Liebert GHT MT+ User Manual

Single Phase Online UPS

Liebert GXT MT+
User Manual - 1000-3000 VA

Table of Contents

1. Important Safety Warning………………………………………………

1

1-1. Transportation

1

1-2. Preparation

1

1-3. Installation

1

1-4. Operation

1

1-5. Maintenance, service and faults

2

2. Installation and setup……………………………………………………

3

2-1. Rear view

3

2-2. Setup the UPS

4

3. Operations…………………………………………………………………..

6

3-1. Button operation

6

3-2. LCD Panel

7

3-3. Audible Alarm

8

3-4. LCD display wordings index

8

3-5. UPS Setting

9

3-6. Operating Mode Description

12

3-7. Faults Reference Code

12

3-8. Warning indicator

13

4. Troubleshooting…………………………………………………………...

14

5. Storage and Maintenance……………………………………………….

16

6. Specifications………………………………………………………………

17

Appendix: UPS Installation Guide…………………………………………

18

1. Important Safety Warning

Please comply with all warnings and operating instructions in this manual strictly. Save this
manual properly and read carefully the following instructions before installing the unit. Do not
operate this unit before reading through all safety information and operating instructions carefully

1-1. Transportation

 Please transport the UPS system only in the original package to protect against shock

and impact.

1-2. Preparation

 Condensation may occur if the UPS system is moved directly from cold to warm

environment. The UPS system must be absolutely dry before being installed. Please
allow at least two hours for the UPS system to acclimate the environment.

 Do not install the UPS system near water or in moist environments.
 Do not install the UPS system where it would be exposed to direct sunlight or near

heater.

 Do not block ventilation holes in the UPS housing.

1-3. Installation

 Do not connect appliances or devices which would overload the UPS system (e.g. laser

printers) to the UPS output sockets.

 Place cables in such a way that no one can step on or trip over them.
 Do not connect domestic appliances such as hair dryers to UPS output sockets.
 The UPS can be operated by any individuals with no previous experience.
 Connect the UPS system only to an earthed shockproof outlet which must be easily

accessible and close to the UPS system.

 Please use only VDE-tested, CE-marked mains cable (e.g. the mains cable of your

computer) to connect the UPS system to the building wiring outlet (shockproof outlet).

 Please use only VDE-tested, CE-marked power cables to connect the loads to the UPS

system.

 When installing the equipment, it should ensure that the sum of the leakage current of

the UPS and the connected devices does not exceed 3.5mA.

1-4. Operation

 Do not disconnect the mains cable on the UPS system or the building wiring outlet

(shockproof socket outlet) during operations since this would cancel the protective
earthing of the UPS system and of all connected loads.

 The UPS system features its own, internal current source (batteries). The UPS output

sockets or output terminals block may be electrically live even if the UPS system is not
connected to the building wiring outlet.

 In order to fully disconnect the UPS system, first press the OFF/Enter button to

disconnect the mains.

 Prevent no fluids or other foreign objects from inside of the UPS system.

1

1-5. Maintenance, service and faults

 The UPS system operates with hazardous voltages. Repairs may be carried out only by

qualified maintenance personnel.

 Caution - risk of electric shock. Even after the unit is disconnected from the mains

(building wiring outlet), components inside the UPS system are still connected to the
battery and electrically live and dangerous.

 Before carrying out any kind of service and/or maintenance, disconnect the batteries

and verify that no current is present and no hazardous voltage exists in the terminals of
high capability capacitor such as BUS-capacitors.

 Only persons are adequately familiar with batteries and with the required precautionary

measures may replace batteries and supervise operations. Unauthorized persons must
be kept well away from the batteries.

 Caution - risk of electric shock. The battery circuit is not isolated from the input voltage.

Hazardous voltages may occur between the battery terminals and the ground. Before
touching, please verify that no voltage is present!

 Batteries may cause electric shock and have a high short-circuit current. Please take

the precautionary measures specified below and any other measures necessary when
working with batteries:

－remove wristwatches, rings and other metal objects
－use only tools with insulated grips and handles.

 When changing batteries, install the same number and same type of batteries.
 Do not attempt to dispose of batteries by burning them. This could cause battery

explosion.

 Do not open or destroy batteries. Escaping electrolyte can cause injury to the skin and

eyes. It may be toxic.

