Dell Force10 S50N Series Installing Manual

Also see for Force10 S50N Series: Configuration guide Quick start guide Implementation guide

Contents

34 | Installing Backup Powerw w w . d e l l . c o m | s u p p o r t . d e l l . c o mInstalling the Backup DC Power Supply for the S50NThe Redundant Power Supply Unit (PSU) for the S50N is a 180W AC/DC rectifier. It is less powerfulthan the S50V PSU, because it does not need to support PoE.This 180W PSU is the same as used for the S50, so it can be housed in the External Power Shelf suppliedfor the S50. It does not have screw holes for rack ears, so it cannot be hung in a rack by itself.CAUTION: Use only the power cords supplied with the power supply. Do not supply power to the system untilthe power supply and modules have been installed.DC Components• The External Power Shelf (EPS) (Catalog# SA-01-EPS)• S50/S50N Power Supply Unit (PSU) (Catalog# SA-01-PSU), an external AC-to-DC rectifier• PSU mounting hardware: captive screws for attaching the unit to the External Power Shelf (EPS)2 Insert the plastic plug of the DC-to-DC cable into the receptacle on the lower left side of the DC Power Module(DPM), which is the bottom box in Figure 5-9.Note that one of the three leads on the plug has a trapezoidal key , which goes in the receptacle that is towardthe center of the PSU. The key is not strong enough to resist being inserted in the opposite receptacle, and it isdifficult to see, so you must take care to insert it correctly. To help you orient it, note that the top side of the plughas a knurled pattern.Figure 5-9. DC-to-DC Connection3 Tighten the captive screws on the sides of the connector cable by turning them clockwise.4 Insert the supplied AC-to-AC cable into the AC receptacle of the DC power supply. Ideally, you should connectthat cable to an AC source separate from the AC connection made directly to the S50V.Step TaskDC-to-DC Cablefn00153s50VDC Power Module11.5FG -48VRTN -48VCurrentSharingS50V