The DLance Book
Page 2 of 2
TABLE OF CONTENTS
The DLance Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Chapter 1: WS_FTP and Symmetra. . . . .1
WS_FTP Pro for Windows . . . . . . . . . . . . . . . . . . . . . . . . . . 1
What Is WS_FTP Pro? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
How to Use WS_FTP Pro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
How to Connect to an FTP Site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Symmetra Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power Processing System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Battery Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Control/User Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Load-Disconnect Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Online Operating Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
On-Battery Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Bypass Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 2: WS_FTP and Symmetra. . . .15
WS_FTP Pro for Windows . . . . . . . . . . . . . . . . . . . . . . . . . 15
What Is WS_FTP Pro? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
i
Table of Contents
How to Use WS_FTP Pro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
How to Connect to an FTP Site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Symmetra Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Power Processing System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Battery Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Control/User Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Load-Disconnect Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Online Operating Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
On-Battery Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Bypass Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Chapter 3: WS_FTP and Symmetra. . . .29
WS_FTP Pro for Windows . . . . . . . . . . . . . . . . . . . . . . . . . 29
What Is WS_FTP Pro? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
How to Use WS_FTP Pro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
How to Connect to an FTP Site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Symmetra Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Power Processing System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Battery Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Control/User Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Load-Disconnect Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Online Operating Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
On-Battery Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Bypass Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
iiiiii
Chapter 1: WS_FTP and Symmetra
In This Chapter:
• WS_FTP Pro for Windows
• Symmetra Overview
• Operating Modes
WS_FTP Pro for Windows
These instructions were written to familiarize nonspecialists and executives with WS_FTP Pro.
The following instructions introduce you to WS_FTP Pro, a shareware
program that enables you to upload and download files on the Internet,
and then shows you how to perform basic tasks. To understand these
instructions, you need an Internet account and basic familiarity with
Microsoft Windows.
Local files
Server files
Page 2 of 14
Chapter 1: WS_FTP and Symmetra
What Is WS_FTP Pro?
WS_FTP Pro is a program that allows you to send (upload) and receive
(download) files on the Internet. WS_FTP Pro can be used for uploading personal web pages and downloading software.
Because FTP (File Transfer Protocol) can handle large files, using the
WS_FTP Pro program is also a more reliable way to transfer files than
using email attachments.
How to Use WS_FTP Pro
Click on your Start menu, select Programs, then WS_FTP Pro. The
WS_FTP Pro application launches on your system. You will use this to
connect to your web server, and drag files from the left screen area that
lists files on your local drives (and looks similar to Windows Explorer),
to the right area, that shows files on the remote server.
How to Connect to an FTP Site.
Before you can transfer files to or from an FTP site, you must first connect to the site.
1. Open a web browser.
2. Open this URL: www.foobar.com
3. Register in the site, and then view the tutorial videos beginning
with “Using WS_FTP Interface to upload files to a web server.
[Numbered]
Symmetra Overview
Page 3 of 14
Symmetra Overview
The Symmetra is a high-performance, uninterpretable power array system that is designed for large-scale loads. It provides conditioned, reliable AC power to load equipment, and provides protection from power
blackouts, brownouts, swells, sags, surges, and interference. The Symmetra Power Array system is comprised of either a MiniFrame, or a
MasterFrame, and a variable set of hot swappable modules. A MiniFrame system can be configured to deliver a maximum output of
8kVA, and a MasterFrame system can deliver a maximum of 16kVA.
The computer system that manages the system and provides system
notifications, the power processing components, and the batteries
themselves are all designed as stand alone modules. If one should fail,
it can easily be replaced by an onsite technician without interrupting
the flow of power to the datacenter.
MiniFrame
MasterFrame
Page 4 of 14
Chapter 1: WS_FTP and Symmetra
Theory of Operation
The Symmetra Power Array is comprised of three functional components: A power processing system, a battery source, and a control/user
interface system. The relationship of these functional components is
illustrated below.
