac) or GPS-13E (220/240 Vac) power supply for non-redundant use only. The supply is rated at 100 watts total (+5 Vdc, ±12 Vdc. When configuring the shelf or enclosure it is necessary to ensure that the total load of all the product cards does not exceed the capacity of the power supply(s). The Load Number is a tool which enables you to calculate the power consumption of the system when it is configured. The Load Number is normalized to the number of slots in a shelf (16), or in an enclosure (10). For example, in a single shelf the sum of the Load Numbers should not exceed 16, and in a multiple shelf, the sum should not exceed 32. The Load Number should not exceed 10 in an enclosure. Each power supply is designed to power plug-in product cards whose Load Numbers total up to no more than 16 (or 10). Exceeding these Load Number requirements violates GDC warranties with regard to performance of that system. 4 GDC 087R701-000-02
An example calculation using Load Numbers follows: In a UAS shelf, you install one DPS-11 power supply, one SCM SpectraComm Manager Card, and five NIU/DIU 7624 product cards. The Load Number for the SCM Card is 1.0 and the Load Number for one NIU/DIU 7624 card (dual slot) is 2.0. Therefore: 1+10 (5x2) = 11 which is less than 16. If you add an Alarm Card which has a Load Number of 0.4 you still would be within the recommended requirements. The Load Number for each product card is listed in the Specifications table in each product manual. Plug-In Card Retention Bar Installation The optional Plug-In Card Retention Bar Kit (No. 010K021-001) prevents cards from being unseated unintentionally. The kit includes an installation instruction sheet. To install or remove the bar, refer to those instruction sheets. GDC Open Rack and Cabinet Profiles You may use your own 19" or 23" open rack or cabinet when installing the or General DataComm s offerings. The following paragraphs and illustrations describe guidelines for using GDC open racks (called Data Service Bays) and cabinets. Your company may have specific procedures for installing racks or cabinets to the floor of the selected location. Furthermore, in some cases, such as earthquake zones, local standards and procedures may apply. In such cases, follow your company s polices and local practices, using the following information as a guide only. GDC s Data Service Bays and Cabinets are designed for modern Telco central offices. They support a complete range of data applications and the advantages of controlled access for testing and maintenance, as well as conformity with a variety of central office physical and environmental specifications. GDC also provides peripheral equipment such as Fuse and Alarm Panels (GDC Pub. No. 010R401-000), Fan Trays, and Air Baffles (the later GDC components are described in this manual) that may be used along with shelf installation. Rack and EP-4 Cabinet features: Height 7 6" or 9 0" (rack), 24.5" (EP-2 Cabinet), 63" (EP-4 Cabinet). 19" mounting for rack and cabinet. Fuse and Alarm panels -48Vdc power supplies Blowers (EP-4/dc) Cable access is through the bottom, rear or top of the cabinet or through removable side panels. GDC 087R701-000-02 5
Detailed information on GDC s racks, cabinets and fuse and alarm panels can be found in the following GDC Publication manuals: Data Service Bays - Call your local GDC Sales Office for information on GDC s Data Service Bays. EP-4 CAB 48V DC Version GDC Pub. No. 010R308-000 EP-4, 4/B, 4D Cabinets - 010R309-000 EP-4E Cabinet - 010R310-000 Fuse/Alarm Panel - 010R401-000 Figure 5, Figure 6 and Table 1 describes the shelf profiles so that you can correctly order and install the UAS Shelves in GDC open racks or cabinets. You must first consider several factors. You must know: Are you mounting the shelves in a EP cabinet or an open frame rack? How many shelves are you installing? Do you prefer redundant or non-redundant power system? If you are using redundant supplies, are the shelves power-independent or is it an interconnected, dual-shelf system? Do you prefer (or require) forced air cooling or convection cooling? The following rules should be adhered to when stacking UAS Shelves in Open Frame or EP Cabinets. The rules are based on worst case power requirements (fully loaded 96 Watt power consumption). Although lightly loaded shelves require less cooling, it is recommended that these rules be followed to eliminate the necessity to upgrade in the field. In any case, be sure to use blank filler panels in any unused slot of the shelf when a fan is used. Cooling Requirements We recommend that you mount the shelf in an area of unrestricted air flow. Do not block the top, bottom, and sides. There must be adequate provision for the circulation of cooling air and exhaust of warm air. Refer to shelf configuration, mounting, fan tray and air baffle use. Important To provide proper air flow through a cabinet or rack, you must follow the following guidelines: In a cabinet application that uses a fan, there must be no open space between components, and you MUST install blank front panels in all unused slots. When you install only one power supply, you MUST install a power supply blank front panel, P/N 010D727-001, to cover the unused slot. Failure to do so may result in overheating and subsequent power supply shutdown. There must be adequate provision for the circulation of cooling air and exhaust of warm air. 6 GDC 087R701-000-02
