USING THE EPDUEATON Managed ePDU User’s Guide 164201xxx Rev 1 DRAFT 10−OCT−200820Back PanelThe back panel of the 1U and 2U ePDUs consist of, from left to right, a power cord,power outlets to connect devices to the ePDU, and a display panel. Zero−U models donot have a back panel.Power CordThe power cord that connects the ePDU to a power source is located on the far left ofthe back panel, or on the end of the ePDU if the ePDU is a 0U model. All devices arenon−rewireable by the user.NOTE Each ePDU should be plugged into an appropriately rated outlet for its type.There is no power switch on the ePDU. On models rated at over 20A, there arebranch circuit breakers that are fully shrouded to prevent accidental operation. Topower cycle the ePDU, remove the power cord from the power source and thenre−connect it.OutletsThe number of outlets on the back panel depends upon the ePDU model. To theupper left of each outlet is a small LED. The ePDUs are shipped from the factory withall outlets powered ON.Table 2 explains how to interpret the different LED states.Table 2. LED StatusLED State Outlet Status What it MeansNot lit ePDU OFF The outlet is not connected to power or the control circuitry’spower supply is broken.Red ON and LIVE The outlet is ON (relay closed) and LIVE (voltage present).Red flashing ON and LIVE The outlet is ON and LIVE, but there is overload and thecurrent has crossed the non−critical threshold.Green OFF and LIVE The outlet is OFF (relay open) and the ePDU is LIVE.Green flashing OFF and NOT LIVE The outlet is OFF and the supply is not present.Yellow flashing ON and NOT LIVE The outlet is ON but NOT LIVE (circuit breaker open or otherhigh voltage rail error).Cycling throughRed, Green andYellow Indicates one of two possibilities: The ePDU has just been plugged in and its managementsoftware is loading. A firmware upgrade is being performed on the ePDUNOTE When a ePDUis powered on, the power−on self−test and software loading takes a few moments. Asthe ePDU boots up, the outlet LEDs cycle through red, green and yellow. When the software has completedloading, the outlet LEDs displays a steady color and the meter illuminates.
