Page 1 of 20 Rev. A
User MANUAL
Vertex Solar Inverter 3KW
Page 2 of 20 Rev. A
Table of Contents
1. SCOPE OF DELIVERY 3
2. IMPORTANT SAFETY INSTRUCTIONS 3
3. INTRODUCTION 4
4. EQUIPMENT OVERVIEW 8
5. INSTALLATION 9
6. COMMISSIONING 11
7. MONITORING THE INVERTER 12
8. MAINTENANCE & CLEANING 19
9. WARNING SITUATION 19
10. SPECIFICATIONS 20
Page 3 of 20 Rev. A
1. Scope of delivery
The manual provides safety guidelines, detailed planning and setup information. It provides
procedures for installing the inverter and information about operation and troubleshooting of the
unit. This manual does not contain details about photovoltaic (PV) panels. Please consult with
system integrator for the information.
2. Important Safety Instructions
SAVE THESE INSTRUCTIONS — this user manual contains important instructions that shall be
followed during the installation and maintenance of the Vertex Solar Inverters.
The following warnings identify conditions or practices that could result in personal injury or loss
of life.
1) Before installing and using the Solar Inverter, read all instructions and cautionary markings
on the inverter and all appropriate sections of this guide.
2) To reduce risk of fire hazard, do not cover or obstruct the inverter.
3) Under some conditions, the surface of Inverter case could be hot enough to cause skin burns
if accidentally touched. Ensure that the Inverter is located away from normal traffic areas.
4) Use only accessories recommended or sold by the installer. Otherwise, not-qualified tool may
result in a risk of fire, electric shock, or injury to persons.
5) To avoid a risk of fire and electric shock, make sure that existing wiring is in good condition
and the wire is not undersized. Do not operate the Inverter with damaged or substandard
wiring.
6) Do not operate the Inverter if it has received a sharp blow, been dropped, or otherwise
damaged in any way. If the Inverter is damaged, call for an RMA (Return Material
Authorization)
7) Do not disassemble the Solar Inverter. It contains no user-serviceable parts. Attempting to
service the Solar Inverter yourself may result in a risk of electrical shock or fire and will void
warranty from manufacturer.
8) Authorized service personnel should reduce the risk of electrical shock by disconnecting both
the AC and DC power from the Inverter before attempting any maintenance or cleaning or
working on any circuits connected to the inverter. Turning off controls will not reduce this
risk. Internal capacitors can remain charged for 5 minutes after disconnecting all sources of
power.
9) Normally grounded conductors may be ungrounded and energized when a ground fault is
indicated.
Page 4 of 20 Rev. A
3. Introduction
Vertex Solar inverter is a off grid PV inverter which consists of three power generation sources
such as PV modules, battery power, and AC power sources. The AC power source could be
generator or utility grid. The configuration is illustrated in Figure 1. When the sun is shining for
PV modules and battery is fully charged, connected loads will be powered by PV modules and
battery. When there is insufficient solar power, the inverter will switch to AC power as major
power source and PV module will charge the battery first.
Figure 1
Working Operations
This device has two working states: no output generation state and output generation state. If
you don’t need to have connected loads powered, you may press ON button of the inverter to
switch to “No output generation” state. If it’s necessary to power connected loads, you may press
OFF button to switch to “Output generation” state. There are four operation modes.
1) Standby mode with PV charging (refer to Figure 2)
Figure 2
The inverter will work in this mode under below conditions:
When there is no output generation and PV power is available, PV power will charge the
battery and MPPT is functioning at the same time.
When the inverter is in output generation state with battery voltage below 42Vdc and PV
source is available, the inverter also works in this mode.
2) Standby mode with AC charging (refer to Figure 3)
Figure 3
Page 5 of 20 Rev. A
The inverter will work in this mode when there is no output generation, and PV power source and
PV power source are available.
When the working status change from no output generation to output generation:
If the battery voltage is higher than 46Vdc, the inverter will switch to inverter mode.
If the battery voltage is lower than 46Vdc, and AC power source and PV energy are available,
the inverter will switch to bypass mode with PV charging.
If the battery voltage is lower than 46Vdc with only AC power source available, the inverter
will switch to bypass mode with AC charging.
3) Inverter mode (refer to Figure 4)
Figure 4
When inverter work in this mode. If PV energy is more than required energy for the load, the
inverter will generate power to the connected load and charge the battery simultaneously. If PV
power is insufficient to support connected loads, both PV power and battery will support the load.
If no PV power exists, the inverter will switch to battery independently to support the load. When
the battery voltage drops to 42Vdc, the inverter will switch to bypass mode with PV charging
when PV energy and AC power source are available, or switch to bypass mode with AC charging
while only AC power is available. Or the inverter will switch to standby mode when PV energy and
AC power source are not available. The inverter will go back inverter working mode when the
battery voltage is turning back to 50Vdc.