Note For the following illustrations, refer to subsequent paragraphs "Fan Tray Assemblies" and "Air Baffles". They explain the use of fans and baffles within the racks or cabinets. GDC EP-2M Cabinet GDC EP-2M Cabinet GDC EP-2M Cabinet Fan Assembly 3.5-inch Baffle A. One Shelf (Redundant or Non-Redundant Power Supplies) B. Two Shelves (Redundant Power Supplies C. Two Shelves (Redundant Power Supplies) Figure 4 UAS Shelves In a GDC EP-2M Cabinet GDC 087R701-000-02 7
GDC EP-4 Cabinet GDC EP-4 Cabinet GDC EP-4 Cabinet Fan Assembly Circuit Breaker w/plenum Blower Assembly Circuit Breaker w/plenum Blower Assembly Circuit Breaker w/plenum Blower Assembly A. One Shelf B. Two Shelves C. Four Shelves GDC EP-4 Cabinet GDC EP-4 Cabinet Fan Assembly Fan Assembly Circuit Breaker w/plenum Blower Assembly Circuit Breaker w/plenum Blower Assembly D. Six Shelves D. Eight Shelves Figure 5 UAS Shelves In a GDC EP-4 Cabinet 8 GDC 087R701-000-02
Open Frame Rack Open Frame Rack Open Frame Rack Fan Assembly A. One Shelf Open Frame Rack Fan Assembly D. Four Shelves C. Two Shelves (Redundant B. Two Shelves (Non-Redundant Power Supplies) Open Frame Rack 3.5-inch Baffle Continuous shelf/baffle stack 3.5-inch Baffle 3.5-inch Baffle E. Two or More Shelves with baffles (Non-Redundant Power Supplies) C. Two Shelves (Redundant Power Supplies) Open Frame Rack 3.5-inch Baffle Continuous shelf/baffle stack 3.5-inch Baffle F. Two or More Shelves (Redundant Power Supplies) Figure 6 UAS Shelves In a GDC Service Bay (Open Racks) GDC 087R701-000-02 9
Table 1 Shelf Configurations EP-2M Cabinet Power Supplies Cooling Method Fan 1 Baffle 2 1 shelf non-redundant optional optional redundant optional optional 2 shelves non-redundant 1 required 1 required EP-4 1 shelf non-redundant optional not applicable redundant optional not applicable 2 shelves non-redundant optional not applicable redundant optional not applicable 4, 6, 8 shelves non-redundant 1 required not applicable Data Service Bay (open rack) redundant 1 required not applicable 1 shelf non-redundant optional optional redundant optional optional 2 shelves non-redundant 1 required 1 required redundant optional optional 4 shelves non-redundant 1 required 3 required redundant 1 required 1 required 6 shelves non-redundant 2 required 5 required redundant 2 required 2 required 8 shelves non-redundant 2 required 7 required redundant 2 required 3 required Notes: Use of the fan assembly for forced air cooling is optional in single-shelf configurations and in configurations with two shelves with redundant supplies. Most other configurations require one or more fan assemblies. You may use the baffle assembly (for convection cooling) instead of the fan assembly (for forced air cooling) only in an EP-2M cabinet or open frame rack with redundant power supplies. Do not use it in an EP-4 cabinet. 10 GDC 087R701-000-02
Fan Tray Assemblies You can install Fan Tray Assemblies for forced air Aux. Fan Assembly Part No. cooling in all racks and cabinets. One fan tray can cool two shelves below it and two shelves above it, drawing DC 010B162-001 cool air in at the bottom and exhausting warm air at the top. This means that you can install two shelves below the bottom fan tray, two shelves above the top fan tray, and up to four shelves between two fan trays. You cannot AC Domestic AC Export 010B160-001 010B161-001 install a Fan Tray Assembly between a main shelf and expansion shelf. In an EP-4 cabinet, fewer fan trays are required because the cabinet includes blowers at the bottom and fans at the top. The DC-powered Fan Tray Assembly, illustrated in Figure 7, has an front panel Alarm indicator. It is normally off, and lights when the internal fan(s) lose power. You may use the rear panel external alarm contacts for the same purpose: ALM COM = Common, ALM N.C. = Normally closed, ALM N.O. = Normally open. The AC-powered Fan Tray Assembly has no indicators, and there are provisions for a line cord at the rear of the assembly. Alarm Indicator LED Alarm FAN TRAY ASSEMBLY General Datacomm Inc. Middlebury, CT. Figure 7 DC-Powered Fan Tray Assembly (Front View) Fuse Replacement The DC and AC Fan Tray Assemblies have a fuse mounted on the rear panel.(figure 8) When replacing the fuse, be sure to use the correct type (fuse information is printed on the left side of the rear panel). Station battery input terminal block External alarm relay connection Fuse holder FUSE: 5 X 20 mm, 250 V T 100 V ~,.8 AMP 50/60 Hz 120 V ~,.8 AMP 50/60 Hz 220-240 V ~,.5 AMP 50/60 Hz -48 V dc,.5 AMP CAUTION DISCONNECT POWER BEFORE SERVICING FOR CORRECT SIZE FUSE SEE CHART BAT V + - COM N.O. ALM General Datacomm, Inc. Middlebury, CT. FAN TRAY MODEL Serial No. Figure 8 DC-Powered Fan Tray Assembly Fuse Location (Rear View) Air Baffles (Shelf Only) In an open rack, you can install Air Baffles, instead of fan trays, for convection cooling. The baffle is simply sheet metal bent at an angle to divert hot air rising. The baffle draws cool air in at the bottom (for the shelf above it) and exhausts warm air at the top (from the shelf below it). With non-redundant supplies, you must install a baffle above every shelf. With redundant supplies, you must install a baffle above every two shelves. (A baffle is not required at the very bottom or the very top, only between shelves.) The GDC part number for the baffle assembly is 010D787-001. You cannot install a baffle between a main shelf and expansion shelf. GDC 087R701-000-02 11
