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Cat. No. S101-E1-02
GridConnect Photovoltaic Inverter
KP100L-OD-
USER’S MANUAL
Note: Dec,2010
KP100L does not have the compatibility with thin-film module at this moment.
The compatibility is under evaluation.
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Introduction
Thank you for choosing the KP100L Grid Connect Photovoltaic Inverter (hereinafter called "the KP100L"). This
User's Manual (hereinafter called "this manual") describes essential information regarding functions,
performance, and usage of the KP100L.
The KP100L is designed for use in Grid Connect Solar Systems. The installation must always be carried out by
qualified personnel with knowledge of electrical systems and according to national standards for electrical
installations.
The software and the protective functions are not accessible and/or changeable to the user.
• This manual is intended for: Users and Installers of the KP100L
• Read this manual carefully and make sure that you understand it well to ensure that you are using the KP100L
correctly.
• Keep this manual in a safe location so that it is available for reference when required.
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Read and Understand this Manual
Read and understand this manual before using the KP100L. Please consult your OMRON representative if you
have any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of
five years (or other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING
NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS.
ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS
OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH
CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability
is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING
THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY
HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE,
MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.
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Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the
combination of products in the customer's application or use of the products.
At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and
limitations of use that apply to the products. This information by itself is not sufficient for a complete determination of
the suitability of the products in combination with the end product, machine, system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not intended to
be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses listed may be
suitable for the products:
• Uses involving potential chemical contamination or electrical interference, or conditions or uses not described in
this manual.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment,
amusement machines, vehicles, safety equipment, and installations subject to separate industry or government
regulations.
• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY
WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE
WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
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Disclaimers
PERFORMANCE DATA
Performance data given in this manual is provided as a guide for the user in determining suitability and does not
constitute a warranty. It may represent the result of OMRON's test conditions, and the users must correlate it to actual
application requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other reasons.
Consult with your OMRON representative at any time to confirm actual specifications of purchased product.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are
shown.
ERRORS AND OMISSIONS
The information in this manual has been carefully checked and is believed to be accurate; however, no responsibility
is assumed for clerical, typographical, or proofreading errors, or omissions.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
COPYRIGHT AND COPY PERMISSION
This document shall not be copied for sales or promotions without permission.
This document is protected by copyright and is intended solely for use in conjunction with the product. Please notify
us before copying or reproducing this document in any manner, for any other purpose. If copying or transmitting this
document to another, please copy or transmit it in its entirety.
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WARNING
CAUTION
Indicates a potentially hazardous situation which, if not
avoided, will result in minor or moderate injury, or may
result in serious injury or death. Additionally there may be
significant property damage.
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury, or in
property damage.
Safety Precautions
Indications and Meanings of Safety Information
In this user's manual, the following precautions and signal words are used to provide information to ensure the
safe use of the KP100L.
The information provided here is vital to safety. Strictly observe the precautions provided.
Meanings of Signal Words
Meanings of Alert Symbols
General
Used for general CAUTION, WARNING, or DANGER precautions for which
there is no specified symbol.
High temperature precaution
Used to warn of the risk of minor injury caused by high temperatures.
General
Used for general prohibitions for which there is no specific symbol.
General
Used for general mandatory action precautions for which there is no
specified symbol.
Electric shock precaution
Used to warn of the risk of electric shock under specific conditions.
Example of symbols
Always ground
Used to instruct the user to always connect the ground wire when using a
device equipped with a safety ground terminal.
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WARNING
CAUTION
Alert Symbols in This Document
Important user information:
Observe the following warnings and cautions when using the KP100L.
Significant property damage may possibly occur. Do not use the product in other
country than the designated country.
Functional lesion by injury and fire damage may possibly occur. Do not remove the
MC cap on the back of the product when you exchange the FAN Assembly.
Ask to the store where you purchased the product or to an authorized service person
when disposing of the product.
Injury by electric shock may possibly occur. Read this manual before installation,
operating and maintenance of the product, and follow the instructions carefully.
Injury by electric shock may possibly occur. Do not open the cover foreside R during
energizing.
Significant injury by electric shock may possibly occur. Do not touch the terminal of
the MC connector. Do not remove the MC connector excluding the instruction of this
manual.
Burn injury may occasionally occur. Do not touch the upper part of the product while
operating or immediately after having turned off power.
Fire damage or functional lesion of internal part may occasionally occur. Do not
obstruct the heat sink or place any objects within 200mm of the heat sink.
Fire damage and malfunction may occasionally occur. Do not use the product that
dropped or applied a strong impact.
Functional lesion by fire damage may occasionally occur. Do not unfasten of the MC
connector and the cable clamp during operating.
The limitation of the output electric power by the ventilation trouble may
occasionally occur. Clean the top and bottom of the heat sink regularly.
Injury or fire by electric shock may possibly occur. Do not open, disassemble,
modify, or repair the cover front and the cover foreside L during operating.
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Important installer information:
WARNING
Observe the following warnings and cautions when installing the KP100L..
Significant property damage may possibly occur. Do not use the product in other
country than the designated country.
Significant property damage may possibly occur. Do not use the product with a
mistake of the country setting.
Functional lesion by injury and fire damage may possibly occur. Do not remove the
MC cap on the back of the product when you exchange the FAN Assembly.
Significant property damage may possibly occur. Execute the installation by a
person who has the qualification that authorized by the electric power company in
the region.
Electric shock and significant property damage may possibly occur. Do a correct
connection after confirming the polarity of the cable from the solar modules and
from the grid.
Fire by loose connection of AC terminal block may possibly occur. Confirm there is
no looseness in the screw of the AC terminal block during the maintenance.
When using the product by the state that tightening the screw of AC terminal block is
insufficient, fire by loose connection may possibly occur.
Insert the electric cable in the inner of AC terminal block by using special Rod
terminal and crimping pliers, and tighten the screw by tightening torque of
1.2-1.5N•m.
Fire by loose connection of the MC connector may possibly occur. Use the
specialized tool for the crimping process of the MC connector. Insert the MC
connector surely until locking.
Injury by electric shock may possibly occur. Read this manual before installation,
operating and maintenance of the product, and follow the instructions carefully.
Injury or functional lesion by electric shock or burn injury may possibly occur. Do
not install the product in places that child's hand reaches.
Injury by electric shock may possibly occur. Do not open the cover foreside R during
energizing.
Significant injury by electric shock may possibly occur. Do not touch the terminal of
the MC connector. Do not remove the MC connector excluding the instruction of this
manual.
Significant injury by electric shock may possibly occur. Do not open the cover
foreside R and not touch the MC connector for three minutes after turning OFF the
breaker of the grid side and the solar module side.
Injury by electric shock may possibly occur. Connect the PE cable to the earth.
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CAUTION
Burn injury may occasionally occur. Do not touch the upper part of the product while
operating or immediately after having turned off power.
Fire damage or functional lesion of internal part may occasionally occur. Do not
obstruct the heat sink or place any objects within 200mm of the heat sink.
Fire damage and malfunction may occasionally occur. Do not use the product that
dropped or applied a strong impact.
Breakdown of DC input plug may occasionally occur. Do not put the product on
ground with it had the DC input plug side below.
Injury may occasionally occur. Transport and place the product carefully by two
persons or more.
Functional lesion by the fall of the product may occasionally occur. Use the
installation parts and materials that are included in the product.
Functional lesion by fire damage of terminal may occasionally occur. Detach the MC
connector by the state that turns off the breaker of the solar modules side. In the
state that the current flows, inserting and removing of the MC connector is not
allowed.
Break down or deterioration of the solar modules may occasionally occur. Install the
breaker between the transformer and the KP100L when you connect the transformer.
Connect the Neutral of the transformer to the earth.
Breakdown of internal part by static electricity may occasionally occur. Execute
wiring after discharging static electricity.
Functional lesion by fire damage may occasionally occur. Confirm there is no
looseness of the AC cable clamp, the communication cable clamp and the AUX cable
clamp. Confirm the MC connector is locked.
Injury or fire by electric shock may possibly occur. Do not open, disassemble,
modify, or repair the cover front and the cover foreside L during operating
Human hazard by electric shock or property damage by fire damage may
occasionally occur. Mount the enclosed MC caps onto MC connector that is not
used.
Electric shock or fire by the foreign body going into the product may occasionally
occur. Prevent the foreign body from invading from the cover foreside R when
wiring.
Functional lesion by injury and fire damage by the fall of the product may
occasionally occur. Install the product in the location where the weight (41.5kg) of
the product can be endured (the power of 176N•m torque per one screw can be
endured).
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Precautions for Safe Use
To use the product safely, what is executed or should evaded is shown.
Installation
Put the space of 200mm or more between the following.
• Between the product and the ceiling or eave
• Between the product and the floor
• Between the product and right and left wall
When you install the multiple KP100L, put the space of 200mm or more on the side of each KP100L.
Do not install the multiple KP100L vertically.
Do not install in the location where the product receives direct sunlight or rain when you install in outdoor.
Do not install the product in the home or near the place where the person work because the audible noise
generates when the product is oparating.
Transporting
Provide sufficient safety measures, such as scaffolding, to prevent danger during installation work.
Installation and Wiring
Make sure the following points when you install the product.
(1) Use the accessories included with KP100L.
(2) Make sure there is neither danger nor malfunction by the peripheral and the wire, etc.
other than the accessory.
• When wiring to the AC terminal block, do not insert two or more wires into one terminal.
• Use the wire of the diameter that corresponds to the capacity of the Solar modules.
Fire or smoke from fire may occur.
• IP65 performance can not be provided, if you don't follow these instructions:
(3) Use the cable of 18.5-20.5mm when you use the rubber bush of one hole for the AC cable clamp.
(4) Use the five cables of 3.5-4.0mm when you use the rubber bush of five holes
for the AC cable clamp.
(5) Use the cable of 4mm for the communications cable and the AUX cable.
(6) Tighten the cable clamp.
(7) Tighten the screws of the cover foreside R by tightening torque 1.5-1.7 Nm.
(8) Make sure the wire doesn't come off the terminal block after wiring the communication wire and the
AUX wire to the terminal block.
Exchanging Fans (FAN Assembly)
Make sure the following precautions when exchanging FAN Assembly.
(1) Exchange the FAN Assembly after turning off the breaker of the grid side and the Solar module side
and 3 minute or more pass. Electric shock and injury may occur.
(2) Use the specified FAN Assembly.
(3) Make sure the mounting direction of the FAN Assembly
(4) Tighten the screw correctly by tightening torque 1.5-1.7Nm after exchanging FAN Assembly.
(5) Connect each connector of the FAN Assembly to the product correctly.
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Solar Module
• Do not connect the solar module that has an open-circuit voltage in excess of 850 VDC.
• Do not connect the solar module that require earthing of negative or positive pole.
Breaker
• Use the breaker that corresponds to the capacity of the solar modules for the breaker of the Solar modules
side.
• Use the 20A trip breaker with B or C or D trip characteristics for the breaker of the grid side.
Maintenance - Inspection
• Be sure to inspect install condition, wiring connection, before doing a trial operation.
• To secure the IP65 performance, execute the additional tightening of the cable clamp regularly.
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Precautions for Correct Use
To prevent the adverse effect on the operation, what is executed or should be evaded is shown below.
Installation
• Install the product in a regulated direction.
• Do not install the product in the following places.
(1) Locations subject to intense temperature change.
(2) Locations subject to volatile, flammable, corrosive, or other toxic gas.
(3) Locations subject to vibration and large shocks.
(4) Locations subject to water vapor, oil vapor, or condensation.
(5) Locations where the product may be immersed in water.
(6) Locations subject to electric fields, direct sunlight, poor ventilation
(ex. Narrow places where the ventilation would be obstructed or the ambient temperature conditions
would be exceeded.).
(7) Locations subject to temperature and humidity conditions outside of the following ranges
• Temperature: 20 to 60C
• Humidity: 4 to 100%RH (Without condensation or freezing)
(8) Locations more than 2,000 m above sea level.
(9) Locations subject to saltwater spray, such as on oceangoing vessels or near a seacoast.
(10) Locations subject to falling snow, accumulated snow, or wind-blown snow.
Protect the product by building a protective roof when you install the product in the snowy region.
(11) Locations near highly combustible something or heat sources (stoves, heaters, boilers, etc.
(12) Locations subject to being damaged the wiring by animals or other factors.
Protect the wiring by, for example, placing wiring ducts.
(13) Locations subject to near the equipment (such as a radio or TV) that is likely to be affected by electric
waves, or to near an antenna.
Use the Product
• Do not stand on the product or place any objects on the product.
• Serious human hazard by fire may possibly occur.
• Do not use the product in a flammable gas atmosphere (including flammable sprays such as pesticides).