 Please replace the fuse only with the same type and amperage in order to avoid fire

hazards.

 Do not dismantle the UPS system.

2

2. Installation and Setup

Model

Type

Model

Type

1000

Standard

1000L

Long-run

2000

2000L

3000

3000L

1000(L) TOWER

2000(L) TOWER

3000(L) TOWER

1000(L) RACK

2000(L) RACK

3000(L) RACK

1. Programmable outlets: connect to non-critical
loads.

2. Output receptacles: connect to mission­critical loads.

3. AC input

4. Input circuit breaker

5. Network/Fax/Modem surge protection

6. Emergency power off function connector
(EPO)

7. USB communication port

8. RS-232 communication port

9. SNMP intelligent slot

10. External battery connection (only available
for L model)

11. Output terminal

12. Output circuit breaker

NOTE: Before installation, please inspect the unit. Be sure that nothing inside the package is
damaged. Please keep the original package in a safe place for future use.
NOTE: There are two different types of online UPS: standard and long-run models. Please refer
to the following model table.

2-1. Rear View

3

2-2. Setup the UPS
Step 1: UPS input connection

Plug the UPS into a two-pole, three-wire, grounded receptacle only. Avoid using extension cords.

 For 208/220/230/240VAC models: The power cord is supplied in the UPS package.
 For 110/115/120/127VAC models: The power cord is attached to the UPS. The input plug is a

NEMA 5-15P for 1000 and 1000L models, NEMA 5-20P for 2000 and 2000L models.
Note: For Low voltage models: Check if the site wiring fault indicator lights up in LCD panel. It will
be illuminated when the UPS is plugged into an improperly wired utility power outlet (Refer to
Troubleshooting section).

Step 2: UPS output connection

 For socket-type outputs, there two kinds of outputs: programmable outlets and general

outlets. Please connect non-critical devices to the programmable outlets and critical devices
to the general outlets. During power failure, you may extend the backup time to critical
devices by setting shorter backup time for non-critical devices.

 For terminal-type input or outputs, please follow below steps for the wiring configuration:

a) Remove the small cover of the terminal block
b) Suggest using AWG14 or 2.1mm2 power cords. Suggest using WG12-10 or

3.3mm2-5.3mm2 power cords for NEMA type.
c) Upon completion of the wiring configuration, please check whether the wires are securely

affixed.

d) Put the small cover back to the rear panel.

Step 3: Communication connection
Communication port:

USB port RS-232 port Intelligent slot

To allow for unattended UPS shutdown/start-up and status monitoring, connect the
communication cable one end to the USB/RS-232 port and the other to the communication port
of your PC. With the monitoring software installed, you can schedule UPS shutdown/start-up and
monitor UPS status through PC.

The UPS is equipped with intelligent slot perfect for either SNMP or AS400 card. When installing
either SNMP or AS400 card in the UPS, it will provide advanced communication and monitoring
options.

PS. USB port and RS-232 port can’t work at the same time.

4

Step 4: Network connection

Follow the right chart to make external battery
connection.

It’s in closed status for UPS

normal operation.

Network/Fax/Phone surge port

Connect a single modem/phone/fax line into surge-protected “IN” outlet on the back panel of the
UPS unit. Connect from “OUT” outlet to the equipment with another modem/fax/phone line cable.

Step 5: Disable and enable EPO function

Keep the pin 1 and pin 2 closed for UPS normal operation. To activate EPO function, cut the wire
between pin 1 and pin 2.

Step 6: Turn on the UPS

Press the ON/Mute button on the front panel for two seconds to power on the UPS.

Note: The battery charges fully during the first five hours of normal operation. Do not expect
full battery run capability during this initial charge period.

Step 7: Install software

For optimal computer system protection, install UPS monitoring software to fully configure UPS
shutdown. You may insert provided CD into CD-ROM to install the monitoring software. If not,
please follow steps below to download and install monitoring software from the internet:

1. Go to the website http://www.power-software-download.com

2. Click ViewPower software icon and then choose your required OS to download the software.

3. Follow the on-screen instructions to install the software.

4. When your computer restarts, the monitoring software will appear as an orange plug icon
located in the system tray, near the clock.