Shelf Mounting You can mount the shelf in a standard 19- or 23-inch wide equipment rack or cabinet, such as one of GDC s EP Series 19-inch cabinets. You can move the brackets, as illustrated in Figure 9, to provide flush or center-of-gravity mounting, and to accommodate typical racks or cabinets. For all racks and cabinets, mount the shelf from the front. Important Be sure to install shelves and power supplies as described in this manual. Failure to do so may result in overheating and subsequent power supply shutdown. Seven hole pairs for bracket screws 10 screws hold side plates to frame - DO NOT REMOVE FRONT REAR Position brackets along side plate for various mounting positions Two slots in bracket fit over side plate screws Two screws hold bracket to side plate 19-inch/23-inch mounting bracket Right Side View Figure 9 Rackmount Shelf Bracket Installation 19-Inch Rackmounting The shelf is shipped for 19-inch rackmounting, with the brackets installed with the long flange against the shelf side plate, as illustrated in Figure 10. Position the shelf at the desired height and secure it with the included mounting hardware (screws and washers). Flush Mounting For flush mounting, use hole pair #2, and install each bracket with the short flange facing the front. Center-of-Gravity Mounting For center-of-gravity mounting, use hole pair #5, and install each bracket with the short flange facing the front. 12 GDC 087R701-000-02
REAR Top View FRONT Flush position (use hole pair #2) center-of-gravity position (use hole pair #5) FRONT REAR Right Side View Figure 10 Rackmount Shelf Bracket Installation (19-Inch Rack) 23-Inch Rackmounting To mount the shelf in a 23-inch rack, remove the brackets (held in place with two screws) and install them with the short flange against the shelf s side plate, as illustrated in Figure 11, using the original screws. Position the shelf at the desired height and secure it with the included mounting hardware (screws and washers). Flush Mounting (P/N 010K348-001) For flush mounting, use hole pair #1, and install each bracket with the long flange facing the front. GDC 087R701-000-02 13
Bulbe Angle Frame Mounting (P/N 010K347-001) For Bulbe Angle Frame mounting, use hole pair #3, and install each bracket with the long flange facing the rear. #5 XBAR Frame Mounting For #5 XBAR Frame mounting, use hole pair #4, and install each bracket with the long flange facing the rear. Unequal Flange Frame Mounting There are two types of Unequal Flange Frames. For the one type, use hole pair #5, and install each bracket with the long flange facing the front. For the other type, use hole pair #7, and install each bracket with the long flange facing the rear. M Frame Mounting For M Frame mounting, use hole pair #6, and install each bracket with the long flange facing the rear. Top View Flush position (use hole pair #1) FRONT Bulbe Angle Frame position (use hole pair #3) #5 XBAR Frame position (use hole pair #4) Unequal Flange Frame position (use hole pair #5) M Frame position (use hole pair #6) Unequal Flange Frame position (use hole pair #7) FRONT REAR Figure 11 Rackmount Shelf Bracket Installation (23-Inch Rack) 14 GDC 087R701-000-02
Fan Tray Assembly Mounting You may need to install one or more Fan Tray Assemblies to provide proper air flow through the cabinet or rack. Each fan tray uses 1.75 inches of vertical rack space. For all racks, mount the fan tray from the front of the rack. To mount a fan tray: 1. If required, install mounting brackets as described below. 2. Place the fan tray on top of the existing shelf, with the front panel lettering right side up and readable. Proper orientation of the fan tray is critical. 3. Mount the next shelf directly above the fan tray: Do not leave any open space between them. The fan tray mounts flush in a 19-inch rack without modification. Other mounting arrangements require mounting bracket kits, as described below and illustrated in Figure 12. Two holes sets for bracket screws NOTE: The holes are not numbered on the fan tray - they are numbered in this illustration only for easy reference 1 2 FRONT REAR Position brackets along side plate for various mounting positions (One position for 19-inch, two for 23-inch) 19-inch/23-inch center-of-gravity mounting bracket Three screws hold bracket to side plate Right Side View Figure 12 Rackmount Fan Tray Bracket Installation 19-Inch Rackmounting The fan tray is shipped for 19-inch flush rackmounting in an EP Series cabinet, for example (the front panel has mounting holes spaced for a 19-inch rack, eliminating the need for brackets). Position the fan tray at the desired height and secure it with the included mounting hardware (screws and washers). Figure 13 illustrates mounting the fan tray in a 19-inch rack GDC 087R701-000-02 15
Flush Mounting For flush mounting, install the fan tray as shipped. Center-of-Gravity Mounting For center-of-gravity mounting, use two holes in set #1 and a hole in set #2,and install each bracket included in the kit (GDC Part No. 010K347-001) with the short flange facing the front, using the included screws. REAR Top View FRONT Flush position (use front panel) Center-of-gravity position (use two holes in hole set #1 and one hole in set # 2) FRONT REAR Right Side View Figure 13 Rackmount Fan Tray Bracket Installation (19-Inch Rack) 23-Inch Rackmounting To mount the fan tray in a 23-inch rack, install the brackets with the short flange against the fan tray s side plate, as illustrated in Figure 14, using the included screws. (Flush mounting utilizes front panel adapters.) Position the fan tray at the desired height and secure it with the included mounting hardware (screws and washers). Flush Mounting For flush mounting, install each front panel adapter included in the kit (GDC P/N 010K348-001) with the painted surface facing the front. Use two of the included screws to attach each adapter to the front panel. Bulbe Angle Frame Mounting For Bulbe Angle Frame mounting, use hole set #1, and install each bracket included in the kit (GDC P/N 010K347-001) with the long flange facing the front. 16 GDC 087R701-000-02
