USER’S MANUAL User Axpert MKS PLUS 1KVA 2KVA 3KVA 4KVA 5KVA
User Manual:
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Page Count: 40
1KVA-5KVA
INVERTER / CHARGER
Version: 2.3
User Manual
Table Of Contents
ABOUT THIS MANUAL ..................................................................................................................................... 1
Purpose ............................................................................................................................................................ 1
Scope ............................................................................................................................................................... 1
SAFETY INSTRUCTIONS .................................................................................................................................. 1
INTRODUCTION ............................................................................................................................................... 2
Features ........................................................................................................................................................... 2
Basic System Architecture ............................................................................................................................... 2
Product Overview ............................................................................................................................................. 3
INSTALLATION ................................................................................................................................................. 4
Unpacking and Inspection................................................................................................................................ 4
Preparation ...................................................................................................................................................... 4
Mounting the Unit ............................................................................................................................................. 4
Battery Connection .......................................................................................................................................... 5
AC Input/Output Connection ............................................................................................................................ 7
PV Connection ................................................................................................................................................. 8
Final Assembly ................................................................................................................................................. 9
Communication Connection ........................................................................................................................... 10
Dry Contact Signal ......................................................................................................................................... 10
OPERATION ..................................................................................................................................................... 11
Power ON/OFF .............................................................................................................................................. 11
Operation and Display Panel ......................................................................................................................... 11
LCD Display Icons ......................................................................................................................................... 12
LCD Setting .................................................................................................................................................... 14
Display Setting ............................................................................................................................................... 24
Operating Mode Description .......................................................................................................................... 27
Fault Reference Code .................................................................................................................................... 28
Warning Indicator ........................................................................................................................................... 29
EQUALIZATION (Only available for 4KVA/5KVA model) ....................................................................... 30
How to Equalization ....................................................................................................................................... 30
SPECIFICATIONS ........................................................................................................................................... 31
Table 1 Line Mode Specifications ................................................................................................................... 31
Table 2 Inverter Mode Specifications ............................................................................................................. 32
*4KVA/5KVA only supports 230VAC system. .................................................................................................. 32
Table 3 Charge Mode Specifications .............................................................................................................. 33
TROUBLE SHOOTING ..................................................................................................................................... 35
Appendix: Approximate Back-up Time Table ........................................................................................... 36
1
ABOUT THIS MANUAL
Purpose
This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read
this manual carefully before installations and operations. Keep this manual for future reference.
Scope
This manual provides safety and installation guidelines as well as information on tools and wiring.
SAFETY INSTRUCTIONS
WARNING: This chapter contains important safety and operating instructions. Read and
keep this manual for future reference.
1. Before using the unit, read all instructions and cautionary markings on the unit, the batteries and all
appropriate sections of this manual.
2. CAUTION --To reduce risk of injury, charge only deep-cycle lead acid type rechargeable batteries.
Other types of batteries may burst, causing personal injury and damage.
3. Do not disassemble the unit. Take it to a qualified service center when service or repair is required.
Incorrect re-assembly may result in a risk of electric shock or fire.
4. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning.
Turning off the unit will not reduce this risk.
5. CAUTION – Only qualified personnel can install this device with battery.
6. NEVER charge a frozen battery.
7. For optimum operation of this inverter/charger, please follow required spec to select appropriate cable
size. It’s very important to correctly operate this inverter/charger.
8. Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop
a tool to spark or short circuit batteries or other electrical parts and could cause an explosion.
9. Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please
refer to INSTALLATION section of this manual for the details.
10. Fuses (3 pieces of 40A, 32VDC for 1KVA, 4 pieces of 40A, 32VDC for 2KVA and 6 pieces for 3KVA, 1
piece of 200A, 58VDC for 4KVA and 5KVA) are provided as over-current protection for the battery
supply.
11. GROUNDING INSTRUCTIONS -This inverter/charger should be connected to a permanent grounded
wiring system. Be sure to comply with local requirements and regulation to install this inverter.
12. NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input
short circuits.
13. Warning!! Only qualified service persons are able to service this device. If errors still persist after
following troubleshooting table, please send this inverter/charger back to local dealer or service center
for maintenance.
2
INTRODUCTION
This is a multi-function inverter/charger, combining functions of inverter, MPPT solar charger and battery
charger to offer uninterruptible power support with portable size. Its comprehensive LCD display offers
user-configurable and easy-accessible button operation such as battery charging current, AC/solar charger
priority, and acceptable input voltage based on different applications.
Features
Pure sine wave inverter
Built-in MPPT solar charge controller
Configurable input voltage range for home appliances and personal computers via LCD setting
Configurable battery charging current based on applications via LCD setting
Configurable AC/Solar Charger priority via LCD setting
Compatible to mains voltage or generator power
Auto restart while AC is recovering
Overload/ Over temperature/ short circuit protection
Smart battery charger design for optimized battery performance
Cold start function
Basic System Architecture
The following illustration shows basic application for this inverter/charger. It also includes following devices to
have a complete running system:
Generator or Utility.
PV modules (option)
Consult with your system integrator for other possible system architectures depending on your requirements.
This inverter can power all kinds of appliances in home or office environment, including motor-type appliances
such as tube light, fan, refrigerator and air conditioner.
Figure 1 Hybrid Power System
3
Product Overview
1-3KVA model
1K-12V 230Vac model
NOTE: For parallel model installation and operation,
please check separate parallel installation guide for
the details.