• Electric shock or fire may occur. Ask an authorized service person or a qualified person with knowledge of
electrical system when you install, add on, move or reinstall the product.
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Surge protection
• Install the surge measures circuit corresponding to the output voltage
• and input voltage to protect the inverter from the lightning surge.
• To do a steady operation, install and use the product in places where the following situations are avoided.
(1) Locations where surge voltage of the grid is generated by influence of neighborhood facilities and
equipment.
(2) Locations where the grid is unstable caused by influence of neighborhood facilities and equipment.
(3) In factory or the vicinity where the grid is unstable.
(4) Locations subject to noise that ungrounded consumer electronics generate.
Maintenance o Inspection
• Confirm that there is no abnormality such as rust on outside of the product during the maintenance.
Storage
• Store in locations where the temperature is within the range of 25 to 60C
• (with no condensation or icing), and the humidity is 95 % maximum.
• Store in locations that is no more than 2,000 m above sea level.
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Warning Labels
Warning Labels and Warning Description
The Warning labels are located on the KP100L as shown in the follow illustration.
Be sure to follow the instructions
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Checking After Unpacking
Checking the Product
On delivery, be sure to check that the delivered product is the KP100L that you ordered.
Should you find any problems with the product, immediately contact your nearest local sales representative or
OMRON Sales Office.
Checking the rating label
Model
Checking the Model
Type:KP100L-OD-
Specifications in DC
Specifications in AC
Correspondence country
14
Germany, Spain, Italy, France, Greece(Only mainland),
EU / EU-T
KR Korea
Czech Republic, Denmark, Portugal, Turkey,
Republic of South Africa
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KP100L
Mounting base plate QIG (Quick Install Guide)
Only KP100L-OD-EU/EU-T
User’ s Manual
Only KP100L-OD-KR
For KP100L-OD-EU/EU-T, PDF file is
provided.Consult your OMRON representative
to get PDF file
Checking the Accessories
The follow items are included in the KP100L package. Check that all of the items shown in the package before
you start the installation.
The complete set of Accessories
Items Number Note
For installation of Mounting base plate
Mounting Screw 8
Snap Bushing 8
M4 x 12mm Screw with
plain washer and spring
washer
M4 x 6mm Screw with plain
washer and spring washer
Rubber Bush
Tool of assistance when screw is stopped to hard wall
like concrete.
5
2
1
For fixation of product set up in Mounting base plate
(4 peaces are for mounting, a peace is for reserve)
Spare screw to fix the cover foreside R
For connection of AC cable
For connection of AC cable
1
Spare rubber bush
For connection of AUX and communication
2
Caps for MC connection ( + )
2
These are attached to KP100L.
MC Caps
2
Safekeeping of the Original Carton Box
Keep the original carton box and use it when you transport the KP100L for repair service etc.
Grid Connect Photovoltaic Inverte KP100L-OD-USER’S MANUAL
Caps for MC connection ( - )
These are attached to KP100L
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About This Manual
This Manual is compiled chapter by chapter for user's and installer's convenience as follows.
You understand the follow configuration ensures more good operation of the product
Content / Exposition For Users
Chapter 1 Overview Describes features and names of parts.
Provides external dimensions, installation
Chapter 2 Design
Chapter 3 Operation
Chapter 4 Maintenance Operations
Chapter 5
Chapter 6 After-Sales Service
Chapter 7 Specifications Describes specifications of the product.
Appendix
Inspection and
Maintenance
dimensions and other information necessary for
design.
Describes the name of parts of the operations
and the monitor. Describes the monitor function
of the product.
Describes the causes and their
countermeasures if the product fails, including
the solutions to possible troubles
(troubleshooting).
Describes inspection and maintenance of the
product.
Describes after-sales service and contact of the
product.
Describes contents of the displays other than
English.
For
Installers
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Contents
Introduction............................................................................................................................... 1
Read and Understand this Manual.......................................................................................... 2
Safety Precautions ................................................................................................................... 5
Precautions for Safe Use ......................................................................................................... 9
Precautions for Correct Use...................................................................................................11
Warning Labels....................................................................................................................... 13
Checking After Unpacking..................................................................................................... 14
About This Manual ................................................................................................................. 16
Chapter 1 Overview ............................................................................ 1-1
1-1 Model Name ........................................................................................................................... 1-2
1-2 Functions ............................................................................................................................... 1-3
1-3 Appearance and Names of Parts.......................................................................................... 1-9
Chapter 2 Design ................................................................................ 2-1
2-1 Typical System Configuration .............................................................................................. 2-2
2-2 Application information ........................................................................................................ 2-5
2-3 Installation............................................................................................................................. 2-7
2-4 Wiring ................................................................................................................................... 2-11
2-5 Check List ............................................................................................................................ 2-24
2-6 Connecting to the Grid........................................................................................................ 2-25
2-7 Maintenance Parts............................................................................................................... 2-27
2-8 Options ................................................................................................................................. 2-28
Chapter 3 Operation ........................................................................... 3-1
3-1 Part Names and Descriptions of Operation and Display Part ........................................... 3-4
3-2 Procedure at the First Time Operation ................................................................................ 3-5
3-3 Display transition .................................................................................................................. 3-8
3-4 State Display .......................................................................................................................... 3-9
3-5 Mode Selection Display ...................................................................................................... 3-11
3-6 Setting in Particular Countries ........................................................................................... 3-20
3-7 Confirm method of LCD display......................................................................................... 3-28
Chapter 4 Maintenance Operations .................................................. 4-1
4-1 Outline of error ...................................................................................................................... 4-2
4-2 Remedy for errors ................................................................................................................. 4-3
4-3 Buzzer................................................................................................................................... 4-10
4-4 Troubleshooting .................................................................................................................. 4-11
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Chapter 5 Inspection and Maintenance ............................................ 5-1
5-1 Inspection and Maintenance ................................................................................................ 5-2
5-2 Storage ................................................................................................................................... 5-6
Chapter 6 After-Sales Service............................................................ 6-1
6-1 After-Sales Service................................................................................................................ 6-2
6-2 Contact ................................................................................................................................... 6-3
Chapter 7 Specifications.................................................................... 7-1
7-1 Standard Specification List ..................................................................................................7-2
Chapter A Appendix............................................................................A-1
A-1 Error list..................................................................................................................................A-2
A-2 LCD messages (Local Language) ........................................................................................A-4
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Overview
1-1 Model Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-2 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-3 Appearance and Names of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1
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1 Overview
1-1 Model Name
Model Country
KP100L-OD-EU / EU-T
KP100L-OD-KR Korea
Germany, Spain, Italy, France, Greece(Only mainland),Czech Republic,
Denmark, Portugal, Turkey, Republic of South Africa
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1 Overview
EMI
Filter
Booster1
MPPT
Booster2
MPPT
Booster3
MPPT
EMI
Filter
DC/AC
L2
EMI
Filter
L1
L3
N
PE
EMI
AC breaker
Ground fault
breaker (RCD)
SPD
DC
switch
or
breaker
SPD
DC Bus
RLY1
RLY2
CPU1 CPU2
Communication
facility
RS-232C or RS-485
AUX facility
AUX_IN AUX_OUT
Solar module
Grid
1-2 Functions
System description
The KP100L converts DC power obtained from the solar modules into the AC power that is used in businesses,
and enables interconnection with the grid.
This makes it possible to purchase power from the grid during periods when the load is high, and to sell power to
the grid during periods when the load is low. (Please note that a contract must be concluded with the grid for this
purchasing and selling transaction.) The system configuration of the KP100L is shown in the figure bellow.
1-2 Functions
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1 Overview
Input specifications:
a) DC input voltage range: 200 to 850 VDC
b) MPPT voltage range: 225 to 800 VDC
Input limitations:
a) Maximum input open-circuit voltage: 850 VDC
b) Maximum input current per Tracking: 13 ADC
MPPT controls not to exceed 13 ADC.
c) Maximum input power per Tracking: 5500 W
MPPT controls not to exceed 5500 W.
Solar module 1
Solar module 2
Solar module 3
+
-
+
-
+
-
DCP
DCV
DCP
DCV
DCP
DCV
MPPT (Maximum Power Point Tracking)
3 pairs of positive and negative DC input channels are connected to three sets of MPP Tracking.
The output power of solar modules varies depending on the sunshine irradiation and the temperature of the
modules. In order to use the unstable output of the solar modules efficiently, the KP100L searches for the
operating voltage that will produce the maximum output power while it converts the DC input voltage. The
KP100L has 3 MPPT. The topology of the MPPT is mainly a booster. Each booster steps up the DC input voltage
to a higher DC BUS voltage. User can connect differently-aligned string as 3 MPPT operate independently as
illustrated in the figure bellow. This construction achieves high power generation and flexible sizing of PV string.
DC Bus
The three sets of MPPT store DC power via the DC/DC booster to the DC bus.
DC/AC Inverter
The DC bus is connected to the DC/AC inverter, which converts DC power to AC power.
Grid-Connection Relays
The two relays, RLY1 and RLY2, control the connection of the KP100L to grid via CPU1 and CPU2.
Output Lines
4 output lines (L1, L2, L3 and N) and PE represent the 3-phase 4-wire AC power transmission to grid.
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1 Overview
[example 1] up to 31 units
[example 2] up to 31 units
RS-232C/RS-485
Converter
RS-485
RS-232C
RS-485
modem modem
Communication Facility
RS-485 Communications
To communicate with multiple KP100L Units, you can connect them to a personal computer via RS-485 ports.
The maximum cable length is 500 m.
RS-485 allows communication with up to 31 Units.
RS-485 communications require a cable of the appropriate length and a personal computer installed with
monitoring software.
Baud rate is 4,800bps, 9,600bps or 19,200bps. Default value is 19,200bps.
Available communication protocol is Compoway/F or MODBUS.
1-2 Functions
1
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1 Overview
RS-485
RS-485
RS-485
RS-485
PLC
PLC
PLC
PLC
RS-232C
[example 3] PLC(Programmable Logic Controller):up to 4 units KP100L:up to 124 units
RS-232C Communications
The simplest and least expensive way to communicate between a single KP100L and a personal computer is to
connect directly via RS-232C ports. The maximum cable length between the personal computer and the KP100L
is 15 m.
1 - 6
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1 Overview
1 2 3 4 5 6 7 8 9
10
KP100L
AUX_OUT1 AUX_OUT2
AUX Terminal Block
AUX_IN
(*)The external DC voltage and resistance value are example.
Select appropriate value according to your application.
1 2 3 4 5 6 7 8 9
10
KP100L
AUX_OUT1 AUX_OUT2
1234 56 78 9
KP100L
AUX_OUT1 AUX_OUT2
AUX_IN
24VDC
24VDC
AUX Terminal Block
AUX Terminal Block
AUX_IN
510Ω
(*)
(*)
510
Ω
10
1 2 3 4 5 6 7 8 9
10
KP100L
AUX_OUT1
AUX_OUT2
1
2 3 4 5 6 7 8 9
KP100L
AUX_OUT1
AUX_OUT2
AUX_IN
AUX Terminal Block AUX Terminal Block
AUX_IN
10
AUX Facility
Relay Output
The KP100L has the 2 relays for 2 output signals of the table below. Refer to"3-5 Parameter List" for the setting of
the output signal. Refer to"2-4 Wiring " for connecting the AUX cable.
Name Type of contact Specifications
AUX_OUT1 SPST-NO
AUX_OUT2 SPST-NO
250 VAC / 1 A, 30 VDC / 1 A ( Resistive load)
Minimum permissive load 20mA
1-2 Functions
1
[Example when you use AUX_OUT1 or AUX_OUT2]
[Example when you use AUX_OUT1 of multiple products]
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1 Overview
1234 56 78910
AUX_OUT1 AUX_OUT2
AUX_IN
24VDC
AUX Terminal Block
10mA
KP100L
Photo-Coupler Input
The KP100L has the photo-coupler for input signals of the table below. Refer to"3-5 Parameter List" for the
setting of the input signal.
Name Type of contact Specifications
10mA Use 24 VDC to use AUX_IN.
Minimum ON time : 100ms
AUX_IN Photo-Coupler
[Example when you use AUX_IN]
Leakage current at OFF status 0.1mA
Residual voltage at ON status 2.0V
Capacity of external switch 20mA
1 - 8
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1-3 Appearance and Names of Parts
AC Cable Clamp
3-pairs of
DC Input plug
(MC4 connectors)
Communication
Cable Clamp
AUX Cable Clamp
Key
Display
Cover foreside R
(for Wiring)
Cover front
Cover foreside L
Fans
Heat sink
1 Overview
1-3 Appearance and Names of
Parts
1
(1) Fan
Grid Connect Photovoltaic Inverte KP100L-OD-USER’S MANUAL
Fans
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1 Overview
L1 L2 L3 PEN
AC Cable Clamp
AC Terminal Block
(2) 3-pairs of DC input plug (standard MC4 connectors):
Each input pair consists of positive and negative terminals, Refer to "2-4 Wiring".