#5 XBAR Frame Mounting For #5 XBAR Frame mounting, use hole set #2, and install each bracket included in the kit (GDC P/N 010K347-001) with the long flange facing the front. REAR Top View FRONT Flush position (use bracket adapter) Bulbe Angle Frame Position (use hole set #1) #5 XBAR Frame position (use hole set #2) FRONT REAR Right Side View Figure 14 Rackmount Fan Tray Bracket Installation (23-Inch Rack) Air Baffle Installation You may need to install one or more Air Baffles (P/N 010D787-001) to provide proper air flow through the cabinet or rack. Each baffle uses 3.5 inches of vertical rack space and is approximately 17 inches long by 9 inches wide. See Figure 15. Because the baffle sits on top of the shelf and does not require brackets, installation instructions are the same for 19-inch and 23-inch racks. To install an Air Baffle, as illustrated in Figure 15: 1. Place the baffle on top of the existing shelf, with the sloped surface rising from the front to the rear. Proper orientation of the baffle is critical. 2. Slide the baffle s side panels into the gaps at the edges of the shelf to lock it in place. 3. Mount the next shelf directly above the baffle: Do not leave any open space between them. 4. The shelves above and below the baffle prevent it from moving, so no fasteners are required to keep it in place. GDC 087R701-000-02 17
Top View Baffle side plates fit into these gaps Air Baffle Air Baffle Front View Side View of Shelf Power Supply Filler Panel Front View of Shelf Figure 15 Air Baffle Installation 18 GDC 087R701-000-02
Connector Panels The shelf supports a variety of UAS family products by using field-replaceable rear connector panels. The rear panel is divided into three zones, with unique connector panels for Zones 1 and 3. Each connector panel has card edge connectors on one side to mate with the plug-in modules and one of several types of connectors on the other side to connect to the network or business equipment (DTE). Note The shelf and enclosure is shipped with the proper connector panels installed for your system. Zone 1 Shelf - supports six 50-pin (25-pair) connectors. Zone 3 Shelf - supports 16 25-pin DB25 connector panels. The MultiPak Enclosure uses 8-pin modular jacks in Zone one, and 25-pin DB25 connectors in Zone 3. Primary Power Connection DC - Primary and secondary DC power is applied from your facility secondary 48Vdc distribution panel to your fuse and alarm panel at the top of each rack. The fuse and alarm panel then distributes fused -48Vdc to each shelf via your power and alarm cable harness. Use No. 16 to 12 AWG stranded, insulated copper wire for battery connections, sized to carry 3 amps at -48 Vdc nominal per shelf. AC - AC-powered shelves, including Fan Tray Assemblies, are equipped with IEC-type AC power cords. Plug the power cord into a polarized outlet proving the required AC power. Important In a multiple-shelf system, you must provide primary power to each shelf and Fan Tray Assembly. The Bus Power cable, described in Figure 18, links the power supply outputs together to provide the system s redundant, load-sharing features, but it does not carry primary power. Rack and Cabinet Test Input Voltage - Measure and confirm -42 to -56 Vdc (-48 Vdc nominal) at the battery connections on the rear of your fuse and alarm panel. Single Shelf Installation The is equipped with reversible adapter ears which permit it to be installed in either a standard 19-inch (483mm) wide equipment rack/cabinet or a 23-inch (584mm) wide rack/cabinet. It is secured with the available hardware through four slotted holes in the flanges at the front edges of the shelf assembly. The shelf address jumper J50 (located on the rear of the shelf next to J51 - recessed under a protective cover - tells the product cards whether they are in an upper shelf or a lower shelf of a dual shelf configuration. J50 for a single shelf is always set to upper (its default position). Jumper J50 may be accessed with long-nose pliers or similar tool. Figure 16 shows the slot designations. Refer to Table 5 and Table 6. Figure 17 shows the rear panel for the DC power supply. The AC rear panel is shown in Figure 1. GDC 087R701-000-02 19
UNIVERSAL BacKPLANE EXT RING TB1 1 Slots 13-16 J19 Slots 7-12 J18 Slots 1-6 EXT -V BAT GND F GND RING GND BAT J17 J51 J49 J52 J 50 J22 J21 J20 J16 J15 J14 J13 J12 J11 J10 J9 J8 J7 J6 J5 J3 J2 J1 Zone 3 (DB-25 connector panel shown) Shelf Address Jumper Upper Lower Figure 16 Rear View of Single Shelf -48 V == JUMPER JUMPER 8 7 6 5 4 3 2 1 J49 B -V BATT A A +V BATT B OR -48 V == JUMPER JUMPER 8 7 6 5 4 3 2 1 B A A B -V BATT +V BATT "Spring-loaded" terminal strips may be found on later models. Push bat handle to the right and insert wires at the rear of the terminal strip. The silk screening nomenclature remains the same for both style connectors. General Datacomm, Inc. MODEL: MS-1 (E) S/N THIS ENCLOSURE CONTAINS FCC REGISTERED EQUIPMENT. SPECIFIC REGISTRATION INFORMATION IS CONTAINED ON INDIVIDUAL UNITS. CAUTION HIGH VOLTAGE DISCONNECT POWER BEFORE SERVICING Figure 17 DC Power Supply Rear Panel 20 GDC 087R701-000-02
