Jntech JNP1K1L-G User manual

I
Solar Pumping Inverter
用户手册
User Manual
JNP1K1L-G
JNP1K5L-G
JNP2K2L-G
JNP2K2L-G-V3-EN-V3.0

I
The copyright belong to Our company.
This document involves the proprietary and confidential information about Solar
pumping inverter of Our company. It strictly prohibited to disclose the document by
duplicating, photocopying, publishing online and in other forms without Our permission.

III
Preface
Manual Instruction
This manual describes the transportation, installation, operation, maintenance
and troubleshooting of the following JNP inverters:
●JNP1K1L-G
●JNP1K5L-G
●JNP2K2L-G
In order to describe conveniently later, JNP1K1L-G, JNP1K5L-G, JNP2K2L-G
will be short for JNPxL-G, Solar pumping inverter will be short for inverter. The
inverter type shall be pointed alone, when introduce the information about each
type of inverter in details.
Target Reader
This manual applies to the professional engineering and technical person who
is responsible for installing and operating of inverter and LCD panel.
Use the Manual
Please read this manual carefully before installing and operating inverter.
Please keep this manual well for operation and maintenance in future.
The manual content would be constantly updated and revised, but it
unavoidably has slightly discrepancies or errors with real inverter, please kind
prevail if user purchases our inverter.
Symbol Used
The following safety symbols may be used in this manual, and the meanings
are shown in below.

IV
Safety Symbol
Meaning
Danger!
Means that it may lead to serious accident of injuries, if safety
warning is ignored.
Warning!
Means that it may lead to serious accident of injuries,
equipment serious damage or main business interruption, if
safety warning is ignored.
Notice!
Means that it may lead to moderate accident of injuries,
equipment moderate damage or part of the business
interruption, if safety warning is ignored.
Note!
Means that the content is additional information.
Inverter related symbols:
Symbol
Meaning
DC power (DC).
AC power (AC).
Protective grounding .
Refer to relevant instructions.
Can not discard inverter together with domestic garbage .
Beware of dangerous high-voltage.

V
Should wait for 5 minutes after inverter and PV panel are disconnected, then
inverter only can be touched.
Beware of hot surface.
The inverter temperature can exceed 60℃during operation. Please don’t
touch the surface to avoid scald.
CE certification marks. It means that inverter complies with the
requirement of CE certification.

VI
CONTENT
PREFACE .................................................................................................. III
MANUAL INSTRUCTION ................................................................................... III
TARGET READER ............................................................................................ III
USE THE MANUAL ......................................................................................... III
SYMBOL USED .............................................................................................. III
1 SAFETY INSTRUCTIONS............................................................................ 1
2 PRODUCTION INTRODUCTION.................................................................. 6
2.1 SOLAR PUMPING SYSTEM INTRODUCTION ........................................................ 6
2.2 PRODUC T ’SINTRODUCTION ......................................................................... 8
2.2.1 Appearance .................................................................................... 8
2.2.2 Production Dimensions ................................................................... 9
2.2.3 Product Name ................................................................................ 9
3 INVERTER UNPACKING ...........................................................................10
3.1 UNPACKING CHECK .................................................................................. 10
3.2 IDENTIFY INVERTER.................................................................................. 11
4 INSTALLATION PROCEDURE.....................................................................13
4.1 PREPARE INSTALLATION TOOLS ................................................................... 13
4.2 INSTALLATION STEPS ................................................................................ 13
5 INSTALLATION .......................................................................................15
5.1 INSTALLATION SITE REQUIRED .................................................................... 15

VII
5.2 INSTALLATION DIRECTION .......................................................................... 16
5.3 INSTALLATION OF INVERTER ........................................................................17
6 ELECTRICAL CONNECTION.......................................................................19
6.1 CONNECTING TERMINALS OF INVERTER ......................................................... 19
6.2 SCHEMATIC DIAGRAM OF ELECTRICAL CONNECTION ..........................................20
6.3 CABLE SELECTION ................................................................................... 22
6.4 AC SIDE ELECTRICAL CONNECTION .............................................................. 23
6.5 DC SIDE CONNECTION ...............................................................................25
6.6 AC INPU T CONNECTION ............................................................................ 28
6.7 WATER LEVEL SENSOR CONNECTION ............................................................ 30
6.7.1 Water level sensor interface define ............................................... 30
6.7.2 Water level sensor connection....................................................... 31
6.8 COMMUNIC ATION CONNECTION .................................................................. 34
6.8.1 RS485 Communication .................................................................. 34
6.8.2 GPRS Communication.................................................................... 35
6.9 DISASSEMBLING ...................................................................................... 36
6.9.1Safety Instruction .......................................................................... 36
6.9.2 Disassembling of Connector .......................................................... 36
6.9.3 Mounting and dismounting of cover panel ..................................... 38
7 COMMISSIONING ..................................................................................40
7.1 VERIFY BEFORE COMMISSIONING ................................................................ 40
7.2 INVERTER COMMISSIONING ....................................................................... 40
7.3 STOP FREQUENCY SETTING ........................................................................ 42
7.4 TIME CALIBRATION .................................................................................. 43
8 LCD PANEL OPERATING INSTRUCTIONS ....................................................44