1. LCD display
2. Status indicator
3. Charging indicator
4. Fault indicator
5. Function buttons
6. Power on/off switch
7. AC input
8. AC output
9. PV input
10. Battery input
11. Circuit breaker
12. RS232 communication port
13. Parallel communication cable (only for parallel model)
14. Current sharing cable (only for parallel model)
15. Dry contact
16. USB communication port
4KVA/5KVA single model
4KVA/5KVA parallel model
4
INSTALLATION
Unpacking and Inspection
Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should
have received the following items inside of package:
The unit x 1
User manual x 1
Communication cable x 1
Software CD x 1
Preparation
Before connecting all wirings, please take off bottom cover by removing two screws as shown below.
Mounting the Unit
Consider the following points before selecting where to install:
- Do not mount the inverter on flammable construction
materials.
- Mount on a solid surface
- Install this inverter at eye level in order to allow the LCD
display to be read at all times.
- The ambient temperature should be between 0°C and 55°C
to ensure optimal operation.
- The recommended installation position is to be adhered to
the wall vertically.
- Be sure to keep other objects and surfaces as shown in the
right diagram to guarantee sufficient heat dissipation and
to have enough space for removing wires.
SUITABLE FOR MOUNTING ON CONCRETE OR
OTHER NON-COMBUSTIBLE SURFACE ONLY.
5
Install the unit by screwing three screws. It’s recommended to use M4 or M5 screws.
1KVA 12V, 1-3KVA 24V,
1KVA/3KVA/4KVA/5KVA 48V model 2-3KVA 24V/48V Plus model
Battery Connection
CAUTION: For safety operation and regulation compliance, it’s requested to install a separate DC over-current
protector or disconnect device between battery and inverter. It may not be requested to have a disconnect
device in some applications, however, it’s still requested to have over-current protection installed. Please refer
to typical amperage in below table as required fuse or breaker size.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It's very important for system safety and efficient operation to use
appropriate cable for battery connection. To reduce risk of injury, please use the
proper recommended cable and terminal size as below.
Recommended battery cable and terminal size:
Model
Typical
Amperage
Battery
Capacity
Wire Size
Ring Terminal
Torque
Value
Cable
mm2
Dimensions
D (mm)
L (mm)
1KVA 48V
20A
100AH
1*14AWG
2
6.4
21.8
2~ 3 Nm
1KVA 24V, 2KVA 48V
33A
100AH
1*10AWG
5
6.4
22.5
2~ 3 Nm
3KVA 48V
50A
100AH
1*8AWG
8
6.4
23.8
2~ 3 Nm
1KVA 12V, 2KVA 24V
66A
100AH
1*6AWG
14
6.4
29.2
2~ 3 Nm
200AH
2*10AWG
8
6.4
23.8
3KVA 24V
100A
100AH
1*4AWG
22
6.4
33.2
2~ 3 Nm
200AH
2*8AWG
14
6.4
29.2
4KVA
120A
200AH
1*2AWG
38
6.4
39.2
2~ 3 Nm
2*6AWG
28
6.4
33.2
5KVA
120A
200AH
1*2AWG
38
6.4
39.2
2~ 3 Nm
2*6AWG
28
6.4
33.2
Ring terminal:
6
Please follow below steps to implement battery connection:
1. Assemble battery ring terminal based on recommended battery cable and terminal size.
2. Connect all battery packs as units requires. It’s suggested to connect at least 100Ah capacity battery for
1-3KVA model and at least 200Ah capacity battery for 4KVA/5KVA model.
3. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are
tightened with torque of 2-3 Nm. Make sure polarity at both the battery and the inverter/charge is correctly
connected and ring terminals are tightly screwed to the battery terminals.
WARNING: Shock Hazard
Installation must be performed with care due to high battery voltage in series.
CAUTION!! Do not place anything between the flat part of the inverter terminal and the ring
terminal. Otherwise, overheating may occur.
CAUTION!! Do not apply anti-oxidant substance on the terminals before terminals are
connected tightly.
CAUTION!! Before making the final DC connection or closing DC breaker/disconnector, be sure
positive (+) must be connected to positive (+) and negative (-) must be connected to negative
(-).
7
AC Input/Output Connection
CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between
inverter and AC input power source. This will ensure the inverter can be securely disconnected during
maintenance and fully protected from over current of AC input. The recommended spec of AC breaker is 10A
for 1KVA, 20A for 2KVA, 32A for 3KVA, 40A for 4KVA and 50A for 5KVA.
CAUTION!! There are two terminal blocks with “IN” and “OUT” markings. Please do NOT mis-connect input
and output connectors.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It’s very important for system safety and efficient operation to use appropriate cable for AC input
connection. To reduce risk of injury, please use the proper recommended cable size as below.
Suggested cable requirement for AC wires
Model
Gauge
Torque Value
1KVA
16 AWG
0.5~ 0.6 Nm
2KVA 230VAC
14 AWG
0.8~ 1.0 Nm
2KVA 120VAC
3KVA
12 AWG
1.2~ 1.6 Nm
4KVA
10 AWG
1.4~ 1.6Nm
5KVA
8 AWG
1.4~ 1.6Nm
Please follow below steps to implement AC input/output connection:
1. Before making AC input/output connection, be sure to open DC protector or disconnector first.
2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm.
3. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws. Be
sure to connect PE protective conductor ( ) first.
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue)
WARNING:
Be sure that AC power source is disconnected before attempting to hardwire it to the unit.
4. Then, insert AC output wires according to polarities indicated on terminal block and tighten terminal screws.
Be sure to connect PE protective conductor ( ) first.
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue)
8
5. Make sure the wires are securely connected.
PV Connection
CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter
and PV modules.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It'’ very important for system safety and efficient operation to use appropriate cable for PV module
connection. To reduce risk of injury, please use the proper recommended cable size as below.