Dual Shelves Adding dual (or expansion) shelves (see Figure 18) allows up to four power supplies and extra cards in the upper and lower shelves. A power supply may power either shelf. For example, if a dual shelf has three power supplies and any one power supply fails, the remaining two power supplies provide power for both shelves. Each shelf requires separate input power. To add an expansion shelf: Remove power from the shelf The expansion shelf should be placed below the original shelf with no intervening gap, to allow for inter-shelf cabling and must be linked using Bus Power Cable 024H607-001 (DC) or 024H607-002 (AC) between rear panel connectors J49 (observe proper keying). To prevent the possibility of the Bus Power Cable coming loose from J49, use tie wraps included in the Expansion Shelf package to secure both ends of the cable to holes in the side of the shelf. Set jumper J50 on the expansion shelf for a dual shelf configuration (lower position). Attach Bus Signal Cables - Use Bus Signal Cable 029H510-001 between J51 and J51 and Bus Signal Cable 029H509-001 between J52 and J52. Figure 18 illustrates the rear panel cable connections for a Dual(Expansion) Shelf. GDC 087R701-000-02 21
Main Shelf J52 J19 UNIVERSALBacKPLANE *Bus Signal Cable 029H510-001 (40-Pin) and 029H509-001 (30-Pin) J18 EXT RING EXT -V BAT GND F GND RING GND BAT J17 TB1 1 J51 J 50 AC/DC Power Supply J49 * Bus Power Cable 024H607-001 (DC) or 024H607-002 (AC) J22 J21 J20 J16 J15 J14 J13 J12 J11 J10 J9 J8 J7 J6 J5 J3 J2 J1 Secure Ends of Cable Assembly to Sides of Shelf With Tie Wraps J52 * Both Signal and Power Cables Are Keyed. Be sure to Orient Correctly Before Inserting Into Connectors. All 3 cables are required for Multiple- Shelf Installation. J19 J18 J17 TB1 1 J51 AC/DC Power Supply J49 J52 J 50 J22 J21 J20 J16 J15 J14 J13 J12 J11 J10 J9 J8 J7 J6 J5 J3 J2 J1 Expansion Shelf If ac shelves are used, the AC power cords MUST be connected to both main and expansion shelves at all times. To avoid interference with parts of the shelf, install rear panel 50-pin Telco cables from right to left on bottom row and from left to right on top row. Figure 18 Dual Shelf Rear Panel Cable Connections Grounding The chassis of the AC powered shelf or enclosure must be connected to protective (earth) ground for safety reasons. This is normally done via the power cord s ground wire, or optionally via a separate ground wire from a stud (chassis ground) located to the left of the power supplies on the rear panel. Figure 19 shows an optional ground connection on an AC or DC shelf using an anti-rotational lug or a ring lug terminal. Connections are made to the shelf frame by crimping a 10 or 12 AWG wire to one of the lugs in the terminal lug kit GDC Part No. 010K030-001 using Burndy Electric Co. Hytool Type Y1OD. Call Burndy customer service 1-800-346-4175 for tool order information. Attach the lug and wire to the left side plate of the shelf as shown in Figure 19 using the hardware supplied in the kit. Figure 21 describes alternate power supply grounding and ground strap connections. 22 GDC 087R701-000-02
. Phillips Gauge Phillips Gauge Figure 19 Shelf Frame Ground Connection EMI (Electromagnetic Interference) Zone 3 - Shielded cables minimize EMI and are required for Zone 3 I/O connections to meet the radiated EMI limits for FCC Part 15 Class A and EN55022 Class A. These shielded cables are connected to the and thus to local earth ground. This occasionally causes a problem if the equipment to which the shelf is connected is at a different ground potential than the shelf, and that equipment also grounds the cable shields to its earth ground. These shielded cables are connected to chassis ground via the two mounting screws on the connector hood. EMI Filtering - EMI filtering is done on power supply input wiring and sometimes on transmission lines of the plug-in cards on an individual basis. Figure 20 describes the frame grounding kit that must be used when attaching cables to Zone 1 of the 50-pin Universal Backplane. GDC 087R701-000-02 23
Important When 50-pin shielded cables are attached to the Universal Backplane connectors, be sure to use frame grounding kit (GDC Part No. 010K071-001) which include 3 sets of screws and clips (discard). See drawing below. Hex Standoff Backpanel Backpanel Connector Screw (one for each cable hood) Plug cable into backplane connector Tighten screw Wrap attaching band around cable hood to secure Attaching Band 50-pin cable Figure 20 50-Pin Attaching Cables Tying Signal Ground to Chassis Ground A large ground current can flow in the shield of a shielded cable if it is connected to ground at both ends, and the grounds at the two equipments are not at the same potential. To avoid large currents, make sure that a potential difference of less than 0.25 V RMS exists between the ground of the unit and the ground of the equipment to which it is connected. An alternative is to break the shield continuity in the middle of a long cable run or to connect the shield to ground at only one end. It is common practice to tie chassis ground and signal ground together. Signal ground is the 0V reference for the