INVT iMars Series User manual

Operation Manual
iMars series
PV Energy Storage Inverter
INVT Solar Technology (Shenzhen) CO., LTD

1
Preface
The manual is intended to provide detailed information of product information, installation,
application, trouble shooting, precautions and maintenance of iMars series energy storage
inverters. The manual does not contain all the information of the energy storage system. Please
read this manual carefully and follow all safety precautions seriously before any moving,
installation, operation and maintenance to ensure correct use and high performance of operation
on the inverter.
The use of the iMars series energy storage inverters must comply with local laws and regulations
on grid-tied power generation.
The manual needs to be kept well and be available at all times.
All rights reserved. The contents in this document are subject to change without notice.
There may be data deviation because of product improving. Detailed information is in accordant
with the final product.

iMars series PV energy storage inverter Content
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Content
Preface................................................................................................................................................ 1
Content ............................................................................................................................................... 2
1 Safety precautions........................................................................................................................... 5
1.1 Warning marks.........................................................................................................................................6
1.2 Safety guidance.......................................................................................................................................6
1.3 Delivery and installation.........................................................................................................................8
1.3.1 Grid-tied operation.........................................................................................................................9
1.3.2 Maintenance and inspection........................................................................................................9
1.3.3 What to do after scrapping........................................................................................................ 10
2 Product overview........................................................................................................................... 11
2.1 Energy storage system....................................................................................................................... 11
2.2 Product appearance............................................................................................................................ 12
2.2.1 Key component description...................................................................................................... 12
2.2.2 Nameplate.................................................................................................................................... 13
2.2.3 DRM instruction........................................................................................................................... 14
2.3 Product models..................................................................................................................................... 15
2.4 Dimensions and weight....................................................................................................................... 15
3 Storage .......................................................................................................................................... 17
4 Installation...................................................................................................................................... 18
4.1 Unpacking inspection.......................................................................................................................... 18

iMars series PV energy storage inverter Content
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4.2 Before installation ................................................................................................................................ 20
4.2.1 Installation tools........................................................................................................................... 20
4.2.2 Specification of cable................................................................................................................. 23
4.2.3 Circuit breaker ............................................................................................................................. 24
4.3 Mechanical installation........................................................................................................................ 24
5 Electrical connection ..................................................................................................................... 26
5.1 PV connection....................................................................................................................................... 27
5.1.1 Procedures of PV connection .................................................................................................. 28
5.2 Grid and load connection ................................................................................................................... 31
5.3 Battery connection............................................................................................................................... 33
5.4 CAN communication connection ...................................................................................................... 34
5.5 RS-485 communication connection................................................................................................. 35
5.6 USB connection (reserved)................................................................................................................ 36
5.7 DRM ports.............................................................................................................................................. 37
6 LCD operation instructions............................................................................................................ 38
6.1 LED indicator instruction......................................................................................................................... 38
6.2 LCD display instruction ............................................................................................................................ 38
6.2.1 Key instruction............................................................................................................................. 38
6.2.2 Instruction for main page........................................................................................................... 38
6.2.3 Icon instruction ............................................................................................................................ 39
6.3 Display menu ........................................................................................................................................ 40
6.4 Inverter parameter setup.................................................................................................................... 42

iMars series PV energy storage inverter Content
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6.4.1 Parameter classification page.................................................................................................. 42
6.4.2 Parameter edit mode ..................................................................................................................... 42
6.4.3 Instruction for setup parameter................................................................................................ 43
7 Working mode ............................................................................................................................... 46
7.1 Mode 1(Self-consumption)................................................................................................................. 46
7.2 Mode 2(Peak- shaving and valley-filling)........................................................................................ 47
7.3 Mode 3(EPS)......................................................................................................................................... 47
8 Fault code...................................................................................................................................... 48
9 Technical parameter...................................................................................................................... 50
10 Contact us.................................................................................................................................... 52

iMars series PV energy storage inverter Safety precautions
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1 Safety precautions
iMars series energy storage inverters are designed and tested strictly in accordance with relevant
international safety standards. As an electrical and electronic device, all relevant safety regulations
must be strictly complied during installation, operation, and maintenance. Incorrect use or misuse
may result in：
Injury to the life and personal safety of the operator or other people.
Damage to the inverter or other property belonging to the operator or other people.
In order to avoid personal injury, damage to the inverter or other devices, please strictly observe
the following safety precautions.
This chapter mainly describes various warning symbols in operation manual and provides safety
instructions for the installation, operation, maintenance and use of the iMars series energy storage
inverters.
Statement
Our company reserves the right not to perform quality assurance in any of the following cases.
Damage caused by transportation.
The storage conditions do not meet the requirements of the product specification, resulting
Incorrect storage，installation and use.
Unqualified personnel install and operate the inverter.
Operate in harsh environments that exceed product specifications.
Exceed the operation range of parameters that specified in the technical specification.
Unauthorized disassembly, modification, or modification of the software code.
Equipment damage caused by abnormal natural environment (force majeure, such as
lightning strikes, earthquakes, fires, storms, etc.).
The warranty period is exceeded and the warranty service is not extended.
Exceeding the installation and operating environment specified in the relevant international
standards.

