Dellt Tower UPS
500W, 1000W, and 1920/1500W
User's Guide
w w w . d e l l . c o m | s u p p o r t . d e l l . c o m
H900N, J715N, K788N, H914N, J716N, K789N
K806N, H965N
Notes and Warnings
NOTE: A NOTE indicates important information that helps you make better use of your software.
CAUTION: A CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury or in property damage incidents.
WARNING: A WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or
injury.
DANGER: A DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
DANGER: Observe the following instruction to help prevent an imminently hazardous situation which, if not
avoided, will result in death or serious injury:
S This UPS contains LETHAL VOLTAGES. All repairs and service should be performed by
AUTHORIZED SERVICE PERSONNEL ONLY. There are NO USER SERVICEABLE PARTS
inside the UPS.
Information in this document is subject to change without notice.
E 2009 Dell Inc. All rights reserved.
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.; National Electrical Code and NEC are registered
trademarks of National Fire Protection Association, Inc.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their
products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
September 2009 S 164201786 4
Table of Contents
1 Introduction
Finding Information 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Safety Warnings
3 Installation
Inspecting the Equipment 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unpacking the System 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifying the UPS Rear Panels 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifying the UPS Front Panel 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting the UPS Internal Battery 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External Battery Module Installation 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the UPS 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UPS Initial Startup 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Operation
UPS Startup and Shutdown 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting the UPS 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting the UPS on Battery 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UPS Shutdown 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Panel Functions 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the Language 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Display Functions 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Startup Screen 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screen Locked 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UPS Status 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Event Log 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measurements 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Screens 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identification 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Settings 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Retrieving the Event Log 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Behavior on Overload 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Load Segments 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controlling Load Segments Through the Display 41. . . . . . . . . . . . . . . . . . . . .
Configuring Automatic Start Delay 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Automatic on Battery Shutdown 43. . . . . . . . . . . . . . . . . . . . . . . .
Configuring Battery Settings 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring the UPS for an EBM 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Running Automatic Battery Tests 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Automatic Battery Tests 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Automatic Restart 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Additional UPS Features
RS-232 and USB Communication Ports 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dell Network Management Card (Optional) 48. . . . . . . . . . . . . . . . . . . . . . . . .
Network Transient Protector 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dell UPS Management Software 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents
6 UPS Maintenance
UPS and Battery Care 50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transporting the UPS 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storing the UPS and Batteries 53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
When to Replace Batteries 53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing Batteries 53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Updating the UPS Firmware 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Specifications
8 Troubleshooting
Accessing Alarms and Conditions 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UPS Status Menu 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Event Log Menu 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Alarms and Conditions 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Silencing the Alarm 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1
Introduction
The Dellt Tower uninterruptible power system (UPS) protects your sensitive electronic equipment
from basic power problems such as power failures, power sags, power surges, brownouts, and line noise.
Power outages can occur when you least expect them and power quality can be erratic. These power
problems have the potential to corrupt critical data, destroy unsaved work sessions, and damage
hardware — causing hours of lost productivity and expensive repairs.
With the Dell Tower 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.
Figure 1 shows the Dell Tower UPS.
Figure 1. The Dell Tower UPS
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6
Introduction
Providing outstanding performance and reliability, the UPS's unique benefits include:
S Buck and Boost voltage regulation that ensures regulated voltage to your load by correcting voltage
fluctuations.
S Start‐on‐battery capability for powering up the UPS even if utility power is not available.
S Maintenance is simplified by allowing the safe replacement of batteries without powering down the
UPS.
S Extended runtime with an optional External Battery Module (EBM) for 1000–1920W UPS models.
S Two standard communication ports (USB and DB-9 serial port).
S Optional Dell Network Management Card with enhanced communication capabilities for
increased power protection and control.
S Network transient protector that guards your network communications equipment from surges.
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.
S Firmware that is easily upgradable without a service call.
S Backed by worldwide agency approvals.
Introduction
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7
Finding Information
CAUTION: The Safety, Environmental, and Regulatory Information document provides important safety and
regulatory information.
What are You Looking For?
S The user's guide for my UPS
S The user's guide for the Dell Network Management
Card
S Dell UPS Management Software
Find It Here
Dell UPS Disc
NOTE: Documentation and software updates can be
found at
S Specifications
S How to configure UPS settings
S How to troubleshoot and solve problems
S Safety instructions
S Regulatory information
S Recycling information
S Warranty information
S Terms and Conditions (U.S. only)
S End User License Agreement
S Support information Dell Support Website — support.dell.com
Dell UPS User's Guide
The user's guide is available on the Dell UPS disc and
on support.dell.com.
Safety, Environmental, and Regulatory Information
Dell Warranty and Support Information
support.dell.com.
NOTE: Select your region or business segment to view
the appropriate support site.
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Introduction
2
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. Please read all instructions before operating the equipment and
save this manual for future reference.
DANGER:
avoided, will result in death or serious injury:
S This UPS contains LETHAL VOLTAGES. All repairs and service should be performed by
AUTHORIZED SERVICE PERSONNEL ONLY. There are NO USER SERVICEABLE
PARTS inside the UPS.
WARNING:
avoided, could result in death or injury:
S This UPS contains its own energy source (batteries). The output receptacles may carry live voltage
even when the UPS is not connected to an AC supply.
S Do not remove or unplug the input cord when the UPS is turned on. This removes the safety
ground from the UPS and the equipment connected to the UPS.
S To reduce the risk of fire, connect only to a circuit provided with branch circuit overcurrent
protection with an ampere rating in accordance with the National Electrical Code
ANSI/NFPA 70 or your local electrical code:
UPS Output Power 120V 208V 230V
500W 15A — 15A
1000W 15A — 15A
1500W (at 100V)
1920W
Observe the following instruction to help prevent an imminently hazardous situation which, if not
Observe the following instructions to help prevent a potentially hazardous situation which, if not
®
(NEC®),
20A — 15A
S To reduce the risk of fire or electric shock, install this UPS in a temperature and humidity
controlled, indoor environment, free of conductive contaminants. Ambient temperature must not
exceed 40°C (104°F). Do not operate near water or excessive humidity (95% maximum).
Safety Warnings
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9
S 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).
S If the UPS requires any type of transportation, disconnect the internal UPS batteries before
transporting (see page 51).
CAUTION:
avoided, may result in minor or moderate injury or in property damage incidents:
Observe the following instructions to help prevent a potentially hazardous situation which, if not
S For PLUGABLE EQUIPMENT, the power outlet shall be installed near the equipment and shall
be easily accessible.
S Servicing of batteries should be performed or supervised by personnel knowledgeable about
batteries and the required precautions. Keep unauthorized personnel away from batteries.
S Batteries can present a risk of electrical shock or burn from high short-circuit current. The
following precautions should be observed: 1) Remove watches, rings, or other metal objects; 2) Use
tools with insulated handles; 3) Wear rubber gloves and boots; 4) Do not lay tools or metal parts on
top of batteries; 5) Disconnect the charging source prior to connecting or disconnecting battery
terminals.