digital circuits in the unit and is also the reference for unbalanced data interfaces such as EIA/TIA-232-E and RS423. Tying these grounds together is usually best for AC power line noise immunity, but a problem can exist if signal grounds on two equipments (at different chassis ground potentials) are connected together via a data cable. A large current can flow in the signal ground lead (EIA/TIA-232-E pin 7). To prevent this, make sure the potential difference between grounds is less than 0.25 V RMS, or open the connection between chassis ground and signal ground on the unit. Alternatively, connect a 100 ohm 1 watt resistor between chassis ground and signal ground. This limits currents in signal ground leads and still maintains noise immunity benefits. The enclosure and shelf are shipped with the signal and chassis ground strapped closed at the two screw terminals located on the rear panels. Some local electrical codes and equipment manufacturers recommendations may require separation of signal and chassis ground. For these conditions, leave the strap open. In this case, a customerprovided wire should be connected to signal ground. Figure 21 and Figure 22 illustrates the AC and DC shelf ground connections. To open signal ground and chassis ground: 1. Loosen both ground post screws. 2. Slide the strap up, then rotate it one-half turn to prevent it from contacting the signal ground terminal. 3. Tighten both screws. 4. Connect a wire from earth ground to the signal ground terminal. To isolate signal ground from chassis ground: 24 GDC 087R701-000-02
1. Loosen both ground screw posts. 2. Slide the strap up, then rotate it one-half turn to prevent it from contacting the signal ground terminal. 3. Wrap one resistor lead one-half turn clockwise around the chassis ground screw and the other lead around the signal ground screw. 4. Tighten both screws. To common signal ground to chassis ground: 1. Loosen both ground post screws. 2. Slide or rotate the strap to make contact with both ground terminals. 3. Tighten both screws. 8 7 6 5 4 3 2 1 Single Station Battery Connection Signal ground commoned to chassis ground (factory default) Battery A + 8 7 6 5 4 3 2 1 Battery A + + Redundant Station Battery Connection Shelf Ground Connections Signal and Chassis grounds open Battery B Chassis ground connection to earth ground. Signal ground: This ground is connected to all plug-in cards and provides a common circuit reference point. -48 V == JUMPER JUMPER 8 7 6 5 4 3 2 1 J49 B -V BATT A A +V BATT B "A" Note: Spring-loaded terminal strips may be found on later models. Push bat handle to the right and insert wires at the rear of the terminal strip. The tightening torque for the screw-type terminal is 7.0 lb.-in. Stud on shelf to the left of power supply (AC or DC). Attach a wire from here to remote earth point. Alternative methods use the anti-rotational lug as shown in Figure 19, or the less preferred connection at point "A" General Datacomm, Inc. MODEL: MS-1 (E) S/N THIS ENCLOSURE CONTAINS FCC REGISTERED EQUIPMENT. SPECIFIC REGISTRATION INFORMATION IS CONTAINED ON INDIVIDUAL UNITS. CAUTION HIGH VOLTAGE DISCONNECT POWER BEFORE SERVICING Shelf Rear Panel Assembly (DC) Figure 21 Power Supply and Ground Strap Connections (DC power supply shown) GDC 087R701-000-02 25
120 Vac or 220 Vac Protective Ground IEC Connector -12V +12V +5V 0V GPS-13 or GPS-13E Power Supply Chassis Ground Zone 2 Strap Signal Ground Chassis Ground Earth Ground Point To Zone 3 DB-25 Pin 7 (via plug-in cards) To Zone 1 and Zone 3 Cable Shields 120 Vac or 220 Vac Protective Ground -48Vdc -48V Ret. Earth Ground AC Rear Panel DC Rear Panel Enclosure Ground Connections -12V +12V +5V 0V GPS-11 or GPS-11E or DPS-11 Power Supply Bus Power Cable Connector J49 Strap Zone 2 Signal Ground Chassis Ground Earth Ground Point To Zone 3 DB-25 Pin 7 (via plug-in cards) To Zone 1 and Zone 3 Cable Shields Shelf Ground Connections Figure 22 Ground Connections 26 GDC 087R701-000-02
Power Supply Installation DC-Powered Shelves The DC shelf uses one or two power supplies (DPS-11) that operate from one or (optionally) two - 48 Vdc station battery(s). The DC power supply is rated at 96 watts max. (+5 Vdc = 0-16A, ±12 Vdc = 0-1.67A). See Figure 23. The DC-powered shelves require customer provided station battery power. Use No. 16 to 12 AWG stranded, insulated copper wire for battery connections, sized to carry 3 amps at 48 V dc nominal per shelf. POWER ON FAIL POWER ON (I) OFF (O) DPS-11 POWER SUPPLY -48V --2.5A Figure 23 DC Shelf Power Supply Front Panel GDC 087R701-000-02 27
Noise Immunity - (Early DC Supplies) The revision level of the dc supply is found on a white label at the lower edge of the card. Supplies that don t need this modification are marked K- or above. In addition, some especially sensitive equipment operating environments may require the use of additional suppression of conducted emissions generated by the equipment, or may require enhanced immunity from susceptibility to noise present in that environment. Use of the ferrite toroid (235-001-002) will provide the additional suppression or immunity enhancement required when installed as shown in Figure 24. Figure 24 Noise Immunity Kit Each pair of DC battery input wires (-48V, -48VRET) must be wound 6 times around the ferrite toroid, before the wires are connected to the terminal block at the rear of the DC shelf. The 6 turns must be evenly distributed around the toroid as shown on