Step 8: External battery connection (for long-run models only)

5

3. Operating Instruction

Button

Function

ON/MUTE Button

 Turn on the UPS: Press and hold ON/MUTE button for at least 2

seconds to turn on the UPS.

 Mute the alarm: When the UPS is on battery mode, press and hold this

button for at least 5 seconds to disable or enable the alarm system. But
it’s not applied to the situations when warnings or errors occur.

 Down key: Press this button to display previous selection in UPS

setting mode.

 Switch to UPS self-test mode: Press ON/MUTE buttons simultaneously

for 5 seconds to enter UPS self-testing while in AC mode, ECO mode,
or converter mode.

OFF/ENTER

Button

 Turn off the UPS: Press and hold this button at least 2 seconds to turn

off the UPS in battery mode. UPS will be in standby mode under power
normal or transfer to Bypass mode if the Bypass enable setting by
pressing this button.

 Confirm selection key: Press this button to confirm selection in UPS

setting mode.

SELECT Button

 Switch LCD message: Press this button to change the LCD message

for input voltage, input frequency, battery voltage, output voltage and
output frequency. It will return back to default display when pausing for
10 seconds.

 Setting mode: Press and hold this button for 5 seconds to enter UPS

setting mode when UPS is in standby mode or bypass mode.

 Up key: Press this button to display next selection in UPS setting mode.

ON/MUTE +

SELECT Button

 Switch to bypass mode: When the main power is normal, press

ON/MUTE and SELECT buttons simultaneously for 5 seconds. Then
UPS will enter to bypass mode. This action will be ineffective when the
input voltage is out of acceptable range.

3-1. Button operation

Button View

6

3-2. LCD Display

Display

Function

Backup time setting and information

Indicates the backup time in pie chart.

Indicates the backup time in numbers.

H: hours, M: minute, S: second

Setting operation

Indicates the setting operation.

Fault & warning information

Indicates that the warning situation occurs.

Indicates the warning and fault codes, and the codes are listed in
details in 3-5 section.

Mute operation

Indicates that the UPS alarm is disabled.

UPS information

Indicates the input and output voltage, frequency, battery voltage,
load information, and internal temperature.

Vac: input/output voltage, Vdc: battery voltage, Hz: frequency, %: load level,
°C/°F: temperature,

Load information

Indicates the load level by 0-25%, 26-50%, 51-75%, and 76-100%.
Indicates overload.

Indicates the load or the UPS output is short circuit.

Programmable outlets information

Indicates that programmable management outlets are working.

Mode operation information

Indicates the UPS is in online mode.

7

Indicates the UPS is in battery mode.
Indicates the UPS is bypass mode.

Indicates the UPS is in ECO mode.

Indicates the UPS is in converter mode.

Indicates the UPS is charging battery.

Battery information

Indicates the Battery capacity by 0-25%, 26-50%, 51-75%, and
76-100%.

Indicates the battery is fault.

Indicates low battery level and low battery voltage.

Battery Mode

Sounding every 4 seconds

Low Battery

Sounding every second

Overload

Sounding twice every second

Fault

Continuously sounding

Bypass Mode

Sounding every 10 seconds

LCD Area

Abbreviation

Display content

Meaning

ENA

Enable

DIS

Disable

ESC

Escape

B.L

Low battery

O.L

Overload

N.C

Battery is not connected

O.C

Overcharge

S.F

Site fault

C.H

Charger

E.P

EPO

F.A

Fan

B.V

Bypass voltage range

T.P

Temperature

B.F

Battery fault

3-3. Audible Alarm

3-4. LCD display wordings index

8

3-5. UPS Setting

There are two parameters to set up the
UPS.

Parameter 1: It’s for program
alternatives. There are 8 programs to
set up. Refer to below table.
Parameter 2 is the setting option or
value for each program.

Interface

Setting

Parameter 2: Output voltage setting

For 208/220/230/240 VAC models, you may choose the
following output voltage in parameter 2:

208: presents output voltage is 208Vac
220: presents output voltage is 220Vac
230: presents output voltage is 230Vac
240: presents output voltage is 240Vac

For 110/150/120/127 VAC models, you may choose the
following output voltage in parameter 2:

110: presents output voltage is 110Vac
115: presents output voltage is 115Vac
120: presents output voltage is 120Vac
127: presents output voltage is 127Vac

Interface

Setting

Parameter 2: Enable or disable converter mode. You may
choose the following two options:
CF ENA: converter mode enable
CF DIS: converter mode disable

Parameter 1

Parameter 2

 01: Output voltage setting

 02: Frequency Converter enable/disable

9

 03: Output frequency setting

Interface

Setting

Parameter 2: Output frequency setting.