S Determine if the battery is inadvertently grounded. If inadvertently grounded, remove the utility
source from the ground. Contact with any part of a grounded battery can result in electrical shock.
The likelihood of such shock can be reduced if such grounds are removed during installation and
maintenance (applicable to equipment and remote battery supplies not having a grounded supply
circuit).
S ELECTRIC ENERGY HAZARD. Do not attempt to alter any battery wiring or connectors.
Attempting to alter wiring can cause injury.
S Replace batteries with the same number and type of batteries as originally installed in the UPS.
S Proper disposal of batteries is required. Refer to your local codes for disposal requirements.
S Never dispose of batteries in a fire. Batteries may explode when exposed to flame.
S Do not open or mutilate the battery or batteries. Released electrolyte is harmful to the skin and
eyes and may be extremely toxic.
S The 1000W and 1920/1500W UPS may be connected to a maximum of one External Battery
Module (EBM).
S To avoid interference and flicker, it is recommended that CRT monitors be placed at least one foot
away from the UPS.
10
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Safety Warnings
3
Installation
This chapter explains:
S Equipment inspection
S Unpacking the system
S UPS rear panels
S UPS internal battery connection
S UPS installation, including the External Battery Module (EBM)
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. If you discover damage after
acceptance, file a claim for concealed damage.
To file a claim for shipping damage or concealed damage: 1) File with the carrier within 15 days of
receipt of the equipment; 2) Send a copy of the damage claim within 15 days to your service
representative.
NOTE:
Check the battery recharge date on the shipping carton label. If the date has passed and the batteries
were never recharged, do not use the UPS. Contact your service representative.
Installation
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11
Unpacking the System
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 55). Use caution to unpack and move the cabinet.
To unpack the system:
1 Unpack your system and identify each item (see Figure 2).
Place the cabinet in a protected area that has adequate airflow and is free of humidity, flammable
gas, and corrosion.
2 Discard or recycle the packaging in a responsible manner, or store it for future use.
Figure 2. Unpacking the System
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12
Installation
Identifying the UPS Rear Panels
This section shows the rear panels of the Dell Tower UPS models.
UPS Communication Bay
On/Off Button
Network Transient
Protector
IEC-C14 Input
Connector
Two 5‐15 Receptacles
(Load Segment 2)
Figure 3. 500W, 100/120V Rear Panel
On/Off Button
Network Transient
Protector
OUTPUT
125V~ 15A
UPS Communication Bay
Communication Port
USB Port
Four 5‐15 Receptacles
(Load Segment 1)
Communication Port
USB Port
IEC-C14 Input
Connector
Two IEC 320-C13 Receptacles
(Load Segment 2)
Figure 4. 500W, 230V Rear Panel
Four IEC 320-C13 Receptacles
(Load Segment 1)
Installation
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13
On/Off Button
UPS Communication Bay
Network Transient
Protector
EBM Connector
IEC-C14 Input
Connector
Figure 5. 1000W, 120V Rear Panel
On/Off Button
Network Transient
Protector
Communication Port
USB Port
Two 5-15 Receptacles
(Load Segment 2)
Six 5-15 Receptacles
(Load Segment 1)
UPS Communication Bay
Communication Port
USB Port
EBM Connector
IEC-C14 Input
Connector
Figure 6. 1000W, 230V Rear Panel
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14
Installation
Two IEC 320-C13 Receptacles
(Load Segment 2)
Six IEC 320-C13 Receptacles
(Load Segment 1)
On/Off Button
USB Port UPS Communication Bay
Communication Port
Network Transient Protector
EBM Connector
IEC-C20 Input
Connector
Figure 7. 1920W/120V, 1500W/100V Rear Panel
On/Off Button
EBM Connector
Two 5-15/5-20 Receptacles
(Load Segment 2)
Eight 5-15/5-20 Receptacles
(Load Segment 1)
USB Port UPS Communication Bay
Communication Port
Network Transient Protector
Two IEC 320-C13 Receptacles
(Load Segment 2)
IEC-C14 Input
Connector
Figure 8. 1920W, 230V Rear Panel
Eight IEC 320-C13 Receptacles
(Load Segment 1)
Installation
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15
Identifying the UPS Front Panel
LCD Panel
Scroll Button (Down or Forward)
Select Button
Scroll Button (Up or Back)
Cover Latch
Figure 9. The Dell Tower UPS
Cover Latch
16
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Installation
Connecting the UPS Internal Battery
To ensure proper battery operation:
1 Verify that the UPS is off and unplugged.
2 Remove the UPS front cover (see Figure 10).
Push the two cover latches to release the front cover and pull up.
Figure 10. Removing the UPS Front Cover
3 Unscrew the thumbscrew on the the metal battery cover and lift up to remove the cover
(see Figure 11).
Figure 11. Removing the Battery Cover
Installation
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17
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.
4 Connect the internal battery connector (see Figure 12).
Figure 12. Connecting the Internal Battery Connector
5 Replace the metal battery cover.
Torque the screw to 0.7 Nm (6.2 lb in).
6 Replace the UPS front cover.
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Installation
External Battery Module Installation
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.
An optional EBM can be installed with 1000W and 1920/1500W Tower UPS models.
To install the optional EBM:
1 Remove the battery connector cover from the rear panel as shown in Figure 13. Retain the cover
and screws.
NOTE:
If the UPS is stored or used without an EBM, the battery connector cover must be installed as a safety
precaution.
Figure 13. Removing the Battery Connector Cover
Installation
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19
2 Install the battery connector cover under the EBM cable to provide strain relief (see Figure 14).
Rotate the battery connector cover on its side and position under the EBM cable.
Figure 14. Installing the Battery Connector Cover
3 Plug the EBM cable into the UPS battery connector (see Figure 15).
4 Secure the battery connector cover to the UPS rear panel using the screws removed in Step 1.
Figure 15. EBM Installation for 1000W and 1920/1500W Tower UPS Models Only
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Installation
Installing the UPS
To install the UPS:
1 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 46.
1
Connect communication cable from
computer to UPS (optional)
2
Connect equipment to UPS
Figure 16. Typical UPS Installation (120V Model Shown)
2 Plug the equipment to be protected into the UPS output receptacles, but do not turn on the
protected equipment.
NOTE:
Verify that the total equipment ratings do not exceed the UPS capacity to prevent an overload alarm.
Installation
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21
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 the power input to the UPS has adequate upstream overcurrent protection:
Table 1. Minimum Upstream Circuit Breaker Rating
UPS Output Power
500W 15A — 15A
1000W 15A — 15A
1500W (at 100V)
1920W
The power cord current ratings are listed in Table 2.
