Dell H955N User Manual

Dell H955N User Manual

Line-interactive rack ups 5600w
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Dellt Line-Interactive Rack UPS
User's Guide
H955N, J731N
w w w . d e l l . c o m | s u p p o r t . d e l l . c o m


Table of Contents

Summary of Contents for Dell H955N

  • Page 1 Dellt Line-Interactive Rack UPS 5600W User's Guide H955N, J731N K812N w w w . d e l l . c o m | s u p p o r t . d e l l . c o m...
  • Page 2 Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden. Trademarks used in this text: Dell and the DELL logo are trademarks of Dell Inc.; Greenlee is a registered trademark of Greenlee Textron; National Electrical Code and NEC are registered trademarks of National Fire Protection Association, Inc.; Phillips is a registered trademark of Phillips Screw Company.
  • Page 3: Table Of Contents

    Table of Contents Introduction Finding Information ..........Safety Warnings Installation Inspecting the Equipment...
  • Page 4 ....... . Dell Network Management Card (Optional) ......
  • Page 5 UPS Maintenance UPS and Battery Care ..........Transporting the UPS .
  • Page 6: Introduction

    — causing hours of lost productivity and expensive repairs. With the Dell Line-Interactive Rack UPS, you can safely eliminate the effects of power disturbances and guard the integrity of your equipment. The UPS's flexibility to handle an array of network devices makes it the perfect choice to protect your LANs, servers, workstations, and other electrical equipment.
  • Page 7 S Optional Dell Network Management Card with enhanced communication capabilities for increased power protection and control. S Advanced power management with the Dell UPS Management Software for graceful shutdowns and power monitoring. S Sequential shutdown and load management through separate receptacle groups called load segments.
  • Page 8: Finding Information

    S Specifications Dell UPS User's Guide S How to configure UPS settings The user's guide is available on the Dell UPS disc and on S How to troubleshoot and solve problems S How to install REPO control...
  • Page 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 INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions that you should follow during installation and maintenance of the UPS and batteries.
  • Page 10 S Your rack kit has been approved only for the rack cabinet provided. It is your responsibility to ensure that installation of the equipment into any other rack complies with all applicable standards. Dell disclaims all liability and warranties with respect to combinations of equipment with any other rack.
  • Page 11 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. Safety Warnings...
  • Page 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 equipment has been damaged during shipment, keep the shipping cartons and packing materials for the carrier or place of purchase and file a claim for shipping damage.
  • Page 13: Unpacking The Cabinet

    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 (hazard of electric shock). CAUTION: The cabinet is heavy (see page 60).
  • Page 14 CAUTION: The cabinet is heavy (see page 60). Lifting the cabinets into the rack requires a minimum of two people. With one person on each side, carefully lift the cabinet out of the outer carton using the handles on the cardboard and set it on a flat, stable surface (see Figure 3). Place the cabinet in a protected area that has adequate airflow and is free of humidity, flammable gas, and corrosion.
  • Page 15: Ups Rear Panels

    UPS Rear Panels This section shows the rear panels of the Dell Line-Interactive Rack models. Two NEMA L6-30R Receptacles REPO Ports Communication Bay (Load Segment 2) Output Circuit USB Port RS-232 Port Breaker Four IEC 320-C19 Input Terminal Ground Output Circuit...
  • Page 16: Ups Front Panel

    UPS Front Panel This section shows the front panel of the Dell Line-Interactive Rack UPS. On/Off Button LCD Panel Scroll Button (Up or Back) Scroll Button (Down or Forward) Select Button Figure 6. The Dell Line-Interactive Rack UPS Front Panel...
  • Page 17: Rackmount Setup

    Rackmount Setup CAUTION: The cabinet is heavy (see page 60): 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 by personnel knowledgeable about batteries and the required precautions.
  • Page 18 Pull the battery trays out using the plastic tabs and remove the battery trays (see Figure 8). Figure 8. Removing the Battery Trays If installing additional UPSs, repeat Step 1 for each cabinet. NOTE: The following instructions are the same for square-hole racks and unthreaded, round-hole racks. The rails fit both rack styles.
  • Page 19 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 latch locks 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 flange and the hook latch locks in place.
  • Page 20 Slide the cabinet into the rack (see Figure 10). Repeat Steps 3 through 5 for any additional cabinets. Figure 10. Installing the Cabinet Secure the front of the cabinet to the rack using the four thumbscrews on the mounting brackets (see Figure 11).
  • Page 21 Install the UPS battery trays (see Figure 12). Figure 12. Installing the Battery Trays Installation...
  • Page 22 Replace the battery retaining bracket (see Figure 13). 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. Connect each internal battery connectors and attach to the battery retaining bracket between the studs.
  • Page 23: Installing The Ebm

