Dell K812N - Manuals

6 | Introduction Introduction The Dell t Online Rack uninterruptible power system (UPS) protects your sensitive electronic equipment from basic power problems such as power failures, power sags, power surges, brownouts, andline noise. Power outages can occur when you least expect them and power qual...

7 Introduction | Providing outstanding performance and reliability, the UPS's unique benefits include: S Online UPS design with pure sine wave output. S True online double-conversion technology with high power density, utility frequencyindependence, and generator compatibility. S Buck and Boost volt...

8 | Introduction Finding Information CAUTION: The Safety, Environmental, and Regulatory Information document provides important safety and regulatory information. What are You Looking For? Find It Here S The user's guide for my UPS S The user's guide for the Dell Network ManagementCard S Dell UPS Ma...

9 Safety Warnings | Safety Warnings CAUTION: Before performing the procedures in this document, read and follow the safety instructions and important regulatory information in your Safety, Environmental, and Regulatory Information document. IMPORTANT SAFETY INSTRUCTIONSSAVE THESE INSTRUCTIONS This m...

10 | Safety Warnings CAUTION: Observe the following instructions to help prevent a potentially hazardous situation which, if not avoided, may result in minor or moderate injury or in property damage incidents: S Servicing of batteries should be performed or supervised by personnel knowledgeable abou...

11 Safety Warnings | S Do not overload the AC power supply branch circuit that provides power to the rack. S Do not stand or step on any components in the rack. WARNING: Slide/rail mounted equipment is not to be used as a shelf or work space. Do not add weight to slide/rail mounted equipment.

12 | Installation Installation This chapter explains: S Equipment inspection S Unpacking the cabinet S UPS rear panels S UPS setup and installation, including the External Battery Module (EBM) S Remote Emergency Power-off (REPO) installation S Initial startup Inspecting the Equipment If any equipmen...

13 Installation | Unpacking the Cabinet CAUTION: Unpacking the cabinet in a low-temperature environment may cause condensation to occur in and on the cabinet. Do not install the cabinet until the inside and outside of the cabinet are absolutely dry (hazardof electric shock). CAUTION: The cabinet is ...

15 Installation | UPS Rear Panels This section shows the rear panels of the Dell Online Rack models. UPSCommunicationBay Input TerminalBlock USB Port Four IEC 320-C19 Receptacles(Load Segment 1) REPOPorts RS-232Port Two NEMA L6-30R Receptacles (Load Segment 2) EBM Connector Output Circuit Breaker Gr...

16 | Installation UPS Front Panel This section shows the front panel of the Dell Online Rack UPS. On/Off Button LCD Panel Scroll Button (Down or Forward) Select Button Scroll Button (Up or Back) Figure 6. The Dell Online Rack UPS Front Panel

17 Installation | Rackmount Setup CAUTION: The cabinet is heavy (see page 62): 1) Dell strongly recommends to remove the battery tray from the UPS before lifting. 2) Lifting the cabinets into the rack requires a minimum of two people. CAUTION: Removing the batteries should be performed or supervised...

18 | Installation Pull the battery trays out using the plastic tabs and remove the battery trays (see Figure 8). Figure 8. Removing the Battery Trays 2 If installing additional UPSs, repeat Step 1 for each cabinet. NOTE: The following instructions are the same for square-hole racks and unthreaded, r...

19 Installation | 5 Attach the rails to the rack: Engage the back end of the rail until it fully seats on the vertical rack flange and the hook latchlocks in place (see Figure 9). Pull the rail just past the front of the rack. Push the front end of the rail until it fully seats on the vertical rack ...

22 | Installation 9 Replace the battery retaining bracket (see Figure 13). 10 Tighten the thumbscrew. NOTE: A small amount of arcing may occur when connecting the batteries. This is normal and does not damage the unit or present any safety concern. 11 Connect each internal battery connectors and att...

24 | Installation Installing the EBM NOTE: A small amount of arcing may occur when connecting an EBM to the UPS. This is normal and will not harm personnel. Insert the EBM cable into the UPS battery connector quickly and firmly. To install the optional EBM: 1 Plug the EBM cable into the UPS battery ...

