Astronergy 5KTL-M2 User manual

THE POWER OF ASTRONERGY
INSTALLATION & OPERATION MANUAL FOR
INVERTER OF 3.6~5KTL-M2

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INSTALLATION & OPERATION MANUAL
FOR INVERTER OF 3.6~5KTL-M2
1. Notes on this manual
1.1 Validity
1.2 Target Group
1.3 Safety
2. Astronergy Inverter
2.1 Overview
2.2 Identifying model and basic datasheet
3. Unpacking and inspection
4. Installation
4.1 Safety instructions
4.2 Selecting the INSTALLATION location
4.3 Fixed the mounting on the wall
4.4 Fixed the inverter on the wall
4.5 Check Ivewrter installation Status
5. Electrical Connection
5.1 System Diagram with Inverter
Electrical connection
5.2 Safety
5.3 Connecting to the grid (AC utility)
5.4 Connecting to PV Panels(DC input)
5.5 Selecting country by DIP switch
5.6 Commissioning
6. Display
6.1 LCD display
6.2 LCD control
6.3 Setting the LCD display
7. Modes of Operation
7.1 Normal mode
7.2 Fault mode
7.3 Shutdown mode
8. Inverter Status
9. Communitions
9.1 Monitoring Products
9.2 Communication Type
10. Trouble Shooting
11. System Fault
12. Inverter Failure
13. Specifications
14. Astronergy Factory warranty
15. Warranty conditions
16. Contact

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1. Notes on this manual
1.1 Installation manual
This manual describes the assembly, installation, commissioning and maintenance of the following Astronergy Inverters:
CHPI 3.6KTL-M2
CHPI 4.2KTL-M2
CHPI 5KTL-M2
This manual does not cover any details concerning equipment connected to the CHPI KTL-M2 ( e.g. PV modules). Information
concerning the connected equipment is available from the manufacturer of the equipment.
1.2 Target Group
This manual is for qualied personnel. Qualied personnel have received training and have demonstrated skills and knowledge
in the construction and operation of this device. Qualied Personnel are trained to deal with the dangers and hazards involved
in installing electric devices.
Additional information
Find further information on special topics in the down load area at www. astronergy. com
Notes: The manual and other documents must be stored in a convenient place and be available at all times.
1.3 Safety
Appropriate Usage
The Astronergy PV Inverter converts DC Current from PV generator into AC current. The Astronergy PV Inverter is suitable for
mounting indoors and outdoors.
You can use the AC current gernerated as follows:
Energy flows into the house grid. The consumers connected, for example, household devices or lighting, consume the
energy. The energy left over is fed into the public grid. When the Astronergy is not gernerating any energy, e.g., at night, the
consumers which are connected are supplied by the public grid.The Astronergy does not have its own energy meter. When
energy is fed into the public grid, the energy meter spins backwards.
Energy is fed directly into the public grid. The Astronergy is connected to a separate energy meter. The energy produced is
compensated at a rate depending on the electric power company.
House grid:
Public grid

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The Astronergy is connected to a stand-alone grid. A stand-alone grid is a grid which is not connected to a public grid ,the
Astronergy needs a grid-forming generator in order to function, The energy generated is consumed directly on site, surplus
energy can be stored in batteries.but the energy must not fed to the grid-forming generator. or it will destory the grid-forming
generator.
Alternative uses, modifications to the Astronergy PV inverter or the installation of component parts not expressly
recommended or sold by Astronergy are not permitted. Persons with limited physical or mental abilities may only work with
the Astronergy PV inverter following proper instruction and under constant supervision. Children are forbidden to play with
the Astronergy PV inverter. Keep the Astronergy PV inverter away from children.
DC and AC Switch
Separate the Astronergy CHPI KTL-M2 securely from the grid and the PV generators using DC and AC Switch. DC and AC Switch
shall be able to disconnect all unground conductors after installation.
Notes: The Astronergy CHPI KTL-M2 include a DC switch ,if you turn o it when inverter is working , please waiting 5 minutes
to turn on it again.
Grounding the PV modules
The CHPI KTL-M2 is a transformerless inverter. That is why it has no galvanic separation. Do not ground the DC circuits of the
PV modules connected to the CHPI KTL-M2. Only ground the mounting frame of the PV modules.
If you connect grounded PV modules to the CHPI KTL-M2, the error message “PV ISO Low”.
Qualication of Skilled Workers
• Knowledge of how an inverter works and is operated
• Instruction in how to deal with the dangers and risks associated with installing and using electrical devices and plants
• Training in the installation and commissioning of electrical devices and plants
• Knowledge of all applicable standards and guidelines
• Knowledge and observance of this manual and all safety instructions
Stand-alone grid:

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2. Astronergy Inverter
2.1 Overview
2.2 Identifying model and basic datasheet
You can identify the PV inverter by the type label.
It is on the left-hand side of the enclosure.
It includes follow information:
• The type of product (Type/Model).
• Device-specic characteristics.
• Certicates and approvals.
Model Name
PV Grid-connected Inverter
UDC max
IDC max
UDC range
VAC norm
fAC norm
PAC norm
IAC norm
PF (norm)
Protection Degree
Operation Ambient
Temperature
******************
***V
*A/**A
***V
***V
**Hz
*****W
**A
1.0
IP65
-25°C - +60°C
VDE-AR-N4105

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3. Unpacking and inspection
After opening the package, please check the contents of the box. It should contain the following:
Item Name Ouantity
A Solar inverter 1
B Mounting frame 2
C Safety-lock screws 2
D Mounting screws 4
E Mounting frame screws sleeve 4
F Monitor software(disk) 1 (Optional)
G manual 1
H Bluetooth 1 (Optional)
Notes: Please check all of the accessories carefully in the carton. If anything missing, contact your dealer at once. Thoroughly
inspect the packaging upon delivery, if you detect any damage to the packaging which indicates the inverter may be
damaged, inform the responsible transport company immediately. We will be glad to assist you if required.
A
B
D
E
C

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4. INSTALLATION
4.1 Safety instructions
• All electrical installations shall be done in accordance with the local and national electrical codes. Do not remove the
casing. Inverter contains no user serviceable parts. Refer servicing to qualied service personnel. all wiring and electrical
installation should be conducted by a qualied service personnel .
• Carefully remove the unit from its packaging and inspect for external damage. If you nd any imperfections, please contact
your local dealer.
• Be sure that the inverters connect to the ground in order to protect property and personal safety.
• The inverter must only be operated with PV generator. Do not connect any other source of energy to it.
• Both AC and DC voltage sources are terminated inside the PV Inverter. Please disconnect these circuits before servicing.
• This unit is designed to feed power to the public power grid (utility) only. Do not connect this unit to an AC source or
generator. Connecting Inverter to external devices could result in serious damage to your equipment.
• When a photovoltaic panel is exposed to light, it generates a DC voltage. When connected to this equipment, a photovoltaic
panel will charge the DC link capacitors.
• Energy stored in this equipment’s DC link capacitors presents a risk of electric shock. Even after the unit is disconnected
from the grid and photovoltaic panels, high voltages may still exist inside the PV-Inverter. Do not remove the casing until at
least 5 minutes after disconnecting all power sources.
• Although designed to meet all safety requirements, some parts and surfaces of Inverter are still hot during operation.
To reduce the risk of injury, do not touch the heat sink at the back of the PV-Inverter or nearby surfaces while Inverter is
operating.
• According to VDE-AR-N 4105,password is given for protection. For CEI 0-21, no password needed.
4.2 Safety instructions
• The installation method and mounting location must be suitable for the weight and dimensions of the inverter. Select a
wall or solid vertical surface that can support the PV-Inverter.
• Mount on a solid surface, the mounting location must be accessible at all times.

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• In living areas, do not mount the unit on plasterboard walls or similar to avoid audible vibrations. When in use, the inverter
emits noises which may be perceived as a nuisance in a living area.
• Vertical installation or tilted backwards by max. 15°.
• The connection area must point downwards.
• Do not install horizontally.
• Be sure that the inverter is out of the children’s reach.
• Don’t put any things on the inverter. Do not cover the inverter.
4.3 Safety instructions
• Inverter requires adequate cooling space. Providing better ventilation for the inverter to ensure the heat escape adequately.
The ambient temperature should be below 40°C to ensure optimum operation.
• Do not expose the inverter to direct sunlight, as this can cause excessive heating and thus power reduction.
• The ambient clearance needed is shown as following:
(a) Ambient dimensions of one inverter

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(b) Ambient dimensions of a series inverters
There must be sucient clearance between the individual inverters to ensure that the cooling air of the adjacent inverter is
not taken in.
If necessary, increase the clearance spaces and make sure there is enough fresh air supply to ensure sucient cooling of the
inverters.
• Using the mounting frame as a template, drill 4 holes as illustrated in image.
For CHPI 3.6KTL- M2

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For CHPI 4.2KTL- M2 and CHPI 5KTL- M2
• Fix the mounting frame as the gure shows. Do not make the screws to be ush to the wall. Instead, leave 2 to 4mm
exposed.
4.4 Fixed the inverter on the wall
• Hang the inverter on the mounting frame.
• Insert safety-lock screws to the bottom leg to secure the inverter.