(3) AC Output:
Delivering AC to the grid
DC1
DC2
DC3
DC Input plug ( + )
DC Input plug ( - )
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(4) AUX Interface
AUX Cable Clamp
Communication Cable Clamp
AUX Terminal Block
Communication Terminal Block
AUX Interface has the two relay output and the one photo coupler input.
(5) RS-232C or RS-485 Communication Interface:
The interface allows the communication with computer via RS-232C or RS-485.
1 Overview
1-3 Appearance and Names of
Parts
1
(6) Display and Key
Display
Key
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1 Overview
1 - 12
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Design
2
2-1 Typical System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-2 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2-3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2-5 Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
2-6 Connecting to the Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
2-7 Maintenance Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
2-8 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
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2 Design
• Ground fault breaker / RCD
• AC breaker
• SPD
• DC fuse
• DC switch/breaker
• SPD
The equipments in AC and DC side are used
depends on the design of the customer.
Solar module 1
Solar module 2
Solar module 3
Connection with grid network type TN Connection with grid network type TT
Connection with grid network type IT
Impedance
N
L1
L2
L3
L1
L2
L3
PEN
N
PE
L1
L2
L3
N
L1
L2
L3
2-1 Typical System Configuration
The figure below shows the typical system configuration of the KP100L.
Applicable grid network
The KP100L is designed to operate with grid network system type TT, TN as shown in the figure below. If the
KP100L is connected to the different type of grid network such as IT, it may be fault occur.
2 - 2
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2 Design
The KP100L is designed with grid network system type TT, TN. Then If you use transformer, connect the Neutral
to the ground as shown in the figure below.
3P+N
3P
Grid
N
Neutral in KP100L side should be
connected to the ground.
3P+N
3P+N
Grid
N
2-1 Typical System Configuration
2
Neutral in KP100L side should be
connected to the ground.
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2 Design
U
SG
0
Voltage of solar module
The voltage of the negative
pole is controlled as same
voltage level of Neutral.
Solar module
+
-
Solar module
+
-
Applicable solar module
The KP100L is designed to control the voltage of negative pole on solar module as same voltage level as Neutral
of grid as shown in figure below. This can be achieved by new inverter circuit (ZCC).
As a result, the voltage of negative pole on solar module is approx. zero. According to this function, you can use
the solar module which does not allow negative voltage on solar module.
Do not use the solar module that require earthing of negative or positive pole. Otherwise, the failure might occur.
Applicable type of solar module is shown in the table below.
Solar module manufacture
requirement
(1) No requirement
(2) No negative voltages on solar
module
(3) Earthing of negative pole on
solar module
(4) No positive voltages on solar
module
(5) Earthing of positive pole on
solar module
Type of solar module Applicable or not
Conventional silicon-based solar
modules
Some thin-film or silicon modules Basically, KP100L can be used.
Some thin-film or silicon modules KP100L can not be used.
Specific solar module KP100L can not be used.
Specific solar module KP100L can not be used.
KP100L can be used.
Note: Dec,2010
KP100L does not have the compatibility with thin-film module at this moment.
The compatibility is under evaluation.
2 - 4
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2 Design
Example of SPD
• Class II
• PV voltage 1000 VDC
• Nominal discharge current (8/20us) I
n
:20 kA
• Maximum discharge current (8/20us)I
max
:40 kA
• Protection revel: 4 kV
This is just example. Contact company of
protection device for selection.
SPD on each input
Grid
N
3P
3P+N
Breaker Breaker
2-2 Application information
DC side
DC switch / breaker
DC switch / circuit breaker is an obligatory prerequisite stipulated by DIN VDE 0100-712, the installation standard
for PV systems in Germany. For safety point of view during working on an electrical device, it is necessary to
disconnect from the energy supply. DC circuit breaker between the PV modules and the inverter is used. Select
DC circuit breaker with rate current is larger than designed PV short circuit current on each DC input.
SPD (Surge Protective Device) in DC side
SPD (Surge protective device) is used to protect the inverter against lightening surge voltage.
2-2 Application information
2
AC Grid side
AC breaker
For protection of AC over current, use a 20 A trip breaker with B or C or D trip characteristics.
If you use the transformer, install the breaker between the transformer and the KP100L as shown in the figure
below.
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2 Design
712.413.1.1.1.2 Where an electrical installation includes a PV power supply system without
at least simple separation between the AC side and the DC side, an RCD installed to provide
fault protection by automatic disconnection of supply shall be type B according to IEC 60755,
amendment 2.
Where the PV inverter by construction is not able to feed DC fault currents into the electrical
installation, an RCD of type B according to IEC 60755 amendment 2 is not required.
Example of SPD
• Class II
• Nominal voltage 230/400 VAC
• Nominal discharge current (8/20us) I
n
:20 kA
• Maximum discharge current (8/20us)I
max
:40 kA
• Protection revel: 1.5 kV
This is just example. Contact company of
protection device for selection.
L1
L2
L3
N
PE
Ground fault breaker / RCD (Residual Current Device)
For KP100L, the use of RCDs type B is not indispensable and RCDs type A can be used.
IEC712.413.1.1.2 describes about Residual Current Devices (RCDs) as follows:
KP100L has built-in fault current protection function required in Germany standard of
VDE V 0126-1-1:2006-02, so DC residual current can be detected and cannot flow to the grid.
Notice of selecting RCD
• The use of RCDs for each unit is recommended.
• In(rated residual operating current of RCD) has to be selected according to the local regulations about the
system configuration, and residual current caused by capacitive characteristic of cable and PV modules.
• In the systems which DC current detection of In<30mA is required, type B has to be used.
• KP100L has built-in fault current protection function but residual current is not zero, so the more KP100L
installed units, the much residual current flows in the grid. When multiple KP100L are installed, downstream
RCD(for KP100L) and upstream RCD has to be determined by consideration of increasing residual current.
• Ultimately, the selection of RCD depends on System Integrators' judgment. OMRON provide this information
for selection of RCDs, but we are not responsible for the selection of RCD.
SPD in Grid side
SPD is used to protect the inverter against lightening surge voltage in AC line.
2 - 6
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2-3 Installation
455 270
700
253
40
53.2
444.8
404.8
200mm
200mm
200mm
200mm
2 Design
Dimensional Drawing
Mounting Dimensions
Installation Environment
• Do not install the product on ocean-going vessels or in places near the seacoast that are subject to saltwater
spray.
• When you install outdoors, be sure to provide an awning or eave of some kind to prevent direct sunlight or rain
from striking the Unit.
• Leave specific space as shown in the figure below between the KP100L and the ceiling or eave, the floor or
ground, and wall when you install the KP100L.
2-3 Installation
2
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2 Design
Mount Inverter Straight
Never mount tilted to front Never use in tower orientation
200mm
• When you install multiple Inverters, leave a space of 200mm the minimum to the side of the Inverter. Do not
install multiple Inverters vertically.
2 - 8
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2 Design
Snap bushing
Use Snap Bushings when the wall is
a hard wall like concrete
8mm diameter
55mm depth
Snap bushing
Wall
Mounting
base plate
Installation
(1) Set up "Mounting base plate" in the place where the weight (41.5kg) of KP100L can be endured. The
installation location should endure the torque of 176Nm with each installation screw.
Use the reinforced board when strength of the wall is insufficient.
Please prepare the board to reinforce it .
(2) Mark the positions of the 8 outer mounting holes onto the wall with the mounting base plate.
(3) Drill the 8 marked holes in the wall, and then drive the 8 Snap Bushings by the hammer into the wall,
when the wall is a hard wall like concrete.
2-3 Installation
2
(4) Fix the mounting base plate to the wall by using 8 mounting screws of the attachment.
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2 Design
(5) Set it in product so that 4 places in the part where both sides of the mounting base plate are curved
may come outside of the heat sink.
(6) Set it up so that the 2 screws in the both sides of the heat sink may fall into the ditch of the mounting
base plate.
(7) Fix the heat sink and the mounting base plate by using bundled M4X12 with plane washer and spring
washer in 4 points. (Tightening torque: 1.5 to1.7 Nm)
2 - 10
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2-4 Wiring
Cap
Rubber Bush (none hole)
Remove the cover foreside R.
Remove the 4 screws, and the cover foreside R.
2 Design
2-4 Wiring
2
Connecting the AC Cable
Connect the AC cable to the KP100L as follow steps
(1) Remove the cap of the AC cable clamp, and take the rubber bush (None hole) out.
(2) Pass the AC cable through the cap and the rubber bush of the cable clamp.
Rubber bush (one hole type and five hole type) is bundled.
(2)-1In the case of you use the rubber bush of the one hole type
The rubber bush of one hole is used for connection with multiple-cable.
Rubber Bush (one hole)
Grid Connect Photovoltaic Inverte KP100L-OD-USER’S MANUAL
Cap
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2 Design
Rubber Bush (five holes)
Cap
(2)-2 In the case of you use the rubber bush of the five holes type
The rubber bush of five holes is used for connection with five individual cables.
(2)-3 Use the cable and the wire in the table below
Diameter of cable Cross-sectional area of wire
The rubber bush for one hole 18.5 to 20.5mm
The rubber bush for five holes 3.5 to 4.0mm
2
4mm
/ AWG12 or more
2
4mm
/ AWG12
Don't use cables that the loss is more than 1% of nominal power of the inverter.
Refer to the figure below to check possible cable lengths for the different cross-sectional area.
2.0%
4[mm2]
6[mm2]
1.5%
1.0%
Cable lossses
0.5%
0.0%
0
10[mm2]
20
40
Cable length [m]
60
80
100
(3) Use the special Rod terminal and crimping pliers for AC wiring like the picture below when connected
with KP100L.
Cross-
sectional area of wire
2
4 mm
2
6mm
2
10 mm
12mm or more
AI 4-10 GY CRIMFFOX 6, CRIMPFOX 10s
AI 6-12 YE CRIMFFOX 6, CRIMPFOX 10s
AI 10-12 RD CRIMPFOX 10s
Rod terminal
(Phoenix Contact)
Rod terminal
Cut in 10mm
crimping pliers
(Phoenix Contact)
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(4) Insert wire in the interior of AC terminal block, and tighten by a flathead screwdriver.
(Tightening torque :1.2 to1.8 Nm)
L1 L2 L3 N PE
(5) Tighten the cap of the cable clamp surely.
When tightening the cable clamp is insufficient, the effect of the waterproof is not achieved.
2 Design
2-4 Wiring
2
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2 Design
Cap
Rubber Bush
Cap
Rubber Bush
Connecting the Communication Cable
Wiring for the communications cable to the KP100L as follow steps
(1) Remove the cap of communications cable clamp, and take the rubber bush out.
(2) Puncture only the necessary parts of the rubber bush taken out with a tool like gimlet, and pass wiring.
Use the cable and the wire in the table below.
Diameter of cable 4.0mm
Diameter of wire solid wire / 0.4-1.2 (AWG26-16)
Length in which the insulating coating of the
cable is peeled off and taken
7mm
Two spare rubber bush are bundled. Use bundled rubber bush when you make a mistake in the
punctured processing.
(3) Pass the communication cable through the hole of the product. Set the rubber bush in the main body of
the cable clamp, and tighten the cap lightly.
Tighten the cap lightly
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2 Design
TB402
TB401
12345678910
Communication terminal block
(4) KP100L has 2 kinds of communications (RS-232C, RS-485), and the following tables show each wiring
step. The PIN arrangement of "Communication terminal block" is shown below.
No Name Note
1 RS-232C_TXD 2 RS-232C_RXD 3GO 4 RS-485_DB(+) 5 RS-485_DA(-) 6 GO GO is internally connected with Terminal No.3.
7 RS-485_DB(+) RS-485_DB (+) is internally connected with Terminal No.4.
8 RS-485_DA(-) RS-485_DA (-) is internally connected with Terminal No.5.
9 RS-485_END1
10 RS-485_END2
When using RS-485 and termination is required, Terminal
No.9, and 10 are connected.
When using RS-485 and termination is required, Terminal
No.9, and 10 are connected.
2-4 Wiring
2
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2 Design
TB402
TB401
Black button
12345678910
GO
RS-232C(TXD)
RS-232C(TXD)
TB402
TB401
Black button
12345678910
GO RS-485_DB(+) RS-485_DA(-)
(5)-1 RS-232C
Connect the wire to 1: RS-232C(TXD), 2 : RS-232C(RXD), and 3 : GO of communication terminal block
(TB401). When you connect the wire, insert the wire while pushing the black button of TB401 and
release the button.