25 Installation | 5 Make any necessary provisions for cord retention and strain relief. NOTE: Verify that the total equipment ratings do not exceed the UPS capacity to prevent an overload alarm. Installing Remote Emergency Power-off REPO is used to shut down the UPS from a distance. For example, thi...

27 Installation | Continue for each UPS. On the last UPS in the daisy-chain, connect a REPO connector (without ajumper) in the REPO port labeled “OUT.” 7 Verify that the externally-connected REPO switch is not activated to enable power to the UPSoutput receptacles. 8 For hardwired models, continue t...

28 | Installation AC Mains Wall 2-Pole Breaker UPS Line Neutral/L2 Figure 17. Circuit Breaker Diagram To hardwire the UPS input: 1 Switch off utility power at the distribution point where the UPS will be connected. Be absolutelysure there is no power. 2 Remove the terminal block cover (four screws) ...

30 | Installation 6 Connect the input and ground wires to the terminal block according to Figure 20 and Table 2. Terminal Position 1 2 3 Figure 20. UPS Input Terminal Block Table 2. UPS Wiring Specifications Wire Function Terminal Position UPS Wire Function Terminal Wire Size Rating* Tightening Torq...

31 Installation | UPS Initial Startup To start up the UPS: 1 Verify that the internal batteries are connected. 2 If an optional EBM is installed, verify that the EBM is connected to the UPS. 3 Verify that all load segment circuit breakers are in the ON position. 4 Switch the main utility breaker on....

32 | Operation Operation This chapter contains information on how to use the UPS, including: S UPS startup and shutdown S Control panel and display functions S Retrieving the Event Log S Transferring the UPS Between Modes S Behavior on overload S Configuring load segments, battery settings, and auto...

33 Operation | 4 On the control panel, press the button to check for active alarms or notices. Resolve any activealarms before continuing. See “Troubleshooting” on page 66. If there are no active alarms, a “No Active Alarms” message appears. 5 Verify that the Normal mode icon appears on the UPS stat...

34 | Operation Control Panel Functions The UPS has a three-button graphical LCD with dual color backlight. Standard backlight is used tolight up the display with white text and a blue background. When the UPS has a critical alarm, thebacklight changes the text to dark amber and the background to amb...

35 Operation | To select an option: 1 When scrolling through the settings, the present setting displays for each selection. 2 Press and release the button to select the option. The current setting for the option flashes when selected. 3 Use the or buttons to toggle the available options. 4 Set the n...

36 | Operation Screen Locked To lock a screen, press the button. The current view stays locked and does not automatically return to the default screen after time-out. When the screen is locked, the image of a key appears on the UPSstatus summary screen just to the left of the status icon. See Figure...

39 Operation | Table 5. Battery Status Screens Battery Status Screen Description Battery charging Batteries are charged in constant current mode. Battery floating Batteries are charged in constant voltage mode. Battery resting Batteries are connected but are not being charged or discharged. (This is...

40 | Operation Measurements The measurements screens provide useful measurement information on: S Output watts VA, current, power factor, voltage, and frequency S Input voltage and frequency S Battery voltage and percentage charged S Instantaneous Headroom Watts remaining S Peak Headroom Watts (the ...

41 Operation | Control Screens Table 6 describes the available control screens. Table 6. Control Screens Control Screens Description Go to Bypass Transfers the UPS system to internal Bypass mode. When the Go to Bypass command is issued, the screen immediately shows themessage for five seconds: Manua...

42 | Operation Identification The identification screens display the following UPS information: S Type and model S Part number S Serial number S UPS firmware S Comm firmware S Network Management Card firmware NOTE: The NMC firmware screen displays only if the Network Management Card is installed. Se...

47 Operation | Transferring the UPS Between Modes Transferring between modes includes: S Transferring from Normal to Bypass mode S Transferring from Bypass to Normal mode Transferring from Normal to Bypass Mode To transfer from Normal to Bypass mode: 1 Press the button for longer than one second to ...

