GUANGDONG EAST POWER EA500 Series User manual

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Preface
Dear customer, thank you for using EA500 series PV grid-connected inverters
researched and produced by Guangdong East Power Co., Ltd. We sincerely hope this
product can meet your requirements and you are expected to make more suggestions on the
performance and functions of the product. We will continue to make progress and improve
quality of the product.
Please read this Manual carefully before use of the product. Please properly keep this
Manual and other information on product modules together for the access and use of relevant
personnel.
Contents, figures, logos and symbols in this Manual are exclusively owned by
Guangdong East Power Co., Ltd. Without written authorization, non-insiders of this Company
shall not openly reproduce all or part of them.
Contents of the Manual will be updated and amended constantly, however, it is inevitably
to have slight discrepancies or errors. Material object shall prevail. www.eastups.com or
marketing channel can be used for users to download the latest version of the Manual.

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Table of Contents
I. Manual Instructions..............................................................................- 4 -
1.1 Symbols ........................................................................................- 4 -
1.2 Readers.........................................................................................- 4 -
1.3 Effectiveness .................................................................................- 5 -
II. Safety Instructions and Precautions ..................................................- 6 -
2.1 Safety instructions .........................................................................- 6 -
2.2 Precautions ...................................................................................- 6 -
2.3 Operation cautions ........................................................................- 7 -
III. Introduction to EA500KTS/M Grid-connected Inverter .....................- 9 -
3.1 Application of grid-connected inverter ............................................- 9 -
3.2 Features of EA500KTS/M grid-connected inverter ....................... - 10 -
3.3 Circuit structure of EA500KTS/M ................................................. - 11 -
3.4 Operational unit of the inverter ..................................................... - 13 -
IV. Operation of LCD Touch Screen and Settings of System ............... - 16 -
4.1 Introduction to main interface ....................................................... - 16 -
4.2 Menu overview ............................................................................ - 17 -
4.3 System settings ........................................................................... - 18 -
4.3.1 Communication settings ...................................................... - 19 -
4.3.2 Time settings ...................................................................... - 20 -
4.3.3 Language settings .............................................................. - 21 -
4.3.4 Main control allowing settings ............................................. - 22 -
4.3.5 Debugging settings ............................................................. - 24 -
4.3.6 Correction on the total generating capacity ......................... - 25 -
4.3.7 Password change ............................................................... - 27 -
4.3.8 Factory settings reset.......................................................... - 28 -
4.3.9 System Upgrade Settings.................................................... - 30 -
4.4 On / Off operation ........................................................................ - 31 -
4.5 View running operation ................................................................ - 32 -
4.6 Fault query .................................................................................. - 34 -

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V. Test Run of System ........................................................................... - 38 -
5.1 Manual operation ......................................................................... - 38 -
5.2 Automatic operation ..................................................................... - 39 -
5.3 Introduction to working mode of EA500KTS/M grid-connected inverter . - 39 -
5.4 Monitoring mode .......................................................................... - 41 -
5.5 Power supply mode ..................................................................... - 43 -
5.5.1 Three-phase power supply mode ........................................ - 43 -
5.5.2 Single-phase power supply mode........................................ - 46 -
VI. Routine Maintenance ....................................................................... - 50 -
6.1 Maintenance service and cycle .................................................... - 50 -
6.2 Check and replace air filter screen ............................................... - 52 -
VII. Troubleshooting .............................................................................. - 54 -
Appendix A ............................................................................................ - 54 -
Appendix B ............................................................................................ - 60 -
1. Quality Assurance.......................................................................... - 60 -
2. Contact us ..................................................................................... - 61 -

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I. Manual Instructions
1.1 Symbols
Please read the following symbols contained in this Manual carefully for safe use of
EA500KTS/M grid-connected inverters.
1.2 Readers
Please read this Manual carefully for installation and operation of
EA500KTS/M grid-connected inverter. The Manual mainly contains the following
information:
 Safety instructions
It mainly introduces some safety precautions for operation and maintenance of
inverter.
 Introduction to products
It mainly introduces characteristics, structure and main components of inverter.

