Amerisolar AS-B2 Series User manual

User Manual of
PV Grid-Connected Inverter
AS-B2 Series (1500-6000)
Worldwide Energy and Manufacturing USA Co., Limited

Content
1. Safety.............................................................................................................1
1.1 Safety Announcements ........................................................................................................................................1
1.2 Requirements for Operator..................................................................................................................................3
1.3 Environment Requirements .................................................................................................................................3
2. Overview ........................................................................................................4
2.1 Product Features...................................................................................................................................................4
2.2 Appearance and Structure...................................................................................................................................4
3. Installation......................................................................................................7
3.1 Installation Process...............................................................................................................................................7
3.2 Installation Preparation.........................................................................................................................................7
Figure3-4 Installation way...........................................................................................................................................9
3.3 Transportation and unpacking.............................................................................................................................9
3.4 Installation.............................................................................................................................................................10
3.5 Electrical Connection..........................................................................................................................................13
3.6 Check the Installation..........................................................................................................................................20
4. LCD Operation .............................................................................................20
4.1 First Startup..........................................................................................................................................................21
4.2 Main Page.............................................................................................................................................................21
4.3 Main Menu Page .................................................................................................................................................22
4.3.1 Running Information ........................................................................................................................................22

5.Troubleshooting.............................................................................................29
5.1 Startup...................................................................................................................................................................29
5.2 Shutdown..............................................................................................................................................................29
6.Maintenance and Troubleshooting................................................................29
6.1 Maintenance.........................................................................................................................................................29
6.2 Troubleshooting...................................................................................................................................................29
7. Package, Transportation and Storage..........................................................32
7.1 Package................................................................................................................................................................32
7.2 Transportation......................................................................................................................................................32
7.3 Storage..................................................................................................................................................................32
8. A Technical Specifications............................................................................33

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1. Safety
This chapter introduces the safety announcements. Please read this user manual carefully
prior to installing the inverter. It provides important information on safe and efficient
installation.
1.1 Safety Announcements
CAUTION: Before operation, please read the announcements and operation instructions in
this part, which is to avoid accident.
The DANGER, WARNING, CAUTION in the manual, are not all the safety announcements
that must be abided by, they are just the supplement of the safety announcements during
operating.
NOTE: Amerisolar Company does not undertake the responsibility caused by violating
common safety operation requirements or the safety standard of design, manufacture and
use.
1.1.1 Safety Instructions
DANGER: It is prohibited touching any terminal or conductor that connected with grid circuit,
or, it may cause deadly danger.
DANGER: There is no operational part inside the inverter. Please do not open the crust of the
inverter by yourself, or it may cause electric shock. The inverter damage caused by illegal
operation is out of the guarantee range.
DANGER: The damaged device or device fault may cause electric shock or firing!
Before operating, please inspect the device and see if there is any damage or exist other
danger.
Check if the external devices or circuit connection is safe.
DANGER: Before checking or maintenance, if the DC side and AC side is power down just
now, it is necessary to wait for 5 minutes to ensure the inner device is completely discharged,
and then the operation can be performed.
HIGH TEMPERATURE: The surface temperature of the inverter may reach to 75℃. During
running, please don't touch the surface to avoid scald.
CAUTION: No liquid or other objects are allowed to enter the inverter.
CAUTION: In case fire, please use dry power fire extinguisher. If using liquid fire extinguisher,
it may cause electric shock.
1.1.2 Protection for PV Array
When install the PV array in the daytime, use light-proof material to cover the PV array, or,
under the sunshine, the PV array will generate high voltage. Once touch the PV array by

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accident, it may cause electric shock or endanger human life.
DANGER:There is deadly high voltage between the positive and negative of the PV array.
During installing, ensure that the connection between inverter and PV array is completely
disconnected and set warning marks at the disconnection to avoid reconnecting by accident.
1.1.3 Anti-Static Protection
CAUTION:The static electricity generated by human bodies may damage the
electrostatic-sensitive components on boards. Before touching the sensitive component,
please wear anti-static rings and well connect the other end of the anti-static rings to ground.
1.1.4 Grounding Requirements
WARING:High leakage risk! The inverter must be grounded before electrical connection. The
ground terminal must be connected to earth.
When installing, connect the grounding wire first; when dismantling, the grounding wire
must be removed at last.
It is prohibited to damage the grounding conductor.
The device must be connected with protection earthing permanently. Before operating,
please check the electric connection and ensure the device has been connected to earth
reliably.
1.1.5 Moisture-proof Protection
CAUTION: Moisture incursion may cause the inverter damage!
For normal use of the energy-storage converter, please comply with the following items.
If the atmosphere humidity larger than 95%, please do not open the inverter.
On overcast or rainy or moist condition, avoid opening the panel to maintain or do other
operation.
1.1.6 Safety Warning Label Setting
To avoid irrelevant person close to or misoperate the inverter, during installation or daily
maintenance, please abide by the related standards.
Set warning labels at the front end and back end of the inverter to avoid wrongly close and
even cause accident.
Set warning label board or safety warning area to avoid irrelevant person entering and
cause human injury or device damage.
1.1.7 Electrical Connection
The electrical connection must be done on the basis of the illustration and electrical wiring
principle mentioned in this manual.
WARING:The PV array and grid level, frequency, etc. must accord with the inverter’s
specification.