    Snap the UPS front cover into place (see Figure 14). Figure 14. Installing the UPS Front Cover 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.
  • Page 24: Installing The Ups

    Installing the UPS To install the UPS: If you plan to use Dell UPS Management Software, connect your computer to the USB port using the supplied cable. For more information about communication options, see page 52. If your rack has conductors for grounding or bonding of ungrounded metal parts, connect the ground cable (not supplied) to the ground bonding screw.
  • Page 25 CAUTION: To ensure the UPS stops supplying power to the load during any mode of operation, the input power must be disconnected from the UPS when the emergency power-off function is activated. NOTE: For Europe, the emergency switch requirements are detailed in Harmonized document HD-384-48 S1, “Electrical Installation of the Buildings, Part 4: Protection for Safety, Chapter 46: Isolation and Switching.”...
  • Page 26 CAUTION: If you are daisy-chaining the REPO function, observe the following connection requirements to avoid unintentional shutdown of the UPS: The left pin of the REPO port labeled “OUT” on the first UPS must be connected to the left pin of the REPO port labeled “IN”...
  • Page 27: Hardwiring The Ups Input

    Only qualified service personnel (such as a licensed electrician) shall perform the electrical installation. Risk of electrical shock. The Dell Line-Interactive Rack hardwired models require a dedicated branch circuit that meets the following requirements: 40A 2-pole circuit breaker to provide short circuit and overcurrent...
  • Page 28 To hardwire the UPS input: Switch off utility power at the distribution point where the UPS will be connected. Be absolutely sure there is no power. Remove the terminal block cover (four screws) and retain. Figure 18. Removing the Terminal Block Cover ®...
  • Page 29 Connect the input and ground wires to the terminal block according to Figure 19 and Table 1. Terminal Position Figure 19. UPS Input Terminal Block Table 1. UPS Wiring Specifications Terminal Terminal Wire Wire Function UPS Wire Function Tightening Torque Position Size Rating* Input...
  • Page 30: Ups Initial Startup

    At initial startup, input voltage auto-sensing is enabled by default. After the subsequent startup, auto-sensing is disabled until manually re-enabled by output voltage setting. NOTE: The internal batteries charge to 90% capacity in less than 4 hours. However, Dell recommends that the batteries charge for 48 hours after installation or long-term storage. Installation...
  • Page 31: Operation

    Switch on utility power where the UPS is connected. The UPS front panel display illuminates. The Dell startup screen (see Figure 20 on page 33) changes to the UPS status summary screen. The UPS front panel display shows the Standby mode...
  • Page 32: Starting The Ups On Battery

    On the control panel, press the button to check for active alarms or notices. Resolve any active alarms before continuing. See “Troubleshooting” on page 64. If there are no active alarms, a “No Active Alarms” message appears. Verify that the Normal mode icon appears on the UPS status summary screen, indicating that the UPS is operating normally and any loads are powered.
  • Page 33: Control Panel Functions

    When the UPS has a critical alarm, the backlight changes the text to dark amber and the background to amber. See Figure 20. Figure 20. Dell Line-Interactive Rack UPS Control Panel There are three buttons on the control panel:...
  • Page 34: Changing The Language

    Startup Screen During startup, the Dell logo startup screen displays for five seconds and then defaults to the UPS status summary screen. The display automatically returns to the UPS status summary screen when no button has been pressed for 15 minutes and no other screen has been locked by a user.
  • Page 35: Screen Locked

    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 UPS status summary screen just to the left of the status icon. See Figure 21. Pushing any button returns the normal button function, unlocks the screen, and removes the lock symbol.
  • Page 36 Table 3. Status Summary Screens Status Summary Screen Description UPS Critical Failure The UPS is in Fault mode. The status icon and background of the icon are flashing. Battery Mode The status icon and background of the icon are flashing. An audible alarm (0.5 seconds on/4.5 seconds off) accompanies the switch to Battery mode.
  • Page 37 Table 3. Status Summary Screens (continued) Status Summary Screen Description Battery Test Status The UPS is performing a battery test. Normal Mode The UPS is operating in Normal mode from utility power. The UPS monitors and charges the batteries as needed and provides filtered power protection to your equipment.
  • Page 38: Event Log