Model
Typical Amperage
Cable Size
Torque
1KVA 12V
40A
10 AWG
1.2~1.6 Nm
1KVA 24V / 2KVA 24V/
3KVA 24V
25A
12 AWG
1.2~1.6 Nm
1KVA 48V / 3KVA 48V
18A
14 AWG
1.2~1.6 Nm
2KVA 24V Plus
3KVA 24V Plus
2KVA 48V Plus
3KVA 48V Plus
60A
8 AWG
1.4~1.6 Nm
4KVA / 5KVA
80A
6 AWG
1.4~1.6 Nm
CAUTION: Important
Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause
utility short-circuited when these inverters are worked in parallel operation.
CAUTION: Appliances such as air conditioner are required at least 2~3 minutes to restart because it’s required
to have enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and recovers in a
short time, it will cause damage to your connected appliances. To prevent this kind of damage, please check
manufacturer of air conditioner if it’s equipped with time-delay function before installation. Otherwise, this
inverter/charger will trig overload fault and cut off output to protect your appliance but sometimes it still causes
internal damage to the air conditioner.
9
PV Module Selection:
When selecting proper PV modules, please be sure to consider below parameters:
1. Open circuit Voltage (Voc) of PV modules not exceeds max. PV array open circuit voltage of inverter.
2. Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.
Solar Charging Mode
INVERTER MODEL
1KVA 12V
1KVA 24V
2KVA 24V
3KVA 24V
1KVA 48V
3KVA 48V
2KVA 24V Plus/
3KVA 24V Plus
2KVA 48V Plus/
3KVA 48V Plus/
4KVA/5KVA
Max. PV Array Open Circuit Voltage
102Vdc max
75Vdc max
102Vdc max
145Vdc
PV Array MPPT Voltage Range
15~80Vdc
30~66Vdc
60~88Vdc
30~115Vdc
60~115Vdc
Min. battery voltage for PV charge
8.5Vdc
17Vdc
34Vdc
17Vdc
34Vdc
Please follow below steps to implement PV module connection:
1. Remove insulation sleeve 10 mm for positive and negative conductors.
2. Check correct polarity of connection cable from PV modules and PV input
connectors. Then, connect positive pole (+) of connection cable to positive
pole (+) of PV input connector. Connect negative pole (-) of connection
cable to negative pole (-) of PV input connector.
3. Make sure the wires are securely connected.
Final Assembly
After connecting all wirings, please put bottom cover back by screwing two screws as shown below.
1KVA/2KVA/3KVA/4KVA/5KVA 2KVA Plus/3KVA Plus
10
Communication Connection
Please use supplied communication cable to connect to inverter and PC. Insert bundled CD into a computer and
follow on-screen instruction to install the monitoring software. For the detailed software operation, please
check user manual of software inside of CD.
Dry Contact Signal
There is one dry contact (3A/250VAC) available on the rear panel. When program 38 is set as “disable”, it could
be used to deliver signal to external device when battery voltage reaches warning level. When program 38 is
set as “enable” and the unit is working in battery mode, it could be used to trigger the grounding box to
connect neutral and grounding of AC output together.
When program 38 is set as “disable” (default setting):
Unit Status
Condition
Dry contact port:
NC & C
NO & C
Power Off
Unit is off and no output is powered.
Close
Open
Power On
Output is powered from Utility.
Close
Open
Output is
powered
from
Battery or
Solar.
Program 01
set as Utility
Battery voltage < Low DC warning
voltage
Open
Close
Battery voltage > Setting value in
Program 13 or battery charging
reaches floating stage
Close
Open
Program 01
is set as
SBU or
Solar first
Battery voltage < Setting value in
Program 12
Open
Close
Battery voltage > Setting value in
Program 13 or battery charging
reaches floating stage
Close
Open
When program 38 is set as “enable”:
Unit Status
Condition
Dry contact port:
NC & C
NO & C
Power Off
Unit is off.
Close
Open
Power On
Output is powered from Battery or Solar
Open
Close
11
OPERATION
Power ON/OFF
Once the unit has been properly installed and the batteries are connected well, simply press On/Off switch
(located on the button of the case) to turn on the unit.
Operation and Display Panel
The operation and display panel, shown in below chart, is on the front panel of the inverter. It includes
three indicators, four function keys and a LCD display, indicating the operating status and input/output
power information.
LED Indicator
LED Indicator
Messages
Green
Solid On
Output is powered by utility in Line mode.
Flashing
Output is powered by battery or PV in battery mode.
Green
Solid On
Battery is fully charged.
Flashing
Battery is charging.
Red
Solid On
Fault occurs in the inverter.
Flashing
Warning condition occurs in the inverter.
Function Keys
Function Key
Description
ESC
To exit setting mode
UP
To go to previous selection
DOWN
To go to next selection
ENTER
To confirm the selection in setting mode or enter setting mode
LCD display
LED indicators
Function keys
12
LCD Display Icons
Icon
Function description
Input Source Information
Indicates the AC input.
Indicates the PV input
Indicate input voltage, input frequency, PV voltage, battery voltage and
charger current.
Configuration Program and Fault Information
Indicates the setting programs.
Indicates the warning and fault codes.
Warning: flashing with warning code.
Fault: lighting with fault code
Output Information
Indicate output voltage, output frequency, load percent, load in VA, load in
Watt and discharging current.
Battery Information
Indicates battery level by 0-24%, 25-49%, 50-74% and 75-100% in battery
mode and charging status in line mode.
In AC mode, it will present battery charging status.
Status
Battery voltage
LCD Display
Constant
Current mode /
Constant
Voltage mode
<2V/cell
4 bars will flash in turns.