Page 6 of 20 Rev. A
4) Bypass mode with PV charging (refer to Figure 5)
Figure 5
When inverter work in this mode. AC power source will power connected load and PV energy will
charge the battery in this mode. This operation will be continued until battery voltage is higher
than 50Vdc, and then inverter will automatically transfer to inverter mode.
5) Bypass mode with AC charging (refer to Figure 6)
Figure 6
When inverter work in this mode. AC power source will support the load and charge the battery
at the same time. This operation will be continued until battery voltage is higher than 50Vdc and
then inverter will transfer to inverter mode automatically.
Note: The vertex solar inverter can be setup as a grid-tie solar inverter. Please contact with
supplier for more detailed information.
PV Compatibility
This inverter is designed to generate continuous power from three different power sources: PV
solar modules (solar panels), battery, and AC power source. When MPP input voltage of PV
modules is within 150 VDC to 500 VDC, this inverter is able to generate power to the load or
charge battery. This inverter is compatible with PV module types of single crystalline and poly
crystalline.
Note: When PV input voltage is lower than 250V, the PV input power of inverter will de-rate.
Page 7 of 20 Rev. A
Maximum Power Point Tracking (MPPT)
The Solar Inverter is applied with Maximum Power Point Tracking (MPPT) technology to harvest
the maximum amount of energy from the solar panel.
Measurement must be taken to ensure that the maximum open circuit voltage of 500 VDC is
never exceeded. Please note that the maximum open-circuit voltage will occur at the lowest
temperatures anticipated. You will find more detailed information about temperature
dependency in the data sheet of the PV modules.
Standard Features
The Solar Inverter has the following features:
Provides comprehensive data with easy-to-read graphic design in LCD display
Bundled software for remote access inverter data
Provides RS232/USB communication ports and optional communication cards available
Page 8 of 20 Rev. A
4. Equipment overview
FRONT VIEW
BACK VIEW
A: PV input connector
B: Grid input connector
C: battery input connector
D: AC output connector
B
A
C
G
H
F
E
D
I
Page 9 of 20 Rev. A
E: Grounding
F: RS-232 Communication port
G: Intelligent slot
H: Parallel connectors(Reserved)
I: USB port
5. Installation
5.1 Installation location
Do not mount the inverter on flammable construction materials.
Mount on a solid surface
High temperature may cause a power reduction due to excessive heating.
Install this inverter at eye level in order to allow the LCD display to be read at all times.
Dusty conditions on the unit may impair the performance of this inverter.
5.2 Minimum requirements
For proper air circulation to dissipate heat, allow a clearance of approx. 20 cm to the side and
approx. 50 cm above and below the unit.
For proper operation of this inverter, please use appropriate cables (cable length,
cable cross-section) for grid impedance requirement at the supply terminal.
The recommended installation position is to be adhered to (vertical).
5.3 Installation
Installation to the wall should be implemented with the proper screws so that the solar inverter
can be easily attached to the wall. After that, the device should be bolted on securely.
Assembly instructions:
Select an appropriate mounting location. Install the solar inverter in a protected area that is
free of excessive dust and has adequate air flow. Do NOT operate it where the temperature
and humidity is outside the specific limits. (Please check the specs for the limitations.)
Drill four holes in the marked locations with four screws. (see Fig. 1 & Fig. 2) Place the unit
on the surface and align the mounting holes with four screws.
Check if the solar inverter is securely fixed.
Page 10 of 20 Rev. A
Figure 1 Figure 2
5.4 Ambient temperature
The solar inverter can be operated in an ambient temperature between 0℃ to +40℃.
5.5 AC Power Source Connection
Measure frequency and voltage of AC power source. It should be 230VAC, 50HZ, and single
phase.
Open the breaker or fuse between the inverter and AC power source. Connect AC wires as table
1.
C
onn
e
ctor
s
wire sug
gestion
PV
PV+
A:+
12AWG or 4mm
2
PV
-
A:
-
GRID
L
B:L1
N
B:N
GROUND
E
BATTERY
BAT+
C:POS+
6AWG or 15mm
2
BAT
-
C:NEG
-
AC OUTPUT
L
D:L
12AWG or 4mm
2
N
D:N
GROUND
D:
GROUND
Table 1
WALL
Page 11 of 20 Rev. A
To prevent risk of electric shock, ensure the ground wire is properly earthed before operating the
solar inverter.
5.6 PV Module Connection
Before the photovoltaic system is connected, the polarity of the PV voltage must be checked for
correctness. Connect PV wires as table 1.
Please ensure the following at all times:
Avoid direct contact to terminals of solar inverter due to the risk of dangerous voltage.
