H3C MSR 50-40 Installation Manual

Also see for MSR 50-40: User manual

Contents

H3C MSR 50-40 Installation Manual Manual pdf 21 page image

13PSUFunctionsThe power supply system of the MSR 50 can work in either single-power or dual-power mode. Indual-power mode, the two PSUs (DC-input or AC-input) function in redundancy backup mode. Thatmeans, when a PSU fails or its power supply is disconnected, another PSU can still work and supply allthe power required by the system.You can connect a PSU to the backplane by inserting it from the rear of the router chassis. It is hotswappable and its switchover does not affect the ongoing system operation.NOTE:• When installing your router in a communications equipment room, ensure that the AC powerdistribution cabinet can provide a lightning protection box or arrester against the current of 20 KA andabove.• MPU-G2 does not support any PoE power module.AppearanceFigure 13 AC-input PSUFigure 14 DC-input PSULEDTable 10 PSU LED descriptionLED MeaningALM (red) ON means the PSU is not well-seated or has failed.RUN (green) Steady ON means the PSU is operating normally, and OFF means the PSU has failed.AC/DC OK (green) PSU input LED. Steady ON means the normal voltage is inputting, and OFF means theopposite.FAN ModuleFunctionsThe MSR 50-40 is configured with six fans; the MSR 50-60 is configured with eight fans. These fans areworking in pairs and the two fans in each pair are working in redundancy. When all these fans areworking normally, the operating temperature of the system can be maintained between 0°C and 55°C(32°F to 131°F). As the failure of a fan does not affect the operation of other fans, the normal operating