the above drawing. The toroid must be located a maximum of 3 inches from the terminal block. For applications where separate A and B battery inputs are used, each pair of wires must be wound around a separate toroid. Important When you install only one power supply, for safety compliance, you MUST install a power supply blank front panel, P/N 010D727-001, to cover the unused slot. AC-Powered Shelves Sixteen slots are used for product cards and for a space reserved for up to two GPS-11 power supplies. A dual shelf configuration allows up to sixteen more product card slots and two more supplies. The AC shelf may use one or two power supplies GPS-11 (120 Vac) or GPS-11E (220 Vac) for non-redundant, or redundant use. The front panel is illustrated in Figure 25. The power supply is rated at 96 watts max. (+5 Vdc = 0-16A, ±12 Vdc = 0-1.67A). Important Power supplies for the AC shelves are modular units. If power supply removal is necessary, first disconnect the power cord from the shelf. 28 GDC 087R701-000-02
POWER ON FAIL POWER ON (I) OFF (O) GPS-11 POWER SUPPLY 100-120V~ 50-60Hz 2A GPS 11E POWER SUPPLY 220-240V- 50-60Hz 2A Figure 25 AC Shelf Power Supply Front Panels Each shelf power supply has a front panel green LED POWER ON indicator and a red LED FAIL indicator. A POWER ON switch is located on the front panel. The shelf power supply(s) is inserted from the front of the shelf and secured in place with one screw located on the front panel. Be sure to fully seat the power supply, and secure the front panel screw with a screwdriver. Power Cords Connect the line cord plug to a polarized grounded outlet providing the required AC power. Export line cords are optional. For part numbers refer to Table 7 - Equipment List. The AC outlet should be under switch control The unit should be powered by the same AC source as the equipment to which if it is connected, to prevent large circulating currents caused by differences in ground potential. If it is not possible to determine whether the equipment is powered by the same AC source, verify that a potential difference of less than 0.25 Vrms exits between the grounding circuits of the respective power outlets. Special line cords are provided for high noise environments. GDC 087R701-000-02 29
Important In a multiple-shelf system, you must provide primary power to each shelf and Fan Tray Assembly. The Bus Power Cable, links the power supply outputs together to provide the system s redundant load sharing features, but it does not carry primary power. Redundant Power Supplies You can power one or two shelves (adjacent) with two power supplies using the associated bus power cable. Each shelf is required to house at least one power supply. Additional power supplies need to be installed when redundancy is required. A redundant power supply system has at least one more installed power supply than is required for proper operation. If one power supply fails, the remaining power supplies can power the installed cards. The installed power supplies actively share current, dividing the total load among all functional supplies. This provides the benefit that both power supplies run cooler and therefore have a lower failure rate. Table 2 defines the number of power supplies required for various configurations. Table 2 Application Single Shelf Dual Shelf Shelf/Power Supply Configurations Description 1 supply (non-redundant), lowest cost 2 supplies (redundant, lower failure rate, more reliable) 2 supplies, one in each shelf (non-redundant, lowest cost) 3 supplies, 2 in one shelf 1 in another (redundant, lower failure rate, more reliable) 4 supplies, two in each shelf (redundant, lower failure rate, most reliable) Inserting Power Supplies Check the total of individual product card Load Numbers GPS-11/13 and DPS-11/13 4. Verify that you are installing the correct type power supply; that is a DC power supply (DPS) or an AC power supply (GPS). 5. Turn off the power supply 6. Remove the filler panel and insert the power supply slowly into its slot with the GDC logo on top, then slide it in until it makes contact 7. Tighten the front panel screw to press the front panel firmly against the shelf frame and seat the supply. 8. Turn on the power supply and check LED status To remove a power supply: 1. Turn off the power supply 2. Wait 60 seconds, then loosen the front panel screw to unseat the power supply, then pull on the screw. 30 GDC 087R701-000-02
Enclosure Power Supplies The MultiPak Enclosure uses a GPS-13 (100/120 Vac) or GPS-13E (220/240 Vac) power supply for non-redundant use only. The front panel is illustrated in Figure 26. General Datacomm POWER ON GPS 13 POWER SUPPLY 100-120V~50-60Hz 4 Amps GPS-13 GPS 13E POWER SUPPLY 220-240V~50-60Hz 2 Amps GPS-13E Figure 26 Enclosure Front Panel The power supply is rated at 100 watts total (+5 Vdc = 0-20A, ±12 Vdc = 0-1.0A). The enclosure power supply has a front panel green LED POWER ON indicator. The POWER ON switch is located on the rear panel of the supply. If the power supply fails, there is no power. The enclosure's power supply is installed from the front of the enclosure and secured by two screws at the rear of the enclosure. Important Power supplies for the enclosure are modular units. If power supply removal is necessary, first disconnect the power cord from the enclosure. Power Cord The enclosure is equipped with an IEC-type North American ac power cord. (Export AC power cords are optional). Connect the line cord plug to a polarized grounded outlet providing the required ac power. 1. The AC outlet should not be under switch control. 2. The unit should be powered by the same ac source as the equipment to which it is connected, to prevent large circulating currents caused by differences in ground potential. If it is not possible to determine whether the equipment is powered by the same AC source, verify that a potential difference of less than 0.25 Vrms exists between the grounding circuits of the respective power outlets. GDC 087R701-000-02 31