Table 2. Power Cord Ratings
120V 208V 230V
20A — 15A
Dell UPS Model and Voltage
500W and 1000W 100V JIS C8303 to C13 12A Japan Optional
500W and 1000W 120V
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22
Installation
Power Cord Rating Country Supplied Cord Set
NEMA 5-15P to C13 15A North America Yes
CNS 10917-2 to C13 15A Taiwan Optional
C13 to C14 Jumper 12A Japan Optional
NBR 14136 to C13 10A Brazil Optional
NBR 6147 to C13 10A Brazil Optional
Table 2. Power Cord Ratings (continued)
Dell UPS Model and Voltage Supplied Cord SetCountryRatingPower Cord
C13 to C14 Jumper 10A China/Korea/Australia Yes
C13 to C14 Jumper 12/10A North America/Europe Yes
CEE 7/7 Schuko to C13 10A Europe (Schuko) Optional
SEV 1011 to C13 10A Switzerland Optional
AS 3112 to C13 10A Australia Optional
IEC 60884-1 to C13 10A Switzerland Optional
IRAM2073 to C13 10A Argentina Optional
SANS 164-1 to C13 10A United Kingdom (Old) Optional
BS 1363 to C13 10A United Kingdom (New) Optional
500 and 1000W 230V
CEI 23-50 to C13 10A Italy Optional
KSC8305 to C13 10A South Korea Optional
GB2099.1 to C13 10A China Optional
NBR 6147 to C13 10A Brazil Optional
NBR 14136 to C13 10A Brazil Optional
TI16S3 to C13 10A Thailand Optional
SANS 164-1 to C13 10A South Africa Optional
IS 1293 to C13 10A India Optional
SB107-2-DI to C13 10A Denmark Optional
1920W (1500W
in Japan and
Taiwan)*
100V
120V
NEMA L5-20P to C19 15A Japan Yes
NEMA 5-20P to C19 20A North America Yes
NEMA L5-20P to C19 15A Taiwan Yes
C19 to C20 Jumper 16A North America Optional
* There are two power cords in the box, one with BSMI and PSE certified markings that can be used in Taiwan
and Japan, another cord is for regions other than Taiwan and Japan.
Installation
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23
Table 2. Power Cord Ratings (continued)
Dell UPS Model and Voltage Supplied Cord SetCountryRatingPower Cord
C13 to C14 Jumper 10A China/Korea/Australia Yes
C13 to C14 Jumper 12/10A North America/Europe Yes
CEE 7/7 Schuko to C13 10A Europe (Schuko) Optional
SEV 1011 to C13 10A Switzerland Optional
AS 3112 to C13 10A Australia Optional
GB2099 to C13 10A China Optional
IS 1293 to C13 10A India Optional
SANS 164-1 to C13 10A United Kingdom (Old) Optional
1920W 230V
BS 1363 to C13 10A United Kingdom (New) Optional
SB107-2-DI to C13 10A Denmark Optional
CEI 23-50 to C13 10A Italy Optional
IRAM2073 to C13 10A Argentina Optional
NBR 6147 to C13 10A Brazil Optional
NBR 14136 to C13 10A Brazil Optional
KSC8305 to C13 10A South Korea Optional
TI16S3 to C13 10A Thailand Optional
SANS 164-1 to C13 10A South Africa Optional
24
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Installation
4 Plug the detachable UPS power cord into the input connector on the UPS rear panel.
5 Plug the UPS power cord into a power outlet.
The UPS front panel display illuminates. The Dell startup screen changes to the UPS status
summary screen. The UPS front panel display shows the flashing Standby icon
Figure 17. Connecting the Power Cord
.
6 Press the button on the UPS rear panel.
After the startup is complete, the status icon changes to the appropriate icon based on the UPS
operating mode (see Table 4 on page 32).
Figure 18. Starting the UPS
Installation
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25
7 On the UPS status summary screen, press the button to check for active alarms or notices.
Resolve any active alarms before continuing. See “Troubleshooting” on page 59.
If there are no active alarms, a “No Active Alarms” message appears.
8 Verify that the Normal icon appears on the UPS status summary screen, indicating that the
UPS is operating normally and any loads are powered (see Table 4 on page 32).
9 If an optional EBM is installed, see “Configuring the UPS for an EBM” on page 44.
10 To change other factory-set defaults, see “Operation” on page 27.
NOTE:
Dell recommends setting the date and time.
NOTE: At initial startup, the UPS sets system frequency according to input line frequency (input frequency
auto-sensing is enabled by default). After initial startup, auto-sensing is disabled until manually re-enabled by
output frequency setting.
NOTE: 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 (8 hours for 500W models). However,
Dell recommends that the batteries charge for 48 hours after installation or long-term storage. If an optional
EBM is installed, see the recharge time listed in Table 15 on page 58.
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Installation
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 Behavior on overload
S Configuring load segments, battery settings, and automatic restart
UPS Startup and Shutdown
NOTE: The button controls only the UPS output. The button has no effect on equipment connected to
the UPS.
To start up or shut down the UPS, see:
S “Starting the UPS” on page 27
S “Starting the UPS on Battery” on page 28
S “UPS Shutdown” on page 28
Starting the UPS
To start the UPS:
4
1 Verify that the UPS power cord is plugged in.
2 Switch on utility power where the UPS is connected.
The UPS front panel display illuminates. The Dell startup screen changes to the UPS status
summary screen. The UPS front panel display shows the Standby mode icon
3 Press the button on the UPS rear panel.
After the startup is complete, the status icon changes to the appropriate icon based on the UPS
operating mode (see Table 4 on page 32).
4 On the UPS status summary screen, press the button to check for active alarms or notices.
Resolve any active alarms before continuing. See “Troubleshooting” on page 59.
If there are no active alarms, a “No Active Alarms” message appears.
5 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.
.
Operation
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27
Starting the UPS on Battery
NOTE: Before using this feature, the UPS must have been powered by utility power with output enabled at least
once.
NOTE: Utility power cannot be present at startup.
To start the UPS on battery:
1 Press the button on the UPS rear panel until the UPS beeps.
The UPS front panel display illuminates, and the UPS begins the startup sequence.
The UPS cycles through Standby mode to Battery mode. The Battery mode icon
displays on
the UPS status summary screen. The UPS supplies power to your equipment.
NOTE:
The UPS does not assume the load if you press the button less than three seconds.
2 Press the button to check for active alarms or notices.
Ignore the “UPS on Battery” notice and notices that indicate missing utility power. Resolve other
active alarms before continuing. See “Troubleshooting” on page 59. After correcting the alarms,
restart if necessary.
You can prevent a battery start (requiring utility power at the next startup) by simultaneously pressing
the
and buttons for three seconds. Battery start can be disabled. See the Start on Battery setting
on page 37.
UPS Shutdown
To shut down the UPS:
1 Press the button on the rear panel for three seconds.
The UPS begins to beep. The UPS transfers to Standby mode.
NOTE:
Releasing the button before three seconds returns the UPS to its original operating state.
2 Switch off utility power where the UPS is connected.
After utility power is removed, the UPS fully shuts down in ten seconds.