iMars series PV energy storage inverter Safety precautions
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1.1 Warning marks
Warning marks inform users of conditions which can cause serious physical injury or death, or
damage to the device. They also tell users how to prevent the dangers. The warning marks used in
this operation manual are shown below:
Mark
Name
Instruction
Abbreviation
Danger
Danger
Serious physical injury or even death may
occur if not follow relevant requirements.
Warning
Warning
Physical injury or damage to the device may
occur if not follow relevant requirements.
Forbid
Electrostatic
sensitive
Damage may occur if relevant requirements
are not followed.
Hot
High
temperature
Do not touch the base of the inverter as it will
become hot.
Note
Note
The procedures taken for ensuring proper
operation.
Note
1.2 Safety guidance
After receiving this product, first confirm the product package is intact. If
any question, contact the logistic company or local distributor
immediately.
The installation and operation of inverter must be carried out by
professional technicians who have received professional trainings and
thoroughly familiar with all the contents in this manual and the safety
requirements of the electrical system.

iMars series PV energy storage inverter Safety precautions
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Do not carry out connection/disconnection, unpacking inspection and
unit replacement operations on the inverter when power source is
applied. Before wiring and inspection, users must confirm the breakers
on DC and AC side of inverter are disconnected and wait for at least 5
minutes.
Ensure there is no strong electromagnetic interference caused by other
electronic or electrical devices around the installation site.
Do not refit the inverter unless authorized.
All the electrical installation must conform to local and national electrical
standards.
Do not touch the housing of the inverter or the radiator to avoid scald as
they may become hot during operation
Ground with proper technics before operation.
Do not open the surface cover of the inverter unless authorized. The
electronic components inside the inverter are electrostatic sensitive. Do
take proper anti-electrostatic measures during authorized operation.
The inverter needs to be reliably grounded.
Ensure that DC and AC side circuit breakers have been disconnected
and wait at least 5 minutes before wiring and checking.
Note: Technical personnel who can perform installation, wiring, commissioning,
maintenance, troubleshooting and replacement of the energy storage inverters must
meet the following requirements:
Operators need professional training.
Operators must read this manual completely and master the related safety precautions.
Operators need to be familiar with the relevant safety regulations for electrical systems.
Operators need to be fully familiar with the composition and operating principle of the
entire energy storage system and related standards of the countries/regions in which the
project is located.

iMars series PV energy storage inverter Safety precautions
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Operators must wear personal protective equipment.
1.3 Delivery and installation
Keep the package and unit complete, dry and clean during storage and delivery.
Please remove and install the inverter with two or more people, because of the
inverter is heavy.
Remove and install the inverter with appropriate tools to ensure safe and normal
operation and avoid physical injury or death. The people also need mechanical
protective measures, such as protective shoes and work clothes.
Only qualified electricians are allowed to install the inverter.
Do not put and install the inverter on or close to combustible materials.
Keep the installation site away from children and other public places which is
easy to access.
Remove the metal jewelry such as ring and bracelet before installation and
electrical connection to avoid electric shock.
The solar panel exposed to the sunlight may generate dangerous voltage. Users
must cover the solar panel with fully-lightproof materials before electrical
connection
The inverter input voltage should not exceed the maximum input voltage,
otherwise inverter damage may occur.
The positive and negative pole of solar modules can not be grounded, otherwise
irrecoverable damage may occur.
Ensure the proper grounding of the inverter.
Ensure reliable installation and electrical connection.
Note: iMars BD series energy storage inverters are only for crystalline silicon solar
modules.

iMars series PV energy storage inverter Safety precautions
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1.3.1 Grid-tied operation
Only qualified electricians are allowed to operate the inverter under the
permission of local power departments.
All electrical connections must meet the electrical standards of the
countries/regions in which the project is located.
Ensure reliable installation and electrical connection before operation.
Do not open the cover of inverter during operation or voltage is present.
1.3.2 Maintenance and inspection
Only qualified electricians are allowed to perform the maintenance, inspection,
and components replacement of the inverter.
Contact with the local dealer or supplier for maintenance.
In order to avoid irrelevant personnel from entering the maintenance area during
maintenance, temporary warning labels must be placed to warn non-professionals
to enter or use fence for isolation.
Before carrying out any maintenance operations, all input power to the inverter
must be disconnected first and wait for at least 5 minutes until the internal parts of
the inverter are fully discharged.
Please follow electrostatic protection norms and take correct protective measures
because of the electrostatic sensitive circuits and devices in the inverter.
Do not use parts and components not provided by our company during
maintenance.
Restart the inverter after settling the fault and problem which may affect the safety
and performance of the inverter.
Do not get close to or touch any metal conductive part of the grid or inverter,
otherwise electric shock, physical injury or death and fire may occur. Please do not
ignore the warning icons and instructions with “electric shock”.

iMars series PV energy storage inverter Safety precautions
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1.3.3 What to do after scrapping
Do not dispose of the inverter together with household waste. The user has the
responsibility and obligation to send it to the designated organization for recycling
and disposal.