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The grid-connected generation must be allowed by local power supply department and
operate by professionals.
All the electrical connection must accord with the electrical installation standard of local nation
and district.
1.1.8 Measure with Electricity
CAUTION:There is dangerous high voltage, contacting by accident may lead to deadly
danger. So, when measure with electricity, it is necessary to do the protection (such as wear
insulated gloves, etc.)
The measure meter must accord with the following requirements.
The range and sue condition of the measure meter should conform to the site requirements.
Ensure that connection of the measure meter is proper and normative, which is to avoid the
danger of electric arc, etc.
1.2 Requirements for Operator
CAUTION:The related operation and wiring for the inverter should be performed by qualified
professionals, and ensure the electric installation accord with the electricity installation
standards.
The installation and maintenance man should be trained and know each safety
announcements and get the right operation method, and then, the installation, operation and
maintenance can be done.
The operator should be familiar with the constitution and work principle of the whole PV
grid-connected generation system.
The operator must be acquainted with the related standards of local nation and region.
1.3 Environment Requirements
CAUTION:Avoid the inverter suffering directly sunshine, rain or snow to prolong the service
life (detail please see 3.2.2 ). If the installation environment does not meet the requirement,
the guarantee time may be influenced.
The used environment may influence the service life and reliability of the inverter. So, please
avoid using the inverter in the following environment for long time.
The place where beyond the specification (normal work temperature:-30℃～60℃, relative
humidity: 0%-95%).
The place where has vibration or easy impacted.
The place where has dust, corrosive material, salty or flammable gas.
The place where without good ventilation or closed.

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2.Overview
This chapter mainly introduces the inverter features, appearance, operation panel, work
principle, etc.
2.1 Product Features
Efficiently power generation: adopt efficient HERIC inverter topology and advanced
completely digitized control technology.
Safe and reliable: adopt aluminium alloy to diecast the outer case, so that the inverter can
work in a widely temperature range.
Smart manage: smart cloud platform monitor and APP monitor. The inverter supports
RS485, GPRS and WIFI communication, and can be updated online.
Green and friendly: small size, easy installation and use, air cooling, low noise.
Better adaptability: with better grid adaptability, wide reactive power adjusting range.
2.2 Appearance and Structure
The appearance of the inverter is as shown in Figure2-1.
Figure2-1 Appearance of the inverter
2.2.1 Operation Panel
Figure2-2 Operation panel

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Table2-1 Illustration of the operation panel
Short press: less than 1s, Long press: more than 1s.
2.2.2 External Terminal Illustration
The external terminals are all located in the bottom of the inverter, including PV input, AC
output, communication port and DC switch, etc, as shown in Figure2-3.
Figure2-3 Bottom view
Table2-2 Terminals illustration

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NOTE:When the DC SWITCH and COM. is not selected, the corresponding port is filled
with a waterproof plug.
DC switch
DC switch (as shown in Figure2-5 ○1 ) is the connection switch of inverter and PV
array. When the inverter works normally, the DC switch must be ON. During installation and
wiring, the DC switch must be OFF. Before maintenance, the DC switch must be OFF for 20
minutes, and measure the voltage of DC busbar by multimeter, only when the voltage less
than 10V, the maintenance can be done.
CAUTION:when maintenance or wiring, the DC switch must be disconnected.
2.3 Work Principle
The inverter connects with PV array input and tracks the maximum power point of the PV
array, and then converts the DC power into single-phase AC power by inverter circuit. It also
provides surge protection at DC and AC side, as shown inFigure2-4, Figure2-5.
Figure2-4 Work principle diagram of AS1500-B2, AS2000-B2
Figure2-5 Work principle diagram of AS3000-B2, AS3600-B2, AS4000-B2, AS4600-B2,
AS5000-B2, AS6000-B2

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3. Installation
3.1 Installation Process
Figure3-1 Installation process
3.2 Installation Preparation
3.2.1 Tools
CAUTION:The installation tools must be insulated to avoid electric shock.