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 Operating instructions
It mainly introduces operation of inverter and usage of human-computer
interface and so on.
 Routine maintenance
It mainly introduces routine maintenance of inverter and replacement method of
some spare parts.
 Troubleshooting
It mainly introduces possible faults and solutions of inverter
 Others
It mainly introduces the technical parameters of the inverter, quality assurance
provisions and our contact information.
1.3 Effectiveness
This Manual is applicable to EA500KTS/M indoor grid-connected inverter.

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II. Safety Instructions and Precautions
Please read this Manual carefully before installation and operation. Any damage of
equipment caused by improper installation and operation shall not be covered within the
scope of warranty.
2.1 Safety instructions
2.2 Precautions
 The inverter should be transported, stored, assembled, installed, operated and
maintained correctly for normal and safe operation.
 All operations and wiring work must be completed by professional electrical or
mechanical engineer to ensure that all electrical installation conform to relevant
standards. For safe operation, it is required to have correct grounding and
necessary short-circuit protection.
 Before inspected or maintained, the inverter must be operated with DC side and
AC side uncharged.
 When PV array is installed during daytime, lighttight material should be used to
cover the solar array, or else the solar array will produce high voltage in the
sunlight.

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 Close AC disconnecting switch first after installation or maintenance, and then
break direct current. After direct current is broken, close DC disconnecting switch
of inverter first, then the DC disconnecting switch of DC power distribution cabinet,
and finally the DC disconnecting switch of combiner box successively. Please pay
attention to the order of operation, or else the inverter may be damaged.
 Follow the instructions for operation and installation in the document and fully
comply with all dangers, warnings and safety information.
2.3 Operation cautions
Operate with power on
Open the machine
Precautions before closing I/O switch of the machine:
 All lines are properly connected in accordance with the Manual.
 All grounding devices are grounded.
 The "EMERGENCY" button is in the reset state (should make sure the EA-type
PV inverter with start-stop knob is turned to "START").
 The accessed rated voltage, frequency and phase sequence are in line with the
working range of the machine.
 After check, DC voltage polarity is properly connected.
Boot sequence is as follows:
Boot the inverter only when the above is met.

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 Close the disconnecting switch at the AC output side of the inverter to "ON";
 Close the DC output air switch of a combiner box;
 Close the DC output air switch of DC distribution cabinet to the inverter (the step
can be ignored if it does not have the air switch);
 Close the two DC short circuiters at the input side of the inverter to "ON";
 Wait for 1 minute and then close other output air switches of the combiner box in
turn;
 Startup of the inverter is completed. (Remark: the inverter should be set in
automatic operation mode)
Note for shutdown:
In general, there are two cases for shutdown: one is normal shutdown for
maintenance and the other is emergency shutdown because of fault or emergency
situation. The shutdown sequences are as follows:
 Sequences of normal shutdown for maintenance: change the "Main Control
Allowing" in the protection parameters to 1, clock on "Off" button on the panel,
press down the "EMERGENCY" button (note: as for EA-type PV inverters with
start-stop knob on the door plank, only turn the start-stop knob to "STOP"), turn
the I/O disconnecting switch to "OFF" and then disconnect I/O front and back
switches of the inverter.
 Emergency shutdown because of fault or emergency situation: press down the
EMERGENCY button, turn I/O disconnecting switch to "OFF" and then
disconnect I/O front and back switches of the inverter.

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III. Introduction to EA500KTS/M Grid-connected
Inverter
3.1 Application of grid-connected inverter
As solar grid-connected inverter, EA500KTS/M is applicable to PV grid-connected
power generation system. In PV grid-connected power generation system, EA500KTS/M
grid-connected inverter can always make solar panel output the maximum power which
will be transmitted to power grid after converted by solar panel. PV grid-connected power
generation system is composed of PV modules, PV combiner box, PV grid-connected
inverter, metering device and distribution system, as shown in Fig. 3-1.
PV modules PV
combiner
box
PV
grid-connected
inverter
Metering device Grid
Fig. 3-1 PV Grid-connected Power Generation System