2 ~ 2.083V/cell
Bottom bar will be on and the other three
bars will flash in turns.
2.083 ~ 2.167V/cell
Bottom two bars will be on and the other
two bars will flash in turns.
> 2.167 V/cell
Bottom three bars will be on and the top
bar will flash.
Floating mode. Batteries are fully charged.
4 bars will be on.
13
In battery mode, it will present battery capacity.
Load Percentage
Battery Voltage
LCD Display
Load >50%
< 1.717V/cell
1.717V/cell ~ 1.8V/cell
1.8 ~ 1.883V/cell
> 1.883 V/cell
50%> Load > 20%
< 1.817V/cell
1.817V/cell ~ 1.9V/cell
1.9 ~ 1.983V/cell
> 1.983
Load < 20%
< 1.867V/cell
1.867V/cell ~ 1.95V/cell
1.95 ~ 2.033V/cell
> 2.033
Load Information
Indicates overload.
Indicates the load level by 0-24%, 25-49%, 50-74% and 75-100%.
0%~24%
25%~49%
50%~74%
75%~100%
Mode Operation Information
Indicates unit connects to the mains.
Indicates unit connects to the PV panel.
Indicates load is supplied by utility power.
Indicates the utility charger circuit is working.
Indicates the DC/AC inverter circuit is working.
Mute Operation
Indicates unit alarm is disabled.
14
LCD Setting
After pressing and holding ENTER button for 3 seconds, the unit will enter setting mode. Press “UP” or “DOWN”
button to select setting programs. And then, press “ENTER” button to confirm the selection or ESC button to
exit.
Setting Programs:
Program
Description
Selectable option
00
Exit setting mode
Escape
01
Output source priority:
To configure load power
source priority
Solar first
Solar energy provides power to the
loads as first priority.
If solar energy is not sufficient to
power all connected loads, battery
energy will supply power the loads at
the same time.
Utility provides power to the loads only
when any one condition happens:
- Solar energy is not available
- Battery voltage drops to either
low-level warning voltage or the
setting point in program 12.
Utility first (default)
Utility will provide power to the loads
as first priority.
Solar and battery energy will provide
power to the loads only when utility
power is not available.
SBU priority
Solar energy provides power to the
loads as first priority.
If solar energy is not sufficient to
power all connected loads, battery
energy will supply power to the loads
at the same time.
Utility provides power to the loads only
when battery voltage drops to either
low-level warning voltage or the
setting point in program 12.
02
Maximum charging current:
To configure total charging
current for solar and utility
chargers.
(Max. charging current =
utility charging current +
solar charging current)
Available options in 1KVA 12V model:
10A
20A
30A
40A (default)
50A
60A
15
02
Maximum charging current:
To configure total charging
current for solar and utility
chargers.
(Max. charging current =
utility charging current +
solar charging current)
Available options in 1KVA 24V and 1KVA/3KVA 48V models:
10A
20A (default)
30A
40A
Available options in 2-3KVA 24V models:
20A
30A (default)
40A
50A
60A
02
Maximum charging current:
To configure total charging
current for solar and utility
chargers.
(Max. charging current =
utility charging current +
solar charging current)
Available options in 2-3KVA 24V/48V Plus models:
10A (Not available
for 2-3KVA 24V Plus)
20A
30A
40A
50A
60A (default)
70A
80A
90A (Not available for 2-3KVA 48V Plus)
Available options in 4K/5K model
10A
20A
30A
40A
50A
60A (default)
70A
80A
16
90A
100A
110A
120A
130A
140A
03
AC input voltage range
Appliances (default)
If selected, acceptable AC input
voltage range will be within
90-280VAC.
UPS
If selected, acceptable AC input
voltage range will be within
170-280VAC.
04
Power saving mode
enable/disable
Saving mode disable
(default)
If disabled, no matter connected load
is low or high, the on/off status of
inverter output will not be effected.
Saving mode enable
If enabled, the output of inverter will
be off when connected load is pretty
low or not detected.
05
Battery type
AGM (default)
Flooded
User-Defined
If “User-Defined” is selected, battery
charge voltage and low DC cut-off
voltage can be set up in program 26,
27 and 29.
06
Auto restart when overload
occurs
Restart disable
(default)
Restart enable
07
Auto restart when over
temperature occurs
Restart disable
(default)
Restart enable
08
Output voltage (only
available for 110/120Vac
models)
110V
120V (default)
09
Output frequency
50Hz (default)
60Hz
17
11
Maximum utility charging
current
Available options in 1KVA 12V/ 24V and 2KVA 24V Plus 120Vac
model:
10A
20A(default):
Available options in 2-3KVA 24V and 2-3KVA 24V Plus models:
20A
30A (default)
11
Maximum utility charging
current
Available options in 1KVA/3KVA 48V and 2-3KVA 48V Plus
models:
10A
15A(default):
Available options in 2KVA 48V Plus 120Vac model:
5A
10A(default)
Available options in 4KVA/5KVA models:
2A
10A
20A
30A (default)
40A
50A
60A
12
Setting voltage point back
to utility source when
selecting “SBU priority” or
“Solar first” in program 01.
Available options in 12V model:
11.0V
11.3V
11.5V (default)
11.8V
12.0V
12.3V
18
12.5V
12.8V
Available options in 24V models:
22.0V
22.5V
23.0V (default)
23.5V
24.0V
24.5V
25.0V
25.5V
Available options in 48V models:
44V
45V
46V (default)
47V
48V
49V
50V
51V
12
Setting voltage point back
to utility source when
selecting “SBU priority” or
“Solar first” in program 01.