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3.2.2 Installation Environment
Do not install the inverter in the place with poor ventilation.
Ensure that there has sufficient fresh-air supply around the inverter.
To ensure long service life and stable operation, avoid direct sunshine, rain or snow on the
inverter. It is recommended to install the inverter in the place where has cover, as shown in
Figure3-2.
Recommended installation direction: do not install the inverter under directly sunshine. The
countries in southern hemisphere (such as Australia, New Zealand) cannot install the inverter
towards north, the countries in northern hemisphere (such as the Netherlands, Spain) cannot
install the inverter towards south.
Figure3-2 Recommended installation site
The inverter must be installed on the wall or supporter with enough bearing capacity.
Consider the visibility of indicators and LCD.
3.2.3 Installation Space
Keep at least 500mm from the left and right side of the inverter to other objects or inverters,
keep at least 600mm from the top of the inverter to ceiling and keep at least 600mm from
bottom of the inverter to ground, which is good for heat dissipation or maintenance, as shown
in Figure3-3.
Figure3-3 Installation space (unit: mm)

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3.2.4 Installation Way
Figure3-4 Installation way
3.3 Transportation and unpacking
3.3.1 Transportation
The inverter should be transported by trained professional.
CAUTION:During transporting, please take care and avoid impacting or dropping.
3.3.2 Unpacking and Checking
NOTE:Select the unpacking site in advance. In principle, the unpacking site should be as
close to the installation site as possible.
The inverter has been tested and checked strictly, but it still may be damaged during
transporting, so, please check it carefully.
Inspect the inverter's appearance, if any shipping damage is found, report it to the carrier
and your local dealer immediately.
Check if the types of the accessories are complete and correct. If there is any discrepancy,
take notes and contact the distributor immediately.
Figure3-5 Packing list
NOTE:
1. For AS1500-B2 and AS2000-B2, we provide 1 pair of DC terminals, for other models, we
provide 2 pairs of DC terminals.

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2. WIFI/GRPS and smart meter are optional, they are provided according to the contract.
3. The hexagonal wrench is packaged in the AC connector.
CAUTION:If the inverter needs to be stored for a long time after unpacking, it is necessary to
pack the inverter by original package and save properly.
3.4 Installation
The inverter can be installed on the wall or metal holder through equipped installation holder.
CAUTION:Vertical installation is perfect. If it should be tilt, the vertical gradient should not
exceed ±15°.
In this section, we take wall installation as example to illustrate, if you need to install the
inverter on metal installation holder, please adjust the installation step correspondingly.
Step 1 Determine the installation place based on the inverter size (as shown in Figure3-6)
and installation space (as shown in 3.2.3 Installation Space).
Figure3-6 Size (unit: mm)
Step 2 Mark the position of installation holes on the wall according to the dimensions of the
fixing holes of the installation holder (as shown in Figure3-7), and drill 4 holes of Φ8.5mm on
the wall according to marked position, as shown in Figure3-8
Figure3-7 Optimized installation size (unit: mm)

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CAUTION:When installation, please keep the installation holder horizontal.
Figure3-8 Mark the drilling position
NOTE:The depth of drilled holes should be within 45~55mm. Clear the dust and measure the
net depth. Ensure that the depth of four holes is the same.
Step 3 Install the equipped 4 expansion plugs into the holes, as shown in Figure3-9.
Figure3-9 Install expansion plugs
Step 4 Align the holes of installation holder with the expansion plugs and install the
self-tapping screws and flat gasket into the expansion plugs (as shown in Figure3-10) and
fasten them by screwdriver.
Figure3-10 Fasten the installation holder
Step 5 Uplift the inverter and hang the inverter to the installation holder, as shown in

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Figure3-11.
CAUTION:Do not loosen the inverter until the inverter has been hang in the installation holder
completely.
Figure3-11 Hang the inverter to installation holder
Step 6 Fasten the inverter to the installation holder by 2 stainless steel combination bolt
M5*12 (as shown in Figure3-12), and then lock it. The lock position is as shown in Figure3-13.
Figure3-12 Fasten the inverter
Figure3-13 Position of lock (The lock customer provided)
----End