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Operation
Control Panel Functions
The UPS has a three-button graphical LCD with dual color backlight. Standard backlight is used to
light up the display with white text and a blue background. When the UPS has a critical alarm, the
backlight changes the text to dark amber and the background to amber. See Figure 19.
Figure 19. Dell Tower UPS Control Panel
There are three buttons on the control panel:
S Scroll up or back
S Select
S Scroll down or forward
Table 3 describes the functions of the LCD control buttons.
Table 3. Control Button Functions
Control Button
Sequence Function
Press for less than one second Scroll back or up to the previous menu.
Press for longer than one
second
Press for less than one second Select the menu or option to be changed.
Press for longer than one
second
Press for less than one second Scroll forward or down to the next menu option.
Press both buttons for three
seconds
Press all three buttons for five
seconds
Return/exit back one menu layer without initiating a command
or changing a setting.
Save the setting being edited.
Temporarily disable the battery startup feature until the next
power cycle. The buzzer emits a one second beep to indicate
that Battery Start has been disabled.
Shortcut for defaulting the language back to English. The
buzzer emits a one second beep to indicate that the setting has
changed to English.
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Operation
29
To select an option:
1 When scrolling through the settings, the present setting displays for each selection.
2 Press 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 new option by holding the button again for one second.
The option stops flashing.
Changing the Language
Language selection is controlled through the user settings. See Table 7 page 36 for information on
available languages.
Display Functions
The UPS provides useful information about the UPS itself, load status, events, measurements,
identification, and settings through the front panel display.
Startup Screen
During startup, the Dell logo is the default screen. This 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 pushed
for 15 minutes and no other screen has been locked by a user. When you return to the status summary
screen, press the
from the main menu list enables you to scroll through all of the UPS status menu screens, including the
status summary screen.
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30
Operation
button for one second to exit back to the menu selections. Selecting UPS Status
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 20.
Pushing any button returns the normal button function, unlocks the screen, and removes the lock
symbol.
Figure 20. A Locked Screen
Only screens that have dynamic, real-time data updates can be locked. Applicable screens include the
status summary screen, measurement screens, active alarms, and the battery status screen.
UPS Status
The UPS status provides separate screens for the following information:
S Status summary, including mode and load
S Notice or alarm status, if any are present
S Battery status, including state and charge level
See Table 4 for examples of the UPS status summary screens. The status icon in the upper right corner
of each status summary screen conveys the UPS status or mode.
Basic operating modes include:
S Normal mode
S Battery mode
S Standby mode
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Operation
31
Table 4. Status Summary Screens
Status Summary Screen
Description
UPS Critical Failure
The UPS is in Fault mode. The status icon and background 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.
When the utility power returns, the UPS transfers to Normal mode operation
while the battery recharges.
UPS in Overload Condition
The status icon and background of the icon are flashing.
Bad Battery Detected or Battery Disconnected
The status icon and background of the icon are flashing, along with the outer
shell of the battery symbol at the bottom.
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UPS General Alarms Active
The status icon and background of the icon are flashing.
Battery Test Status
The status when the UPS is performing a battery test.
Operation
Table 4. Status Summary Screens (continued)
Status Summary Screen Description
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.
Standby Mode
When the UPS is turned off and remains plugged into a power outlet, the UPS is
in Standby mode and utility power supplies the connected equipment. The UPS
is not supporting the load, but is ready to assume the load on command.
The notice and alarm screens are visible only when notices or alarms are active. There is a separate
screen for each active notice or alarm. If there are no active notices or alarms, a “No Active Alarms”
message appears in a single screen between the UPS status summary and the battery status screen. If
there are multiple notices or alarms, scroll through each notice or alarm screen to reach the first battery
status screen.
NOTE:
Events are not shown in status summary screens. They appear only in the Event Log.
Table 5 describes the available battery status screens. Only one battery status is available at a time.
Table 5. Battery Status Screens
Battery Status Screen
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.
Battery discharging Batteries are discharging.
Battery disconnected Batteries are unavailable because they are disconnected.
Charger disabled The battery charger is off. You can enable the Charger setting from the Settings
Description
(This is part of the normal charging cycle.)
menu (see page 38).
Operation
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33
Event Log
The Event Log holds up to 50 events. You can scroll through the event screens, beginning with the most
recent event.
NOTE:
The date format is dependent on the language selection.
The first row of each event screen contains the date (MM/DD/YYYY) and time (hh:mm:ss) at which the
event occurred. The second row contains the type of event and code. The event description begins on
the third row and may continue to the fourth row. The bottom right corner of the event screen displays
two numbers: an ordering number of the event in the log, followed by the total number of events in the
log.
If there are no events in the log, the event screen displays “No events in log.”
See “Retrieving the Event Log” on page 40.
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)
S Present kWh Consumption (the kWh demand on the UPS averaged over the past hour)
S Cumulative kWh Consumption (the total kWh usage, includes the date and timestamp since it
was last reset)
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Operation
Control Screens
Table 6 describes the available control screens.
Table 6. Control Screens
Control Screens
Battery Test Schedule Battery Test: yes | Cancel Battery test: no
Reset Error State Reset Alarms: yes | no
Load Segments Load segment 1: on | off
Restore Factory Settings Restore Factory Settings: yes | no
Description
Starts a manual battery test.
See “Testing Batteries” on page 53.
Manually clears any latched alarms, such as bad battery detected or DC Bus
OV/UV.
If a bad battery alarm was also active, reset the battery test status to “Not
Tested.”
Load segment 2: on | off
These on/off commands override automatic load segment on/off controls made by
the Automatic Start Delay and Automatic On Battery Shutdown settings. See
“Configuring Load Segments” on page 41.
Available only in Standby mode.
Restoring the factory settings:
S Returns all user-configurable EEPROM settings to default factory settings
S Resets all pending on/off commands
S Clears the Event Log and resets all time stamps
S Resets the battery test status
S Initiates the Self Diagnostics test
Operation
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35
Identification
The identification screens display the following UPS information:
S Type and model
S Part number
S Serial number
S UPS 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 48.
Settings
Only available options are displayed.
User settings are not protected by default. You can enable the password through the User Password
setting.
Table 7 displays the options that can be changed by the user.
Table 7. Settings
Description
Change Language [English] [French] [German] [Spanish] [Japanese]
User Password [Enabled] [Disabled]
Audible Alarms [Enabled] [Disabled]
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36
Operation
Available Settings Default Setting
[Simplified Chinese] [Russian] [Korean]
[Traditional Chinese]
If Enabled, the default password is USER.
NOTE: If you enter an incorrect password, the
message “Wrong Password” appears. Press any
button to return to the password screen and retry
the password.
NOTE: If you disable audible alarms, it takes effect
instantly and remains disabled, even after a power
cycle. This differs from the mute feature where the
horn is temporarily silenced on any button press,
but turns on again if a new alarm is triggered.
English
Disabled
Enabled
Table 7. Settings (continued)
Description Default SettingAvailable Settings
Set Date and Time Set Month, Day, Year, Hours, Minutes, and Seconds
Date:mm/dd/yyyy
Time: hh:mm:ss
NOTE: The date format is dependent on the
01/01/2009
12:00:00
language selection.