*Note: Note the wrong wiring of the signal wire, and the catch of the insulating coating.
(5)-2 RS-485
(5)-2-1 Wiring for RS-485
Connect the wire to 3: GO, 4: RS-485_DB(+), 5: RS-485_DA(-) of communication terminal
block(TB401). When you connect the wire, insert the wire while you push the black button of TB401
and release the button.
*Note: Note the wrong wiring of the signal wire, and the catch of the insulating coating.
2 - 16
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2 Design
12345678910
1 2 3 4 5 6 7 8 9 10
KP100L
L1
L2
L3
N
PE
GO GO
SG
RS-485 interface equipment
< 50V
(5)-2-2 Wiring when connecting 2 or more products
Connect the wire to 3: GO, 4: RS-485_DB(+) and 5: RS-485_DA(-) of the communication terminal
block(TB401). Connect the other wire to 6: GO, 7: RS-485_DB(+) and 8: RS-485_DA(-).
(5)-2-3 Terminal processing of wiring when connecting 2 or more products
Connect the other wire to 9: RS-485_END1 and 10: RS-485_END2. Be short-circuited.
2-4 Wiring
2
12345
67
89
10
Keep the voltage between GOof Communication terminal block and PE.is less than 50V.
RS-485_END2RS-485_END1
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2 Design
Cap
Rubber Bush
Connecting the AUX Cable
Wiring for the AUX cable to the KP100L as follow steps
(1) Remove the cap of the AUX cable clamp, and take the rubber bush out.
Cap
Rubber Bush
(2) Puncture only the necessary parts of the rubber bush taken out with a tool like gimlet, and pass wiring.
Use the cable and the wire in the table below.
Diameter of cable 4.0mm
Diameter of wire solid wire / 0.4-1.2 (AWG26-16)
Length in which the insulating coating of the cable is
peeled off and taken
7mm
Two spare rubber bush are bundled. Use bundled rubber bush when you make a mistake in the
punctured processing.
(3) Pass the AUX cable through the hole of the product. Set the Rubber Bush in the main body of the cable
clamp, and tighten the cap lightly.
Tighten the cap lightly
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2 Design
TB402
TB401
12345678910
AUX terminal block
(4) KP100L has one input signal and two output signal, and shows each wiring steps in the follow.
The PIN arrangement of "AUX terminal block" is shown below.
No Name Note
1 AUX_IN+ Photo-coupler input +. Refer to"1-2 Function"
2 AUX_IN- Photo-coupler input -. Refer to"1-2 Function"
3NC 4 AUX_OUT1+ Relay out put. Refer to"1-2 Function"
5
6 AUX_OUT1- Relay out put. Refer to"1-2 Function"
7 AUX_OUT1- AUX_OUT1- is connected Terminal No.6 and internally.
8NC 9 AUX_OUT2+ Relay out put. Refer to"1-2 Function"
10 AUX_OUT2- Relay out put. Refer to"1-2 Function"
AUX_OUT1+
AUX_OUT1+ is connected Terminal No.4 and
internally.
2-4 Wiring
2
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2 Design
TB402
TB401
Black button
12345678910
TB402
TB401
12345678910
(5)-1-1 AUX_OUT1
Connect the wire to 4 : AUX_OUT1+ÅA6 : AUX_OUT1- of AUX terminal block(TB402). When you
connect the wire, insert the wire while you push the black button of TB402 and release the button.
*Note: Note the wrong wiring of the signal wire, and the catch of the insulating coating.
(5)-1-2 Wiring when connecting 2 or more products (AUX_OUT1)
Connect the wire to 4 : AUX_OUT1+ and 6 : AUX_OUT1- of AUX terminal block(TB402).
Connect the other wire to 5 : AUX_OUT1+ and 7 : AUX_OUT1-.
12345678910
TB402
TB401
TB401
(5)-2 AUX_OUT2
Connect the wire to 9 : AUX_OUT2+ and 10 : AUX_OUT2- of AUX terminal block(TB402). When you
connect the wire, insert the wire while you push the black button of TB402 and release the button.
*Note: Note the wrong wiring of the signal wire, and the catch of the insulating coating.
2 - 20
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2 Design
TB402
TB401
12345678910
(5)-3 AUX_IN
Connect the wire to 1 : AUX_IN+, 2 : AUX_IN- of AUX terminal block(TB402). When you connect the
wire, insert the wire while you push the black button of TB402 and release the button.
Note: Note the wrong wiring of the signal wire, and the catch of the insulating coating.
2-4 Wiring
2
(6) Tighten the cap of the cable clamp surely.
If the tightening is insufficient, the effect of the waterproof is not achieved.
Attachment of cover foreside R
Mount the cover foreside R by the 4 screws surely (tightening torque : 1.5 to1.7Nm)
When tightening the screws is insufficient, the effect of the waterproof is not achieved.
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2 Design
Wiring the KP100L to the Solar Modules
• First make sure the maximum open circuit voltage Voc of each PV string is below 850 VDC under any
condition.
• Always connect solar module positive (+) terminal to KP100L DC positive (+) terminal, and the solar module
negative (-) terminal to KP100L DC negative (-) terminal.
• KP100L has 3 MPPT. Usually solar modules are connected to 3 DC terminals as illustrated in figure below.
Mount the enclosed MC caps onto MC connector that is not used. Each set of DC terminals takes a maximum
DC input of 13A. 3 pairs of DC terminals can take a combined input of up to 33A. Maximum PV input power for
each tracking is 5,500W.
• One PV-panel can be connected to 3 DC input as illustrated in figure below. To fully optimize the PV output
set-up, use the following configuration guidelines:
(a) For PV output 13A, use a single pair of DC terminals.
(b) For 13A PV output 26A, use 2 sets of DC terminals.
(c) For 26A PV output 33A, use 3 sets of DC terminals.
Attach the enclosed MC caps that is not used
Each input ≤ 13A, 5500W
Attach the enclosed MC caps that is not used
DC input ≤ 33A
13A ≤ DC input ≤ 26A
Be especially careful about electric shocks during the daytime, because that is when the solar modules are in the
power generating mode. Confirm the polarity of the cable from the solar modules to ensure correct connection
and make sure that there is no slackness of MC connectors.
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2 Design
PV-ADBP4
PV-ADSP4
PV-KST3
PV-KBT3
PV-ADBP4
PV-ADSP4
PV-A-KBT3 / KST4
PV-A-KBT4 / KST3
For the DC terminal of the KP100L, use the standard MC4 connectors.
Model type of connectors is shown below.
Solar module side (MC4 series) KP100L side (MC4 series)
Do not disconnect
under load
PV-KST4
PV-KBT4
Multi-Contact sells the conversion cable to MC3 and MC4(PV-A-KBT3/KST4,PV-A-KBT3/KST3). If you use MC3
series in the solar module, refer to these conversion cable below.
Solar module side (MC3 series) KP100L side (MC4 series)
2-4 Wiring
2
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2 Design
2-5 Check List
Each of the Inverter has been installed to be used in accordance with the instructions listed in the manual or the
product specification; eg. ambient temperature, annual operation time, installation place, no direct exposure to
sun light and direct rain fall, mounting distances and protection against toxic gas and other harmful gas
environment, dust and other contamination.
Ensure that you have checked and verified the following points:
The provided mounting base plate for the KP100L is attached and fixed securely and correctly.
The inverter is mounted securely in the mounting base plate.
There has been no use of parts or accessory other than Omron has provided and/ or specify.
There has been no drop-off of the inverter or damage given when the inverter are installed and set up.
There has been no mechanical stress, which applies continuously yet negligible, such as vibration or shock to
the inverter.
The heat sink of the inverters is purged to avoid any clog of air convection and do not place any objects close
to the air duct.
All the wires and cables are connected to correct polarity.
MC connectors have been fastened and not deteriorated.
"Screws of AC cable" has been fastened.
Cover foreside R has been fastened and the cable clamps have been tightened correctly.
Solar modules have been installed properly and they perform as designated.
Open circuit voltage MUST not exceed 850 VDC under operating temperature (-20 to 60C).
Short-circuit DC current MUST not exceed 13 A DC per one DC input.
Cables on AC side have low resistance enough to constrain an increase of the grid voltage at the terminal of
connection (or other side of grid transformer) and loss is less than 1% of rated power of the inverter.
There has been a protection against lightening surge put on DC side of the inverter, in particular, in a place
where it is often seen
There has been a protection against surge (spike) voltage and grid instability on AC grid lines to avoid any
adverse influence from a nearby construction work or similar unusual event
There has been a protection against a less quality grid connection, in particular, in an industrial estate or near
one
There has been no modifications performed by a party other than OMRON in a product specification.
There has been no other apparatus without grounding (eg. washing machine) on the same grid lines.
There has been no installation or set-up such as that cause the inverter to chatter repeatedly intervention and
re-generation of power at startup and stop.
2 - 24
Grid Connect Photovoltaic Inverte KP100L-OD-USER’S MANUAL
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2 Design
AC cable
(4mm2 or AWG12)
AC connection
(Consisting of
Ground fault breaker,
AC breaker, SPD, terminals etc.)
Grid
2-6 Connecting to the Grid
Wiring the KP100L to the Grid
The AC connection unit is an interface between the KP100L and the grid. It may consist of an electrical breaker,
fuse and terminals for connection to both the KP100L and the grid. This AC connection unit must be designed by
qualified technician to comply with local safety standards.
Use a 20 A trip AC breaker.
2-6 Connecting to the Grid
2
Preliminary Confirmations
Check the following items before wiring.
No. Inspection Item Procedure, Measurement or Confirmation Checkmark
1
2
3
4
Solar module installation
condition
KP100L installation condition Visual confirmation:
Wiring, connection, and
conductivity
KP100L ground resistance Measurement confirmation:
Visual confirmation:
Refer to the technical manual for the solar modules.
Make sure none of the mounting screws are loose.
Make sure that the KP100L and the mounting base plate are
securely fixed with the mounting screws.
Visual confirmation:
Inspect for looseness in clamps and screws, proper wire
connection, and conductivity.
Standard: 100max.
KP100L actual measurement:
Grid Connect Photovoltaic Inverte KP100L-OD-USER’S MANUAL
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2 Design
No. Inspection Item Procedure, Measurement or Confirmation Checkmark
Connect the Solar modules High voltages exist when the Solar modules are exposed to
the sun. Exposed terminals of the Solar modules are live, and
can cause electric shock. Avoid making physical contact with
live parts of the device.
After the Solar modules are connected to KP100L, the input
voltage is greater than 200 VDC, the LCD displays the country
setting at first time operation.
Set a specified country. Refer to "3-2 Procedure at the First
5
Grid voltage confirmation Measure to confirm that the grid voltage is about 230 V.
6
Time Operation" for detail.
After the country setting, the input voltage is greater than 200
VDC and the AC grid is not connected to the KP100L, the LCD
displays.
Fault E1-0
No Utility
Voltage measurement for each solar module string
Measurement confirmation: DC1 V
Actual measurement: AC
(L1) V AC(L2) V AC(L3) V
DC2 V DC3 V
Power-ON delay time for
grid-connected operation
7
Step 1:
Check the connection between KP100L and AC Connection
System. And then check the connection between the Grid and
AC Connection unit.
Close the AC breaker or fuse in the unit.
Step 2
Measure the time until operation resumes.
Step 3
Confirm that the displays the status "Normal" and that the
KP100L performs the grid connect operation.
Pac 1.5kW
0.50/0.50/0.50kW
The KP100L is feeding power to the grid, and the green LED
displays.
Confirm the wattmeter The Wattmeter installed to count the injected electricity should
8
work while the inverter displays that electricity is being
injected.
2 - 26
Grid Connect Photovoltaic Inverte KP100L-OD-USER’S MANUAL
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2 Design
2 Cooling Fans
2-7 Maintenance Parts
FAN
The KP100L has the two fans of maintenance parts. Refer to "Chapter 4 Maintenance Operations" for the alarm
of the fans exchange. Refer to "Chapter 5 Inspection and Maintenance" for exchange procedure of the fans.
2-7 Maintenance Parts
2
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2 Design
2-8 Options
The screw of hexagon (For Italy)
The customer who uses KP100L in Italy must buy the following screw. And, fix Cover foreside R according to the
following procedure. This is a requirements of ENEL guideline.
Execute the procedure below to seal the cover foreside after AC connection.
(1) Remove the screw 2 points where cover foreside R is fixed, and fix with the bought screw.
(Tightening torque :1.5 to 1.7 Nm)
(2) Pass the steel wire through the part of the fixed hole of 2 screws. And, pass the steel wire through
attachment as shown the figure.
2 - 28
Grid Connect Photovoltaic Inverte KP100L-OD-USER’S MANUAL
Page 62
(3) Pull the wires as shown in figure. Once you pull the wire firmly, you can not loose it.
