SolarEdge 2.2KW, 7.5KW, 11KW User Manual

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2.2KW/7.5KW/11KW

Solar Inverter for Water Pump

Version: 1.1

User Manual

Table Of Contents

ABOUT THIS MANUAL ...................................................................................................................................... 1

Purpose ............................................................................................................................................................ 1

Scope ............................................................................................................................................................... 1

SAFETY INSTRUCTIONS ................................................................................................................................... 1

Inspection ......................................................................................................................................................... 1

Installation ........................................................................................................................................................ 1

Operation ......................................................................................................................................................... 2

Maintenance .................................................................................................................................................... 2

INTRODUCTION ................................................................................................................................................. 3

Features ........................................................................................................................................................... 3

Basic System Architecture ............................................................................................................................... 3

Product Overview ............................................................................................................................................. 4

INSTALLATION ................................................................................................................................................... 5

Unpacking and Inspection................................................................................................................................ 5

Preparation ...................................................................................................................................................... 5

Mounting the Unit ............................................................................................................................................. 5

PV Connection ................................................................................................................................................. 6

AC Output (Motor) Connection ........................................................................................................................ 7

AC Input Connection ........................................................................................................................................ 8

Final Assembly ................................................................................................................................................. 9

Control Signal Connection (Optional) ............................................................................................................ 10

COMMISSIONING ............................................................................................................................................. 10

OPERATION ...................................................................................................................................................... 11

Power ON/OFF .............................................................................................................................................. 11

Operation and Display Panel ......................................................................................................................... 11

Parameter Setting .......................................................................................................................................... 12

Fault and Warning Code ................................................................................................................................. 15

Fault Reference Code .................................................................................................................................... 15

Warning Reference Codes ............................................................................................................................. 16

SPECIFICATIONS ............................................................................................................................................. 17

ABOUT THIS MANUAL

Purpose

This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read

this manual carefully before installations and operations. Keep this manual for future reference.

Scope

This manual provides safety and installation guidelines as well as information on tools and wiring.

SAFETY INSTRUCTIONS

WARNING: This chapter contains important safety and operating instructions. Read and

keep this manual for future reference.

Inspection

If missing components or damaged inverter is found after receiving, please do NOT install or operate it.

Otherwise, it may cause human injury or equipment damage.

Installation

1. Before installation, please make sure if the phases and nominal voltage of power sources meet the

requirement.

2. Check if all wires are firmly connected without short circuit. Otherwise, it will cause equipment damage.

3. Do NOT install this inverter under direct sunlight because high temperature may cause equipment damage.

4. Please install the inverter away from inflammable and explosive objectives. Please ensure no liquid can

enter the inverter.

5. Please install the inverter on metal non-combustible surface.

1. CAUTION!! Only qualified personnel can install and operate this inverter.

2. To reduce risk of electric shock, disconnect power source before making wire connection. Otherwise, it may

cause electrical shock.

3. To reduce risk of electric shock, NEVER touch any terminals on electric circuits.

Operation

1. Only after wire connection is complete and put cover back to the inverter, it’s ok to do commissioning.

Otherwise, it will cause electric shock

2. If sunlight is sufficient but little water is pumped, maybe the wires on motor connection are reversely

connected. Please reverse any two wires of them.

3. When testing water pump, be sure to install water pump at appropriate water level. Never allow water

pump in dry running. Otherwise, the inverter will activate protection.

Maintenance

1. Only qualified personnel can maintain, repair, inspect the inverter and replace any components.

2. It may still contain energy after disconnecting power source for 10 minutes. Only service the unit after the

bus voltage is within safe range.

INTRODUCTION

Interest in renewable energy has increased over the past few years due to solar power becoming more cost

effective and eco-friendly. This is a solar inverter which allows power to be switched from the DC power

obtained from solar panels to the AC power needed to control the pump. This solar inverter is also accepted

manually from the grid or 3-phase generator when solar power is not efficient. With the renewable solar

inverter, pumps can adapt to solar power sources rather than traditional electrical supplies or generators.

This solar inverter is built-in with MPPT solar charger to maximize solar power. Besides, it is easy to install with

low maintenance cost. It becomes an eco-friendly solution for the rural areas where grid power is expensive

and unreliable.