VIII
8.1 INVERTER LCD DISPLAY ............................................................................ 44
8.1.1 LED Indicator Direction ................................................................. 44
8.1.2 Description of Buttons .................................................................. 45
8.1.3 LCD Display Interface Overview ..................................................... 46
8.2 INITIAL OPERATIONAL INTERFACE ................................................................ 49
8.3 SYSTEM PARAMETER QUERY AND SETTING ...................................................... 50
8.3.1 Query information item description ............................................... 50
8.3.2 Setting information item description ............................................. 56
8.3.3 Information Check .........................................................................62
8.3.4 Parameter Setting......................................................................... 64
8.4 MALFUNCTION INSTRUCTION ..................................................................... 66
9 MALFUNCTION AND TROUBLESHOOTING .................................................68
9.1 TROUB LESHOOTING ................................................................................. 68
9.2 MAINTENANCE ........................................................................................72
9.3 CONTACT CUSTOMER SERVICE .....................................................................73
10 APPENDIX A ........................................................................................74
11 APPENDIX B ........................................................................................ 76
11.1 QUALITY ASSURANCE ..............................................................................76
11.2 CONTACT US .................................................................................... 77

1
1 Safety Instructions
For the electrical and electronics equipment, safety relates to the whole process of
installation, commissioning, operation and maintenance. Therefore, incorrect use or
operation would damage the life and personal security of operating person or the third
party, and inverters.
In order to reduce casualties, damage of inverter and other equipments, user or
operating person should strictly abide by all the safety information tips of danger,
warning and notice which are in the process of operating and maintaining.
Warning！
All the installation and operation of JNPxL-G series Solar pumping inverter must be
completed by professional and technical person. Professional and technical person need:
●Receive special training
●Read this manual completely and master the operation related to safety matters. Any
damage caused by improper installation or operation which do not according to the
introduction in this manual will be beyond the warranty scope of Our company.
Before installation
Notice！
Please inspect the inverter whether there is any damage or not, which may caused during
transportation. Please contact Our company or transportation company immediately if
some problems of inverter are found.
Installing
Ensure inverter not have electrical connections and electricity before installing.

2
Danger！
The solar cell arrays should be covered with opaque materials when installing the
photovoltaic arrays during the day, otherwise the solar cell arrays will generate high
voltage ,causing person casualties.
Electrical connections
Danger！
Ensure that the solar cell array should be covered by light tight materials, before electrical
connecting, otherwise, the solar cell array would produce high voltage under the sun to
cause casualties.
Warning！
●All the operation and wiring work should be operated by professional electrical or
mechanical engineer.
●Please do not close switch on breakers before all the equipments are not fully
connected well.

3
Warning！
If inverter damage caused by the following circumstances will be beyond the warranty
scope of our company.
●Ensure that the max short-circuit of DC side is in the inverter allowable range when
configuring PV arrays, otherwise, inverter may be caused non-recoverable damage.
●Ensure that the open circuit voltage of JNPxL-G shall not exceed 450V when
configuring PV arrays, otherwise, inverter may be caused non-recoverable damage.
●It would influence the machine features and may cause machine damage if the
installation environment is selected improperly.
●Do not install the inverter in inflammable, explosive place or inflammable, explosive
materials storage .
●Don’t install the inverter in explosive dangerous place.
●Don’t install the inverter in place where vulnerable to lightning strike.
●Don’t install the inverter in place where have much salt fog.
●When running the inverter, please ensure good ventilation.
●Inverter should be installed erectly, and ensure the heat sink, fans etc. are without
shelter.

4
Notice！
●All the electrical installation must meet the electrical installation standard of local and
country.
●In order to ensure safe running, proper grounding, using appropriate conductor size
and providing short circuit protection are required.
●Connection cable must select suitable specification, firm connection and
good insulation.
Running
Danger！
●AC connection should not be turned off directly when AC side of inverter with loads,
DC connect need to be turned off firstly, and ensure that it has really no voltage, then
DC connection should be turned off.
●Please don’t plug any connectors under inverter charged state!
●Please don’t open the cover plate under inverter charged state!
Notice！
Only LCD display screen and DC switches can be touched when the inverter is running,
the heating devices (such as radiator, etc.) should not be touched to avoid scald.