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3.5 Electrical Connection
3.5.1 Wire Requirement
The wiring of the inverter is all at the bottom, as shown in Figure2-5and Table2-2. The
corresponding recommended wire specification as shown in Table3-1.
Table3-1 Wire specification
3.5.2 External Grounding Connection
The external grounding terminal is as shown in Figure2-5 ⑦
WARNING:The external grounding wire cannot replace the PE wire of AC output terminal,
they must be connected with ground reliably.
Step 1 Strip the insulation layer of grounding wire for about 7mm, insert the wire into OT
terminal and crimp them by crimping tool, the as shown in Figure3-14.
Figure3-14 Stripping diagram of external grounding wire (unit: mm)
Step 2 Connect the crimped grounding wire to the external grounding terminal, as shown in
Figure3-15.
Figure3-15 External grounding wire connection
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3.5.3 DC Input (PV) Connection
When installation, it must use the equipped DC terminals to avoid inverter damage.
It is recommended to use independent breaker for each PV input, and before connecting,
the breakers must be off. We suggest to use the special DC breaker (rated voltage is 600V,
rated current is more than 20A).
Switch off the DC switch and external DC breakers before connecting the PV array.
Ensure that the connection between PV array and the inverter at positive pole and
negative pole is correctly.
The DC input voltage should be less than the max. input voltage of the inverter.
It's forbidden to connect the grounding wire with positive pole or negative pole of PV array,
or it will lead to inverter damage.
Use the equipped PV connector and metal terminal to connect the PV input. The PV
connecter includes positive connecter and negative connector, they match the corresponding
positive metal terminal and negative terminal, corresponding procedure as follows.
Step 1 Strip the insulation layer ofpositive wire and negative wire for about 7mm, as shown
in Figure3-16.
Figure3-16 Stripping diagram of DC input (unit: mm)
NOTE:It is recommended to use red wire as the positive wire, use black wire as negative wire
to avoid wrong connection. If using the wires of other colour, please confirm the
corresponding connection relationship.
Step 2 Unscrew the lock nut of positive and negative connection, lead the positive and
negative wires go through corresponding lock nut, and then insert the positive wire and
negative wire into the positive metal terminal and negative metal terminal respectively. Crimp
the metal terminals firmly by crimping pliers, as shown in Figure3-17.
Figure3-17 Crimp the metal terminal

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Step 3 Insert the positive wire and negative wire into corresponding insulation crust
respectively. If there has a click sound, it means that the wire have been inserted properly, as
shown in Figure3-18.
Figure3-18 Fasten the metal terminal
Step 4 Tighten the sealing nuts of positive connector and negative connector to the
corresponding insulation crusts respectively, as shown in Figure3-19.
Figure3-19 Tighten the sealing nuts
Step 5 Measure the voltage and check if the positive and negative is connected properly
and if the voltage within the input range of the inverter.
Step 6 Insert the positive connector and negative connector to the PV + and PV –
terminals (as shown in Figure3-20) and tighten them. If there has a click sound, it means that
the connector have been inserted properly.
Figure3-20 Connect the DC connector
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3.5.4 AC Output (GRID) Connection
CAUTION:
It's forbidden that several inverters shares an AC switch.
It's forbidden to connect with load between inverter and AC switch.
To ensure the inverter can be disconnected with load safely, we suggest equipping
independent dipolar breaker for each inverter to protect the inverter.
Table3-2 Recommended AC breaker specification
CAUTION:During wiring, please pay attention to distinguish the AC live wire, neutral wire and
grounding wire.
Step 1 Strip the insulation layer of AC live wire (L), neutral wire (N) and grounding wire (PE)
for about 7mm, as shown in Figure3-21.
Figure3-21 Stripping diagram of AC output (unit: mm)
NOTE:It is recommended to use brown or red wire as the live wire, use blue or white wire as
neutral wire and use yellow-green wire as PE wire to avoid wrong connection. If using the
wires of other color, please confirm the corresponding connection relationship.
Step 2 Unscrew the lock nut and waterproof of AC connector (as shown in Figure3-22), lead
the live wire, neutral wire and grounding wire go through the lock and crimp them to

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corresponding port of AC connector.
NOTE:When crimping the wires, please ensure the live wire, neutral wire and PE wire are
connected to the corresponding port of AC connector.
Figure3-22 AC connector
Figure3-23 Connect the wires of AC connector
CAUTION:There is L, N, PE mark on the AC connector, the wire connection must be accord
with the mark correspondingly.
Step 3 Insert the AC connector to the GRID port (as shown in Figure3-24) and lock it.
Figure3-24 Insert the AC connector
When inserting the AC connector, please pay attention to the gap on the AC connector and
make it align the heave on the GRID port, avoid damaging the connector.
CAUTION: When inserting the AC connector, please pay attention to the gap on the AC
connector and make it align the heave on the GRID port, avoid damaging the connector.
----End