Symmetra Overview
Power Processing System
The power processing system delivers conditioned AC output power
with a low distortion sinewave. Under normal operating conditions,
power is received from the AC mains (utility) power source, conditioned by the power processing system, and delivered to the load equipment. In the event of an AC mains power source failure, the power
processing system receives power from the battery source (battery
modules), converts it to conditioned AC, and delivers it to the load
equipment. When AC mains power is present, the power processing
system also maintains the battery source at full charge. The power processing system in a Symmetra is comprised of one or more power modules. Each power module contains the electronic components for a
complete 4kVA UPS, including the rectifier, charger and inverter.
When two or more power modules are present, they operate in parallel,
sharing the load equally.
By configuring the system with at least one more power module than is
required to power the load (a redundant power module), Symmetra can
sustain a power module failure and still deliver full power to the load
equipment. The failed module is identified by the control/user interface
system, an alarm is initiated to notify the user of the module failure,
and the hot-swappable module can be replaced by the user, without the
need to power down the load equipment.
A Symmetra MiniFrame provides bays for up to three power modules,
and a MasterFrame provides bays for up to five. This provides the full
system capacity (8kVA and 16kVA respectively), plus one redundant
power module.
Battery Source
The battery source is comprised of parallel, hot-swappable, 120V battery modules. These are housed in the Symmetra frame, and in an
optional XR Extension Battery frame. A Symmetra MiniFrame provides bays for up to two battery modules and a MasterFrame provides
bays for up to four. Both of these frames can be connected to an XR
Extension Battery frame. Additional battery modules increase onbattery run time.
Page 5 of 14
Page 6 of 14
Chapter 1: WS_FTP and Symmetra
Control/User Interface
The control/user interface system coordinates the operation of the Symmetra and reports status conditions via several user interface options.
Functions performed by the control user interface component include
module coordination and state control, analysis and reporting of system
status, and reporting of alarm conditions.
Module Coordinations & State Control - The Symmetra incorporates
a main intelligence module (MIM) that continuously monitors the system, and delivers data to both the PowerView user interface, and to the
communication ports.The MIM coordinates the initial power up of the
system, transfers it into and out of bypass mode, transfers the power
source between the mains AC power, and the battery source, and coordinates shutdown operations.
System Status Monitoring - The MIM gathers data about the system
components and delivers it to both the PowerView interface, and to the
computer interface ports. System status monitoring and reporting data
include the current predicted run time, the status of individual battery
and power modules, the input & output voltage, input & output voltage
frequency, and the size and status of the output load.
Alarm Condition Detection - The control/user interface system monitors the Symmetra for alarm conditions. If an alarm condition is
detected, the PowerView user interface initiates an audible and visual
alarm. Alarm conditions include on-battery, low battery, module faults,
overloads, loss of redundancy and a variety of other default and user
defined events. All possible alarm messages and the appropriate user
responses are provided in later chapters.
Operating Modes
The Power Array functions in one of four operating modes, depending
on user commands, the status of the AC mains utility voltage, and the
condition of the Symmetra itself. The four modes are Load-Disconnect,
On-Line, On-Battery, and Bypass. Each is explained below. The PowerView interface on the Symmetra reports the current operating mode.
Operating Modes
Page 7 of 14
Load-Disconnect Mode
In the load-disconnect mode, incoming mains (utility) power is present
and the system is internally powered, but no output power is delivered
to the load equipment. The Symmetra enters the load-disconnect mode
at the initial power up when the system enable switch is switched to the
.on. position. When the system is operating on-line, and the .load off.
command is entered in the PowerView interface, it returns to the loaddisconnect mode. The figure below illustrates power flow.
Load-Disconnect Mode
Page 8 of 14
Chapter 1: WS_FTP and Symmetra
Online Operating Mode
The on-line operating mode is the .normal. operating mode. When the
system is in the on-line operating mode, the Power Array receives AC
mains (utility) power and delivers conditioned power to the load
equipment. The Power Array maintains proper battery charge, regulates
the output voltage and frequency, and protects the load from surges and
electrical noise. Symmetra will operate in this mode if it has been set to
turn the load on, the incoming utility voltage is present and functioning
properly, and there are no abnormal conditions preventing such as an
overload. See the illustration below for a diagram of the power flow
when the system is in the online operating mode.