Trouble-Shooting In a redundant system, the front panel FAIL indicator lights when the power supply shuts down due to an overload or when there is an absence of input voltage, including an absence caused by turning off the POWER ON switch. If a power supply shuts down due to an overload, turn off the power supply, wait one minute, then turn it on. If the power supply shuts down again, the power supply, a backplane or a plug-in card is defective. Fuse Replacement Figure 27 illustrates the location of fuse F1 for the DPS-11 power supply, and Figure 28 illustrates the location of fuse F1 for the GPS-11 and GPS-11E power supplies. When replacing the fuse, be sure to use the correct type (fuse information is printed on the pc card, near the fuse holder). F1 7A FB 250V Figure 27 DPS-11 Power Supply Fuse Location 32 GDC 087R701-000-02
VOLTAGE FUSE TYPE 100-120V` T2.5A 3AG 200-14V~ T1.5A 5X20MM F1 Fuse holder Figure 28 GPS-11/GPS-11E Power Supply Fuse Location GDC 087R701-000-02 33
Alarm Card Figure 29 shows the optional Alarm Card and explains the function of the front panel indicators and switch. You may check the operation of each unit by monitoring the indicators. The colors of the LED indicators on the modules front panels are consistent in function: Red and yellow are used for alarms or "service-affecting" conditions. This includes test modes that are interfering with normal user data. Alarm conditions depend on the product cards, but normally, red indicates a Major Alarm (a number of problems), and yellow indicates a Minor Alarm (channel alarms). The green LED indicators are used for all other conditions. ON Green LED is on when power is supplied to the Alarm Card. AUDIBLE Green LED is on when front panel ACO switch is on. MIN Yellow LED is on when a minor alarm is active. MAJ Red LED is on when a major alarm is active. AUDIBLE ACO This 3-position switch has the following functions: ENBL - Permanently on. Major or minor alarms do not activate the audible alarm. DSBL - Permanently off. All major or minor alarms activate the audible alarm. RESET - Momentary on. The first alarm does not activate the alarm relay. When the first alarm is de-activated, the ACO circuit is reset to ACO "OFF" allowing the next alarm to activate the audible alarm relay. ON MIN AUDIBLE ENBL DSBL RESET MAJ AUDIBLE ACO ALARM 1 Figure 29 Alarm Card The alarm function is accomplished using the plug-in Alarm Card along with the existing shelf or enclosure alarm bus, and the associated product cards. Provides contacts to activate local and remote customer alarm systems Provides local and remote indication of alarms in a system Provides separate cutoff controls for local and remote systems Typically, the alarm outputs are used to drive the visual and audible alarms within a central office. There are four types of alarms: Major, Minor, Power Good (Major), and power status (Minor). 34 GDC 087R701-000-02
Major and Minor alarms are defined depending on the card(s) used in the system. When an alarm is detected, the associated card activates circuitry on the Alarm Card. To assure that transient signals do not trigger the alarm, there is a built-in time delay of approximately 100 ms. When an alarm exists, front panel LED indicators light, providing a local indication (minimum on-time of approximately 0.75 seconds). At the same time internal relays are activated, providing external control of visual and/or audible indications. You may make Major, Minor and Audible Alarm connections by wire wrapping to connectors on the Alarm Interface Adapter Card, GDC Part No. 048P068-001. Table 3 describes the pinouts. Table 3 Alarm Card Pinouts E13 E25 13 25 E1 E14 1 14 Zone 3 Shelf/Enclosure DB25 Pin No. Alarm Adapter Card (wire-wrap pin No.) Major Alarm Common 1 E1 Normally Open 2 E2 Normally Closed 3 E3 Minor Alarm Common 7 E7 Normally Open 8 E8 Normally Closed 9 E9 Audible Normally Closed 20 E20 Normally Open 21 E21 Common 22 E22 Wire-wrap pins - press fit,.045 sq., Auto-Splice 8-452 F52240 Contact closures are shown in power-up condition (No Alarm) The Alarm Card receives power when you insert it into the shelf or the enclosure. Inserting or extracting it does not cause any errors in the system. The Alarm Interface Adapter mounts on the rear of the shelf or enclosure at Zone 3 at the position assigned to the Alarm Card slot. An Alarm Card power failure sets all alarms except the Audible Alarm. To deactivate the alarms, extract the Alarm Card from the shelf or enclosure. Use the ACO front panel switch to cut off the external audible alarms; the front panel alarm indicators remain ON. Note 1.When inserting an Alarm Card into a powered shelf or enclosure, Major, Minor and Audible Alarms go ON for approximately 0.75 seconds then OFF. 2.When applying power to a shelf or enclosure, the Major, Minor, and Audible Alarms go ON for approximately 0.75 seconds then OFF. GDC 087R701-000-02 35