You may set the initial frequency on battery mode:

BAT 50: presents output frequency is 50Hz
BAT 60: presents output frequency is 60Hz

If converter mode is enabled, you may choose the following
output frequency:

CF 50: presents output frequency is 50Hz
CF 60: presents output frequency is 60Hz

Interface

Setting

Parameter 2: Enable or disable ECO function. You may

choose the following two options:

ENA: ECO mode enable
DIS: ECO mode disable

Interface

Setting

Parameter 2: Enable or disable Bypass function when

UPS is off. You may choose the following two options:

ENA: Bypass enable
DIS: Bypass disable

Interface

Setting

Parameter 3: Enable or disable programmable outlets.
ENA: Programmable outlets enable
DIS: Programmable outlets disable

 04: ECO enable/disable

 05: Bypass enable/disable when UPS is off

 06: Programmable outlets enable/disable

10

 07: Programmable outlets setting

Interface

Setting

Parameter 3: Set up backup time limits for programmable

outlets.
0-999: setting the backup time limits in minutes from 0-999
for programmable outlets which connect to non-critical
devices on battery mode.

Interface

Setting

ESC: Exit the setting menu.

 00: Exit setting

11

3-6. Operating Mode Description

Operating
mode

Description

LCD display

Switch on

When pressing “ON/MUTE” button, if battery
voltage is within acceptable range, “ON” will
flash until the UPS is turned on.

Online mode

When the input voltage is within acceptable
range, UPS will provide pure and stable AC
power to output. The UPS will also charge the
battery at online mode.

ECO mode

Energy saving mode:
When the input voltage is within voltage
regulation range, UPS will bypass voltage to
output for energy saving.

Frequency
Converter mode

When input frequency is within 40 Hz to 70 Hz,
the UPS can be set at a constant output
frequency, 50 Hz or 60 Hz. The UPS will still
charge battery under this mode.

Battery mode

When the input voltage is beyond the
acceptable range or power failure and alarm is
sounding every 4 second, UPS will backup
power from battery.

Bypass mode

When input voltage is within acceptable range
but UPS is overload, UPS will enter bypass
mode or bypass mode can be set by front
panel. Alarm is sounding every 10 second.

Standby mode

UPS is powered off without output power, but
the battery still can be charged.

12

Fault mode

The UPS is in fault mode when no output power
is supplied from the UPS and the fault icon
flashes on the LCD display, although the
information of UPS can be displayed in the
screen.

Fault event

Fault code

Icon

Fault event

Fault code

Icon

Bus start fail

01 x Inverter voltage Low

13 x Bus over

02 x Inverter output short

14 Bus under

03 x Battery voltage too high

27 Bus unbalance

04 x Battery voltage too low

28 Inverter soft start fail

11 x Over temperature

41 x Inverter voltage high

12 x Over load

43

Warning

Indicator

Alarm

Word

Icon (flashing)

Low battery

B.L

Sounding every second

Overload

O.L

Sounding twice every second

Battery is not connected

N.C

Sounding every second

Overcharge

O.C

Sounding every second

Site wiring fault

S.F Sounding every second

EPO enable

E.P Sounding every second

Fan failure

F.A Sounding every second

Over temperature

T.P Sounding every second

Charger failure

C.H Sounding every second

Out of bypass voltage range

B.V

Sounding every second

Battery fault

B.F Sounding every second

3-7. Faults Reference Code

3-8. Warning indicator

13

4. Troubleshooting

Symptom

Possible cause

Remedy

No indication and alarm even
though the mains is normal.

The AC input power is not
connected well.

Check if input power cord
firmly connected to the
mains.

The AC input is connected
to the UPS output.

Plug AC input power cord to
AC input correctly.

The icon and the warning
code flashing on LCD

display and alarm is sounding
every second.

EPO function is activated.

Set the circuit in closed
position to disable EPO
function.