NOTE: Time is a 24-hour clock.
Control Commands from Serial
Port
[Enabled] [Disabled]
If Enabled, control commands are accepted through
Enabled
the serial port, USB ports, or option card.
If Disabled, configuration and load control
commands are restricted to LCD only.
Output Voltage
[100V] [110V] [120V] [Auto-sensing]
Auto-sensing
[200V] [208V]
[220V] [230V] [240V]
Output Frequency [50Hz] [60Hz] [Auto-sensing] Auto-sensing
Overload Alarm Level [10%] [20%] [30%]...[100%]
100%
If 100%, the UPS issues an Output Overload alarm
at load > 100%.
NOTE: Output Overload Level 1 by default is set to
100% and is configurable from 10% to 100% in 10%
increments through the LCD setting menu. This
allows customers to be alerted before the UPS has
reached its rated capacity limits.
Automatic Start Delay [Off] [0s] [1s] [2s]...[32767s]
0s
See “Configuring Load Segments” on page 41.
Automatic on Battery Shutdown [Off] [0s] [1s] [2s]...[32767s]
Off
See “Configuring Load Segments” on page 41.
Start on Battery [Enabled] [Disabled]
NOTE: Battery start is disabled from the factory and
Enabled
remains disabled until the UPS has been powered
from utility and enters Standby mode. After the
UPS has been started once from utility, the Start on
Battery feature is automatically enabled. After this is
set by the user, it remains set.
Operation
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37
Table 7. Settings (continued)
Description Default SettingAvailable Settings
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 [0] [1s] [2s]...[99s]
0s
The UPS issues a “UPS on battery” notice in the
specified number of seconds after the UPS starts to
discharge the batteries.
Site Wiring Fault Alarm [Enabled] [Disabled] Disabled for 208V
models; Enabled for
all others
External Battery Module (EBM) [0] [1]
0
See “Configuring the UPS for an EBM” on page 44.
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%]
0%
When enabled, automatic restart is made when the
battery charge state reaches the selected level. If set
to 0, the feature is disabled.
Battery Low Alarm [Immediate] [2 min] [3 min] [5 min]
3 min
If you select a value, the battery low alarm triggers
when the set amount of backup time
(approximately) remains in the batteries.
Automatic Battery Tests [Enabled] [Disabled]
Enabled
See “Running Automatic Battery Tests” on page 45.
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Operation
Table 7. Settings (continued)
Description Default SettingAvailable Settings
Reset Peak Consumption Watts [No] [Yes]
If No, no action.
If Yes, the Peak Consumption Watts value is
cleared and the date and time stamp for this
statistic is set to the current date and time.
Reset Cumulative Consumption
kWh
[No] [Yes]
If No, no action.
If Yes, the Cumulative Consumption kWh value is
cleared and the date and time stamp for this
statistic is set to the current date and time.
Reset Peak Headroom Watts [No] [Yes]
If No, no action.
If Yes, the Peak Headroom Watts value is cleared
and the date and time stamp for this statistic is set
to the current date and time.
Clear Event Log
The number after “Total events” shows how
many events are currently stored in the log.
Press the button for one second to reset
the event count to zero and clear the log.
LCD Contrast [-5], [-4], [-3], [-2], [-1], [+0], [+1], [+2], [+3],
[+4], [+5]
The LCD Contrast is adjustable and the valid range
is from -5 to +5. This range covers the maximum
adjustment for contrasting the background with the
text in the visual display of the control panel.
No
No
No
—
[+0]
Operation
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39
Retrieving the Event Log
To retrieve the Event Log through the display:
1 Press the button for one second to go to the main menu selection and scroll down to the
Event Log menu using the
2 Press the button to enter the Event Log list.
3 Scroll through the listed events, notices, and alarms using either the button or the button.
4 To return to the main menu, press the button for one second. The Event Log displays.
5 Press the button. The UPS status screen displays.
button.
Behavior on Overload
See Table 8 for an explanation of how the UPS responds to an overload condition.
Table 8. Behavior on Overload
Overload Severity
Level 1 100% to 101% Overload alarm only and
Level 2 102% to 110% Transfer to Fault mode in
Level 3 > 110% Transfer to Fault mode in
Load Level On Utility Power On Battery
Overload alarm only, support load until
support load indefinitely
2 minutes (±1 sec)
300 ms to 1 sec
low battery shutdown level is reached
Transfer to Fault mode in 12 seconds
(±1 sec) or until low battery shutdown
level is reached
Transfer to Fault mode in 300 ms to
1 sec
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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 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. This feature allows you to save battery power.
Each Dell Tower model has two configurable load segments. See “Identifying the UPS Rear Panels” on
page 13 for the load segment locations.
To control the load segments with power management software, see your power management software
manual for details (refer to the Software CD or www.dell.com for the latest information).
Controlling Load Segments Through the Display
To control the load segments through the display:
1 Press the button for one second to go to the main menu selection and scroll down to the
Control menu using the
2 Press the button to enter the Control menu.
3 Use the button to scroll to Load Segments.
4 Press the button.
The current setting for the option flashes when selected.
button.
5 Select the desired load segment using the and buttons.
6 Set the desired load segment ON or OFF using the button.
7 Press the button for one second to confirm.
8 Set the other load segment if applicable.
Operation
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41
Configuring Automatic Start Delay
You can configure the 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.
To set the restart delay times for each load segment:
1 Press the button for one second to go to the main menu selection and scroll down to the
Settings menu using the
2 Press the button to enter the Settings menu.
3 Use the button to scroll to the Automatic Start Delay option and press the button.
button.
The current setting for the option flashes when selected.
4 Set the restart delay for one load segment using the and buttons.
5 Press the button to confirm.
6 Set the restart delay for the other load segment if applicable.
7 Press the button to confirm.
NOTE:
Load segment On/Off commands issued through the Control menu override the user settings for load
segments.
NOTE: A single load segment delay applies to both outlets. However, there is an additional built-in one-second
delay between closing segment 1 and 2. The delay is always present when an On command is issued for both
segments at the same time.
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42
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 when the UPS on Battery state
activates.
If you select a value, the load segment turns off automatically after the selected delay while the UPS
operates on battery, but the shutdown is cancelled if the utility returns before the delay has expired.
To set the shutdown times for each load segment:
1 Press the button for one second to go to the main menu selection and scroll down to the
Settings menu using the
2 Press the button to enter the Settings menu.
3 Use the button to scroll to the Automatic on Battery Shutdown option and press the button.
The options display and the current settings flash when selected.
4 Set the shutdown delay for one load segment using the and buttons.
5 Press the button to confirm.
6 Set the shutdown delay for the other load segment if applicable.
7 Press the button to confirm.
button.