Features

 Built-in MPPT solar charger  Supports three-phase asynchronous motor  Compatible to utility or generator input  Built-in full protection and self-diagnosis  Soft start function prevents water hammer effect and extends system lifecycle  Comprehensive LCD and LEDs display real-time system status  Remote monitoring through RS-485

Basic System Architecture

This solar inverter is specially designed to power water pump. The following illustration shows basic application

for this inverter. It also includes following devices to have a complete running system:

 3-phase generator or Utility.

 PV modules

Product Overview

1. PV input

2. AC input

3. AC output

4. RS-485 communication port

5. RS-232 communication port

6. Signal control slot

7. Display screen (Refer to Operation and Display Panel for the details)

8. LED indicators (Refer to Operation and Display Panel for the details)

9. Operation buttons (Refer to Operation and Display Panel for the details)

INSTALLATION

Unpacking and Inspection

Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have received the following items inside of package:

 The unit x 1  User manual x 1  RJ45 cable x 1  RS-232 cable x 1

Preparation

Before connecting all wirings, please take off bottom cover by removing two screws as shown below.

Mounting the Unit

Consider the following points before selecting where to install:

 Do not mount the inverter on flammable construction

materials.

 Mount on a solid metal surface.  Avoid direct sunlight. Be sure the environment is shady and

cool.

 Be sure to install the inverter into a box with waterproof and

dustproof.

 Install this inverter at eye level in order to allow the LCD

display to be read at all times.

 The recommended installation position is to be adhered to

the wall vertically.

 Be sure to keep other objects and surfaces as shown in the

diagram to guarantee sufficient heat dissipation and to

have enough space for removing wires.

SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.

1. Drill four holes in the marked locations with four

screws.

2. Install the unit by screwing four screws. It’s

recommended to use M5 screws.

PV Connection

CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter

and PV modules. The recommended spec of DC breaker is C8A/2P/1000VDC/25KA for 2.2KW,

C32A/2P/1000VDC/25KA for 7.5KW and C40A/2P/1000VDC/25KA for 11KW.

NOTE: It’s required to install PV combiner box when using several PV modules in parallel and series.

CAUTION: Important

If there is no diode protection for current backfeed protection between PV module and inverter, please do not

turn on AC and DC breakers at the same time. Otherwise, it will cause damage on PV modules.

CAUTION: Important

Before making PV connection, be sure to do the following actions to prevent human injury or machine damage.

1. It’s required to turn off circuit breaker.

2. Make sure connect positive pole (+) of PV input connector in inverter to positive pole (+) of PV modules and

negative pole (-) of PV input connector in inverter to negative pole (-) of PV modules.

3. Make sure AC input power source is disconnected.

PV Module Selection: When selecting proper PV modules, please be sure to consider below parameters:

1. Open circuit Voltage (Voc) of PV modules not exceeds max. DC voltage (800VDC).

2. Accumulated voltage of connected PV panels should be close to 560V for inverter with 380V output voltage.

Take 255Wp PV module as an example. After considering above two parameters, the recommended module configuration for 7.5KW inverter is listed as below table.

Inverter Model

7.5KW

Rated Output Power (Po)

7.5KW

Calculation:

1. 560V/Vmpp=panel number N

N= 560V/30.4=18.4pcs ≒ 19

2. Check if Voc: N*Voc < 800V. If not, please

reduce the panel N number to get the value lower than 800. 19*37.5(Voc)=712.5V < 800V

3. Panel numbers in parallel (M):

M Po/(N*Pmax/Ƞ efficiency). M=7.5KW/(19*255/0.97)=1.6≒2

19 pieces in serial and 2 sets in parallel

Maximum Power (Pmax)

255W

Max. Power Voltage Vmpp(V)

30.4V

Max. Power Current Impp(A)

8.56A

Open Circuit Voltage Voc(V)

37.5V

Short Circuit Current Isc(A)

9.12A

AC Output (Motor) Connection

CAUTION!! There are two terminal blocks with “AC INPUT” and “AC OUTPUT” markings. Be sure to connect

motor with “AC OUTPUT” terminals. Please do NOT mis-connect input and output connectors.