On-line Operating Mode
Operating Modes
Page 9 of 14
On-Battery Operating Mode
When in the on-battery mode, the Power Array draws DC power from
the battery source, converts it to conditioned AC power and delivers it
to the load equipment. Symmetra typically enters this mode in the event
of a mains (utility) power failure. It will also operate in the on-battery
mode during a user initiated battery self test.
On-battery operation is limited in duration and is dependent on the
number of battery modules, their state of charge, and the size of the
load. Symmetra will remain in the on-battery state until either the
incoming utility power is restored or the batteries are depleted. See the
diagram below to understand the power flow when the system is in the
on-battery mode.
On-Battery Operating Mode
Page 10 of 14
Chapter 1: WS_FTP and Symmetra
Bypass Operating Mode
When the Symmetra is in the bypass operating mode, the system is
bypassed and utility power is delivered directly to the load. Symmetra
is equipped with an automatic bypass function. It is automatically
activated when AC mains power is present, but the load cannot be
powered by the inverter. Events which may cause this include
overloads and failed non-redundant power modules. The Symmetra
automatically returns to the on-line operating mode when the triggering
event clears. A manual maintenance bypass switch at the back of the
frame allows a user to manually bypass the system. The illustration
below shows power flow when the system is in the bypass mode.
Bypass Operating Mode
Operating Modes
Page 11 of 14
Definitions
The following terms are used in this manual. Review these definitions
for a better understanding of your new Symmetra system:
Term
Definition
Redundancy
Indicates the presence of one or more extra power mod-
ules which allow the system to sustain a fault and still
provide protection to the load. To be fully redundant,
the system should be configured with a redundant
intelligence module, and at least one redundant power
module.
Note: The number of battery modules determines the
length of the run time. While it is prudent to use the
maximum number of battery modules possible, they
are not considered redundant.
N+1 Redundancy
Refers to the level of power module redundancy.
“N” represents the number of power modules required
to power the load, and +1, +2, etc.. represents the
number of extra power modules that are present.
For example, a 7.3 kVA load requires two power modules for adequate protection. If the Symmetra is configured with only two modules, it has an .N+0,. level of
redundancy. (No redundancy). If the system is configured with three power modules, it has an .N+1. redundancy. Depending on the size of the load, Symmetra
can be configured with 2, 3 or even 4 extra power modules. Respectively, it would have an N+2, N+3, or
N+4 level of redundancy.
Capacity
The maximum amount of output power that a Symmetra system can deliver. The capacity is limited by the
lesser of the frame size and the capacity of the
installed power modules.
As an example, a MiniFrame (8kVA) with one power
module installed (4kVA) has a system capacity of
4kVA. A MasterFrame (16kVA) with five power modules (20kVA) has a system capacity of 16kVA.
Hot-swappable
All of the Symmetra modules are hot-swappable. This
means they can be replaced safely by a user or service
provider while clean uninterpretable power continues to
be delivered to the load. Servicing the module requires
no downtime. Your datacenter remains powered and
fully protected while the module is being replaced.
Page 12 of 14
Chapter 1: WS_FTP and Symmetra
Operating Modes
Page 13 of 14
Page 14 of 14
Chapter 1: WS_FTP and Symmetra
Chapter 2: WS_FTP and Symmetra
In This Chapter:
• WS_FTP Pro for Windows
• Symmetra Overview
• Operating Modes
WS_FTP Pro for Windows
These instructions were written to familiarize nonspecialists and executives with WS_FTP Pro.
The following instructions introduce you to WS_FTP Pro, a shareware
program that enables you to upload and download files on the Internet,
and then shows you how to perform basic tasks. To understand these
instructions, you need an Internet account and basic familiarity with
Microsoft Windows.
Local files
Server files
Page 16 of 28
Chapter 2: WS_FTP and Symmetra
What Is WS_FTP Pro?
WS_FTP Pro is a program that allows you to send (upload) and receive
(download) files on the Internet. WS_FTP Pro can be used for uploading personal web pages and downloading software.
Because FTP (File Transfer Protocol) can handle large files, using the
WS_FTP Pro program is also a more reliable way to transfer files than
using email attachments.
