Mecer ME-1000-WTU User manual

USER MANUAL
ME-1000-WTU
ME-2000-WTU
ME-3000-WTU
Online UPS
Uninterruptible Power Supply System

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 panel view................................................................................................... 3
2-2. Setup the UPS ..................................................................................................... 3
3. Operations ..................................................................................................................... 5
3-1. Button operation.................................................................................................. 5
3-2. LCD Panel ........................................................................................................... 5
3-3. Audible Alarm...................................................................................................... 7
3-4. LCD display wordings index .................................................................................. 7
3-5. UPS Setting ......................................................................................................... 7
3-6. Operating Mode Description ............................................................................... 10
3-7. Faults Reference Code........................................................................................ 10
3-8. Warning indicator .............................................................................................. 11
4. Troubleshooting............................................................................................................ 12
5. Storage and Maintenance.............................................................................................. 14
6. Specifications ............................................................................................................... 15

1
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.

2
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.

3
2. Installation and setup
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.
2-1. Rear panel view
Tower Unit
1K (L)
2K (L)
3K(L)
1. AC input
2. Input circuit breaker
3. USB communication port
4. RS-232 communication port
5. SNMP intelligent slot
6. External battery connection
7. Output receptacles
8. Output circuit breaker
9. Output terminal
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. The power cord is supplied in the UPS package.
Step 2: UPS output connection
For socket-type outputs, simply connect devices to the outlets.
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 2.1mm2power cords.
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.

4
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.
Step 4: 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 5: 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 6: External battery connection
Follow the right chart to make external battery connection.

5
3. Operations
3-1. Button operation
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.
Up key: Press this button to display previous selection in UPS setting
mode.
Switch to UPS self-test mode: Press and hold ON/Mute button 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. 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.
Down 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.
3-2. LCD Panel

6
Display
Function
Remaining backup time information
Indicates the remaining backup time in pie chart.
Indicates the remaining backup time in numbers.
H: hours, M: minute, S: second
Fault information
Indicates that the warning and fault 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.
Output & Battery voltage information
Indicates the output voltage, frequency or battery voltage.
Vac: output voltage, Vdc: battery voltage, Hz: frequency
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.
Mode operation information
Indicates the UPS connects to the mains.
Indicates the battery is working.
Indicates the bypass circuit is working.
Indicates the ECO mode is enabled.
Indicates the Inverter circuit is working.
Indicates the output is working.
Battery information
Indicates the Battery level by 0-25%, 26-50%, 51-75%, and
76-100%.
Indicates the battery is fault.
Indicates low battery level and low battery voltage.
Input & Battery voltage information
Indicates the input voltage or frequency or battery voltage.
Vac: Input voltage, Vdc: battery voltage, Hz: input frequency

7
3-3. Audible Alarm
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
3-4. LCD display wordings index
Abbreviation
Display content
Meaning
ENA
Enable
DIS
Disable
ESC
Escape
HLS
High loss
LLS
Low loss
BAT
Battery
CF
Converter
TP
Temperature
CH
Charger
FU
Bypass frequency unstable
EE
EEPROM error
3-5. UPS Setting
There are three parameters to set up the
UPS.
Parameter 1: It’s for program
alternatives. Refer to below table.
Parameter 2 and parameter 3 are the
setting options or values for each
program.
01: Output voltage setting
Interface
Setting
Parameter 3: Output voltage
You may choose the following output voltage:
200: presents output voltage is 200Vac
208: presents output voltage is 208Vac
220: presents output voltage is 220Vac
230: presents output voltage is 230Vac (Default)
Parameter 1
Parameter 2
Parameter 3

8
240: presents output voltage is 240Vac
02: Frequency Converter enable/disable
Interface
Setting
Parameter 2 & 3: Enable or disable converter mode. You
may choose the following two options:
CF ENA: converter mode enable
CF DIS: converter mode disable(Default)
03: Output frequency setting
Interface
Setting
Parameter 2 & 3: 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
04: ECO enable/disable
Interface
Setting
Parameter 3: Enable or disable ECO function. You may
choose the following two options:
ENA: ECO mode enable
DIS: ECO mode disable (Default)
05: ECO voltage range setting
Interface
Setting
Parameter 2 & 3: Set the acceptable high voltage point
and low voltage point for ECO mode by pressing Down key
or Up key.
HLS: High loss voltage in ECO mode in parameter 2.
The setting range in parameter 3 is from +7V to +24V of
the nominal voltage. (Default: +12V)
LLS: Low loss voltage in ECO mode in parameter 2.
The setting range in parameter 3 is from -7V to -24V of the
nominal voltage. (Default: -12V)
06: Bypass enable/disable when UPS is off
Interface
Setting
Parameter 3: Enable or disable Bypass function. You may
choose the following two options:
ENA: Bypass enable
DIS: Bypass disable (Default)