Below options only available for the model with 64VDC
maximum charging voltage
52V
53V
54V
55V
19
12
Setting voltage point back
to utility source when
selecting “SBU priority” or
“Solar first” in program 01.
56V
57V
13
Setting voltage point back
to battery mode when
selecting “SBU priority” or
“Solar first” in program 01.
Available options in 12V model:
Battery fully charged
12.0V
12.3V
12.5V
12.8V
13.0V
13.3V
13.5V (default)
13.8V
14.0V
14.3V
14.5V
Available options in 24V models:
Battery fully charged
24V
24.5V
25V
25.5V
26V
26.5V
27V (default)
20
13
Setting voltage point back
to battery mode when
selecting “SBU priority” or
“Solar first” in program 01.
27.5V
28V
28.5V
29V
Available options in 48V models:
Battery fully charged
48V
49V
50V
51V
52V
53V
54V (default)
55V
56V
57V
58V
Below options only available for the model with 64VDC
maximum charging voltage
59V
60V
61V
62V
63V
64V
21
16
Charger source priority:
To configure charger source
priority
If this inverter/charger is working in Line, Standby or Fault
mode, charger source can be programmed as below:
Solar first
Solar energy will charge battery as
first priority.
Utility will charge battery only when
solar energy is not available.
Utility first
Utility will charge battery as first
priority.
Solar energy will charge battery only
when utility power is not available.
Solar and Utility
Solar energy and utility will charge
battery at the same time.
Only Solar
Solar energy will be the only charger
source no matter utility is available
or not.
If this inverter/charger is working in Battery mode or Power
saving mode, only solar energy can charge battery. Solar
energy will charge battery if it's available and sufficient.
18
Alarm control
Alarm on (default)
Alarm off
19
Auto return to default
display screen
Return to default
display screen (default)
If selected, no matter how users
switch display screen, it will
automatically return to default
display screen (Input voltage
/output voltage) after no button is
pressed for 1 minute.
Stay at latest screen
If selected, the display screen will
stay at latest screen user finally
switches.
20
Backlight control
Backlight on (default)
Backlight off
22
Beeps while primary source
is interrupted
Alarm on (default)
Alarm off
23
Overload bypass:
When enabled, the unit will
transfer to line mode if
overload occurs in battery
mode.
Bypass disable
(default)
Bypass enable
25
Record Fault code
Record enable
Record disable (default)
22
26
Bulk charging voltage
(C.V voltage)
12V model default setting: 14.1V
24V model default setting: 28.2V
48V model default setting: 56.4V
If self-defined is selected in program 5, this program can be
set up. Setting range is from 12.0V to 14.6V for 12V model,
24.0V to 29.2V for 24V model and 48.0V to 58.4V for 48V
model. For the model with 64V maximum charging voltage,
the setting range is from 48.0V to 64.0V. Increment of each
click is 0.1V.
27
Floating charging voltage
12V model default setting: 13.5V
24V model default to 27.0V
48V model default setting: 54.0V
If self-defined is selected in program 5, this program can be
set up. Setting range is from 12.0V to 14.6V for 12V model,
24.0V to 29.2V for 24V model, 48.0V to 58.4V for 48V model.
For the model with 64V maximum charging voltage, the
setting range is from 48.0V to 64.0V. Increment of each click
is 0.1V.
29
Low DC cut-off voltage
12V model default setting: 10.5V
24V model default setting: 21.0V
48V model default setting: 42.0V
23
If self-defined is selected in program 5, this program can be
set up. Setting range is from 10.0V to 12.0V for 12V model,
20.0V to 24.0V for 24V model, 40.0V to 48.0V for 48V model.
For the model with 64V maximum charging voltage, the
setting range is from 40.0V to 54.0V. Increment of each click
is 0.1V. Low DC cut-off voltage will be fixed to setting value no
matter what percentage of load is connected.
31
Solar power balance:
When enabled, solar input
power will be automatically
adjusted according to
connected load power.
(Only available for
4KVA/5KVA model)
Solar power balance
enable (Default):
If selected, solar input power will
be automatically adjusted
according to the following formula:
Max. input solar power = Max.
battery charging power +
Connected load power.
Solar power balance
disable:
If selected, the solar input power
will be the same to max. battery
charging power no matter how
much loads are connected. The
max. battery charging power will
be based on the setting current in
program 02.
(Max. solar power = Max. battery
charging power)
32
Bulk charging time
(C.V stage)
(Only available for
4KVA/5KVA model)
Automatically (Default):
If selected, inverter will judge this
charging time automatically.
5 min
The setting range is from 5 min to
900 min. Increment of each click is
5 min.
900 min
If “USE” is selected in program 05, this program can be set up.
38
Allow neutral and grounding
of AC output is connected
together:
When enabled, inverter can
deliver signal to trigger
grounding box to short
neutral and grounding
Disable: Neutral and grounding of AC output is disconnected.
(Default)
Enable: Neutral and grounding of AC output is connected.
This function is only available when the inverter is working
with external grounding box. Only when the inverter is
working in battery mode, it will trigger grounding box to
connect neutral and grounding of AC output.
24
Display Setting
The LCD display information will be switched in turns by pressing “UP” or “DOWN” key. The selectable
information is switched as below order: input voltage, input frequency, PV voltage, MPPT charging current,
MPPT charging power, battery voltage, output voltage, output frequency, load percentage, load in VA,
load in Watt, DC discharging current, main CPU Version and second CPU Version.