    Table 4. 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 part of the normal charging cycle.) Battery discharging Batteries are discharging.
  • Page 39: Measurements

    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 remaining watts available to support the load at peak demand, includes the date and timestamp of the peak demand) S Peak Consumption Watts (the peak power demand on the UPS, includes the date and timestamp of the peak demand)
  • Page 40: Control Screens

    Control Screens Table 5 describes the available control screens. Table 5. 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 the message for five seconds: Manual Bypass Command.
  • Page 41: Identification

    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. See “Dell Network Management Card“ on page 54. Settings Only available options are displayed. User settings are not protected by default. You can enable the password through the User Password setting.
  • Page 42 Table 6. Settings (continued) Description Available Settings Default Setting Set Date and Time Set Month, Day, Year, Hours, Minutes, and Seconds Date: mm/dd/yyyy 01/01/2009 Time: hh:mm:ss 12:00:00 The date format is dependent on the NOTE: language selection. Time is a 24-hour clock. NOTE: Control Commands from Serial [Enabled] [Disabled]...
  • Page 43 Table 6. Settings (continued) Description Available Settings Default Setting Battery Saving Mode [Disabled] [10%] [20%] [30%]...[100%] Disabled The UPS output is turned off in five minutes if the UPS is on battery and output power is below the selected level. On Battery Notice Delay [0s] [1s] [2s]...[99s] The UPS issues a “UPS on battery”...
  • Page 44 Table 6. Settings (continued) Description Available Settings Default Setting External Battery Modules (EBMs) [0] [1] See “Configuring the UPS for an EBM” on page 50. Charger [Enabled] [Disabled] Enabled If Enabled, batteries charge normally. If Disabled, the battery charger is off. Battery Charge % to Restart [0%] [10%] [20%] [30%]...[100%] When enabled, automatic restart is made when the...
  • Page 45: Transferring The Ups Between Modes

    Table 6. Settings (continued) Description Available Settings Default Setting The number after “Total events” shows how Clear Event Log — many events are currently stored in the log. Press the button for longer one second to reset the event count to zero and clear the log.
  • Page 46: Transferring From Bypass To Normal Mode

    Transferring from Bypass to Normal Mode To transfer from Bypass to Normal mode: Press the button for longer than one second to go to the main menu selection and scroll down to the Control menu using the button. Press the button to enter the Control menu.
  • Page 47: Configuring Load Segments

    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 and startup of your equipment. For example, during a power outage, you can keep key pieces of equipment running while you turn off other equipment.
  • Page 48: Configuring Automatic Start Delay

    Configuring Automatic Start Delay You can configure a load segment to turn on automatically after the utility power returns, if it was shut down 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 specify the restart delay time for each load segment: select zero seconds (0s is the default) to restart immediately, select 1–32767 seconds to delay for the specified time, or select Off.
  • Page 49: Configuring Automatic On Battery Shutdown

    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 when the UPS on Battery state activates.
  • Page 50: Configuring Battery Settings

    Configuring Battery Settings Configure the UPS settings for an installed EBM, including whether to run automatic battery tests and automatic 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 the UPS front panel and to any remote software.
  • Page 51: Running Automatic Battery Tests

    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 continues to Rest mode normally. The automatic test runs approximately once every three months and does not run again until after three more Float to Rest mode transitions.
  • Page 52: 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 of the UPS communication ports using an appropriate communication cable (RS-232 cable not supplied).
  • Page 53 Table 8. RS-232 Communication Port Pin Assignment Signal Name Function Direction from the UPS Unused — Transmit to external device Receive from external device Unused — Signal common (tied to chassis) — Unused — Unused — Unused — Unused — NOTE: Unused pins must be left free on all models.
  • Page 54: Dell Network Management Card (Optional)

    Secure the card with the retained screws. Figure 23. Dell Network Management Card For details on disabling control commands from the Dell Network Management Card, see the Control Commands from Serial Port setting on page 42. Refer to the Dell Network Management Card User's Guide for more information.
  • Page 55: Dell Ups Management Software