How to Use WS_FTP Pro
Click on your Start menu, select Programs, then WS_FTP Pro. The
WS_FTP Pro application launches on your system. You will use this to
connect to your web server, and drag files from the left screen area that
lists files on your local drives (and looks similar to Windows Explorer),
to the right area, that shows files on the remote server.
How to Connect to an FTP Site.
Before you can transfer files to or from an FTP site, you must first connect to the site.
1. Open a web browser.
2. Open this URL: www.foobar.com
3. Register in the site, and then view the tutorial videos beginning
with “Using WS_FTP Interface to upload files to a web server.
[Numbered]
Symmetra Overview
Page 17 of 28
Symmetra Overview
The Symmetra is a high-performance, uninterpretable power array system that is designed for large-scale loads. It provides conditioned, reliable AC power to load equipment, and provides protection from power
blackouts, brownouts, swells, sags, surges, and interference. The Symmetra Power Array system is comprised of either a MiniFrame, or a
MasterFrame, and a variable set of hot swappable modules. A MiniFrame system can be configured to deliver a maximum output of
8kVA, and a MasterFrame system can deliver a maximum of 16kVA.
The computer system that manages the system and provides system
notifications, the power processing components, and the batteries
themselves are all designed as stand alone modules. If one should fail,
it can easily be replaced by an onsite technician without interrupting
the flow of power to the datacenter.
MiniFrame
MasterFrame
Page 18 of 28
Chapter 2: WS_FTP and Symmetra
Theory of Operation
The Symmetra Power Array is comprised of three functional components: A power processing system, a battery source, and a control/user
interface system. The relationship of these functional components is
illustrated below.
Symmetra Overview
Power Processing System
The power processing system delivers conditioned AC output power
with a low distortion sinewave. Under normal operating conditions,
power is received from the AC mains (utility) power source, conditioned by the power processing system, and delivered to the load equipment. In the event of an AC mains power source failure, the power
processing system receives power from the battery source (battery
modules), converts it to conditioned AC, and delivers it to the load
equipment. When AC mains power is present, the power processing
system also maintains the battery source at full charge. The power processing system in a Symmetra is comprised of one or more power modules. Each power module contains the electronic components for a
complete 4kVA UPS, including the rectifier, charger and inverter.
When two or more power modules are present, they operate in parallel,
sharing the load equally.
By configuring the system with at least one more power module than is
required to power the load (a redundant power module), Symmetra can
sustain a power module failure and still deliver full power to the load
equipment. The failed module is identified by the control/user interface
system, an alarm is initiated to notify the user of the module failure,
and the hot-swappable module can be replaced by the user, without the
need to power down the load equipment.
A Symmetra MiniFrame provides bays for up to three power modules,
and a MasterFrame provides bays for up to five. This provides the full
system capacity (8kVA and 16kVA respectively), plus one redundant
power module.
Battery Source
The battery source is comprised of parallel, hot-swappable, 120V battery modules. These are housed in the Symmetra frame, and in an
optional XR Extension Battery frame. A Symmetra MiniFrame provides bays for up to two battery modules and a MasterFrame provides
bays for up to four. Both of these frames can be connected to an XR
Extension Battery frame. Additional battery modules increase onbattery run time.
Page 19 of 28
Page 20 of 28
Chapter 2: WS_FTP and Symmetra
Control/User Interface
The control/user interface system coordinates the operation of the Symmetra and reports status conditions via several user interface options.
Functions performed by the control user interface component include
module coordination and state control, analysis and reporting of system
status, and reporting of alarm conditions.
Module Coordinations & State Control - The Symmetra incorporates
a main intelligence module (MIM) that continuously monitors the system, and delivers data to both the PowerView user interface, and to the
communication ports.The MIM coordinates the initial power up of the
system, transfers it into and out of bypass mode, transfers the power
source between the mains AC power, and the battery source, and coordinates shutdown operations.
System Status Monitoring - The MIM gathers data about the system
components and delivers it to both the PowerView interface, and to the
computer interface ports. System status monitoring and reporting data
include the current predicted run time, the status of individual battery
and power modules, the input & output voltage, input & output voltage
frequency, and the size and status of the output load.