2 Design
2-8 Options
2
DC SWITCH
It is necessary to use DC switch or circuit breaker which complies to the installation standard for photovoltaic
systems (VDE0100-712).
When you install where you require the DC switch such as Germany, please consult your OMRON representative
Grid Connect Photovoltaic Inverte KP100L-OD-USER’S MANUAL
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2 Design
2 - 30
Grid Connect Photovoltaic Inverte KP100L-OD-USER’S MANUAL
Page 64
Operation
3-1 Part Names and Descriptions of Operation and Display Part . . . . . . . . . . 3-4
3-2 Procedure at the First Time Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3-3 Display transition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3-4 State Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3-5 Mode Selection Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3-6 Setting in Particular Countries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3-7 Confirm method of LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
3
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9
3 - 1
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3 Operation
WARNING
CAUTION
Important user information:
Observe the following warnings and cautions when using the KP100L.
Injury or fire may occur due to electric shock. Do not open, disassemble, modify, or repair
the front cover and the cover foreside L.
Death may possibly occur by injury because the solar modules operate at a high voltage. Do
not remove the MC connector.
Electric shock may occur. Do not open the cover foreside R during energizing.
Burn injury may occur. Do not touch the upper part of the product while operating or
immediately after having turned off power.
Fire may occur. Do not obstruct ventilation holes or place any objects within 200mm of the
ventilation holes.
Injury due to electric shock or property damage due to burning may occur. Do not unfasten
of MC connector and cable clamp.
3 - 2
Grid Connect Photovoltaic Inverter KP100L-OD- USER’S MANUAL
Page 66
Important installer information:
WARNING
CAUTION
Observe the following warnings and cautions when installing the KP100L.
Injury or fire may occur due to electric shock. Do not open, disassemble, modify, or repair
the front cover and the cover foreside L.
Electric shock may occur. Do not open the cover foreside R during energizing.
3 Operation
3
Burn injury may occur. Do not touch the upper part of the product while operating or
immediately after having turned off power.
Fire may occur. Do not obstruct ventilation holes or place any objects within 20 0mm of the
ventilation holes.
The product may break down. Install the breaker between the transformer and the KP100L
when you connect the transformer. Do not turn off the breaker on the grid side of the
transformer while driving the KP100L.
Electric shock or fire may occur due to the foreign body going into the main body. Install the
cover foreside L and the cover foreside R to the product when operating. Moreover, prevent
the foreign body from invading from the cover foreside when wiring.
Precautions for Correct Use
Use the Product
• Do not stand on the product or place any objects on the product.
• Serious injury may occur due to fire. Do not use the product in a flammable gas atmosphere (including
flammable sprays such as pesticides).
9
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3 Operation
RUN
MODE ENT
ERR
<< >>
Display[1] Display[2]
Display[3]
3-1 Part Names and Descriptions of
Operation and Display Part
Name Description
LED(Green) RUN Lit when the KP100L is running.
LED (Red) ERR Lit when the KP100L error occur.
LCD Display [1] Displays the data name of Display [3].
Display [2] Displays the status data.
Display [3] Displays measurement value, error content and set value that user
selected.
Key MODE Changes display modes.
<< Changes (Reverse-sending) the display mode and set value.
>> Changes (Order-sending) the display mode and set value.
ENT Enter the display mode and set value.
3 - 4
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3 Operation
WARNING
3-2
Procedure at the First Time Operation
Procedure at the First Time Operation
The procedure at the first time operation shows below.
(1) Connect the Solar modules to the KP100L.
(2) After the LCD becomes the display of the country setting, set a specified country.
(3) Make sure that the display of the country setting is correct.
(4) After turning OFF the AC breaker, wire the AC to the KP100L.
(5) Turn ON the AC breaker.
(6) Make sure that the KP100L starts running as indicated by the LCD.
Country Setting
Procedure of the Country Setting
The display moves to the display of the setting of the country when you start KP100L with Country Setting not
fixed. Refer to the figure below for setup. Table shows the relation between the menu and the country. You can't
set the country other than countries shown in the table. The KP100L complies with local and national standards
when correct country is selected.
Refer to P. 3 - 27 for the detect level in each country.
3-2 Procedure at the First Time Operation
3
Menu [GER] [FRA] [GRE] [CZE] [DEN] [TUR] [RSA] [ESP] [POR] [ITA]
Country Germany France Greece Czech
Republic
.
After once setting the country setting, you can't change the country setting. Be careful when
you set it.
Significant property damage may possibly occur. Do not use the product with a mistake of
the country setting. Contact store purchased when you fix the country setting by mistake.
Denmark Turkey Republic
of South
Africa
Spain Portugal Italy
9
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3 Operation
The country setting
(1)
Setup:Country
[GER]
MODE
ENT
>>
<<
Setup:Country
[FRA]
>>
<<
(2)
Setup:Country
[GER] OK?
Push the ENT Key for 5 second
(3)
(4)
Setup:Country
GER
After 5 second pass
Setup:Country
GER
After 5 second pass
Blinking the Display [3]
To the Normal Display
(1) In the country selection display, select the items that you want to set by the "<<" and ">>" key and you
decide the item by the ENT key.
(2) In the last confirmation display of country setting, fix the country setting when you push the ENT key for
5 second. You can return to the country selection display, when you push the MODE key.
(3) While the last confirmation display of country setting, the country name does the blinking display.
The key operation becomes invalid. After 5 second, display change to next display.
(4) In the last display of the setting country, the country name does the lighting display.
The key operation becomes invalid. After 5 second, display change to next display.
3 - 6
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3 Operation
ModeSelect
Setup [Check]
ErrL
Pac 30s
0.00/0.00/0.00kW
Check:Country
GER
Push the MODE key
for 5 second
(1)
(2)
(3)
Push the MODE key
or
No operation for 150seconds
Push the ENT key
Push the MODE key
ModeSelect
ErrLog [Setup] Che
Push >> key
Push << key
(4)
Push the MODE key
or
No operation for 150seconds
Procedure of the country setting confirmation
Make sure that the country setting is correct. Refer to the below Figure about the setting.
3-2 Procedure at the First Time Operation
3
(1) In the normal display, if you press the MODE key for 5 second, display change to the selection display.
(2) In the selection display, push >> and choose "Check".
(3) After you choose “Check“, push the ENT key.
(4) Display shows the country setting. Make sure the name of a country .
(5) Push the MODE key to return the selection display. After that push the MODE key to return normal
display.
9
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3 Operation
Normal Display
Pac 3.69kW
1.23/1.23/1.23kW
Error Displa
y
Error occurs
Mode selection display
ModeSelect
ErrLog [Setup] Che
ModeSelect
Setup [Check] ErrL
>>
ModeSelect
Check[ErrLog] Set
>> >>
mode of User’s setup
mode of Check Settings
mode of Error
State display
Setup:Language
ENG
ErrLog:1.E1-0
No Utility
Check:Country
GER
LCD Check Displa
y
MODE
or
No oparation for 150second
<<<<<<
ENT
MODE
Error doesn’t
occur
for 5 second
Push the ENT key
Push the MODE key
for 5 second
Push the MODE key or
No operation for 150seconds
Fault E1-2
Grid 0V
ENT
MODE
ENT
MODE
■■■
V1.23
■■■
■■■
KP100L
■■■
3-3 Display transition
The display according to the state of the KP100L and the key operation is done after the KP100L starts. The
following show the image of the display transition.
State display You can check operating state of KP100L.
Normal Display The display of state of KP100L. Refer to section " Normal Display" in "3-4" for detail.
Error Display The occurring error is displayed. Refer to section " Error Display" in "3-4" for detail.
Mode selection display You can select from this display to each mode of User's setup / Check Settings / Error
mode of User's setup You can set the setup value. Refer to section " User Setting" in "3-5" for detail.
mode of Check Settings You can check the setup value. Refer to section "Setting confirmation" in "3-5" for detail.
mode of Error Logging You can confirm the error that occurred in the past.
LCD Check Display You can check LCD. Refer to " 3-7" for detail.
Item Description
3 - 8
Logging.
Refer to section "Error Logging" in "3-5" for detail.
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3 Operation
Pac 3.69kW
Pdc1/2/3 3.69kW
1.28/1.28/1.28kW
<<
<<
>>
>>
Pac 30s
Pac Standby
Countdown
end
preparation
completion
Pdc1/2/3 30s
<<
<<
>>
>>
Pdc1/2/3 Standby
0.00/0.00/0.00kW
0.00/0.00/0.00kW
<<
<<
>>
>>
Start waiting Display
Countdown Display
Running Display
0.00/0.00/0.00kW
0.00/0.00/0.00kW
1.23/1.23/1.23kW
3-4 State Display
The display according to the state of the KP100L is done. State Display includes Normal Display and Error
Display.
Normal Display
When the error doesn't occur in the KP100L, the follow content corresponding to the state of the KP100L is
displayed.
The Display [2] shows data and the state corresponding to the state of KP100L at that time.
State Display (example) Content of Date
Countdown 30s Start-up delay time
Start waiting Standby Running 1.23kW AC Power
Stopping OFF -
3-4 State Display
3
The Display [3] shows the measurement value. Select the measurement value that you want to display by
pushing the "<<" or ">>" key. The displayed item is changed every 0.5 seconds when you keep pushing the "<<"
or ">>" key. The Display [1] shows the item name of the data displayed in the Display [3].
Refer to the follow table for the item that you can select.
Item name Measurement Value Data display form
Pac AC Power(L1 phase/L2 phase/L3 phase) 1.23/1.23/1.23kW
Pdc1/2/3 DC Power (DC1/DC2/DC3) 1.23/1.23/1.23kW
Vac Grid Voltage(L1 phase/L2 phase/L3 phase) 230/230/230V
Freq Grid Frequency 50.0Hz
Iac AC Current (L1 phase/L2 phase/L3 phase) 12.3/12.3/12.3A
Vdc1/2/3 DC Voltage (DC1/DC2/DC3) 400/400/400V
Idc1/2/3 DC Current (DC1/DC2/DC3) 12.3/12.3/12.3A
E-today Daily energy production 123.4kWh
H-total accumulated operation time 123456hr
E-total Total Periodic Energy (accumulated energy from time user reset) E-total can be reset
Grid Connect Photovoltaic Inverter KP100L-OD- USER’S MANUAL
by user. Refer to section "User Setting" in "3-5" [15] Clear of Total Periodic Energy
9
12345kWh
3 - 9
Page 73
3 Operation
r
Error Display
When an error occurred, the error code and the error content that shows the occurred error are displayed.
The Display [1] shows "Fault", "Failure" or "Warning" according to the type of occurring error. The Display [2]
shows the error code. The Display [3] shows the error content. (Refer to "Appendix-1 Error list" for the error type
of each error.) When an error occur, KP100L stop power generation except "A2-5: Abnormality of fan".
When two or more errors occur, the error with the highest priority is displayed. The Display [3] change from the
display of the error content into the display of the measurement value when "<<" or ">>" key is pushed whiles the
error occurring.
Refer to the follow definition of "Fault", "Failure", "Warning".
type of occurring error Definition
"Fault" Error of systems such as Solar module and Grid
"Failure" Kind of hardware breakdown of KP100L
"Warning" Warning
Fault: E1-2
Grid UV
<< or >>
Iac: E1-2
0.0/ 0.0/ 0.0A
<<
>>
The error with high priority occurs
from the displayed error.
Failure: E3-2
OverAcCur
Iac: E3-2
0.0/ 0.0/ 0.0A
<<
<< or >>
>>
3 - 10
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3-5 Mode Selection Display
[Transition of the each mode]
ModeSelect
Setup:Language
ENG
ModeSelect
>>
ModeSelect
>>
ErrLog:1.E1-0
No Utility
ENT
MODE
<< <<
<<
>>
MODE
ENT
Check:Country
GER
ENT
MODE
ErrLog [Setup] Che
Setup [Check]ErrL Check[ErrLog]Set
3 Operation
The display changes into the mode selection display if you push the MODE key for 5 second while the normal
display or the error display.
You can change the mode of user setting or setting confirmation or error logging from the mode selection display.
The display changes when the ENT key is pushed after you select the mode that you want to change by you
push the "<< "and ">>" key.
Menu Item Description
Setup User's setup You can set the setup value.
Check Check Settings You can check the setup value for confirmation.
ErrLog Error Logging You can confirm the error that occurred in the past.
3-5 Mode Selection Display
3
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3 Operation
ModeSelect
Setup:Language
ENG
Setup:COM_Prot
Auto
ENT
MODE
<<
MODE
ENT
>>
<<
>>
After five
ENT
MODE
Setup:COM_Prot
[Auto]
Setup:COM_Prot
[Compoway]
ENT
>>
<<
Setup:COM_Prot
Auto
When the setting has been setting,
Setup:Language
[ENG]
Setup:Language
>>
<<
>>
<<
>>
<<
[ITA]
seconds pass
Setup value does the blinking display.