Never disconnect running inverter from PV modules. If it’s necessary, first switch off AC
power source first so that the solar inverter cannot get feed any further power.
The maximum input voltage of the solar inverter is 500V.
5.7 Battery Connection
Please ensure that nominal battery voltage is 48Vdc first. Open the breaker or fuse between the
inverter and battery. Then, connect battery wires as table 1.
5.8 Load Connection
Connect output wires to the load as table 1.
6. Commissioning
6.1 Startup Procedure
Check the following requirements before commissioning:
Check DC voltage of PV modules
Uncover the PV modules and expose them to full sunlight. The sunlight must be intense
enough to produce the required PV output voltage.
Measure Open Circuit DC Voltage of PV modules via DC positive (+) and DC negative (–)
terminals. This voltage must be within 150 VDC to 500VDC to energize the inverter
electronics and prevent damage to input circuitry of the inverter.
Check battery voltage
Ensure that battery voltage is at approximately nominal value (48Vdc) expected for inverter.
The AC breaker and battery breaker are correctly rated.
Before switching on the power, check all feeders and connections again.
Start up the inverter by switching the breakers of PV, AC power source and battery to “ON’
status. Keep pressing the ON key continuously until the buzzer continuously sound. Then,
Page 12 of 20 Rev. A
the inverter will be turned on. If you want to turn off the inverter, simply keep pressing
the OFF key continuously until the buzzer continuously sound.
7. Monitoring the Inverter
7.1 LCD Information Define
NOTICE: To accurately monitor and calculate the energy generation, please calibrate the timer
of this unit via software every one month. For the detailed calibration, please check the user
manual of bundled software.
NOTIEC: There is a battery inside of control board. It’s recommended to replace the battery
every 5 years. Check the replacement procedure in Maintenance section.
Display
Function
Indicates AC
in
put voltage or frequency.
Vac: voltage, Hz: frequency
Indicates AC output
power, voltage, frequency, or Load
percentage.
KW: power, Vac: Voltage, Hz: frequency, %:
Load percentage
Indi
cates
PV
in
put voltage or
power
.
Volt: voltage, KW: power
Indicates
battery
voltage or
percentage
.
Volt: voltage, %: percentage
Indicates charging current to battery.
Indicates that the warning occurs.
Indicates that the fault occurs.
Indica
tes fault code
in fault mode
or
WR for
warning situation.
Indicates
date and time, or the date and
time you set for querying energy generated.
Page 13 of 20 Rev. A
Indicates solar panels.
Indicates grid.
Indicates battery.
Indicates load.
Indicates PV energy generated.
7.2 Button Definition
This display is operated by four buttons.
Button
Function
Up
Press this button to select
last
selection or increase value.
Down
If
it
’
s in
quer
y
m
enu
, press
this
button
to select next selection or
decrease value.
Press this button to mute alarm in standby mode.
E
NTER/ON
Press to
enter quer
y
m
enu
.
If it’s in query menu, press this button to confirm selection or entry.
Keep press this button continuously until the buzzer long time sound,
inverter turn on the AC output.
ESC
/OFF
P
ress
to
return to
last
menu.
Keep press this button continuously until the buzzer long time sound,
inverter turn off the AC output.
NOTE: If backlight shuts off, you may activate it by pressing any button. When an error occurs,
the buzzer will continuously sound. You may press any button to mute it.
7.3 Query Menu Operation
This display shows current values of your system. This displayed values can be changed in query
menu via button operation. Press “Enter” button to enter query menu. There are seven query
selections:
Grid voltage or frequency of AC input
Frequency, voltage, power or load percentage of AC output
Input voltage or power of PV input.
Battery voltage or capability percentage.
Date and time.
Today or total energy generated.
Mode of query energy generated.
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Setting Display Procedure
Input voltage or frequency of AC input
Procedure
Frequency, voltage, power or percentage of AC output
Procedure
Page 15 of 20 Rev. A
Input voltage or power of PV input.
Procedure
Battery voltage or percentage.
Procedure
Date and time.
Procedure
Page 16 of 20 Rev. A
Today or total energy generated.
Procedure
Mode of query energy generated.
Energy generation display of selected day
Procedure:
1.
Enter
Up
Down
Up
Down
Enter
2.
3.
4.
5.
Enter
Flashes
Flashes
Flashes
Enter
Enter
Enter
Up Down
Up Down
Up Down
Enter
Esc
Up
Down
Returns to main menu
6.
Sets year
Sets month
Sets day
LCD Display:
Energy generation display of selected month
Procedure:
Page 17 of 20 Rev. A
LCD Display:
Energy generation display of selected year
Procedure:
LCD Display:
7-4. Device status & Display
Status
LCD Display
PV module and battery are
connected and working well, but
it’s not connected to grid.