The icon and flashing
on LCD display and alarm is
sounding every second.

Line and neutral conductors
of UPS input are reversed.

Rotate mains power socket
by 180° and then connect to
UPS system.

The icon and flashing on
LCD display and alarm is sounding
every second.

The external or internal
battery is incorrectly
connected.

Check if all batteries are
connected well.

Fault code is shown as 27 and the
icon is lighting on LCD
display and alarm is continuously
sounding.

Battery voltage is too high
or the charger is fault.

Contact your dealer.

Fault code is shown as 28 and the
icon is lighting on LCD
display and alarm is continuously
sounding.

Battery voltage is too low or
the charger is fault.

Contact your dealer.

The icon and is
flashing on LCD display and alarm
is sounding twice every second.

UPS is overload

Remove excess loads from
UPS output.

UPS is overloaded.
Devices connected to the
UPS are fed directly by the
electrical network via the
Bypass.

Remove excess loads from
UPS output.

After repetitive overloads,
the UPS is locked in the
Bypass mode. Connected
devices are fed directly by
the mains.

Remove excess loads from
UPS output first. Then shut
down the UPS and restart it.

Fault code is shown as 43 and The
icon is lighting on LCD
display and alarm is continuously
sounding.

The UPS shut down
automatically because of
overload at the UPS output.

Remove excess loads from
UPS output and restart it.

If the UPS system does not operate correctly, please solve the problem by using the table below.

14

Fault code is shown as 14 and the
icon is lighting on LCD
display and alarm is continuously
sounding.

The UPS shut down
automatically because
short circuit occurs on the
UPS output.

Check output wiring and if
connected devices are in
short circuit status.

Fault code is shown as 1, 2, 3, 4,
11, 12, 13 and 41 on LCD display
and alarm is continuously
sounding.

A UPS internal fault has
occurred. There are two
possible results:

1. The load is still supplied,
but directly from AC power
via bypass.

2. The load is no longer
supplied by power.

Contact your dealer

Battery backup time is shorter than
nominal value

Batteries are not fully
charged

Charge the batteries for at
least 5 hours and then
check capacity. If the
problem still persists,
consult your dealer.

Batteries defect

Contact your dealer to
replace the battery.

The icon and the warning
code flashing on LCD

display and alarm is sounding
every second.

Fan is locked or not
working

Check fans and notify
dealer!!

15

5. Storage and Maintenance

Storage Temperature

Recharge Frequency

Charging Duration

-25°C - 40°C

Every 3 months

1-2 hours

40°C - 45°C

Every 2 months

1-2 hours

Be sure to deliver the spent battery to a recycling facility or ship it to your

dealer in the replacement battery packing material.

5-1. Operation

The UPS system contains no user-serviceable parts. If the battery service life (3~5 years at
25°C ambient temperature) has been exceeded, the batteries must be replaced. In this case,
please contact your dealer.

Storage

Before storing, charge the UPS 5 hours. Store the UPS covered and upright in a cool, dry
location. During storage, recharge the battery in accordance with the following table:

16

6. Specifications

CAPACITY*

1000 VA / 800 W

2000 VA / 1600 W

3000 VA / 2400 W

INPUT

Voltage
Range
Low Line Transfer

160 VAC / 140 VAC / 120 VAC / 110 VAC ± 5 %

( based on load percentage 100% - 80 % / 80 % - 70 % / 70 - 60 % / 60 % - 0)

Low Line Comeback

175 VAC ± 5 %

High Line Transfer

300 VAC ± 5 %

High Line Comeback

290 VAC ± 5 %

Frequency Range

40Hz ~ 70 Hz

Phase

Single phase with ground

Power Factor

≧ 0.99 @ 220-230 VAC (input voltage)

OUTPUT

Output voltage

208/220/230/240VAC

AC Voltage Regulation

± 3% (Batt. Mode)

Frequency Range

47 ~ 53 Hz or 57 ~ 63 Hz (Synchronized Range)

Frequency Range (Batt. Mode)

50 Hz ± 0.25 Hz

Overload

100%~110%: audible warning

110%-130%: UPS shuts down in 30 seconds at battery mode or transfers to

bypass mode when the utility is normal.

>130%: UPS shuts down immediately at battery mode or transfer to bypass

mode when the utility is normal.