WARNING! All wiring must be performed by a qualified personnel. WARNING! It's very important for system safety and efficient operation to use appropriate cable for AC output

connection. To reduce risk of injury, please use the proper recommended terminal and cable size as below.

Recommended terminal types:

Suggested cable requirement:

Model

Typical

Amperage

Wire size

Terminal

Torque Value

Dimensions

d (mm)

D (mm)

2.2KW

4.8A

18 AWG

4.5

9.5

1.3 ~ 1.4 Nm

7.5KW

15A

13 AWG

4.5

9.5

1.3 ~ 1.4 Nm

11KW

22A

11 AWG

4.5

9.5

1.3 ~ 1.4 Nm

Please follow below steps to implement motor connection:

1. Remove insulation sleeve 10mm for three conductors. And shorten three conductors 3 mm.

2. Insert wires according to polarities indicated on terminal block and tighten the terminal screws.

NOTE: To reverse the direction of motor rotation, reverse any two wires.

Black (BLK)

Red (RED)

Yellow (YEL)

Ground (GND)

International

Gray (GRY)

Black (BLK)

Brown (BRN)

Ground (GND)

International standards for motor lead wire

3. Make sure the wires are securely connected.

AC Input Connection

CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between

inverter and AC input power source. This will ensure the inverter can be securely disconnected during

maintenance and fully protected from over current of AC input. The recommended spec of AC breaker is

D10A/3P/400VAC/25KA for 2.2KW, D25A/3P/400VAC/25KA for 7.5KW and D32A/3P/400VAC/25KA for 11KW.

CAUTION!! There are two terminal blocks with “AC INPUT” and “AC OUTPUT” markings. Be sure to connect

motor with “AC OUTPUT” terminals. Please do NOT mis-connect input and output connectors.

WARNING! All wiring must be performed by a qualified personnel. WARNING! It's very important for system safety and efficient operation to use appropriate cable for AC input

connection. To reduce risk of injury, please use the proper recommended terminal and cable size as below.

Suggested terminal types:

Suggested cable requirement:

Model

Typical

Amperage

Wire

Terminal

Torque Value

Dimensions

d (mm)

D (mm)

2.2KW

5.4A

17 AWG

4.5

9.5

1.3 ~ 1.4 Nm

7.5KW

18.5A

12 AWG

4.5

9.5

1.3 ~ 1.4 Nm

11KW

27.1A

10 AWG

4.5

9.5

1.3 ~ 1.4 Nm

Please follow below steps to implement AC input connection:

1. Before making AC input connection, be sure to open AC protector or disconnector first.

2. Remove insulation sleeve 10mm for three conductors. And shorten three conductors 3 mm.

3. Insert wires according to polarities indicated on terminal block and tighten the terminal screws.

WARNING:

Be sure that AC power source is disconnected before attempting to hardwire it to the unit.

4. Make sure the wires are securely connected.

If sunlight is not sufficient or the weather is raining or cloudy, please be sure to manually switch AC input power source to utility or backup AC power source (generator) to guarantee water pump running all the time.

Final Assembly

After connecting all wirings, please put bottom cover back by screwing two screws as shown below.

CAUTION: Important

Only one input power source is connected to the inverter anytime. Otherwise, it will cause inverter damage or

human injury.

Control Signal Connection (Optional)

This control signal ports are to detect water level to prevent water pump from dry running and water tank from

overflow/underflow.

Water level detector:

It’s to prevent the water pump dry running by connecting to water level probe. The length of connecting wire

should not longer than 50m. If the water level is normal in the well, please keep the water level detector in

normal closed status. If the water level is low in the well, the water level detector will be open status. If this

port is not connected to water level probe, be sure to connect COM1 and DI3 together. It’s default setting from

factory.

Remote float switch:

It’s to prevent water tank overflow or underflow by sensing a remote float switch in water tank. When water

tank is full, it will receive “full-water” signal (open status on DI1 and closed status on DI2 & COM2) from float

switch and stop the inverter. When water tank is in low level, it will receive signal (closed status on DI1 &

COM2 and open status on DI2) from float switch and start up the inverter. This action is only available when

the auto turn-on function is enabled. If the water level is normal, DI1 and COM2 are normally in open status.