Operation
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43
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. You may receive a shutdown warning prematurely. To ensure
maximum battery runtime when using power management software, configure the UPS for the EBM:
1 Press the button for one second to go to the main menu selection and scroll down to the
Settings menu using the
2 Press the button to enter the Settings menu.
3 Use the button to scroll to the External Battery Module option and press the button.
The battery number value begins to flash.
4 Set the battery number value using the and buttons.
button.
Configuration
UPS only (internal batteries) 0 (default)
UPS + 1 EBM 1
NOTE: Runtime is automatically adjusted based on present load levels and whether an EBM is configured.
5 Press the button to confirm.
Setting
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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 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. If a manual battery test is requested, the
automatic battery test timer is reset so it will not run for the next three months.
For an automatic battery test to run:
S The Automatic Battery Tests setting must be enabled for the automatic battery tests to run. (See
the following section, “Configuring Automatic Battery Tests.”)
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%.
Configuring Automatic Battery Tests
To configure the automatic battery tests:
1 Press the button for one second to go to the main menu selection and scroll down to the
Settings menu using the
2 Press the button to enter the Settings menu.
3 Use the button to scroll to the Automatic Battery Tests option and press the button.
button.
The option begins to flash.
4 Select whether to enable or disable the automatic battery test using the and buttons.
5 Press the button to confirm.
Configuring Automatic Restart
The UPS automatically restarts if the utility power returns after the output was shut off due to depleted
batteries, a shutdown input signal, or automatic shutdown command.
You can set the load segment for the amount of time to delay the restart when utility power returns,
using the Automatic Start Delay setting. You can also configure UPS restart to depend on the battery
charge level, using the Battery Charge % to Restart setting.
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Operation
45
5
Additional UPS Features
This chapter describes:
S Communication ports (RS-232 and USB)
S Dell Network Management Card
S Network transient protector
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). See
“Identifying the UPS Rear Panels” on page 13 for the communication port locations.
When the communication cable is installed, power management software can exchange data with the
UPS. The software polls the UPS for detailed information on the status of the power environment. If a
power emergency occurs, the software initiates the saving of all data and an orderly shutdown of the
equipment.
The cable pins for the RS-232 communication port are identified in Figure 21, and the pin functions are
described in Table 9.
1
2
3
4
5
Figure 21. RS-232 Communication Port (DB-9 Connector)
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46
Additional UPS Features
6
7
8
9
Table 9. RS-232 Communication Port Pin Assignment
Pin
Signal Name Function Direction from the UPS
1 Unused —
2 Tx Transmit to external device Out
3 Rx Receive from external device In
4 Unused —
5 GND Signal common (tied to chassis) —
6 Unused —
7 Unused —
8 Unused —
9 Unused —
*Unused pins must be left free on all models.
Additional UPS Features
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47
Dell Network Management Card (Optional)
The Dell Tower UPS has one available communication bay, which supports the optional Dell Network
Management Card. See Figure 22 for the location of the communication bay.
It is not necessary to shut down the UPS before installing a communication card.
1 Remove the slot cover secured by two screws. Retain the screws.
2 Insert the communication card into the slot.
3 Secure the card with both screws.
Figure 22. 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 37.
Refer to the Dell Network Management Card User's Guide for more information.
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48
Additional UPS Features
Network Transient Protector
The network transient protector, shown in Figure 23, is located on the rear panel and has jacks labeled
IN and OUT. This feature accommodates a single RJ‐45 (10BaseT) network connector.
NOTE:
DO NOT connect any telephone or fax/modem equipment (RJ-11) to the UPS.
1 Connect the input connector of the equipment you are protecting to the jack labeled IN.
2 Connect the network cable to the jack labeled OUT.
OUT
OUT IN
IN
500–1000W
Figure 23. Network Transient Protector
1920/1500W
Dell UPS Management Software
Each Dell Tower UPS ships with Dell UPS Management Software.
Dell UPS Management Software provides up-to-date graphics of UPS power and system data and power
flow. 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 Tower UPS battery power becomes low, the
software can automatically shut down your computer system to protect your data before the UPS
shutdown occurs.
For details on disabling control commands from the software, see the user setting for Control
Commands from Serial Port setting on page 37.
Additional UPS Features
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49
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.
For full battery life, keep the UPS at an ambient temperature of 25°C (77°F).
NOTE:
The batteries in the UPS are rated for a 3–5 year service life. The length of service life varies, depending
on the frequency of usage and ambient temperature. Batteries used beyond expected service life will often
have severely reduced runtimes. Replace batteries at least every 5 years to keep units running at peak
efficiency.
6
50
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UPS Maintenance
Transporting the UPS
NOTE: The internal UPS batteries MUST be disconnected before transportation.
CAUTION: The following procedure should be performed or supervised by personnel knowledgeable about
batteries and the required precautions. Keep unauthorized personnel away from batteries.
If the UPS requires any type of transportation, the batteries must be disconnected (but not removed)
before the unit is transported:
1 Verify that the UPS is off and unplugged.
2 Remove the UPS front cover (see Figure 24):
Push the two cover latches to release the front cover and pull up.
Figure 24. Removing the UPS Front Cover
UPS Maintenance
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51
3 Unscrew the thumbscrew on the the metal battery cover and remove the cover (see Figure 25).
Figure 25. Removing the Battery Cover
4 Disconnect the internal battery connector (see Figure 26).
Figure 26. Disconnecting the Internal Battery Connector
5 Replace the metal battery cover.
Torque the screw to 0.7 Nm (6.2 lb in).
6 Replace the UPS front cover.
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52
UPS Maintenance
Storing the UPS and Batteries
If you store the UPS for a long period, recharge the battery every 6 months by plugging the UPS into a
power outlet. The batteries charge to 90% capacity in approximately 4 hours (8 hours for 500W
models). However, it is recommended that the batteries charge for 48 hours after long-term storage.
Check the battery recharge date on the shipping carton label. If the date has passed and the batteries
were never recharged, do not use the UPS. Contact your service representative.
When to Replace Batteries
When the status summary screen displays the UPS fault icon with the “Service Battery” alarm and the
audible alarm sounds continuously, the batteries may need replacing. Contact your service
representative to order new batteries.
NOTE:
With the user-replaceable battery feature, UPS batteries can be replaced easily without turning the UPS
off or disconnecting the load.
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 the batteries:
1 Plug the UPS into a power outlet for at least 48 hours to charge the batteries.
2 Press the button for one second to go to the main menu selection and scroll down to the
Control menu using the
3 Press the button to enter the Control menu.
4 Use the button to scroll to the Battery Test option.
5 Press the button to start the battery test.
During the battery test, the UPS transfers to Battery mode and discharges the batteries for 25% of
the original expected runtime. The front panel displays “Battery test running” and the percentage
of the test completed. The results display on the UPS front panel when complete.
button.
UPS Maintenance
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53
Updating the UPS Firmware
To keep the UPS firmware updated with the latest improvements and benefits, visit www.dell.com for
updates. You can download the latest firmware version and the instructions for installing it.