Alarm Condition Detection - The control/user interface system monitors the Symmetra for alarm conditions. If an alarm condition is
detected, the PowerView user interface initiates an audible and visual
alarm. Alarm conditions include on-battery, low battery, module faults,
overloads, loss of redundancy and a variety of other default and user
defined events. All possible alarm messages and the appropriate user
responses are provided in later chapters.
Operating Modes
The Power Array functions in one of four operating modes, depending
on user commands, the status of the AC mains utility voltage, and the
condition of the Symmetra itself. The four modes are Load-Disconnect,
On-Line, On-Battery, and Bypass. Each is explained below. The PowerView interface on the Symmetra reports the current operating mode.
Operating Modes
Page 21 of 28
Load-Disconnect Mode
In the load-disconnect mode, incoming mains (utility) power is present
and the system is internally powered, but no output power is delivered
to the load equipment. The Symmetra enters the load-disconnect mode
at the initial power up when the system enable switch is switched to the
.on. position. When the system is operating on-line, and the .load off.
command is entered in the PowerView interface, it returns to the loaddisconnect mode. The figure below illustrates power flow.
Load-Disconnect Mode
Page 22 of 28
Chapter 2: WS_FTP and Symmetra
Online Operating Mode
The on-line operating mode is the .normal. operating mode. When the
system is in the on-line operating mode, the Power Array receives AC
mains (utility) power and delivers conditioned power to the load
equipment. The Power Array maintains proper battery charge, regulates
the output voltage and frequency, and protects the load from surges and
electrical noise. Symmetra will operate in this mode if it has been set to
turn the load on, the incoming utility voltage is present and functioning
properly, and there are no abnormal conditions preventing such as an
overload. See the illustration below for a diagram of the power flow
when the system is in the online operating mode.
On-line Operating Mode
Operating Modes
Page 23 of 28
On-Battery Operating Mode
When in the on-battery mode, the Power Array draws DC power from
the battery source, converts it to conditioned AC power and delivers it
to the load equipment. Symmetra typically enters this mode in the event
of a mains (utility) power failure. It will also operate in the on-battery
mode during a user initiated battery self test.
On-battery operation is limited in duration and is dependent on the
number of battery modules, their state of charge, and the size of the
load. Symmetra will remain in the on-battery state until either the
incoming utility power is restored or the batteries are depleted. See the
diagram below to understand the power flow when the system is in the
on-battery mode.
On-Battery Operating Mode
Page 24 of 28
Chapter 2: WS_FTP and Symmetra
Bypass Operating Mode
When the Symmetra is in the bypass operating mode, the system is
bypassed and utility power is delivered directly to the load. Symmetra
is equipped with an automatic bypass function. It is automatically
activated when AC mains power is present, but the load cannot be
powered by the inverter. Events which may cause this include
overloads and failed non-redundant power modules. The Symmetra
automatically returns to the on-line operating mode when the triggering
event clears. A manual maintenance bypass switch at the back of the
frame allows a user to manually bypass the system. The illustration
below shows power flow when the system is in the bypass mode.
Bypass Operating Mode
Operating Modes
Page 25 of 28
Definitions
The following terms are used in this manual. Review these definitions
for a better understanding of your new Symmetra system:
Term
Definition
Redundancy
Indicates the presence of one or more extra power mod-
ules which allow the system to sustain a fault and still
provide protection to the load. To be fully redundant,
the system should be configured with a redundant
intelligence module, and at least one redundant power
module.
Note: The number of battery modules determines the
length of the run time. While it is prudent to use the
maximum number of battery modules possible, they
are not considered redundant.
N+1 Redundancy
Refers to the level of power module redundancy.
“N” represents the number of power modules required
to power the load, and +1, +2, etc.. represents the
number of extra power modules that are present.
For example, a 7.3 kVA load requires two power modules for adequate protection. If the Symmetra is configured with only two modules, it has an .N+0,. level of
redundancy. (No redundancy). If the system is configured with three power modules, it has an .N+1. redundancy. Depending on the size of the load, Symmetra
can be configured with 2, 3 or even 4 extra power modules. Respectively, it would have an N+2, N+3, or
N+4 level of redundancy.