Current Crest Ratio

3:1

Harmonic Distortion

≦ 3 % THD (Linear Load)

≦ 6 % THD (Non-linear Load)

≦ 4 % THD (Linear Load)

≦ 7 % THD (Non-linear Load)

Transfer
Time

AC Mode to Batt. Mode

Zero

Inverter to Bypass

4 ms (Typical)

Waveform (Batt. Mode)

Pure Sinewave

EFFICIENCY

AC Mode

~ 85%

~ 88%

Battery Mode

~ 83%

BATTERY

Standard
Model

Battery Type

12 V / 7 AH

12 V / 7 AH

12 V / 9 AH

Numbers 3 6

6

Recharge Time

4 hours recover to 90% capacity (Typical)

Charging Current

1.0 A(max.)

Charging Voltage

41.0 VDC ± 1%

82.1 VDC ±1%

Long-run
Model
Battery Type

12 V / 7 AH

12 V / 7 AH

12 V / 9 AH

Numbers 3 8

8

Charging Current

4.0 A or 8.0 A(max.)

Charging Voltage

41.0 VDC ± 1%

109.4 VDC ±1%

PHYSICAL

Tower
Case

Dimension, D X W X H

397 X 145 X 220 (mm)

421 X 190 X 318 (mm)

Net Weight (kgs)

13

7

26

13

28

13

Rack
Case

Dimension, D X W X H

420x438x88[2U] (mm)

580x438x133[3U] (mm)

Net Weight (kgs)

16

10

29

17

31

17

ENVIRONMENT

Operation Humidity

20-90 % RH @ 0- 40°C (non-condensing)

Noise Level

Less than 45dBA @ 1 Meter

MANAGEMENT

Smart RS-232 or USB

Supports Windows® 98/2000/2003/XP/Vista/2008, Windows® 7, Linux, and

MAC

Optional SNMP

Power management from SNMP manager and web browser

* Derate capacity to 60% of capacity in Frequency converter mode and to 80% when the output voltage is adjusted to 208VAC

17

Appendix: UPS Installation Guide

1. UPS should be placed on the flat and clean surface. Place it in an area away from

vibration, dust, humidity, high temperature, flammable liquids, gases, corrosive and

conductive contaminants. Install the UPS indoors in a clean environment, where it is

away from window and door. Maintain minimum clearance of 100mm in the bottom of

the UPS to avoid dust and high temperature.

2. Maintain an ambient temperature range of 0ºC to 45ºC for UPS optimal operation. For

every 5ºC above 45ºC, the UPS will derate 12% of nominal capacity at full load. The

highest working temperature requirement for UPS operation is 50ºC.

3. It’s required to maintain maximum altitude of 1000m to keep UPS normal operation at

full load UPS. If it’s used in high altitude area, please reduce connected load. Altitude

derating power with connected loads for UPS normal operation is listed as below:

4. Use supplied RS-232 or USB communication cable to connect RS-232/USB port of UPS

and RS-232/USB port of PC. After installing ViewPower in PC, it can remote monitor

UPS.

18

5. Place UPS:

Transfor

Transfor

It’s equipped with fan for cooling. Therefore, place the UPS in a well-ventilated area. It’s
required to maintain minimum clearance of 100mm in the front of the UPS and 300mm in
the back and two sides of the UPS for heat dissipation and easy-maintenance.

6. Connect To Transformer

Please do NOT connect transformer to output of the UPS. Otherwise, it will cause UPS
internal fault and force UPS to enter to fault mode. Please connect transformer to input of
the UPS.

7. Connect to External Battery Pack

When connecting external battery packs, please be sure to connect polarity correctly.

19

Connect positive pole of battery pack to positive pole of external battery connector in UPS
and negative pole of battery pack to negative pole of external battery connector in UPS.
Polarity misconnection will cause UPS internal fault. It’s recommended to add one breaker
between positive pole of battery pack and positive pole of external battery connector in
UPS to prevent damage to battery packs from internal fault.
The required specification of breaker: voltage ≧ 1.25 x battery voltage/set; current ≧ 50A
Please choose battery size and connected numbers according to backup time
requirement and UPS specifications.

To extend battery lifecycle, it’s recommended to use them in the temperature range of 15

ºC to 25 ºC.

20

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