iMars series PV energy storage inverter Product overview
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2 Product overview
This chapter mainly describes the appearance, packaging accessories, nameplate, and other
information of iMars series energy storage inverters.
2.1 Energy storage system
Figure 2.1 Energy storage system
No.
A
B
C
D
E
Name
PV module
Energy storage
inverter
Battery
Public grid
Load

iMars series PV energy storage inverter Product overview
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2.2 Product appearance
2.2.1 Key component description
Figure 2.2.1 Appearance diagram of 3~5kW energy storage inverter
No.
Name
Silk screen
1
Operation display panel
/
2
PV input terminal
TrackA、TrackB
3
E-stop switch
ON/OFF
4
AC terminal
GRID
5
Load terminal
LOAD
6
RS485 communication interface
RS485-2/1
7
Communication interface
COMM/ DRM Communication port
8
RS485 communication interface
RS485-3
9
USB interface
USB
10
Lithium battery CAN communication interface
CAN
11
Battery terminal
BAT

iMars series PV energy storage inverter Product overview
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2.2.2 Nameplate
Figure 2.2.2 Nameplate for inverter

iMars series PV energy storage inverter Product overview
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（1）Trademark and product type
（2）Model and important technical parameters
（3）Certification system of the inverter confirming
（4）Serial number, company name and country of origin
Icons
Instruction
TUV certification mark. The inverter is certified by TUV.
CE certification mark. The inverter complies with the CE directive.
CQC certification mark. The inverter passed CQC certification.
2.2.3 DRM instruction
Figure 2.2.3DRM label
Table 2-2 DRMs instruction
No.
Mode
Requirement
1
DRM0
Operter the disconnection devise
2
DRM1
Do not consume power
3
DRM2
Do not consume at more than 50% of rated power
4
DRM3
Do not consume at more than 75% of rated power AND Source reactive
power if capable
5
DRM4
Increase power consumption(subject to constraints from other active DRMs)

iMars series PV energy storage inverter Product overview
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No.
Mode
Requirement
6
DRM5
Do not generate power
7
DRM6
Do not generate at more than 50% of rated power
8
DRM7
Do not generate at more than 75% of rated power AND Sink reactive power if
capable
9
DRM8
Increase power generation(subject to constraints from other active DRMs)
Note: Our product only realize the DRM0 function
2.3 Product models
Product name
Model
Rated output power （W）
Single phase （L、N、PE）
Single-phase energy storage inverter
3kW
3000
Single-phase energy storage inverter
5kW
4600
Note: Technical parameters of iMars series energy storage inverter refers to appendix.
2.4 Dimensions and weight
Figure 2.4 Dimensions of the energy storage inverter

iMars series PV energy storage inverter Product overview
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Inverter dimension and net weight
Model
H(mm)
W(mm)
D(mm)
Net weight (kg)
3kW/5kW
622
425
190
19
W
H
D
Figure 3.3 Paper package size
Package size and gross weight
Model
H(mm)
W(mm)
D(mm)
Weight(kg)
Packaging Material
3kW/5kW
760
555
328
25
Paper

iMars series PV energy storage inverter Storage
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3 Storage
If the inverter is not put into use immediately, the storage of inverter should meet the following
requirements:
Do not remove the outer packing.
The inverter needs to be stored in a clean and dry place, and prevent the erosion of dust and
water vapor.
The storage temperature should be kept at -30°C~+70°C, and the relative humidity should
be kept at 5%RH~95%RH.
The stacking of inverters is recommended to be placed according to the number of stacking
layers in the original shipment. Place the inverter carefully during stacking to avoid personal
injury or equipment damage caused by the falling of equipment.
Keep away from chemically corrosive substances that may corrode the inverter.
Periodic inspections are required. If damages are found by worms and rats, or packages are
found to be damaged, the packaging materials must be replaced in time.
After long-term storage, inverters need to be inspected and tested by qualified personnel before
put into use.

iMars series PV energy storage inverter Installation
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4 Installation
This chapter describes the installation of the inverter and the connection of the inverter to the
energy storage system. It mainly involves the connection of the PV string, the public power grid,
the battery, and the load to the inverter. Read this chapter carefully and ensure all installation
requirements are met before installation. Only qualified electricians are allowed to install the
inverter.
4.1 Unpacking inspection
The inverter has been thoroughly tested and rigorously checked before delivery, but damage may
still occur during transportation. Before unpacking, check carefully whether the product information
in the order is consistent with that on the nameplate of the package box and whether the product
package is intact. If any damage is detected, please contact the shipping company or the supplier
directly. Please also provide photos of the damage to get our fastest and best service.
Store the idled inverter in its original package and take anti-moisture and anti-dust measures.
After taking the inverter out of the box, check the following items:
(1) Confirm the main body of the inverter is intact and free from any damage;
(2) Confirm there is operation manual, interface accessories and installation accessories
inside the package box;
(3) Confirm the deliverables inside the package box are intact and complete;
(4) Check whether the product information in the order is consistent with that on the inverter
nameplate;
(5) The standard delivery list is shown below.