    It also gives you a complete record of critical power events, and it notifies you of important UPS or power information. If there is a power outage and the Dell Line-Interactive Rack UPS battery power becomes low, the software can automatically shut down your computer system to protect your data before the UPS shutdown occurs.
  • Page 56: 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‐free. If the atmosphere is very dusty, clean the outside of the system with a vacuum cleaner.
  • Page 57 Remove the UPS front cover (see Figure 24). Figure 24. Removing the UPS Front Cover Disconnect the internal battery connectors (see Figure 25). Figure 25. Disconnecting the Internal Battery Connectors UPS Maintenance...
  • Page 58: Storing The Ups And Batteries

    Replace the UPS front cover (see Figure 26). Figure 26. 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 to utility power.
  • Page 59: Testing Batteries

    The results display on the UPS status screen when complete. Updating the UPS Firmware To keep the UPS firmware updated with the latest improvements and benefits, visit for updates. You can download the latest firmware version and the instructions for installing it.
  • Page 60: Specifications

    S Battery S UPS block diagram Table 9. UPS Model List 208V Model 230V Models UPS Models 5600R LI (H955N), 5600W 5600R LI (J731N), 5600W External Battery Module 5600R EBM (K812N), 216 Vdc/30A (EBM) Table 10. Dimensions and Weights UPS Models EBM Model 438.0 171.5 801.4 mm...
  • Page 61 Table 12. Electrical Output 208V Models 230V Models 5600W 5600W Power Levels (Rated at Nominal Inputs) -6% to +6% of nominal voltage Regulation (Normal Mode) NOTE: Varies based on auto-detected input voltage or customer settings. Regulation (Battery Mode), -6% to +6% of nominal voltage Nominal Voltage ±5% NOTE: Varies based on auto-detected input voltage or customer settings.
  • Page 62 Table 13. Environmental and Safety 208V Models 230V Models Up to 1,500 meters: 0°C to 40°C (32°F to 104°F); UL tested 25°C (77°F) Operating Temperature Above 1,500 meters: 0°C to 35°C (32°F to 95°F) Transit/Storage -15°C to 60°C (5°F to 140°F) Temperature Relative Humidity 0–95% noncondensing...
  • Page 63 Table 14. Battery 5600W: (18) 216V, 7.2 Ah internal batteries; (18) 216V, 7.2 Ah EBM Configuration CSB GP1272 7.2 Ah or YUASA NP7-12 7Ah Battery Type 5600W: 216 Vdc internal, 216 Vdc/30A EBM Voltage UPS: (2) 30A fuses Fuses EBM: (2) 30A fuses Type Sealed, maintenance‐free, valve‐regulated, lead‐acid Charging...
  • Page 64: Troubleshooting

    Troubleshooting The Dell Line-Interactive Rack UPS is designed for durable, automatic operation and issues alarms to alert you whenever potential operating problems occur. Usually the alarms shown by the control panel do not mean that the output power is affected. Instead, they are preventive alarms intended to alert the user.
  • Page 65: Event Log Menu

    Event Log Menu From the Event Log menu, you can access the last 50 events, which includes events, notices, and alarms, arranged from newest to oldest. Events are silent conditions that are recorded in the Event Log as status information, such as “Clock Set Done.”...
  • Page 66 Table 15. Typical Alarms and Conditions (continued) Alarm or Condition Possible Cause Action Battery test did not run or One of the conditions listed in Resolve the condition, then restart the test. was interrupted. “Running Automatic Battery Tests” on page 51 was not present.
  • Page 67 Table 15. Typical Alarms and Conditions (continued) Alarm or Condition Possible Cause Action Battery Test Failed A weak battery string was This is a warning notice. Dell recommends detected during the last battery that you replace the batteries soon. (Alarm 191) test. Intermittent Alarm...
  • Page 68 Table 15. Typical Alarms and Conditions (continued) Alarm or Condition Possible Cause Action Output Overload Level 2 The load level is >101% and Remove some of the equipment from the <110% of the UPS rating. UPS. The UPS continues to operate, but (Alarm 159) transfers to Fault mode in two minutes.
  • Page 69: Silencing The Alarm

    Table 15. Typical Alarms and Conditions (continued) Alarm or Condition Possible Cause Action Inverter Fault The UPS has detected a fault in Contact your service representative. the inverter circuit while (Alarm 31) attempting a recovery from Continuous Alarm Bypass mode or Converter mode.

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