Selectable information
LCD display
Input voltage/Output voltage
(Default Display Screen)
Input Voltage=230V, output voltage=230V
Input frequency
Input frequency=50Hz
PV voltage
PV voltage=60V
MPPT Charging current
Current ≧10A
Current < 10A
MPPT Charging power
MPPT charging power=500W
25
Battery voltage/ DC discharging current
Battery voltage=25.5V, discharging current=1A
Output frequency
Output frequency=50Hz
Load percentage
Load percent=70%
Load in VA
When connected load is lower than 1kVA, load in
VA will present xxxVA like below chart.
When load is larger than 1kVA (≧1KVA), load in
VA will present x.xkVA like below chart.
26
Load in Watt
When load is lower than 1kW, load in W will
present xxxW like below chart.
When load is larger than 1kW (≧1KW), load in W
will present x.xkW like below chart.
Main CPU version checking
Main CPU version 00014.04
Secondary CPU version checking
Secondary CPU version 00003.03
27
Operating Mode Description
Operation mode
Description
LCD display
Standby mode / Power
saving mode
Note:
*Standby mode: The inverter is
not turned on yet but at this
time, the inverter can charge
battery without AC output.
*Power saving mode: If
enabled, the output of inverter
will be off when connected load
is pretty low or not detected.
No output is supplied by the
unit but it still can charge
batteries.
Charging by utility and PV energy.
Charging by utility.
Charging by PV energy.
No charging.
Fault mode
Note:
*Fault mode: Errors are caused
by inside circuit error or external
reasons such as over
temperature, output short
circuited and so on.
PV energy and utility can
charge batteries.
Charging by utility and PV energy.
Charging by utility. (Only available in 1K/2K/3K
model)
Charging by PV energy.
No charging.
Line Mode
The unit will provide output
power from the mains. It will
also charge the battery at
line mode.
Charging by PV energy
Charging by utility.
28
Battery Mode
The unit will provide output
power from battery and PV
power.
Power from battery and PV energy.
Power from battery only.
Fault Reference Code
Fault Code
Fault Event
Icon on
01
Fan is locked when inverter is off.
02
Over temperature
03
Battery voltage is too high
04
Battery voltage is too low
05
Output short circuited or over temperature is detected
by internal converter components.
06
Output voltage is abnormal. (For 1K/2K/3K model)
Output voltage is too high. (For 4K/5K model)
07
Overload time out
08
Bus voltage is too high
09
Bus soft start failed
11
Main relay failed
51
Over current or surge
52
Bus voltage is too low
53
Inverter soft start failed
55
Over DC voltage in AC output
56
Battery connection is open
57
Current sensor failed
58
Output voltage is too low
NOTE: Fault codes 51, 52, 53, 55, 56, 57 and 58 are only available in 4K/5K model.
29
Warning Indicator
Warning
Code
Warning Event
Audible Alarm
Icon flashing
01
Fan is locked when
inverter is on.
Beep three times every
second
03
Battery is over-charged
Beep once every second
04
Low battery
Beep once every second
07
Overload
Beep once every 0.5 second
10
Output power derating
Beep twice every 3 seconds
12
Solar charger stops due
to low battery.
13
Solar charger stops due
to high PV voltage.
14
Solar charger stops due
to overload.
30
EQUALIZATION (Only available for 4KVA/5KVA model)
Equalization function is for refreshed battery capacity. It reverses the buildup of negative chemical
effects like stratification, a condition where acid concentration is greater at the bottom of the battery
than at the top. Equalization also helps to remove sulfate crystals that might have built up on the
plates. If left unchecked, this condition, called sulfation, will reduce the overall capacity of the battery.
Therefore, it’s recommended to equalize battery periodically.
How to Equalization
Users can equalize battery manually. Please follow below steps to set up battery equalization.
1. After pressing and holding ENTER button for 3 seconds, LCD will go to setting page.
2. Select program 01 and set it as “UTI”. The output priority will be utility first.
3. Select program 02 and set the equalization charging current you need for battery. Below screen is
to set up equalization current as 60A.
4. Select program 05 and set it as “USE”. It’s use-defined battery type.
5. Select program 16 and set it as “SNU”. Charging priority will be solar and utility together.
6. Select program 26 and set the bulk charging current you need for battery. It will be max.
charging voltage for equalization. Below screen is to set up max. charging voltage as 56.4V.
7. Select program 32 and set the charging time for C.V stage. It will be charging time for battery
equalization. Below screen is to set up charging time as 900 min.
After following above steps, PV power and utility will charge battery at setting max. charging voltage
in program 26 and keep charging for the period of setting in program 32 (equalization charging time).
After that, battery will be in floating charging stage. Once LED lights on, it means battery is
fully charged and one equalization cycle is complete. At this time, please be sure to restore above
settings to previous setting for normal operation.
31
SPECIFICATIONS
Table 1 Line Mode Specifications
INVERTER MODEL
1KVA 12V
1KVA 24V
2KVA 24V
3KVA 24V
1KVA 48V
3KVA 48V
2KVA 24V Plus
3KVA 24V Plus
2KVA 48V Plus
3KVA 48V Plus
4KVA
5KVA
Input Voltage Waveform
Sinusoidal (utility or generator)
Nominal Input Voltage
110/120Vac or 230Vac
Low Loss Voltage
95Vac± 7V or 170Vac± 7V (UPS)
65Vac± 7V or 90Vac± 7V (Appliances)
Low Loss Return Voltage
100Vac± 7V or 180Vac± 7V (UPS);
70Vac± 7V or 100Vac± 7V (Appliances)
High Loss Voltage
140Vac± 7V or 280Vac± 7V
High Loss Return Voltage
135Vac± 7V or 270Vac± 7V
Max AC Input Voltage
150Vac or 300Vac
Nominal Input Frequency
50Hz / 60Hz (Auto detection)
Low Loss Frequency
40± 1Hz
Low Loss Return Frequency
42± 1Hz
High Loss Frequency
65± 1Hz
High Loss Return Frequency
63± 1Hz
Output Short Circuit Protection
Line mode: Circuit Breaker
Battery mode: Electronic Circuits
Efficiency (Line Mode)
>95% ( Rated R load, battery full charged )
Transfer Time
10ms typical (UPS);
20ms typical (Appliances)
Output power derating:
When AC input voltage drops to 95V or
170V depending on models, the output
power will be derated.