Capacity
The maximum amount of output power that a Symmetra system can deliver. The capacity is limited by the
lesser of the frame size and the capacity of the
installed power modules.
As an example, a MiniFrame (8kVA) with one power
module installed (4kVA) has a system capacity of
4kVA. A MasterFrame (16kVA) with five power modules (20kVA) has a system capacity of 16kVA.
Hot-swappable
All of the Symmetra modules are hot-swappable. This
means they can be replaced safely by a user or service
provider while clean uninterpretable power continues to
be delivered to the load. Servicing the module requires
no downtime. Your datacenter remains powered and
fully protected while the module is being replaced.
Page 26 of 28
Chapter 2: WS_FTP and Symmetra
Operating Modes
Page 27 of 28
Page 28 of 28
Chapter 2: WS_FTP and Symmetra
Chapter 3: WS_FTP and Symmetra
In This Chapter:
• WS_FTP Pro for Windows
• Symmetra Overview
• Operating Modes
WS_FTP Pro for Windows
These instructions were written to familiarize nonspecialists and executives with WS_FTP Pro.
The following instructions introduce you to WS_FTP Pro, a shareware
program that enables you to upload and download files on the Internet,
and then shows you how to perform basic tasks. To understand these
instructions, you need an Internet account and basic familiarity with
Microsoft Windows.
Local files
Server files
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Chapter 3: WS_FTP and Symmetra
What Is WS_FTP Pro?
WS_FTP Pro is a program that allows you to send (upload) and receive
(download) files on the Internet. WS_FTP Pro can be used for uploading personal web pages and downloading software.
Because FTP (File Transfer Protocol) can handle large files, using the
WS_FTP Pro program is also a more reliable way to transfer files than
using email attachments.
How to Use WS_FTP Pro
Click on your Start menu, select Programs, then WS_FTP Pro. The
WS_FTP Pro application launches on your system. You will use this to
connect to your web server, and drag files from the left screen area that
lists files on your local drives (and looks similar to Windows Explorer),
to the right area, that shows files on the remote server.
How to Connect to an FTP Site.
Before you can transfer files to or from an FTP site, you must first connect to the site.
1. Open a web browser.
2. Open this URL: www.foobar.com
3. Register in the site, and then view the tutorial videos beginning
with “Using WS_FTP Interface to upload files to a web server.
[Numbered]
Symmetra Overview
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Symmetra Overview
The Symmetra is a high-performance, uninterpretable power array system that is designed for large-scale loads. It provides conditioned, reliable AC power to load equipment, and provides protection from power
blackouts, brownouts, swells, sags, surges, and interference. The Symmetra Power Array system is comprised of either a MiniFrame, or a
MasterFrame, and a variable set of hot swappable modules. A MiniFrame system can be configured to deliver a maximum output of
8kVA, and a MasterFrame system can deliver a maximum of 16kVA.
The computer system that manages the system and provides system
notifications, the power processing components, and the batteries
themselves are all designed as stand alone modules. If one should fail,
it can easily be replaced by an onsite technician without interrupting
the flow of power to the datacenter.
MiniFrame
MasterFrame
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Chapter 3: WS_FTP and Symmetra
Theory of Operation
The Symmetra Power Array is comprised of three functional components: A power processing system, a battery source, and a control/user
interface system. The relationship of these functional components is
illustrated below.
Symmetra Overview
Power Processing System
The power processing system delivers conditioned AC output power
with a low distortion sinewave. Under normal operating conditions,
power is received from the AC mains (utility) power source, conditioned by the power processing system, and delivered to the load equipment. In the event of an AC mains power source failure, the power
processing system receives power from the battery source (battery
modules), converts it to conditioned AC, and delivers it to the load
equipment. When AC mains power is present, the power processing
system also maintains the battery source at full charge. The power processing system in a Symmetra is comprised of one or more power modules. Each power module contains the electronic components for a
complete 4kVA UPS, including the rectifier, charger and inverter.
When two or more power modules are present, they operate in parallel,
sharing the load equally.