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4.5 Check Inverter Installation Status
• Check the upper straps of PV-Inverter and ensure it ts on to the bracket.
• Check the secure mounting of the PV-Inverter by trying to raise it from the bottom. The PV-Inverter should remain rmly
attached.
• Select the installation location so that the status display can be easily viewed.
• Choose a strong mounting wall to prevent vibrations while inverter is operating.
5. Electrical Connection
5.1 System Diagram with Inverter Electrical connection
• The inverter must be installed only by trained and authorized electricians
• Before doing the electrical connection, both AC and DC end must be disconnected from all power sources. Always
disconnect the AC line rst, afterwards disconnect the PV lines.
• Be sure that the inverters connect to the ground in order to protect property and personal safety.
• PV Panel: Provide DC power to inverter.
• Converts DC (Direct Current) power from PV panel(s) to AC (Alternating Current) power. Because Inverter is grid-connected
it controls the current amplitude according to the PV Panel power supply. Inverter always tries to convert the maximum
power from your PV panel(s).
• Connection system: This “interface”between Utility and PV-Inverter may consist of electrical breaker, fuse and connecting
terminals. To comply with local safety standards and codes, the connection system should be designed and implemented
by a qualied technician.
• Utility: Referred to as“grid” in this manual, is the way your electric power company provides power to your place.
• we recommend electrical connection as follows:

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Position Description
A PV modules
B DC load circuit breaker
C Astronergy Inverter
D AC load circuit breaker
E Energy meter
F Utility grid
5.2 Safety
The Astronergy Inverter must be connected to the AC ground from the utilityvia the Ground Terminal (PE)
before wiring to the grid or PV panel!
5.3 Connecting to the grid (AC utility)
Suggestion: It is suggested that each inverter should have an individual AC breaker in order that the inverter can be
disconnected safely.
Note: The PV-Inverter system capacitance can’t over 13.8KVA, because the inverter’s displacement factor adjust function had
accorded to VDE-AR-N 4105. According to CEI 0-21, when the system capacity is smaller than 6KW, SPI needn’t to be modied,
PF value can be set to 0.95. When the system capacity is bigger than 6KW, SPI need to change to be ‘External’, PF value can be
set to 0.9.
The inverter is equipped with an integrated all-pole sensitive residual current monitoring unit. The inverter can automatically
distinguish between residual currents and“normal” capacitive leakage currents.

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5.3.1 Connection of the AC wiring
• Open the breaker or fuse between P V Inverter and utility.
• For the inverter , connecting AC wires as follows:
• the strip insulation length of L, N ,PE is 5mm.
• all wires through the shell and screw to the AC terminal connect
• screwing the shell to inverter and pressing screw cap tighten.
Wire requirements
Product Model _ (mm) Area(mm²) AWG no.
CHPI 3.6KTL-M2 _2.59 5.260 10
CHPI 4.2KTL-M2 _2.59 5.260 10
CCHPI 5KTL-M2 _2.59 5.260 10
5.4 Connecting to PV Panels(DC input)
Warning:
• Risk of electric shock and re, use only with PV modules with a maximum system voltage of 600Vdc!
• For instance, if the positive pole of a string is connected at input zone A and the string’s negative pole at input zone B, this is
called a mixed connection. Only connect strings at one input zone and never mix the input zones A and B!
Pin L
Pin N Ground
shell
pressing screw c
ap
terminal

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Danger:
• Before connecting the PV generator, ensure the DC-switch is switched o and that it cannot be reactivated.
• Do not disconnect the DC connectors under load.
There are two MPP trackers for Astronergy CHPI KTL-M2, you can connect two independent MPP channels.
• Under any condition! Make sure the maximum open circuit voltage (Voc) of each PV string is less than 600Vdc.
• Do not connect strings with an open circuit voltage greater than the Max. input voltage of the inverter. If the strings
voltage exceeds the Max. input voltage of the inverter, it can be destroyed due to overvoltage. All warranty claims
become void.
• Check the design of the PV plant. The Max. open circuit voltage, which can occur at solar panels temperature of -10 °C,
must not exceed the Max. input voltage of the inverter.
• Open the independent DC circuit breaker as well as the DC switch on the Astronergy CHPI KTL-M2 inverter.
• Before connecting PV panels to DC terminals, please make sure the polarity is correct. Incorrect polarity connection could
permanently damage the unit. Check short-circuit current of the PV string.
• Connect the positive and negative terminals from the PV panel to positive (+) terminals and negative (-) terminals on the
PV-Inverter. Each MPP tracker’s max. input current as follow:
15A for CHPI 5KTL-M2
15A for CHPI 4.2KTL-M2
10A for CHPI 3.6KTL-M2
• High voltages exist when the PV panel is exposed to the sun. To reduce risk ofelectric shock, avoid touching live
components and treat connection terminals carefully