Inverter is charging battery from
PV energy.
The utility icon flashes.
PV module and battery are
connected and working well, but
it’s not connected to grid.
Inverter is powering loads from
PV and battery energy.
The utility icon flashes.
Battery is charging or discharging base on the PV input
power.
Page 18 of 20 Rev. A
There is no PV power available
and inverter is not connected to
grid. All loads are powered from
battery energy.
The PV
icon flashes. And The utility icon flashes too.
When PV energy is loss, the
utility
is powering the load and charging
battery.
The PV icon flashes.
When there is load connected, the utility will power the load
and the load icon will show up in the LCD display.
When PV energy is loss, the utility
is powering the load and charging
battery.
The PV icon flashes.
The load is connected, the utility will power the load and
charging battery.
B
attery
’
s
energy is low, the
PV
is
charging battery. At
the same time ,the utility is
powering the load
PV module an
d battery are
connected and working well, and
is connected to grid. Inverter is
powering loads from PV and
battery energy.
The utility is ok .So
The utility will not flash. Battery is charging or
discharging base on the PV input power.
Page 19 of 20 Rev. A
WARNING
: There are no user
-
replaceable parts
inside o
f
the
i
nverter. Do not attempt
to service the unit yourself.
8. Maintenance & Cleaning
Check the following points to ensure proper operation of whole solar system at regular intervals.
Ensure the inverter’s inlet and outlet is clean all the time.
Clean the PV modules, during the cool time of the day, whenever it is visibly dirty.
Periodically inspect the system to make sure that all wires and supports are securely fastened
in place.
9. Warning Situation
There are 5 situations defined as warnings. When a warning situation occurs, icon will flash
and the fault code area will display “WR” wordings.
standby mode
flash failure
Inverter initial failure
battery low
No battery
over load
Fault Reference Codes
When a fault occurs, the icon will flash as a reminder. See below for fault codes for
reference.
Fault event
Fault code
Icon
(flashing)
O
ver voltage
on Bus
1
U
nder voltage
on Bus
2
T
ime out
for
Bus soft start
3
T
ime out
for
Inverter soft start
4
Inverter over current
5
Over temperature
6
Relay fault
7
Output current sensor failure
8
H
igh voltage
on PV m
odule
9
DC input over current
11
GFCI
failure
12
PV insulation
failure
13
Inverter DC current over
14
Line value consistent fail between MCU & DSP
15
GFCI sensor fail
ure
16
Connect
ion
fail
ure
between MCU & DSP
17
Communication fail
u
re
between MCU & DSP
18
Ground loss
19
Discharge failure
20
T
ime out
for
discharge soft start
21
Battery over voltage
22
Over load
23
Page 20 of 20 Rev. A
10. Specifications
MODEL
Vertex 2K
Vertex 3K
RATED POWER
2000 W
3000 W
PV INPUT (DC)
Maximum DC Voltage
500 VDC
500 VDC
Work Voltage Range
100 VDC ~ 500 VDC
100 VDC ~ 500 VDC
Full Load MPP Voltage Range
170 ~ 450 VDC
250 VDC ~ 450 VDC
AC INPUT
Nominal AC Voltage
100/110/120/127
VAC
208/
2
2
0 VAC
230/240
VAC
Acceptable Voltage Range
85
-
1
4
5 VAC
1
75
-
265
VAC
1
75
-
2
80
VAC
Acceptable Frequency Range
57.5 ~ 62.5 Hz
47.5
～
5
2
.
5
Hz
Maximum Input Current
25 A
2
0
A
BATTERY MODE OUTPUT (AC)
Output Voltage
100/110/120/127
VAC
208/
2
2
0
/
230/240
VAC
Output Frequency
60 Hz
50 Hz
Output Waveform
Pure Sine Wave
THDv
<3% @ Linear Load
Power Factor
> 0.99
Efficiency (DC to AC)
90%
9
2
%
Overload Capability
110
％
5
min; 150%
1min; 20
0%
immediately
BATTERY & CHARGER
Nominal DC Voltage
48 VDC
Maximum Charging Current
25 A
PHYSICAL
Dimension, D X W X H (mm)
420 x 4
15 x 170
Net Weight (kgs)
15.5
INTERACE
Communication Port
RS
-
232/USB
Intelligent Slot
Optional SNMP card, Modbus card, GPRS card, and AS
-
400 card
available
ENVIRONMENT
Humidity
0 ~ 90% RH (No condensing)
Operating Temperature
0 to 40°C
Altitude
0
~ 1000 m*
* Power derating 1% every 100 m when altitude is over 1000m
** Product specifications are subject to change without further notice
/