5
Maintenance
Danger！
●Maintenance should be done by professional maintenance technical person.
●Please ensure that AC side breakers should be turned off firstly, then DC side
breakers should be turned off before checking and maintaining, after waiting at least
5 minutes, should measure DC side and AC side voltage with a voltage meter, to
ensure that operation under the circumstance of no voltage between DC side and AC
side.

6
2 Production Introduction
2.1 Solar Pumping System Introduction
Solar pumping system is different from traditional water pumping system, which
takes use of solar cells to convert solar energy into electricity.
It consists of 4 parts: PV modules, PV Pump Inverter, 3 phases AC pump and
water storage device. Solar Pumping Inverter converts DC power produced by
PV module into AC power required by the pump motor. A microprocessor inside
continuously monitor available energy levels and adjust pump speed, matching
energy required to energy available. This enables the system to operate under
varying solar isolation levels, and provide water throughout the day and
through different seasons. The PV Pump Inverter utilizes a high efficiency
MPPT algorithm to maximize power harvested from PV module.
JNPxL-G series solar pump Inverter add AC IN terminal, which support utility
AC input work as energy complement when sun radiation is insufficient, and
pass-by even at night (solar energy is unavailable).
Warning！
1) Inverter can’t be connected with the PV array, which is positive or negative
grounded!
2) AC input source must be Grid and Diesel generator or other AC input that is same as
required electric index.

7
Figure2-1 Solar pumping application system
Table2-1 Solar pumping application system list
No.
Name
Description
A
PV array
Monocrystalline silicon, Polycrystalline silicon.
B
Solar pumping
inverter
JNP1K1L-G, JNP1K5L-G, JNP2K2L-G.
C
AC pump
Three-phase AC pump.
D
Water storage
device
Can be the reservoir, fields etc.

8
2.2 Product’s Introduction
2.2.1 Appearance
Figure2-2 Appearance of Solar pumping inverter
Table2-2 Inverter appearance information table
No.
Name
Introductions
1
LCD display
screen
Man-machine interface, you can check the inverter
operating information through LCD display screen,
also can set some function and parameters of inverter.
2
Connection
terminals
Including DC input terminal (PV1+/PV1-/PV2+/
PV2-); output terminal (MOTOR); sensor connection
terminal (SERSOR).
3
Nameplate
Inverter basic parameters listed on the nameplate for
basic information about inverter.
4
Machine serial
No.
Machine factory number, when need after-sales
service should provide the number.
5
Hanger
Help machine heat dissipation, the temperature is
higher when inverter is running, don’t touch!

9
6
Radiator
Used to hang the inverter on the bracket.
2.2.2 Production Dimensions
Figure2-3 Dimension drawing of Solar pumping inverter (unit: mm)
Table2-3 Inverter dimension table
Model
Width(mm)
Height(mm)
Depth(mm)
Net weight（kg）
JNP1K1L-G
350
278
197
9.5
JNP1K5L-G
350
278
197
9.5
JNP2K2L-G
350
278
197
9.5
2.2.3 Product Name
The way of product naming, take JNP2K2L-G for example:

10
3 Inverter Unpacking
3.1 Unpacking Check
The product has been tested and checked carefully before transportation, but
damage may be caused during transportation, therefore, the product should
also be checked carefully before installation.
●Please check whether inverter outer packing is in good condition;
●After unpacking, please check whether the equipment is in good condition;
●According to the packing list to check whether all the parts is correct and
in good condition.
If any damage is found, please contact Our company. or the transportation
company. Please keep well the photos taken at the damaged parts and we’ll
provide you the best and fastest services.
Our company supply the standard inverter and some commonly used
accessories as below:
Figure3-1 Inverter and standard fittings

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Table3-1 Inverter and fittings table
No.
Description
No.
Description
1
PV pump inverter
8
Packing list
2
Installation bracket
9
Water level sensor (Optional)
3
Blue Ring tool
10
Quick Installation Guideline
4
Expansion bolt
11
Water level sensor (Optional)
5
PV connector
12
Certificate of inspection
6
AC connector
13
AC IN connector
7
Sensor and communication
connector (Optional)
3.2 Identify Inverter
The nameplate in the side of inverter, and it shows the inverter model, some
important parameter and certificate mark.
Figure3-2 Inverter nameplate

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Table3-2 Nameplate information table
NO.
Description
1
Logo and name.
2
Inverter model and parameter information.
3
Certificate and safety signs, concrete meaning as “Preface”.
4
Company and address.
5
Inverter factory number.
Note！
Photos are for reference only, please adhere to the original products!