110/120Vac model:
Input Voltage
Output Power
Rated Power
50% Power
65V 95V 140V
230Vac model:
Input Voltage
Output Power
Rated Power
50%
Power
90V 170V 280V
32
Table 2 Inverter Mode Specifications
INVERTER MODEL
1KVA 12V
1KVA 24V
2KVA 24V
3KVA 24V
2KVA 24V Plus
3KVA 24V Plus
1KVA 48V
3KVA 48V
2KVA 48V Plus
3KVA 48V Plus
4KVA
5KVA
Rated Output Power
1KVA/0.8KW
1KVA/0.8KW
2KVA/1.6KW
3KVA/2.4KW
1KVA/1KW
2KVA/1.6KW
3KVA/2.4KW
4KVA/3.2KW
5KVA/4KW
Output Voltage Waveform
Pure Sine Wave
Output Voltage Regulation
110/120VAC± 5%* or 230Vac± 5%
Output Frequency
60Hz or 50Hz
Peak Efficiency
90%
Overload Protection
5s@≥150% load; 10s@110%~150% load
Surge Capacity
2* rated power for 5 seconds
Nominal DC Input Voltage
12Vdc
24Vdc
48Vdc
Cold Start Voltage
11.5Vdc
23.0Vdc
46.0Vdc
Low DC Warning Voltage
@ load < 20%
11.0Vdc
22.0Vdc
44.0Vdc
@ 20% ≤ load < 50%
10.7Vdc
21.4Vdc
42.8Vdc
@ load ≥ 50%
10.1Vdc
20.2Vdc
40.4Vdc
Low DC Warning Return Voltage
@ load < 20%
11.5Vdc
23.0Vdc
46.0Vdc
@ 20% ≤ load < 50%
11.2Vdc
22.4Vdc
44.8Vdc
@ load ≥ 50%
10.6Vdc
21.2Vdc
42.4Vdc
Low DC Cut-off Voltage
@ load < 20%
10.5Vdc
21.0Vdc
42.0Vdc
@ 20% ≤ load < 50%
10.2Vdc
20.4Vdc
40.8Vdc
@ load ≥ 50%
9.6Vdc
19.2Vdc
38.4Vdc
High DC Recovery Voltage
14.5Vdc
29Vdc
58Vdc
58Vdc or 62Vdc
High DC Cut-off Voltage
15.5Vdc
31Vdc
62Vdc
60Vdc or 66Vdc
No Load Power Consumption
<15W
<25W
<50W
Saving Mode Power Consumption
<5W
<10W
<15W
*4KVA/5KVA only supports 230VAC system.
33
Table 3 Charge Mode Specifications
Utility Charging Mode
INVERTER MODEL
1KVA 12V
1KVA 24V
2KVA 24V
Plus 120Vac
2KVA 24V
3KVA 24V
2KVA 24V Plus
3KVA 24V Plus
2KVA 48V
Plus
120Vac
1KVA 48V
3KVA 48V
2KVA 48V Plus
3KVA 48V Plus
4KVA
5KVA
Charging Current (UPS)
@ Nominal Input Voltage
10/20A
20/30A
5/10A
10/15A
2/10A/
20/30A/
40/50/60A
Bulk
Charging
Voltage
Flooded
Battery
14.6
29.2
58.4
AGM / Gel
Battery
14.1
28.2
56.4
Floating Charging Voltage
13.5Vdc
27Vdc
54Vdc
54Vdc
54Vdc or
64Vdc
Overcharge Protection
15.5Vdvc
31Vdc
60Vdc
60Vdc
66Vdc
Charging Algorithm
3-Step
Charging Curve
Time
Battery Voltage, per cell Charging Current, %
100%
50%
Bulk
(Constant Current)
Absorption
(Constant Voltage)
Maintenance
(Floating)
Current
Voltage
T1
T1 = 10* T0, minimum 10mins, maximum 8hrs
T0
2.43Vdc (2.35Vdc)
2.25Vdc
34
Solar Charging Mode
INVERTER MODEL
1KVA 12V
1KVA 24V
2KVA 24V
3KVA 24V
1KVA 48V
3KVA 48V
2KVA 24V Plus
3KVA 24V Plus
2KVA 48V Plus
3KVA 48V Plus
4KVA
5KVA
Rated Power
500W
600W
900W
1500W
3000W
4000W
Efficiency
98.0% max.