9
07: Bypass voltage range setting
Interface
Setting
Parameter 2 & 3: Set the acceptable high voltage point
and acceptable low voltage point for Bypass mode by
pressing the Down key or Up key.
HLS: Bypass high voltage point
230-264: setting the high voltage point in parameter 3
from 230Vac to 264Vac. (Default: 264Vac)
LLS: Bypass low voltage point
170-220: setting the low voltage point in parameter 3
from 170Vac to 220Vac. (Default: 170Vac)
8: Autonomy limitation setting
Interface
Setting
Parameter 3: Set up backup time on battery mode for
general outlets.
0-999: setting the backup time in minutes from 0-999 for
general outlets on battery mode.
0: When setting as “0”, the backup time will be only 10
seconds.
999: When setting as “999”, the backup time setting will
be disabled. (Default)
00: Exit setting

10
3-6. Operating Mode Description
Operating mode
Description
LCD display
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 and no output supply
power, but still can charge batteries.
3-7. Faults Reference Code
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
Bus short
05
x
Over temperature
41
x
Inverter soft start fail
11
x
Over load
43
Inverter voltage high
12
x

11
3-8. Warning indicator
Warning
Icon (flashing)
Alarm
Low Battery
Sounding every second
Overload
Sounding twice every second
Battery is not connected
Sounding every second
Over Charge
Sounding every second
Over temperature
Sounding every second
Charger failure
Sounding every second
Battery fault
Sounding every second
Out of bypass voltage range
Sounding every second
Bypass frequency unstable
Sounding every second
EEPROM error
Sounding every second

12
4. Troubleshooting
If the UPS system does not operate correctly, please solve the problem by using the table below.
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 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.
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 01, 02, 03,
04, 05, 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

13
Symptom
Possible cause
Remedy
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.
Fault code is shown as 05 on LCD
display. At the same time, alarm is
continuously sounding and output
is cut off.
A UPS internal fault has
occurred and BUS is short
circuited.
Consult your dealer. If the
UPS power is on again
before repair, the DC/DC
mosfet will damage.

14
5. Storage and Maintenance
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:
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.

15
6. Specifications
MODEL
ME-1000-WTU
ME-2000-WTU
ME-3000-WTU
CAPACITY*
1000 VA / 800 W
2000 VA / 1600 W
3000 VA / 2400 W
INPUT
Voltage
Range
Low Line Transfer
160VAC/140VAC/120VAC/110VAC± 5%
( based on load percentage 100% - 80 % / 80 % - 70 % / 70 - 60 % / 60 % - 0)
Low Line Comeback
168VAC/148VAC/128VAC/118VAC ± 5 %
( based on load percentage 100% - 80 % / 80 % - 70 % / 70 - 60 % / 60 % - 0)
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 @ nominal voltage (input voltage)
OUTPUT
Output voltage
200/208/220/230/240VAC
AC Voltage Regulation
± 1% (Batt. Mode)
Frequency Range
(Synchronized Range)
47 ~ 53 Hz or 57 ~ 63 Hz
Frequency Range (Batt. Mode)
50 Hz ± 0.25 Hz or 60Hz ± 0.3 Hz
Overload
100%~110%:audible warning
110%~130%: UPS shuts down in 60 seconds at battery mode or transfer to
bypass 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)
Transfer
Time
AC Mode to Batt. Mode
Zero
Inverter to Bypass
4 ms (Typical)
Waveform (Batt. Mode)
Pure Sinewave
EFFICIENCY
AC Mode
87%
90%
Battery Mode
83%
87%
89%
BATTERY
Standard
Model
Battery Type
12 V / 9 AH
12 V / 7 AH
12 V / 7 AH
12 V / 9 AH
Numbers
2
3
6
8
6
8
Recharge Time
4 hours recover to 90% capacity (Typical)
Charging Current
1.0 A (max.)
Charging Voltage
27.3 VDC ±
1%
41.0VDC ±
1%
82.1 VDC
± 1%
109.4VDC
± 1%
82.1 VDC
±1%
109.4VDC
± 1%
Long-run
Model
Battery Type &Numbers
Depending on the capacity of external batteries
Charging Current
1.0A/2.0A/4.0A/6.0 A ±10%
Charging Voltage
27.3 VDC ±
1%
41.0VDC ±
1%
82.1 VDC
± 1%
109.4VDC
± 1%
82.1 VDC
± 1%
109.4VDC
± 1%
PHYSICAL
Dimension, D X W X H
397 X 145 X 220 (mm)
419 X 190 X 318 (mm)
Net Weight (kgs)
10
7
13
7
26
13
30.5
13
28
13
33
13
ENVIRONMENT
Operation Humidity
20-90 % RH @ 0- 40°C (non-condensing)
Noise Level
Less than 50dBA @ 1 Meter
MANAGEMENT
Smart RS-232 or USB
Supports Windows® 2000/2003/XP/Vista/2008/7, Linux, Unix and MAC
Optional SNMP
Power management from SNMP manager and web browser
* Derate capacity to 80% of capacity in Frequency converter mode or when the output voltage is adjusted to 208VAC/200VAC.
** Product specifications are subject to change without further notice.