ErrLog [Setup] Che
User's setup
In the mode of User's setup, you can set the language of display and the communication's parameter, etc.
In the selection display, the display changes into the mode of User's setup if you select "Setup" and push the ENT
key. When you set the item in the mode of User’s setup, relay turns off and power generation stops.
In the mode of User's setup, select the items that you want to set by the "<<" and ">>" key and decision the item
by the ENT key. Next, select the value that you want to set by the "<<" and ">>" key and decision the set value by
the ENT key.
It back to the display of the item selection without changing a set value when you push the MODE key while you
change a set value. It returns to the selection display when you push the MODE key while displaying the item
selection.
Refer to the following table for the item and the set value that you can set.
3 - 12
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3 Operation
Item display Set Value Mean
[1]
Setup of Language Language
[2]
Communication protocol
[Compoway/F, Modbus]
[3] Communication Unit
Number (*1)
[Compoway/F, Modbus]
[4]
Communication Baud
rate (RS-232C)
[Compoway/F]
[5]
Communication Baud
rate (RS-485)
[Compoway/F, Modbus]
[6]
Communication Parity
[Modbus]
[7]
Communication Stop bit
[Modbus]
[8] RS-485 Communication
Send wait time (*2)
[Compoway/F, Modbus]
[9] Change of parameter
level (GER or ITA)
[10] Setup level for control of
the grid voltage
increasing
[11]
Setup of Output Signal 1
(Relay outputs:
AUX_OUT1)
[12]
Setup of Output Signal 2
(Relay outputs:
AUX_OUT2)
[13]
Setup of Input Signal
(PHC INPUT: AUX_IN)
[14] Error Reset ErrReset - - [15] Clear of Total Periodic
Energy
[16] Auto Test (ITA only) AutoTest - - -
COM_Prot
COM_Unit
COM_232C
COM_485
COM_Pari
COM_Stop
COM_Wait
PARAM _LV
PF_LV
OutSig1
OutSig2
InputSig
TotalClr
ENG English ENG ITA Italian
ESP Spanish
GER German
FRA French
Auto Auto distinction Auto Compoway Compoway/F
Modbus Modbus
0 to 99 0 -
4800 9600 bps
9600
19200
4800 19200 bps
9600
19200
None No parity Even Even Even parity
Odd Odd parity
11bit
2
0 to 99 0 ms
0,1 0 -
0.0 to 30.0 OV setup level - this setup level 0.0 V
MODE1 Breakdown output mode MODE1 MODE2 Output mode of PV system's fault
MODE3 Output mode of grid system's fault
MODE4 Output mode of all errors
MODE5 Output mode of all errors (except grid
system's fault)
MODE1 synchronization mode with grid relay MODE1 MODE2 synchronization mode with
communication
MODE1 Operation stop mode MODE1 MODE2 Gate block mode
---
Initial
value
Unit
3-5 Mode Selection Display
3
9
*1 When communication protocol is set to Modbus , "Communication Unit Number 00" is communication unit number of
broadcast. Thus, set "Communication Unit Number" not include 00 when you do the communications other than the
Broadcast with Modbus.
*2 In the case of the Modbus setting, the silent interval is not included in the RS-485 Communication Send wait the time.
Grid Connect Photovoltaic Inverter KP100L-OD- USER’S MANUAL
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3 Operation
[1] Setup of Language
Set the language used for the display.
[2] Communication Protocol [Compoway/F, Modbus]
Set the protocol used for the communication.
If you set "Auto", the protocol of the received communication data is distinguished and it communicates by
Compoway/F or Modbus.
After set the protocol, disconnect the solar modules (turn-off the switch in DC side) and connect again to confirm
the value.
[3] Communication Unit Number [Compoway/F, Modbus]
Set the unit number used for the communication.
After set the unit number, disconnect the solar modules (turn-off the switch in DC side) and connect again to
confirm the value.
[4] Communication Baud rate(RS-232C) [Compoway/F]
Set the transfer rate of the communication of RS-232C.
After set the baud rate, disconnect the solar modules (turn-off the switch in DC side) and connect again to
confirm the value.
[5] Communication Baud rate(RS-485) [Compoway/F, Modbus]
Set the transfer rate of the communication of RS-485.
After set the baud rate, disconnect the solar modules (turn-off the switch in DC side) and connect again to
confirm the value.
[6] Communication Parity [Modbus only]
Set the parity for the communication.
After set the parity, disconnect the solar modules (turn-off the switch in DC side) and connect again to confirm the
value.
[7] Communication Stop bit [Modbus only]
Set the stop bit for the communication.
After set the stop bit, disconnect the solar modules (turn-off the switch in DC side) and connect again to confirm
the value.
[8] RS-485 Communication Send wait the time [Compoway/F, Modbus]
Set the wait time from receiving of the RS-485 command to sending the RS-485 command.
Adjust the RS-485 Communication Send wait time of the KP100L according to the switch time of the RS-485
transmission enable of the host side.
After set the wait time, disconnect the solar modules (turn-off the switch in DC side) and connect again to confirm
the value.
[9] Change of parameter level (GER or ITA)
Change the specific detect level. The detect level that you can change is different according to the country
setting.
Refer to " 3-6" for detail.
3 - 14
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3 Operation
The voltage of
the inverter terminal : Vo
The grid voltage : Vgrid
The grid impedance : Z
The output current : Io
Vo = Vgrid + Z x Io
Vo is higher than Vgrid
Time
The voltage of the inverter
OV level
Setup level for control
of grid voltage increasing
If the voltage of the inverter is higher than threshold, the
inverter control the voltage by reducing output current
[An example]
The voltage level for control of grid voltage increasing becomes
251V when the OV level is 253V, and Setup level for control of
grid voltage increasing is -2.0V.
[10] Setup level for control of the grid voltage increasing
This is a function to prevent increasing of the grid voltage by controlling the output current when the grid voltage
increases. This function can control the voltage of the inverter terminal before reaching OV level.
Setup level for control of the grid voltage increasing can decide the level of the grid voltage that controls the
output current. The level for control of the grid voltage increasing is a level which decreases Setup level from the
OV level.
3-5 Mode Selection Display
3
[11] Setup of Output Signal 1
The output mode of "External output signal 1 (AUX_OUT1)" is set.
Set the output mode of signal according to the occurring error.
Refer to " Appendix -1 Error list " for the error that occurs when each MODE is set.
[12] Setup of Output Signal 2
The output mode of "External output signal 2 (AUX_OUT2) is set. Refer to the following table.
MODE1
(synchronization mode with grid
relay)
MODE2
(synchronization mode with
communication)
Grid Connect Photovoltaic Inverter KP100L-OD- USER’S MANUAL
MODE Description State
The signal is output
synchronizing with the state of
Grid relay.
The signal is output
synchronizing with the state of
the communication.
Grid relay ON ON
Grid relay OFF OFF
Communication Possible ON
Communication Impossible OFF
9
Output of
Relay
3 - 15
Page 79
3 Operation
Setup:ErrReset
Are you ready?
Setup:ErrReset
ENT
Setup:ErrReset
After 5 second pass
Blinking the Display[3]
MODE
Setup:ErrReset
Complete
Executing
for 5 second
Push the ENT+MODE key
After 3 second pass
ENT
During error occur
[13] Setup of Input Signal
When the signal input to "External input signal (AUX_IN)" is turned on, KP100L operates the following table.
MODE Description
MODE1 (mode of stop) When the input is turned on, KP100L stops running.
"Stop" means that Relay turn off and stop power
generation.
MODE2 (mode of Gate block) When the input is turned on, KP100L does "Gate
block".
"Gate block" means only stop operation of inverter
circuit.
[14] Error Reset
You can reset occurring error. But error that you can reset is only the error that manual reset is possible.
[Operational Procedure]
At first, after display show the item name of "ErrReset" by you push the "<< "and ">>" key, push the ENT key.
When you push the ENT key and the MODE key at the same time for 5 second after the display became the
execution confirmation "Are you ready?", the Error reset is executed. The display becomes the execution
completion "Executing" after continuing the display executing Error reset for 5 second. After that, the display
returns to the item selection after 3 second pass.
When you push the MODE key while showing the execution confirmation, the display returns to the item selection
without you do Error reset.
3 - 16
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3 Operation
Setup:TotalCl
r
Are you ready?
Setup:TotalCl
r
ENT
Setup:TotalCl
r
Executing
MODE
Setup:TotalCl
r
Complete
for 5 second
Push the ENT+MODE key
After 5 second pass
Blinking the Display[3]
After 3 second pass
[15] Clear of Total Periodic Energy
Clear of Total Periodic Energy to 0.
[Operational Procedure]
At first, after showing the item name of "TotalClr" by you push the "<<" and ">>" key, push the ENT key. When
you push the ENT key and the MODE key at the same time for 5 second after the display became the execution
confirmation "Are you ready?", the integral power consumption clear is executed. The display becomes the
execution completion after continuing the display executing integral power consumption clear for 5 second. After
that, the display returns to the item selection after 3 second pass.
Moreover, when you push the MODE key while displaying the execution confirmation, the display returns to the
item selection without you do clear of Total Periodic Energy.
3-5 Mode Selection Display
3
[16] Auto Test (ITA only)
Confirm each function of the OV(Over Voltage), UV(Under Voltage), OF(Over Frequency) and UF(Under
Frequency).
Refer to" 3-6 Procedure of the Auto Test".
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3 Operation
Check:Country
ESP
<<
>>
Check:OV_Level
253.00V
ModeSelect
ENT
MODE
<<
>>
Check:SerialNo
123456
<<
>>
Setup [Check]ErrL
Check Settings
In the mode of Check Settings, you can check the country setting, each setting value that decision by the country
setting, the model name, the ROM version, the serial number. Refer to the follow list about the shown item. In the
selection display, the display changes into the mode of Check Settings if you select "Check" and push the ENT
key.
Change into the display of the item of next one by you push the ">>" key and change into the display of the item
of previous one by you push the "<<" key.
Return to the first item display when you push the ">>" key while showing the last item. Change into the last item
display when you push the "<<" key while showing the first item.
If you push the MODE key while which item is shown, the mode of Check Settings is ended and returns to the
selection display.
Name Item Display Unit
Country Setting Country OV Detect level OV_Level V
OV Detect Time OV_Time s
UV Detect level UV_Level V
UV Detect Time UV_Time s
OF Detect level OF_Level Hz
OF Detect Time OF_Time s
UF Detect level UF_Level Hz
UF Detect Time UF_Time s
Reconnection time RecTime s
Model Model ROM Version RomVer Serial number SerialNo -
3 - 18
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3 Operation
ModeSelect
ErrLog:1.E1-0
No Utility
ENT
MODE
ErrLog:2.E1-1
Grid OV
<<
>>
<<
>>
Check[ErrLog]Set
Error Logging (Menu:ErrLog)
In the display of Error Logging, the content of the error that occurred in the past are shown up to 50. The serial
number and the error code are shown in the Display [2] and the content of the error is shown in the Display [3].
An old Error Logging is displayed when you push the ">>" key and a new Error Logging is shown when you push
the "<<"key.
3-5 Mode Selection Display
3
The following is shown when there is no Error Logging.
ModeSelect
Check[ErrLog]Set
MODE
ENT
ErrLog:1.----
No Record
9
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3 Operation
Setup:AutoTest
ENT
MODE
Setup:AutoTest
Are you ready?
ENT
AutoTest:
Waiting
Blinking the Display [3] *Waiting
Please wait for about two minitues
AutoTest:OV [L1]
230.03V / 270.00V
3-6 Setting in Particular Countries
This section explains a setting different in each country.
Setting of Italy
This section explains the setting when the country setting is Italy.
Procedure of the Auto Test
Outline
This inverter has an automatic test function which is compliant with ENEL guideline. The function checks each
protective function of OV(Over Voltage), UV(Under Voltage), OF(Over Frequency) and UF(Under Frequency).
Detect level and detect the time are shown on LCD.
Execute the Auto Test in grid-connected condition. If you don’t connect grid and start Auto test, you can not finish
Auto Test.
Grid-connected operation is started automatically after the test. The starting procedures for the Auto Test and
sequences during the test are as follows.
The starting procedures for Auto Test
The Auto Test in the item of the user setting starts by you are selected and executed.
But, the Auto Test will not be started at the following conditions.
• When KP100L breaks down.
• When DC Power of Solar modules has not reached the amount that running is possible
3 - 20
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3 Operation
Broad outline of sequences during the Auto Test
Broad outline of sequences during the Auto Test are shown below. The Auto Test is executed OV, UV, OF, UF, in
that order.
