The information in this document is the property of Ericsson. RBS œ Indoor Macro Base Station. RBS œ Typical Deployment Scenarios. The OMS and OMS can be integrated into RBS and RBS Product Overview The RBS , a member of the RBS family, is an outdoor RBS. The RBS consists of an outdoor cabinet with either. Ericsson shall have no liability for any error or damage of any kind resulting from Variants The following variants are available: • RBS with a heater.
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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.
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These are shown in the document Trademark Information. It has a total cooling capacity of 2. The extended climate system supports up to 12 RUs. No extra SCU, temperature sensor, or heater is required for the extended climate solution.
Any unit that is able to send temperature information has the ability to affect the fan speed. Figure 3 shows the climate system block diagram.
Controlled eriscson The controlled mode is the standard runtime mode. In the controlled mode, the Main Processor MP controls the fans.
Examples of this are during cold startup and unplanned MP downtime. The air is then forced through the exterior part of the heat exchanger and expelled through the upper rear of the cabinet. The rhs fans maintain a cooling airflow inside the cabinet by forcing internal air through the interior part of the heat exchanger, connected to the exterior part that is cooled by the exterior airflow, and then expelling it through the front openings of the climate system back into the cabinet.
An optical indicator on the front panel of the SCU will also be activated.
Because the exterior part of the heat exchanger is supplied with ambient air, the internal temperature is limited by the temperature of the air outside the RBS. The SCU will maximize output from the heater by running the fans at different speeds if the temperature continues to decrease after activation of the heater. The DC heater is equipped with a second heating circuit which is also activated at this second stage.
The SCU will perform the following steps in order should the temperature sensor measure temperatures in the cabinet below the threshold until the temperature starts to increase: The SCU runs the internal fans at different speeds.
The SCU activates the heater. The SCU adjusts fan speeds to maximize heater effect. The SCU will perform the steps in reverse order as the temperature starts to increase.
The internal and the external fans will speed up in parallel to counter the increasing internal temperature. The fan speed will automatically decrease as the demand for the cooling declines.
The exact behavior and thresholds are dependant on the RBS configuration. Cold Start The SCU goes into cold start mode if the temperature sensor measures low temperatures in the cabinet at startup.
The heater is then activated and the internal fans run at different speeds to maximize heating. When the temperature within the cabinet is acceptable, a signal is sent to the power system to supply DC power to all units in the cabinet. The heater is deactivated and all the internal fans maintain a constant speed.
Hot Start The SCU goes into hot start mode if the temperature sensor measures high temperatures in the cabinet at startup. Every fan increases its speed to cool down the cabinet. When the temperature in the cabinet is acceptable, a signal is sent to the power system to supply DC power to all units in the cabinet.
Ericsson Manual RBS
An external temperature sensor is connected to the SCU that controls the heater. There are two variants of heaters: The AC-fed heater is suggested for standard use. The DC-fed variant should be used for a DC-supplied RBS and when there are requirements for equal phase load or minimization of the feeding fuse size. It is fastened with screws on the surface inside the cabinet and connected to the SCU.
Information on the optical indicators can be found in Interpreting Optical Indicators. Information on the internal cabling can be found in Non-RF Connections. Remember me on this computer. Enter the email address you signed up with and we’ll email you a reset link.
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