48 | Operation Behavior on Overload See Table 8 for an explanation of how the UPS responds to an overload condition. Table 8. Behavior on Overload OverloadSeverity Load Level On Utility Power On Bypass On Battery Level 1 100% to 101% Overload alarm andsupports loadindefinitely Overload alarmand supp...

49 Operation | Configuring Load Segments Load segments are sets of receptacles that can be controlled by the Dell UPS Management Software,the Dell Network Management Card, or through the LCD display, providing an orderly shutdown andstartup of your equipment. For example, during a power outage, you ...

50 | Operation Configuring Automatic Start Delay You can configure a load segment to turn on automatically after the utility power returns, if it was shutdown by: S The button S An external command with auto-restart option S Battery under voltage state S Automatic on battery shutdown command You can...

51 Operation | Configuring Automatic on Battery Shutdown If set to Off (default), the load segment turns off only when commanded manually by the button, an external command, or through the display (Control > Load Segments). If set to zero seconds (0s), the load segment turns off automatically whe...

52 | Operation Configuring Battery Settings Configure the UPS settings for an installed EBM, including whether to run automatic battery tests andautomatic restart configuration. Configuring the UPS for an EBM If the UPS is not configured for the EBM, the UPS reports less battery time remaining on th...

53 Operation | Running Automatic Battery Tests The automatic discharge test, enabled by default, runs during the transition from Float to Rest mode.After the test completes, the charge cycle restarts to completely charge the batteries and then continuesto Rest mode normally. The automatic test runs ...

54 | Additional UPS Features Additional UPS Features This chapter describes: S Communication ports (RS-232 and USB) S Dell Network Management Card S Dell UPS Management Software RS-232 and USB Communication Ports To establish communication between the UPS and a computer, connect your computer to one...

56 | Additional UPS Features Dell Network Management Card (Optional) The Dell Online Rack UPS has one available communication bay, which supports the optional DellNetwork Management Card. See Figure 24 for the location of the communication bay. It is not necessary to shut down the UPS before install...

57 Additional UPS Features | Dell UPS Management Software Each Dell Online Rack UPS ships with Dell UPS Management Software. Dell UPS Management Software provides up-to-date graphics of UPS power and system data and powerflow. It also gives you a complete record of critical power events, and it noti...

58 | UPS Maintenance UPS Maintenance This chapter explains how to: S Care for the UPS and batteries S Transport the UPS S Store the UPS and batteries S Test the batteries S Update the UPS firmware UPS and Battery Care For the best preventive maintenance, keep the area around the UPS clean and dust‐f...

60 | UPS Maintenance 5 Replace the UPS front cover (see Figure 27). Figure 27. Replacing the UPS Front Cover Storing the UPS and Batteries If you store the UPS for a long period, recharge the battery every 6 months by connecting the UPS toutility power. The batteries charge to 90% capacity in approx...

61 UPS Maintenance | Testing Batteries For a battery test to run: S The batteries must be fully charged. S The UPS must be in Normal mode with no active alarms. S The load must be higher than 10%. To test batteries: 1 Connect the UPS to utility power for at least 48 hours to charge the batteries. 2 ...

66 | Troubleshooting Troubleshooting The Dell Online Rack UPS is designed for durable, automatic operation and issues alarms to alert youwhenever potential operating problems occur. Usually the alarms shown by the control panel do notmean that the output power is affected. Instead, they are preventi...

67 Troubleshooting | Event Log Menu From the Event Log menu, you can access the last 50 events, which includes events, notices, andalarms, arranged from newest to oldest. Events, notices, and alarms are logged in the Event Log whenthey occur and, if applicable, when they were cleared as follows: S E...

72 | Troubleshooting Table 16. Typical Alarms and Conditions (continued) Alarm or Condition Action Possible Cause Inverter Fault (Alarm 31) Continuous Alarm The UPS has detected a fault inthe inverter circuit whileattempting a recovery fromBypass mode or Convertermode. Contact your service represent...