(1) The inverter turns ON the inside Grid-connected relay.
(2) Increase or decrease the set value.
OV: Decrease at the point 0.5V/s
UV: Increase at the point of 0.5V/s
OF: Decrease at the point of 0.05Hz/s
UF: Increase at the point of 0.05Hz/s
(3) Grid-connected relays are disconnected, when OV detect level keeps below the grid voltage for more
than OV detect time
Grid-connected relays are disconnected, when UV detect level keeps above the grid voltage for more
than UV detect time
Grid-connected relays are disconnected, when OF detect level keeps below the grid frequency for more
than OF detect time
Grid-connected relays are disconnected, when UF detect level keeps above the grid frequency for
more than UF detect time
3-6 Setting in Particular Countries
3
(4) Detect level and detect the time are shown for ten seconds on LCD.
(5) After the test, grid-connected operation is started automatically and normal dispaly is shown.
9
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3 Operation
AutoTest:OV [L1]
230.05V / 110ms
Detect level of OV [L1]
[e.g.] in the case of 230.05V
Detect time of OV [L1]
[e.g.] in the case of 110ms
After displaying for ten seconds,
start the auto test of OV [L2]
Result of OV phase L1
Details of sequences during the Auto Test
Items Sequences during the auto test LCD
(1)
The Auto
Test of
OV [L1]
(1-1)The inverter turns on the inside Grid-connected
relay
(1-2)Detect level of OV [L1] is decreased at the point of
0.5V/s
(1-3)Grid-connected relays are disconnected, when OV
[L1] detect level keeps below the grid voltage for
more than OV [L1] detect time
(1-4)Detect level and detect time of OV [L1] detected in
(1-3) are shown. (Display for ten seconds.)
AutoTest:OV [L1]
230.03V / 270.00V
The grid voltage of L1
[e.g.] in the case of 230.03V
Setup level of OV [L1]
[e.g.] in the case of 270.00V
(2)
The Auto
Test of
OV [L2]
(2-1)The inverter turns on the inside Grid-connected
(2-2)Detect level of OV [L2] is decreased at the point of
(2-3)Grid-connected relays are disconnected, when OV
(2-4)Detect level and detect time of OV [L2] detected in
relay
0.5V/s
[L2] detect level keeps below the grid voltage for
more than OV [L2] detect time
(2-3) are shown. (Display for ten seconds.)
AutoTest:OV [L2]
230.03V / 270.00V
The grid voltage of L2
Setup level of OV [L2]
[e.g.] in the case of 230.03V
[e.g.] in the case of 270.00V
Result of OV phase L2
AutoTest:OV [L2]
230.05V / 110ms
Detect level of OV [L2]
Detect time of OV [L2]
After displaying for ten seconds,
start the auto test of OV [L3]
[e.g.] in the case of 230.05V
[e.g.] in the case of 110ms
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Items Sequences during the auto test LCD
The grid voltage of L3
[e.g.] in the case of 230.03V
Setup level of OV [L3]
[e.g.] in the case of 270.00V
AutoTest:OV [L3]
230.03V / 270.00V
AutoTest:OV [L3]
230.05V / 110ms
Detect level of OV [L3]
[e.g.] in the case of 230.05V
Detect time of OV [L3]
[e.g.] in the case of 110ms
After displaying for ten seconds,
start the auto test of UV [L1]
Result of OV phase L3
The grid voltage of L1
[e.g.] in the case of 230.02V
Setup level of UV [L1]
[e.g.] in the case of 184.00V
AutoTest:UV [L1]
230.02V / 184.00V
(3)
The Auto
Test of
OV [L3]
(3-1)The inverter turns on the inside Grid-connected
relay
(3-2)Detect level of OV [L3] is decreased at the point of
0.5V/s
(3-3)Grid-connected relays are disconnected, when OV
[L3] detect level keeps below the grid voltage for
more than OV [L3] detect time
(3-4)Detect level and detect time of OV [L3] detected in
(3-3) are shown. (Display for ten seconds.)
3 Operation
3-6 Setting in Particular Countries
3
(4)
The Auto
Test of
UV [L1]
Grid Connect Photovoltaic Inverter KP100L-OD- USER’S MANUAL
(4-1)The inverter turns on the inside Grid-connected
relay
(4-2)Detect level of UV [L1] is increased at the point of
0.5V/s
(4-3)Grid-connected relays are disconnected, when UV
[L1] detect level keeps above the grid voltage for
more than UV [L1] detect time
(4-4)Detect level and detect time of UV [L1] detected in
(4-3) are shown. (Display for ten seconds.)
Result of UV phase L1
AutoTest:UV [L1]
230.04V / 110ms
Detect level of UV [L1]
Detect time of UV [L1]
After displaying for ten seconds,
start the auto test of UV [L2]
[e.g.] in the case of 230.04V
[e.g.] in the case of 110ms
9
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3 Operation
AutoTest:UV [L2]
230.04V / 110ms
Detect level of UV [L2]
[e.g.] in the case of 230.04V
Detect time of UV [L2]
[e.g.] in the case of 110ms
After displaying for ten seconds,
start the auto test of UV [L3]
Result of UV phase L2
AutoTest:UV [L3]
230.04V / 110ms
Detect level of UV [L3]
[e.g.] in the case of 230.04V
Detect time of UV [L3]
[e.g.] in the case of 110ms
After displaying for ten seconds,
start the auto test of OF
Result of UV phase L3
Items Sequences during the auto test LCD
(5)
The Auto
Test of
UV [L2]
(5-1)The inverter turns on the inside Grid-connected
relay
(5-2)Detect level of UV [L2] is increased at the point of
0.5V/s
(5-3)Grid-connected relays are disconnected, when UV
[L2] detect level keeps above the grid voltage for
more than UV [L2] detect time
(5-4)Detect level and detect time of UV [L2] detected in
(5-3) are shown. (Display for ten seconds.)
AutoTest:UV [L2]
230.02V / 184.00V
The grid voltage of L2
Setup level of UV [L2]
[e.g.] in the case of 230.02V
[e.g.] in the case of 184.00V
(6)
The Auto
Test of
UV [L3]
(6-1)The inverter turns on the inside Grid-connected
(6-2)Detect level of UV [L3] is increased at the point of
(6-3)Grid-connected relays are disconnected, when UV
(6-4)Detect level and detect time of UV [L3] detected in
relay
0.5V/s
[L3] detect level keeps above the grid voltage for
more than UV [L3] detect time
(6-3) are shown. (Display for ten seconds.)
AutoTest:UV [L3]
230.02V / 184.00V
The grid voltage of L3
Setup level of UV [L3]
[e.g.] in the case of 230.02V
[e.g.] in the case of 184.00V
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Items Sequences during the auto test LCD
The frequency of the grid
[e.g.] in the case of 50.00Hz
Setup level of OF
[e.g.] in the case of 50.30Hz
AutoTest:OF
50.00Hz / 50.30Hz
The frequency of the grid
[e.g.] in the case of 50.00Hz
Setup level of UF
[e.g.] in the case of 49.70Hz
AutoTest:UF
50.00Hz / 49.70Hz
AutoTest:UF
49.99Hz / 90ms
Result of UF
Detect level of UF
[e.g.] in the case of 49.99Hz
Detect time of UF
[e.g.] in the case of 90ms
After displaying for ten seconds,
grid-connected operation is started
automatically and normal display is shown.
(7)
The Auto
Test of
OF
(7-1)The inverter turns on the inside Grid-connected
relay
(7-2)Detect level of OF is decreased at the point of
0.05Hz/s
(7-3)Grid-connected relays are disconnected, when OF
detect level keeps below the grid voltage for more
than OF detect time
(7-4)Detect level and detect time of OF detected in
(7-3) are shown. (Display for ten seconds.)
Result of OF
AutoTest:OF
50.01Hz / 90ms
3 Operation
3-6 Setting in Particular Countries
3
(8)
The Auto
Test of
UF
(8-1)The inverter turns on the inside Grid-connected
relay
(8-2)Detect level UF is increased at the point of
0.05Hz/s
(8-3)Grid-connected relays are disconnected, when UF
detect level keeps above the grid voltage for more
than UF detect time
(8-4)Detect level and detect time of UF detected in
(8-3) are shown. (Display for ten seconds.)
Detect level of OF
[e.g.] in the case of 50.01Hz
Detect time of OF
[e.g.] in the case of 90ms
After displaying for ten seconds,
start the auto test of UF
9
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3 Operation
AutoTest:UF
--- / ---
Error of Auto Test
The measurement becomes impossible when the power failure etc. occur, the LCD display shows "Example 1" ,
so the Auto Test error "E5-9 AutoTestFault" occurs, and KP100L stops. Afterwards, you can execute Auto Test
again according to the procedure of "The starting procedures for auto test".
[Examle 1]
Change of Set Value
The detect level of OF/UF can be changed according to the detect level change menu of the user setting as
follows. The setting should be 0 (OF is 50.50Hz and UF is 49.70Hz) as default.
You don't allow to change setting to 1 without ENEL agreement. You can only change setting by indication of
ENEL personnel as described in ENEL gideline.
Setting OF/UF Detect level
0
1
50.30Hz (OF-Detect level)
49.70Hz (UF-Detect level)
51.00Hz (OF-Detect level)
49.00Hz (UF-Detect level)
Setting of Germany
This section explains the setting when the country setting is Germany.
Change of Detect level
The detect level of OV can be changed according to the detect level change menu of the user setting as follows.
You can only change setting in consultation with grid operator
Setting OV Detect level
0 253.00V
1 264.50V
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3 Operation
Detect level of Each Country
The detect level (default value) of each country is the following. These level are set under consideration of
regulation value , tolerance, and detection time.
The detect level cannot be changed excluding the OF/UF level of Italy and the OV level of Germany.
3-6 Setting in Particular Countries
Set value item
OV Level [V] 253.00 253.00 276.00 264.50 253.00 264.50 253.00 253.00 253.00 249.80
Time [s] 0.15 4.90 0.10 0.15 0.45 0.15 0.15 4.90 0.15 599.90
UV Level [V] 184.00 195.50 184.00 195.50 176.00 195.50 184.00 195.50 184.00 209.60
Time [s] 0.15 4.90 0.20 0.15 0.45 0.15 0.15 4.90 0.15 599.90
OF Level [Hz] 50.15 50.90 50.30 50.50 50.50 50.50 50.15 50.90 50.15 51.45
Time [s] 0.15 4.90 0.10 0.15 0.45 0.15 0.15 4.90 0.15 59.90
UF Level [Hz] 48.50 49.10 49.70 49.50 49.50 49.50 48.50 49.10 48.50 48.55
Time [s] 0.15 4.90 0.10 0.15 0.45 0.15 0.15 4.90 0.15 59.90
Reconnection
time [s]
*1 Before connecting the grid, it is examined if the voltage and frequency of the grid remains within the tolerance area
pursuant to VDE0126-1-1 4.2.1, 4,2,2 and 4.3 for 30 seconds. The connection and feeding cannot be carried out unless
voltage and frequency of the grid remain within the tolerance pursuant to VDE0126-1-1 4.2 and 4.3 for 5 seconds.
*2 Before connecting the grid, it is examined if the voltage and frequency of the grid remains within the tolerance for 30
seconds.
Germany
5.5(*1) 180.5
Spain Italy France Greece Czech
(*2)
20.5 5.5(*1) 180.5
(*2)
Denmark Portugal
5.5(*1) 5.5(*1) 180.5
(*2)
Turkey RSA
5.5(*1) 5.5(*1)
"The detect level" and "the detect time" of "OF" and "UF" of South Africa are the master value. In the design,
"OF", and "UF" are detected by following "the detect level" and "the detect time".
Set value item Level[Hz] Time[s]
OF 51.45 or more Within 59.9
51.95 or more Within 9.9
53.95 or more Within 0.9
UF 48.55 or less Within 59.9
48.05 or less Within 9.9
47.55 or less Within 5.9
46.05 or less Within 0.9
3
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3 Operation
■■■■■■■■■
MODE
After one second pass
Pattern A
Pattern B
Pattern C
Pattern D
Pattern E
Pattern F
Pattern G
Push the ENT key for 5 second
After one second pass
After one second pass
After one second pass
After one second pass
After one second pass
After one second pass
LCD Check Display
■■■ V1.23■■■
■■■■■■■■■
■■■■■■■■■
■■■■■■■■■
■■■■■■■■■
■■■
V1.23■■■
■■■
KP100L
■■■
■■■
KP100L
■■■
or
No operation for 150 seconds
Pac 3.69kW
1.23/1.23/1.23kW
■■■■■■■■■
3-7 Confirm method of LCD display
This function is used as a function to judge whether it is a breakdown of LCD, if LCD is not displayed.