Max. PV Array Open
Circuit Voltage
102Vdc
75Vdc
102Vdc
145Vdc
PV Array MPPT Voltage
Range
15~80Vdc
30~66Vdc
60~88Vdc
30~115Vdc
60~115Vdc
Min battery voltage for
PV charge
8.5Vdc
17Vdc
34Vdc
17Vdc
34Vdc
Standby Power
Consumption
2W
Battery Voltage
Accuracy
+/-0.3%
PV Voltage Accuracy
+/-2V
Charging Algorithm
3-Step
Joint Utility and Solar Charging
Max Charging Current
60Amp
1K: 45Amp
2K/3K:
55Amp
33Amp
90Amp
75Amp
140Amp
Default Charging
Current
40Amp
1K: 20Amp
2K/3K:
30Amp
20Amp
60 Amp
60 Amp
60Amp
Table 4 General Specifications
INVERTER
MODEL
1KVA 12V
230Vac
1KVA 12V
110Vac
1KVA 24V
1KVA 48V
2KVA
24V
3KVA 24V
3KVA 48V
2KVA 24V Plus
3KVA 24V Plus
2KVA 48V Plus
3KVA 48V Plus
4KVA
5KVA
Safety
Certification
CE
Operating
Temperature
Range
0°C to 55°C
Storage
temperature
-15°C~ 60°C
Humidity
5% to 95% Relative Humidity (Non-condensing)
Dimension
(D*W*H), mm
95 x 240 x
316
100 x 272 x 355
140 x 295 x 479
120 x 295 x 468
Net Weight, kg
5.2
6.8
7.0
7.4
11.5
11
35
TROUBLE SHOOTING
Problem
LCD/LED/Buzzer
Explanation / Possible cause
What to do
Unit shuts down
automatically
during startup
process.
LCD/LEDs and buzzer
will be active for 3
seconds and then
complete off.
The battery voltage is too low
(<1.91V/Cell)
1. Re-charge battery.
2. Replace battery.
No response after
power on.
No indication.
1. The battery voltage is far too
low. (<1.4V/Cell)
2. Battery polarity is connected
reversed.
1. Check if batteries and the
wiring are connected well.
2. Re-charge battery.
3. Replace battery.
Mains exist but the
unit works in
battery mode.
Input voltage is
displayed as 0 on the
LCD and green LED is
flashing.
Input protector is tripped
Check if AC breaker is tripped
and AC wiring is connected
well.
Green LED is flashing.
Insufficient quality of AC power.
(Shore or Generator)
1. Check if AC wires are too
thin and/or too long.
2. Check if generator (if
applied) is working well or if
input voltage range setting is
correct. (UPSAppliance)
Green LED is flashing.
Set “Solar First” as the priority of
output source.
Change output source priority
to Utility first.
When the unit is
turned on, internal
relay is switched on
and off repeatedly.
LCD display and LEDs
are flashing
Battery is disconnected.
Check if battery wires are
connected well.
Buzzer beeps
continuously and
red LED is on.
Fault code 07
Overload error. The inverter is
overload 110% and time is up.
Reduce the connected load by
switching off some
equipment.
Fault code 05
Output short circuited.
Check if wiring is connected
well and remove abnormal
load.
Temperature of internal converter
component is over 120°C. (Only
available for 1-3KVA models.)
Check whether the air flow of
the unit is blocked or whether
the ambient temperature is
too high.
Fault code 02
Internal temperature of inverter
component is over 100°C.
Fault code 03
Battery is over-charged.
Return to repair center.
The battery voltage is too high.
Check if spec and quantity of
batteries are meet
requirements.
Fault code 01
Fan fault
Replace the fan.
Fault code 06/58
Output abnormal (Inverter voltage
below than 190Vac or is higher
than 260Vac)
1. Reduce the connected
load.
2. Return to repair center
Fault code
08/09/53/57
Internal components failed.
Return to repair center.
Fault code 51
Over current or surge.
Restart the unit, if the error
happens again, please return
to repair center.
Fault code 52
Bus voltage is too low.
Fault code 55
Output voltage is unbalanced.
Fault code 56
Battery is not connected well or
fuse is burnt.
If the battery is connected
well, please return to repair
center.
36
Appendix: Approximate Back-up Time Table
Model
Load (VA)
Backup Time @ 12Vdc 100Ah (min)
Backup Time @ 12Vdc 200Ah (min)
1KVA
100
766
1610
200
335
766
300
198
503
400
139
339
500
112
269
600
95
227
700
81
176
800
62
140
900
55
125
1000
50
112
Model
Load (VA)
Backup Time @24Vdc 100Ah (min)
Backup Time @24Vdc 200Ah (min)
1KVA
200
766
1610
400
335
766
600
198
503
800
139
339
1000
112
269
2KVA
200
766
1610
400
335
766
600
198
503
800
139
339
1000
112
269
1200
95
227
1400
81
176
1600
62
140
1800
55
125
2000
50
112
3KVA
300
449
1100
600
222
525
900
124
303
1200
95
227
1500
68
164
1800
56
126
2100
48
108
2400
35
94
2700
31
74
3000
28
67
37
Model
Load (VA)
Backup Time @ 48Vdc 100Ah (min)
Backup Time @ 48Vdc 200Ah (min)
1KVA
100
2529
5058
200
1264
2529
300
843
1686
400
608
1279
500
482
1035
600
406
872
700
310
710
800
268
615
900
231
540
1000
186
471
2KVA
200
1581
3161
400
751
1581
600
491
1054
800
331
760
1000
268
615
1200
221
508
1400
172
387
1600
136
335
1800
120
295
2000
106
257
3KVA
300
1054
2107
600
491
1054
900
291
668
1200
196
497
1500
159
402
1800
123
301
2100
105
253
2400
91
219
2700
71
174
3000
63
155
4KVA
400
766
1610
800
335
766
1200
198
503
1600
139
339
2000
112
269
2400
95
227
2800
81
176
3200
62
140
3600
55
125
4000
50
112
38
Model
Load (VA)
Backup Time @ 48Vdc 100Ah (min)
Backup Time @ 48Vdc 200Ah (min)
5KVA
500
613
1288
1000
268
613
1500
158
402
2000
111
271
2500
90
215
3000
76
182
3500
65
141
4000
50
112
4500
44
100
5000
40
90
Note: Backup time depends on the quality of the battery, age of battery and type of battery.
Specifications of batteries may vary depending on different manufacturers.