By configuring the system with at least one more power module than is
required to power the load (a redundant power module), Symmetra can
sustain a power module failure and still deliver full power to the load
equipment. The failed module is identified by the control/user interface
system, an alarm is initiated to notify the user of the module failure,
and the hot-swappable module can be replaced by the user, without the
need to power down the load equipment.
A Symmetra MiniFrame provides bays for up to three power modules,
and a MasterFrame provides bays for up to five. This provides the full
system capacity (8kVA and 16kVA respectively), plus one redundant
power module.
Battery Source
The battery source is comprised of parallel, hot-swappable, 120V battery modules. These are housed in the Symmetra frame, and in an
optional XR Extension Battery frame. A Symmetra MiniFrame provides bays for up to two battery modules and a MasterFrame provides
bays for up to four. Both of these frames can be connected to an XR
Extension Battery frame. Additional battery modules increase onbattery run time.
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Chapter 3: WS_FTP and Symmetra
Control/User Interface
The control/user interface system coordinates the operation of the Symmetra and reports status conditions via several user interface options.
Functions performed by the control user interface component include
module coordination and state control, analysis and reporting of system
status, and reporting of alarm conditions.
Module Coordinations & State Control - The Symmetra incorporates
a main intelligence module (MIM) that continuously monitors the system, and delivers data to both the PowerView user interface, and to the
communication ports.The MIM coordinates the initial power up of the
system, transfers it into and out of bypass mode, transfers the power
source between the mains AC power, and the battery source, and coordinates shutdown operations.
System Status Monitoring - The MIM gathers data about the system
components and delivers it to both the PowerView interface, and to the
computer interface ports. System status monitoring and reporting data
include the current predicted run time, the status of individual battery
and power modules, the input & output voltage, input & output voltage
frequency, and the size and status of the output load.
Alarm Condition Detection - The control/user interface system monitors the Symmetra for alarm conditions. If an alarm condition is
detected, the PowerView user interface initiates an audible and visual
alarm. Alarm conditions include on-battery, low battery, module faults,
overloads, loss of redundancy and a variety of other default and user
defined events. All possible alarm messages and the appropriate user
responses are provided in later chapters.
Operating Modes
The Power Array functions in one of four operating modes, depending
on user commands, the status of the AC mains utility voltage, and the
condition of the Symmetra itself. The four modes are Load-Disconnect,
On-Line, On-Battery, and Bypass. Each is explained below. The PowerView interface on the Symmetra reports the current operating mode.
Operating Modes
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Load-Disconnect Mode
In the load-disconnect mode, incoming mains (utility) power is present
and the system is internally powered, but no output power is delivered
to the load equipment. The Symmetra enters the load-disconnect mode
at the initial power up when the system enable switch is switched to the
.on. position. When the system is operating on-line, and the .load off.
command is entered in the PowerView interface, it returns to the loaddisconnect mode. The figure below illustrates power flow.
Load-Disconnect Mode
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Chapter 3: WS_FTP and Symmetra
Online Operating Mode
The on-line operating mode is the .normal. operating mode. When the
system is in the on-line operating mode, the Power Array receives AC
mains (utility) power and delivers conditioned power to the load
equipment. The Power Array maintains proper battery charge, regulates
the output voltage and frequency, and protects the load from surges and
electrical noise. Symmetra will operate in this mode if it has been set to
turn the load on, the incoming utility voltage is present and functioning
properly, and there are no abnormal conditions preventing such as an
overload. See the illustration below for a diagram of the power flow
when the system is in the online operating mode.
On-line Operating Mode
Operating Modes
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On-Battery Operating Mode
When in the on-battery mode, the Power Array draws DC power from
the battery source, converts it to conditioned AC power and delivers it
to the load equipment. Symmetra typically enters this mode in the event
of a mains (utility) power failure. It will also operate in the on-battery
mode during a user initiated battery self test.
On-battery operation is limited in duration and is dependent on the
number of battery modules, their state of charge, and the size of the
load. Symmetra will remain in the on-battery state until either the
incoming utility power is restored or the batteries are depleted. See the
diagram below to understand the power flow when the system is in the
on-battery mode.