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UPS Maintenance
Specifications
This chapter provides the following specifications:
S Model list
S Dimensions and weights
S Electrical input and output
S Environmental and safety
S Battery
S UPS block diagram
Table 10. Model List
100/120V Models 230V Models
UPS Models 500T LV (H900N), 500W
1000T LV (K788N), 1000W
1920T LV (J716N), 1920W
(1500W at 100V)
External Battery Module
(EBM)
1000T EBM (K806N), 36 Vdc
1920T EBM (H965N), 72 Vdc
7
500T HV (J715N), 500W
1000T HV (H914N), 1000W
1920T HV (K789N), 1920W
Table 11. Dimensions and Weights
UPS Models EBM Models
Dimensions
(W H D)
Weights 500W: 11.6 kg (25.6 lb)
500W: 170.0 216.0 393.0 mm
(6.7” 8.5” 15.5”)
1000W: 170.0 250.0 450.0 mm
(6.7” 9.8” 17.7”)
1920/1500W: 226.0 274.5 500.0 mm
(8.9” 10.8” 19.7”)
1000W: 18.3 kg (40.3 lb)
1920/1500W: 30.5 kg (67.2 lb)
1000W: 170.0 250.0 450.0 mm
(6.7” 9.8” 17.7”)
1920W: 226.0 274.5 500.0 mm
(8.9” 10.8” 19.7”)
1000W: 23.1 kg (47.6 lb)
1920W: 42.5 kg (93.6 lb)
Specifications
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55
Table 12. Electrical Input
100/120V Models 230V Models
Nominal Voltage 100/120V 230V
Voltage Range 84–150V auto-sensing 160–286V auto-sensing
Nominal Frequency 50/60 Hz auto-sensing, ±3 Hz
Efficiency (Normal mode) >95%
Noise Filtering Full-time EMI/RFI filtering
Connections 500W, 1000W: IEC 320-C14
input connector, 15A
500W, 1000W, 1920W:
IEC 320-C14 input connector, 10A
1920/1500W: IEC 320-C20 input connector,
20A
Table 13. Electrical Output
100/120V Models 230V Models
Power Levels
(rated at nominal inputs)
500W
1000W
1920W (1500W for 100V)
Regulation (Normal mode) 100V: 92–108V
110V: 100–121V
120V: 106–132V
Regulation (Battery mode),
Same as line mode
220V: 198–243V
230V: 208–253V
240V: 216–264V
Nominal Voltage ±5%
Voltage Waveform Sine wave
Output Receptacles 500W: (4) 5-15R; 15A
(2) 5-15R; 15A
1000W: (6) 5-15R; 15A
(2) 5-15R; 15A
1920/1500W: (8) 5-15/5-20R; 10A
(2) 5-15/5-20R; 10A
500W: (4) IEC 320-C13, 15/10A
(2) IEC 320-C13, 15/10A
1000W: (6) IEC 320-C13, 15/10A
(2) IEC 320-C13, 15/10A
1920W: (8) IEC 320-C13, 10A
(2) IEC 320-C13, 10A
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Specifications
Table 14. Environmental and Safety
100/120V Models 230V Models
Operating Temperature Up to 1,500 meters: 0°C to 40°C (32°F to 104°F)
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
Operating Altitude Up to 3,048 meters (0–10,000 ft) above sea level
Audible Noise Normal mode: less than 40 dBA typical
Battery mode: less than 50 dBA typical
Fan Speed Off: when the UPS is in Standby mode or there is no load
Low speed: when the load is <80%
High speed: when the load is >80% or the UPS is in Battery mode
Surge Suppression ANSI/IEEE C62.41; 2002 Category B
Safety Conformance UL 1778 4th Edition;
CSA C22.2, No. 107.3
UL 1778 4th Edition;
CSA C22.2, No. 107.3;
IEC/EN 62040-1-1; IEC/EN 60950-1
Agency Markings UL, cUL, NOM/NYCE UL, cUL, CE, GS, GOST, BSMI,
S-MARK, KC, CQC, NRCS, SIRIM
EMC FCC, VCCI, ICES-003, BSMI CE, BSMI, CQC, C-tick
Specifications
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57
Table 15. Battery
Configuration 500W: (2) 12V, 7 Ah internal batteries (no EBM)
1000W: (3) 12V, 9 Ah internal batteries; (6) 12V, 9 Ah EBM
1920/1500W: (6) 12V, 9 Ah internal batteries; (12) 12V, 9 Ah EBM
Voltage 500W: 24 Vdc internal
1000W: 36 Vdc internal, 36 Vdc EBM
1920/1500W: 72 Vdc internal, 72 Vdc EBM
Fuses 500W internal battery: (2) 40A fuses
1000W, 1920W EBMs: (4) 30A fuses
1000W, 1920/1500W internal batteries:
(2) 30A fuses
Type Sealed, maintenance‐free, valve‐regulated, lead‐acid
Charging Internal batteries: approximately 4 hours to 90% (8 hours for 500W models) usable
capacity at nominal line and no supplementary power supply load
EBMs: approximately 12 hours to 90% from a discharge of 50% rated load
Monitoring Advanced monitoring for earlier failure detection and warning
Battery Runtimes Internal batteries: 5 minutes at full load/14 minutes at half load
UPS with one EBM attached: 19 minutes at full load/45 minutes at half load
*Battery runtimes are approximate and vary depending on the load configuration and battery charge.
Input
Filter
Battery
Figure 27. Line-Interactive UPS Block Diagram
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58
Specifications
Charger
DC/DC
Converter
AVR
Output
Filter
DC/AC
Inverter
8
Troubleshooting
The Dell Tower 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.
Active alarms and active notices are accompanied by an audible buzzer.
Accessing Alarms and Conditions
The control panel provides troubleshooting information from two main menus:
S UPS Status menu: access to all active alarms
S Event Log menu: access to the most recent 50 events, which may include active and closed alarms
UPS Status Menu
From the UPS Status menu, you can access the following screens for troubleshooting information:
S Status summary screen: The status summary screen provides information on both mode and load.
When there is a critical alarm, the status summary screen changes from its normal white text on a
blue background to dark amber text on an amber background.
S Notice or alarm screens: A separate screen appears for each active notice or alarm. If there are no
active alarms or notices, the display reads “No Active Alarms.”
S Battery status screen: The battery status screen indicates the battery charge mode, the percent the
battery is charged, and the runtime with the present load level.
NOTE:
When an alarm is active, the control panel automatically displays an active alarm screen unless the
screen lock is enabled by the user.
To access troubleshooting information using the UPS Status menu:
1 Press the button for one second to go to the main menu selection.
2 Press the button to access the UPS Status menu.
3 Press the button to access the UPS status summary screen.
The UPS status summary screen provides load information. The status icon indicates the UPS
operating mode (see Table 4 on page 32).
4 Use the button to scroll through the active notice and active alarm screens.
5 After scrolling through all alarms, press the button to access the Battery Status screen.
Troubleshooting
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59
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.” Events do not require a response.
Notices and alarms are records of when events occurred and, if applicable, when they were cleared.