The display changes into the checking display of the LCD when you push the ENT key for 5 second while shown
normal display or error display. The following figure is displayed for checking the breakdown of the display part.
The LED (green, red) lights except Pattern A.
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Maintenance Operations
4-1 Outline of error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-2 Remedy for errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-3 Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4-4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4
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4 Maintenance Operations
4-1 Outline of error
Refer to " Appendix-1 Error list " for detail of each error.
4 - 2
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4-2 Remedy for errors
The following tables have described the method of measures to each error.
E1-0: No Utility
Situation Inverter is not able to detect AC voltage.
1. Grid is not available.
2. AC connection is not correct
Possible Cause
Remedy for User
Remedy for Professional (*1)
*1 Professional means qualified personnel such as installers, electrical technicians,
or service and maintenance engineers.
3. AC switch between Inverter and utility is not ON.
4. AC fuse and/or breaker is open.
5. Inverter is abnormal.
1. Make sure the breaker and switch on AC side are close. Operation will restart
automatically when the grid voltage returns to normal.
2. Check the AC wiring.
3. If the problem persists, contact the store from which you purchased the product or
your installer.
1. Make sure the breaker and switch on AC side are close.
2. Check the AC wiring.
3. If the problem persists, please replace the Inverter.
4 Maintenance Operations
4-2 Remedy for errors
4
E1-1: Over voltage (Grid)
Situation OV (AC over voltage) error due to rise of the grid voltage.
1. The detected AC voltage is beyond the setting of Inverter.
2. AC connection is not correct.
Possible Cause
Remedy for User
Remedy for Professional
3. Grid condition is weak or unstable.
4. Other high-power consumption device is affecting the grid system.
5. Inverter is abnormal.
1. If this problem occurs seldom (such as 1 time a day), no action is necessary.
Operation will restart automatically when the grid voltage returns to normal.
If the problem occurs frequently, do the actions below.
2. Find the device with high power consumption near your AC system.
3. Consult your utility power supplier, understand the grid conditions.
4. Ask help of your installer.
1. Check the system connection including polarities and security first.
2. Find the devices with high power consumption near the AC system.
3. Consult the utility power supplier, understand the grid conditions.
4. Use Inverter software to monitor the frequency and voltage.
5. If the situation is not improved, please replace the Inverter.
9
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4 Maintenance Operations
E1-2: Under voltage (Grid)
Situation UV (AC under voltage) error due to drop of the grid voltage.
1. The detected AC voltage is under the setting of Inverter.
2. AC connection is not correct.
Possible Cause
Remedy for User
Remedy for Professional
3. Grid condition is weak or unstable.
4. Other high-power consumption device is affecting the grid system.
5. Inverter is abnormal.
1. If this problem occurs seldom (such as 1 time a day), no action is necessary.
Operation will restart automatically when the grid voltage returns to normal.
If the problem occurs frequently, do the actions below.
2. Find the device with high power consumption near your AC system.
3. Consult your utility power supplier, understand the grid conditions.
4. Ask help of your installer.
1. Check the system connection including polarities and security first.
2. Find the devices with high power consumption near the AC system.
3. Consult the utility power supplier, understand the grid conditions.
4. Use Inverter software to monitor the frequency and voltage.
5. If the situation is not improved, please replace the Inverter.
E1-3: Over frequency (Grid)
Situation OF (over frequency) error due to rise of the grid frequency.
1. The detected AC frequency is beyond the setting of Inverter.
2. AC connection is not correct.
Possible Cause
Remedy for User
Remedy for Professional
3. Grid condition is weak or unstable.
4. Other high-power consumption device is affecting the grid system.
5. Inverter is abnormal.
1. If this problem occurs seldom (such as 1 time a day), no action is necessary.
Operation will restart automatically when the grid voltage returns to normal.
If the problem occurs frequently, do the actions below.
2. Find the device with high power consumption near your AC system.
3. Consult your utility power supplier, understand the grid conditions.
4. Ask help of your installer.
1. Check the system connection including polarities and security first.
2. Find the devices with high power consumption near the AC system.
3. Consult the utility power supplier, understand the grid conditions.
4. Use Inverter software to monitor the frequency and voltage.
5. If the situation is not improved, please replace the Inverter.
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4 Maintenance Operations
E1-4: Under frequency (Grid)
Situation UF (under frequency) error due to drop of the grid frequency.
1. The detected AC frequency is under the setting of Inverter.
2. AC connection is not correct.
Possible Cause
Remedy for User
Remedy for Professional
3. Grid condition is weak or unstable.
4. Other high-power consumption device is affecting the grid system.
5. Inverter is abnormal.
1. If this problem occurs seldom (such as 1 time a day), no action is necessary.
Operation will restart automatically when the grid voltage returns to normal.
If the problem occurs frequently, do the actions below.
2. Find the device with high power consumption near your AC system.
3. Consult your utility power supplier, understand the grid conditions.
4. Ask help of your installer.
1. Check the system connection including polarities and security first.
2. Find the devices with high power consumption near the AC system.
3. Consult the utility power supplier, understand the grid conditions.
4. Use Inverter software to monitor the frequency and voltage.
5. If the situation is not improved, please replace the Inverter.
4-2 Remedy for errors
E1-5: Islanding passive
Situation Islanding operation detected by passive method due to error in the power from the grid.
1. AC connection is not correct.
Possible Cause
Remedy for User
Remedy for Professional
2. Grid condition is weak or unstable.
3. Other high-power consumption device is affecting the grid system.
4. Inverter is abnormal.
1. If this problem occurs seldom (such as 1 time a day), no action is necessary.
Operation will restart automatically when the grid voltage returns to normal.
If the problem occurs frequently, do the actions below.
2. Find the device with high power consumption near your AC system.
3. Consult your utility power supplier, understand the grid conditions.
4. Ask help of your installer.
1. Check the system connection including polarities and security first.
2. Find the devices with high power consumption near the AC system.
3. Consult the utility power supplier, understand the grid conditions.
4. Use Inverter software to monitor the frequency and voltage.
5. If the situation is not improved, please replace the Inverter.
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4 Maintenance Operations
E1-6: Islanding active
Situation Islanding operation detected by active method due to error in the power from the grid.
1. AC connection is not correct.
Possible Cause
Remedy for User
Remedy for Professional
2. Grid condition is weak or unstable.
3. Other high-power consumption device is affecting the grid system.
4. Inverter is abnormal.
1. If this problem occurs seldom (such as 1 time a day), no action is necessary.
Operation will restart automatically when the grid voltage returns to normal.
If the problem occurs frequently, do the actions below.
2. Find the device with high power consumption near your AC system.
3. Consult your utility power supplier, understand the grid conditions.
4. Ask help of your installer.
1. Check the system connection including polarities and security first.
2. Find the devices with high power consumption near the AC system.
3. Consult the utility power supplier, understand the grid conditions.
4. Use Inverter software to monitor the frequency and voltage.
5. If the situation is not improved, please replace the Inverter.
E1-7: Over voltage instantly (Grid)
Situation The grid voltage exceeds 280 V.
1. AC connection is not correct.
Possible Cause
Remedy for User
Remedy for Professional
2. Grid condition is weak or unstable.
3. Other high-power consumption device is affecting the grid system.
4. Inverter is abnormal.
1. If this problem occurs seldom (such as 1 time a day), no action is necessary.
Operation will restart automatically when the grid voltage returns to normal.
If the problem occurs frequently, do the actions below.
2. Find the device with high power consumption near your AC system.
3. Consult your utility power supplier, understand the grid conditions.
4. Ask help of your installer.
1. Check the system connection including polarities and security first.
2. Find the devices with high power consumption near the AC system.
3. Consult the utility power supplier, understand the grid conditions.
4. Use Inverter software to monitor the frequency and voltage.
5. If the situation is not improved, please replace the Inverter.
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E1-8: Under voltage instantly (Grid)
Situation The grid voltage drops below 110V.
1. AC connection is not correct.
Possible Cause
Remedy for User
Remedy for Professional
2. Grid condition is weak or unstable.
3. Other high-power consumption device is affecting the grid system.
4. Inverter is abnormal.
1. If this problem occurs seldom (such as 1 time a day), no action is necessary.
Operation will restart automatically when the grid voltage returns to normal.
If the problem occurs frequently, do the actions below.
2. Find the device with high power consumption near your AC system.
3. Consult your utility power supplier, understand the grid conditions.
4. Ask help of your installer.
1. Check the system connection including polarities and security first.
2. Find the devices with high power consumption near the AC system.
3. Consult the utility power supplier, understand the grid conditions.
4. Use Inverter software to monitor the frequency and voltage.
5. If the situation is not improved, please replace the Inverter.
4 Maintenance Operations
4-2 Remedy for errors
E2-1: Over voltage (DC)
Situation The detected PV voltage is higher than specification.
Possible Cause
Remedy for User
Remedy for Professional
1. The PV array voltage is too high.
2. Inverter is abnormal.
1. If the fault continues, contact the store from which you purchased the product or your
installer.
1. Check the open PV voltage, and see if it is more than or too close to specification.
2. If PV voltage is much less than specification and the problem still occurs, please
replace the Inverter.
E2-3: Ground I Fault
Situation The fault current detected by the Inverter is higher than threshold.
1. Obstacle, humidity or water exits between AC LINE and/or NEUTRAL to earth
ground.
Possible Cause
Remedy for User
Remedy for Professional
2. Obstacle, humidity or water exits between AC LINE and/or NEUTRAL to earth ground
in the junction box.
3. The Insulation of AC wires is broken that could be bit by rat or any animals.
4. Inverter is abnormal.
1. Disconnect AC connection of Inverter by opening AC switch.
2. Check the AC junction box and wiring of system. Clear obstacle ONLY IN SAFE
CONDITIONS
3. Reconnect AC connection, check the status of Inverter.
4. If the problem persists, contact the store from which you purchased the product or
your installer.
1. Disconnect AC side of Inverter by opening AC switch.
2. Disconnect the DC side from the Inverter.
3. Check both the AC and DC wiring and insulation.
4. Reconnect AC connection, check the status of Inverter
5. If the problem persists, please replace the Inverter.
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4 Maintenance Operations
E2-4: Insulation resistance fault
Situation Insulation resistance drops in the solar module equipment.
Possible Cause 1. The PV array installation or the array themselves might be faulty.
1. Make sure the breaker and switch on AC side are close. Operation will restart
automatically when the grid voltage returns to normal.
Remedy for User
Remedy for Professional
E3-4: Over Temperature
Situation KP100L internal temperature is high.
Possible Cause
Remedy for User
Remedy for Professional
2. Check the AC wiring
3. If the problem persists, contact the store from which you purchased the product or
your installer.
1. Make sure the breaker and switch on AC side are close.
2. Check the AC wiring
3. If the problem persists, please replace the Inverter.
1. Ambient temperature is too high.
2. Heat dissipation problem
3. Inverter is abnormal.
1. Make sure the ambient temperature of installation is less than 60C. Operation will
restart automatically when the temperature returns to normal.
2. Check the space near the heat sink.
3. Remove any obstacle that block the heat dissipation near heat sink
4. If the problem persists, contact the store from which you purchased the product or
your installer.
1. Make sure the ambient temperature of installation is less than 60C.
2. Check the space near the heat sink.
3. Remove any obstacle that block the heat dissipation near heat sink.
4. If the problem persists, please replace the Inverter.
A2-5: Abnormality of fan
Situation The rotational speed of the fan decreases below the threshold.
1. Something is blocking the ventilation holes.
Possible Cause
Remedy for User
Remedy for Professional
2. The end of life time of the fan.
3. The fan is abnormal.
1. If something is blocking the heat sink, remove it.
2. If nothing is blocking the heat sink, the fan may have reached the end of its service
life. Contact the store from which you purchased the product or your installer.
1. If something is blocking heat sink, remove it.
2. If nothing is blocking heat sink, the fan may have reached the end of its service life.
3. Change the fan according to Chapter 5.
Other Errors
Situation The KP100L detects an abnormality.
Possible Cause
Remedy for User 1. Contact the store from which you purchased the product.
Remedy for Professional
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The main ground-fault breaker (RCD) trips frequently.
Situation
Possible Cause
Remedy for User
Remedy for Professional
Ground faults are being caused by electrical appliances, the KP100L, or the solar
modules.
1. Check to make sure that the ground faults are not being caused by electrical
appliances.
2. If no abnormalities are found, contact the store from which you purchased the
product to measure the insulation resistance of the KP100L and the solar modules. Also
describe the circumstances under which the problem happens (for example, the
problem occurs on the morning after a rainy day, etc.).
4 Maintenance Operations
4-2 Remedy for errors
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