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3.2 Features of EA500KTS/M grid-connected inverter
 Use advanced IGBT power module
 Meet requirements of zero-voltage crossing and can deal with complex
environment of grid
 Use optical fiber transmission, fast and reliable
 High conversion efficiency
 Advanced maximum power point tracking (MPPT)
 MPPT efficiency> 99.9%
 Wide voltage input range
 High performance indicator within wide range of power
 Advanced anti-islanding technology
 Impeccable system protection function; advanced modular design, safe and
reliable
 Both MPPT and CVT operation mode
 Color LCD touch screen display
 Variety of communication interfaces
 Protection and running parameter can be set
 Easy for installation, operation and maintenance
You can learn important information of EA500KTS/M inverter through its nameplate.
See Fig. 3-2.
Fig. 3-2 Information of Nameplate

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3.3 Circuit structure of EA500KTS/M
Fig. 3-3 is the schematic diagram of EA500KTS/M inverter. The electric energy
produced by PV modules passes through the lightning protection device and DC
filter first. Lightning protection device absorbs DC surge voltage, DC filter inhibits
high-frequency signal transduction interference and capacitive energy storage
keeps DC voltage stable. Three-phase full-bridge inverter converts DC to AC with
same frequency and phase as power grid, produces sine-wave AC through filtering,
inhibits high-frequency signal transduction interference by AC filter and then sends
electric energy to power grid with proper inverter based on the actual situation.

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Fig. 3-3 Schematic Diagram of EA500KTS/M Inverter

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3.4 Operational unit of the inverter
Position of operational unit of EA500KTS/M is shown in Fig. 3-4.
Fig. 3-4 Distribution of Operational Unit
(1) Indicator light
Table 1 Instructions for indicator light
Name Color Description
POWER Green Control the power supply of circuit
WORKING Green The inverter works in grid-connected
power generation mode
ALARM Red Fault appears and has not been
eliminated
Indicator light
LCD touch screen
DC
Disconnecting
switch
AC
Disconnecting
switch
Door lock
Emergency stop switch /
Start-stop knob

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(2) LCD touch screen
It is available to achieve the following functions through LCD touch screen.
 To check the current operating parameters
 To check and change the operation mode
 To check and change the baud rate of communication
 To check the current and historical faults
 To check and change the setting of background lights
 To check and change the current time
(3) Emergency stop switch/start-stop knob (in case such switch is
equipped)
 Emergency stop switch can disconnect grid-connected inverter and power grid
immediately in abnormal operation of system for the safety of inverter. Upon
the elimination of fault, remember to disconnect the emergency stop switch
before rerun the system.
 Start-stop knob is used for the startup and shutdown of
machine. Turn the knob to "STOP" for shutdown or
restart of inverter and turn the knob to "START" after
POWER indicator light is off and faults are eliminated. In
normal operation, please keep the knob to "START".

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(4) DC disconnecting switch
DC disconnecting switch is a switch connecting inverter and PV modules. DC
disconnecting switch must be kept ON in the normal operation of inverter.
 In wiring, please turn the DC disconnecting switch to OFF to avoid the risk of electric
shock.
 During inspection and maintenance, please turn the DC disconnecting switch to OFF
and wait for 15 minutes to avoid the risk of electric shock. The DC voltage tested by
multimeter should be less than 10V for maintenance.
(5) AC disconnecting switch
AC disconnecting switch is a switch connecting inverter and power grid. The handle
of AC disconnecting switch must be kept ON in the normal operation of inverter.
Remember to disconnect AC disconnecting switch in the following cases:
 In wiring, please turn the handle of AC disconnecting switch to OFF.
 During inspection and maintenance, please turn the handle of AC disconnecting
switch to OFF and wait for 15 minutes to avoid the risk of electric shock.
 Press the emergency stop switch and the handle of AC disconnecting switch should be
turned to OFF and then ON for restoration of connected grid.

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IV. Operation of LCD Touch Screen and
Settings of System
4.1 Introduction to main interface
With power on, the touch screen will first enter the initialization interface. 5 seconds
later, it enters the following default main interface.
Initialization interface
Default main interface
Display current
status
Display current
time
Enter the
main menu
Current operating
parameters
On/Off
Display curve of
daily power
generation
Fault
information

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Main menu interface
4.2 Menu overview
Fig. 4-1 Full Figure of Menu on the LCD Touch Screen

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4.3 System settings
1. Enter the default main interface on the LCD.
2. Click on "Main Menu" to enter the main menu interface;
3. Click on "Settings", and the following interface of "Enter Password" appears;