S Notices, including active notices, are recorded in the Event Log. Active notices, such as “UPS on
Battery,” are announced by an intermittent beep. Notices do not normally require a response.
S Alarms, including active alarms, are recorded in the Event Log. Active alarms are announced by an
intermittent beep. Examples are “Output Overload” and “Heatsink Overtemperature.” Active
alarms require a response.
The Main Status Menu displays by default. To access troubleshooting information using the Event Log
menu:
1 Press the button for one second to go to the main menu selection and scroll down to the
Event Log menu using the
button.
2 Click the button to enter the Event Log list.
3 Scroll through the listed events, notices, and alarms using the or button.
Typical Alarms and Conditions
Table 16 describes typical alarms and conditions.
Table 16. Typical Alarms and Conditions
Alarm or Condition
The UPS does not provide or
indicate the expected backup
time.
Power is not available at the
UPS output receptacles.
The UPS does not start. (The
LCD is off.)
The UPS operates normally,
but some or all of the
protected equipment is not
on.
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60
Troubleshooting
Possible Cause Action
The batteries need charging or
service.
The UPS is in Standby mode. Supply power to the connected equipment by
Power is not connected. Check the power cord connections. Also
The equipment is not
connected correctly to the UPS.
Apply utility power for 48 hours to charge the
batteries. If the condition persists, contact
your service representative.
pressing the On/Off button until the front
panel displays the UPS status summary screen.
ensure that the battery is plugged in.
Verify that the equipment is plugged into the
UPS receptacles. Also verify that the load
segment is on.
Table 16. Typical Alarms and Conditions (continued)
Alarm or Condition ActionPossible Cause
Battery test did not run or
was interrupted.
One of the conditions listed in
“Running Automatic Battery
Tests” on page 45 was not
present.
UPS on Battery
(Notice 168)
A utility failure has occurred
and the UPS is in Battery mode.
Intermittent Alarm
Battery Disconnected
(Alarm 199)
Continuous Alarm
The UPS does not recognize the
internal batteries.
Battery voltage is lower than the
batteries disconnected level
defined for this UPS. This may
be due to a blown fuse,
intermittent battery
connection, or battery cable
being disconnected.
Low Battery Warning
(Alarm 56)
Continuous Alarm
Shutdown Imminent
(Alarm 55)
Continuous Alarm
Battery time remaining or
battery capacity is lower than
the battery low warning level
defined for this UPS.
Communication to external
devices stops because the UPS
has entered a state where it may
abruptly stop operating without
further notice unless utility
returns.
Battery Test Failed
(Alarm 191)
Intermittent Alarm
Service Battery
(Alarm 149)
Continuous Alarm
Utility Not Present
(Alarm 59)
Intermittent Alarm
A weak battery string was
detected during the last battery
test.
A faulted battery string has
been detected and as a result,
the charger is disabled.
Utility level has fallen below the
Utility Not Present threshold
(typically <25 to 50V).
Resolve the condition, then restart the test.
The UPS is powering the equipment with
battery power. Prepare your equipment for
shutdown.
If the condition persists, contact your service
representative.
Verify that all batteries are properly connected.
If the condition persists, contact your service
representative.
This warning is approximate. The actual time to
shutdown may vary depending on the UPS load
and presence of an External Battery Module
(EBM).
The alarm is issued when the battery time
remaining reaches zero. All connected devices
should have already shut down gracefully.
This is a warning notice. Dell recommends
that you replace the batteries soon.
Contact your service representative.
The UPS transfers to Battery mode if
supporting the load. The UPS shuts down if it
is not supporting the load.
Troubleshooting
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61
Table 16. Typical Alarms and Conditions (continued)
Alarm or Condition ActionPossible Cause
Input AC Over Voltage
(Alarm 6)
Utility voltage exceeds the
maximum operating range.
Intermittent Alarm
Input AC Under Voltage
(Alarm 7)
Utility voltage is below the
minimum operating range.
Intermittent Alarm
Input Under/Over Frequency
(Alarm 8)
The utility frequency is out of
usable frequency range.
Intermittent Alarm
Site Wiring Problem
(Alarm 194)
Continuous Alarm
Output Overload
(Alarm 25)
Continuous Alarm
Output Overload Level 2
(Alarm 159)
An alarm triggers when the
difference between ground and
neutral voltage is >15V.
The load level is at or has
exceeded the configurable
threshold limit for a Level 1
Overload condition.
The load level is >101% and
<110% of the UPS rating.
Continuous Alarm
Output Overload Level 3
(Alarm 162)
The load is >110% of the UPS
rating.
Continuous Alarm
Battery DC Over Voltage
(Alarm 68)
Continuous Alarm
Charger Failure
(Alarm 34)
Battery voltage levels have
exceeded the maximum
allowable limits.
A battery charger fault has been
detected.
Continuous Alarm
The UPS transfers to Battery mode if
supporting load.
The UPS transfers to Battery mode if
supporting load.
The UPS transfers to Battery mode if
supporting load.
Have a qualified electrician correct the wiring
problem. If the UPS is not wired with a neutral
wire, Site Fault should be disabled in the
Settings menu (see page 36).
The UPS can support the load indefinitely at
this load level.
The alarm clears when the load drops below
5% of the set point.
Remove some of the equipment from the
UPS. The UPS continues to operate, but
transfers to Fault mode in two minutes.
The alarm clears when the load drops below
5% of the set point.
Remove some of the equipment from the
UPS. The UPS continues to operate, but
transfers to Fault mode in 300 ms to one
second.
The alarm clears when the load drops below
5% of the set point.
The UPS turns off the charger until the next
power recycle. Contact your service
representative.
The UPS turns off the charger until the next
power recycle. Contact your service
representative.
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Troubleshooting
Table 16. Typical Alarms and Conditions (continued)
Alarm or Condition ActionPossible Cause
Output Short Circuit
(Alarm 58)
Continuous Alarm
Heatsink Over Temperature
(Alarm 73)
Continuous Alarm
Fatal EEPROM Fault
(Alarm 53)
Continuous Alarm
Fan Failure
(Alarm 193)
Continuous Alarm
The UPS has detected an
abnormally low impedance
placed on its output and
considers it a short circuit.
The UPS has detected that one
of its heat sinks has exceeded
the maximum defined
operating temperature. Possible
fan failure.
There is EEPROM data
corruption due to a failed
device or incorrect flash
upgrade.
The UPS has detected that one
or more fans are not
functioning properly.
The UPS shuts down after five line cycles.
Ensure that the fans are spinning and that the
air intake vents on the UPS are not blocked.
Once the maximum temperature is reached,
the UPS shuts down.
Contact your service representative.
This is an alarm only. Contact your service
representative immediately and remove the
load.
Silencing the Alarm
Press any button on the control panel to silence the alarm. Check the alarm condition and perform the
applicable action to resolve the condition. If any new alarm becomes active, the audible alarm resumes,
overriding the previously silenced alarm.
Troubleshooting
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