WCDMA RAN Systems and Site Introduction. RBS components. WCDMA RBS Maintenance. 2. Customer Product Information (CPI) and. TXO Systems has the ERICSSON RBS RRUS 12 B3 in stock, along with a wide range of used and refurbished telecommunications equipment from all. Ericsson shall have no liability for any error or damage of any kind resulting from The support system for the RBS main unit is available in two variants.
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ERICSSON – RBS RRUS 12 B3 – TXO Systems
No part of this document may be reproduced in any form without the written permission of the copyright owner. Disclaimer The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Ericsson shall have no liability for any error or damage of any kind resulting from the use of this document. Trademark List All trademarks mentioned herein are the property of their respective owners.
These are shown in the document Trademark Information. This document describes how to install the RBS on site and how to connect it to external interfaces. Other documents containing installation instructions are: The instructions in this document describe the installation of the following hardware: The eircsson system ericssno the RBS main unit is available in two variants: Information related to a specific variant is included when necessary.
Screws required to install the main unit in the rack are not included. Figure 1 shows the work process for erivsson the RBS.
Always use an approved ESD wrist strap when working with eircsson equipment. Damage to components mounted on printed board assemblies can occur if an ESD wrist strap is not used. The main unit must be unpacked 661 its transport package in an environment identical to its operating environment. The maximum main unit weight is 10 kg. To unpack and check the materials, do the following: Examine the packaging for damage. If it has been damaged, make an immediate complaint to the transport company.
Put on the ESD wrist strap, and connect it to a suitable unpainted ground in the rack. Check that the items delivered correspond to the packing list. More information can be found in Site Installation Documentation. Unpack the main unit.
Handle the main unit with care when laying it down and place ericssn protective board under it to avoid scratching its surface. If you are installing edicsson front cover with the main unit, see Section 6. Information about on-site space requirements can be found in RBS Description and in the manual for the rack.
The fan module can be replaced in a live node. If the fans are inaccessible from the back of the rack, the replacement of the fans requires that the main unit is removed from the rack.
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Therefore, install the main unit at a convenient working height and route all cables with necessary extra length to allow the removal of the main unit without disconnecting the cables. To prepare for an expansion with a secondary support system, reserve space close to this main unit. To install the main unit in a inch rack: Place the main unit in the rack.
Tighten the rack screws at the brackets according to the rack supplier’s specification. The front cover is only applicable with the support system variant 2. This section describes the procedure for installing the main unit when a front cover is used. Check if the main unit has the standard brackets installed for inch rack.
If so, remove the standard brackets and install the brackets that are supplied with the front cover. The front cover brackets come in three different sizes depending on the position of the main unit in the rack. The length of the front cover is mm and the protrusion is either mm, mm, or mm from the rack. Install the railings on the main unit and tighten the M4 screws in the brackets to a torque of 1.
Place the main unit in the rack and tighten the rack screws on the brackets according to the rack supplier’s specification.
A Prolonged screwdriver is needed to reach the screws. Route the cables to the main unit using the rail openings and connect them according to rricsson cabling instructions. Place the front cover on the railings and push the front cover until it snaps in its place. Exhaust air from the rear may not be allowed to circulate to the front air intake in the rack. If the rack is equipped with 660 door, the door must not block the necessary cooling air.
Therefore, a minimum free space of 50 mm in front of, and 50 mm behind the main unit is required. To adjust the main unit using standard brackets: Check if the rack is placed against a wall or if the rack has a rear wall. If so, measure the distance from the rear of the main unit to the rear rack wall. If the distance is less than 50 ericsosn, the brackets must be adjusted, see Step 2.
If the rack is equipped with a door, measure the distance between the front of the eicsson unit and the door. A minimum free space of 50 mm in front of the main unit is required for cables and air intake. Place the brackets in the proper position: Tighten the M4 screws in the brackets to a torque of 1.
To adjust the main unit using front cover brackets: The fans in both support systems are controlled by the primary DU. Each support system provides power to its hosted DU.
This includes connections to the support systems’ built-in external alarm interface and to an optional Ericsdon Alarm Unit SAU.
Follow the instructions in Section 6 on page 13 when installing the two support systems in the rack. It is recommended to place the two support systems on top of each other. The cable connecting the two support systems is 1 m long to allow the removal of the support systems from the rack for service purposes without disconnecting the cables. To complete the main unit cabling: Connect the longer Enclosure Control EC bus cable as follows: Support system variant 2 supports all DUW versions.
Instructions on how to connect the cables can be found in Non-RF Connections. A DBA is placed in the same inch rack that the main unit is placed in, or in another rack. Products not connected to ground risk being damaged by overvoltage or overcurrent.
Always connect products to ground according to instructions. To connect the grounding cable to the RBS: Remove the grounding screw and washers using a 13 mm socket. Connect the protective grounding cable from the distribution central. Reinsert and tighten the hexagon screw to a torque of 15 Nm using a torque wrench and a 13 mm socket. Take care not to damage the front when handling the main unit.
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Figure 3 shows the grounding for the support system variant 1, and Figure 4 for the support system variant 2. Strip off 12 mm of each wire using the cable shield cutter. Make sure that cables with recommended cross sectional area are used. Insert the power cable wires into each dedicated tension clamp connection and check that they are properly fastened. Table 2 lists the cross sectional area requirements for variant 2 power cables.
The following figure shows the procedure for making a V DC power connector. Do not install or ericsskn AC or DC powered equipment unless you are a qualified and authorized electrician.
Improper installation work can seriously 601 the equipment. Make sure that the DC power supply cable has enough extra length to allow the removal of the main unit from the rack for service purposes without disconnecting the cable. The DC power supply must be equipped with an external fuse or circuit breaker.
If the node configuration is a dual support system configuration, each support system requires a separate DC in cable and fuse.
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More information can be found in RBS Description. To connect the DC power supply to the main unit: Make sure that the external DC power is switched off before connecting the cables. Switch off or disconnect any external battery back-up.
Connect the DC power cable to the power supply terminals. Carefully observe the polarity of the cable installation. Connect the DC power cable to the main unit and ericsson it into place.
The following figure shows how to connect the V DC power cable for support system variant 1: The TCU is installed in the slot 2 in the main unit. See Figure 5, letter B. The DU must be placed in slot 1 and connected to the support system, since the TCU does not control or supervise the support system. Slot 2 is the upper position in the main unit.