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Cable requirements:
Product Model _ (mm) Area(mm²) AWG no.
CHPI 3.6KTL-M2 _2.59 5.260 10
CHPI 4.2KTL-M2 _2.59 5.260 10
CCHPI 5KTL-M2 _2.59 5.260 10
5.5 Selecting country by DIP switch
When the cables of AC side and DC side are all well connected, before commissioning, the country safety standard must be
selected by the DIP switch.
5.5.1 Location of the DIP switch
The DIP switch is located on the left of the RS 232 interface at the bottom of the inverter, as the gure below.
1. DC Connector 2. RS 232 Interface 3. Antenna
4. AC Connector 5. RS 485 Interface 6.DC Switch 7.ground point
NOTE: Before selecting country, please unscrew the dam-board of the DIP switch by appropriate tool.
DIP Switch
1
2
3
4
5
67

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The internal structure of the DIP switch is as the following gure:
5.5.2 DIP switch option corresponding to the country
The DIP switch is composed of four-digit binary number PINS. The dierent combination of the four PINS can represent the
last one character’s value of the inverter’s model, which is corresponding to dierent country. Each small white PIN has two
statuses, when set upward to ‘ON’, its value turns to ‘1’, when set downward, its value turns to‘0’. Concerning the matching of
the PIN status and the country, please refer to the table below:
CHPI KTL-M2 DIP switch to country table
DIP switch status Country Model display
VDE 0126 CHXXXXXXX1
AS4777 CHXXXXXXX3
CEI 0-21 CHXXXXXXX4
Spain CHXXXXXXX5
21
3
4

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DIP switch status Country Model display
Greece CHXXXXXXX6
VDE-AR-N 4105 CHXXXXXXX7
UK_G83 CHXXXXXXX8
Ireland CHXXXXXXX9
CGC CHXXXXXXXA
Denmark CHXXXXXXXB
UK_G59 CHXXXXXXXC
Belgium CHXXXXXXXD
Reserved CHXXXXXXXE
Reserved CHXXXXXXXF

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After setting the DIP, please power on the inverter and check the model display. If the last character of the model name is
corresponding to the country as the above table, it means your setting is successful.
Attention: you should change the time displayed on the LCD of inverter to your local time after inverter starts up.
NOTE: If the country is set incorrectly, please shut down the inverter and set again.
5.6 Commissioning
• When the PV panels are connected and their output voltage is greater than 100 Vdc(Min. input voltage) but the AC grid is
not yet connected, the message on the LCD display produce the following messages in order: “Astronergy Inverter”->
“Waiting”-> “No AC connection”. The display repeats “No AC connection” and the LED will be red.
• Close the AC breaker or fuse between PV-Inverter and grid. The normal operating sequence begins.
• When the voltage of the strings is greater than 150Vdc (start-up voltage), the inverter will check feeding conditions at once.
If there is anything wrong during checking, the inverter will turn into the “Fault” state.
• Under normal operating conditions the LCD displays“Power: xxxx.xW”. That is the power fed to the grid. The LED turns green.
• This completes the check.
6. Electrical Connection
6.1 LCD display
Starting-up display sequence, Once the PV power is sufficient, Inverter displays information as shown in the flow chart as
follow:
Module: xxxxxx
SerNo: xxxxxxxxxx
FW Version: x.x.x
Connect in: xxS
Connect : OK
xxxx.xVA xxxx.x W

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6.2 LCD control
To save power, the LCD display’s backlight automatically turns o after 30 seconds. The display on the inverter can be control
by Knock on the front of it.
The rst line will show some status of the inverter, there are 5 status listed in below table.
STATE DISPLAY CONTENT REMARK
Wait State
Standby PV voltage low
Waiting Initial waiting
Connect in xxS System checking
Reconnect in xxS System checking
Inverter State
Connect OK Connect to Grid
xxxx.xVA xxxx.x W Inverter watt at working
Fault State Error: xxx System Fault
Auto Test State Auto Testing Protection auto test
Program State Programming Update Software
While Astronergy inverter is working, the rst line will normally show Power status:
The Second line can change by knock on
CYCLE DISPLAY DISPLAY TIME/S REMARK
2 The inverter model
2 The software version
The Second Line Of LCD
The First Line Of LCD