On-Battery Operating Mode
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Chapter 3: WS_FTP and Symmetra
Bypass Operating Mode
When the Symmetra is in the bypass operating mode, the system is
bypassed and utility power is delivered directly to the load. Symmetra
is equipped with an automatic bypass function. It is automatically
activated when AC mains power is present, but the load cannot be
powered by the inverter. Events which may cause this include
overloads and failed non-redundant power modules. The Symmetra
automatically returns to the on-line operating mode when the triggering
event clears. A manual maintenance bypass switch at the back of the
frame allows a user to manually bypass the system. The illustration
below shows power flow when the system is in the bypass mode.
Bypass Operating Mode
Operating Modes
Page 39 of 42
Definitions
The following terms are used in this manual. Review these definitions
for a better understanding of your new Symmetra system:
Term
Definition
Redundancy
Indicates the presence of one or more extra power mod-
ules which allow the system to sustain a fault and still
provide protection to the load. To be fully redundant,
the system should be configured with a redundant
intelligence module, and at least one redundant power
module.
Note: The number of battery modules determines the
length of the run time. While it is prudent to use the
maximum number of battery modules possible, they
are not considered redundant.
N+1 Redundancy
Refers to the level of power module redundancy.
“N” represents the number of power modules required
to power the load, and +1, +2, etc.. represents the
number of extra power modules that are present.
For example, a 7.3 kVA load requires two power modules for adequate protection. If the Symmetra is configured with only two modules, it has an .N+0,. level of
redundancy. (No redundancy). If the system is configured with three power modules, it has an .N+1. redundancy. Depending on the size of the load, Symmetra
can be configured with 2, 3 or even 4 extra power modules. Respectively, it would have an N+2, N+3, or
N+4 level of redundancy.
Capacity
The maximum amount of output power that a Symmetra system can deliver. The capacity is limited by the
lesser of the frame size and the capacity of the
installed power modules.
As an example, a MiniFrame (8kVA) with one power
module installed (4kVA) has a system capacity of
4kVA. A MasterFrame (16kVA) with five power modules (20kVA) has a system capacity of 16kVA.
Hot-swappable
All of the Symmetra modules are hot-swappable. This
means they can be replaced safely by a user or service
provider while clean uninterpretable power continues to
be delivered to the load. Servicing the module requires
no downtime. Your datacenter remains powered and
fully protected while the module is being replaced.
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Chapter 3: WS_FTP and Symmetra
Operating Modes
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Chapter 3: WS_FTP and Symmetra
I
INDEX
interface 6, 20, 34
L
A
AC mains 5, 8, 10, 19, 22, 24, 33, 36,
38
alarm condition 6, 20, 34
B
battery module 11, 25, 39
battery modules 5, 19, 33
battery source 4, 18, 32
bypass operating mode 10, 24, 38
bypass switch 10, 24, 38
C
Load 6, 20, 34
load-disconnect mode 6, 7, 20, 21,
34, 35
M
main intelligence module 6, 20, 34
manual maintenance bypass switch
10, 24, 38
MasterFrame 3, 17, 31
MiniFrame 3, 17, 31
module, coordination 6, 20, 34
O
on-battery operating mode 6, 9, 20,
23, 34, 37
on-line operating mode 6, 8, 20, 22,
34, 36
operating modes 6, 20, 34
capacity 11, 25, 39
D
datacenter 3, 11, 17, 25, 31, 39
P
E
F
power modules 5, 19, 33
power processing system 4, 18, 32
PowerView interface 6, 20, 34
FTP Site 2, 16, 30
R
H
redundancy 11, 25, 39
electronic components 5, 19, 33
hot-swappable 11, 25, 39
i
Index
S
sinewave 5, 19, 33
state control 6, 20, 34
Symmetra, overview 3, 17, 31
system status monitoring 6, 20, 34
U
user interface 4, 18, 32
utility power 7, 21, 35
W
WS_FTP Pro 1, 15, 29
WS_FTP, how to use 2, 16, 30
X
XR Extension Battery frame 5, 19, 33
ii