COMMISSIONING

Step 1: Check the following requirements before commissioning:

 Ensure all wires are firmly and correctly connected  Use a megger to check insulation of motor and wires  Check if the open circuit DC voltage of PV module meets requirement

Step 2: Switch on DC breaker and provide power to the inverter. Then, LCD screen will show 0.00. Please set up

the parameters of the inverter such as rated power, rated frequency, rated current and rated voltage. For the

detailed setting, please check “Parameter setting” section in Operation chapter.

Step 3: Press “RUN” button to activate the inverter. If the output frequency or water yield is low, it may be

wrong for output wire connection. Please exchange any two wires connected to the motor. Please be sure the

output frequency and water yield are normal. It means the wire connection is correct and complete.

OPERATION

Power ON/OFF

Once the unit has been properly installed, simply press “RUN” button (located on the button area) to turn

on the unit.

Operation and Display Panel

The operation and display panel, shown in below chart, is on the top case of the inverter. It includes four

indicators, six function buttons and a display screen, indicating the operating status and input/output

power information.

LED Indicator

Messages

Green

Solid On

Output frequency value is displayed on the LCD screen.

Green

Solid On

Output current value is displayed on the LCD screen.

Green

Solid On

Output voltage value is displayed on the LCD screen.

A and V

Green

Solid on

Output power value is displayed on the LCD screen.

STOP/RUN

Green

Solid on

The inverter is running.

Green

OFF

The inverter stops.

Function Buttons

Function Button

Description

Esc/PROG

To enter or exit setting mode.

ENTER

To confirm the selection/value in setting mode.

RUN

To turn on the unit, press this button for at least 1 second.

Display screen Function buttons

LED indicators

STOP/RST

 To turn off the unit, press this button for at least 1 second.  To reset fault message, press this button for at least 1 second.

To increase the setting value.

To decrease the setting value.

and ENTER

Press these two buttons at the same time to move cursor location.

Parameter Setting

The entire display setting program structure is demonstrated as below chart.

Currently, parameter setting is not authorized for end user to modify. Please check local dealer or installer for

the details. 〇: This parameter can be modified no matter the inverter is in operation or off status.

◎: This parameter can not be modified when inverter is in operation.

Program #

Description

Setting Range

Unit

Default Value

Note

P0 Parameter settings for the motor

P0.00

Nominal power

factor

10-11000

7500

◎

P0.01

Nominal

frequency

50/60

◎

P0.02

Nominal voltage

323-506

380

◎

P0.03

Nominal current

0.1-60

◎

P0.04

Upper limit for

frequency

10 – setting

value in P0.01

◎

P0.05

Low limit for

frequency

10 – setting

value in P0.04

◎

P1 Over-current device on the motor and torque increasing

P1.00

Maximum

current limit

10-200

110

A multiple of

nominal current

〇

P1.01

Kp for max.

current control

50-6000

None

1000

〇

P1.02

Ki for max.

current control

5-1000

None

100

〇

P1.03

60S overload

protection

110-250

150

◎

P1.04

Overload

protection on

motor

110-250

200

◎

P1.05

Voltage for

torque

increasing

0-10 % 0

Percentage of

nominal voltage

P2 DC battery voltage setting

P2.00

Over DC voltage

protection

Setting value in

P2.01 - 800

800

◎

P2.01

Under DC

voltage

protection

320 – Setting

value in P2.00

320

◎

P2.02

PV reference

voltage

Setting value in

P2.01 – setting

value in P2.00

530

〇

CAUTION: Please be sure to set up Program P4.01 correctly. Otherwise, it will cause the inverter malfunction.

Program #

Description

Setting Range

Unit

Default Value

Note

P3 Protection setting for the inverter of the water pump

P3.00

Sleep mode while PV

energy is weak

10-3600

120

〇

P3.01

Sleep mode for dry

running

10-7200

1200

〇

P3.02

Over temperature fault

on inverter

60-100

℃

◎

P3.03

Over temperature

warning on inverter

10 – setting value

in P3.02

℃

〇

P3.04

Acceleration time for

motor

5-3600

◎

P3.05

Deceleration time for

motor

5-3600

◎

P4 Inverter operation mode setting

P4.00

MPPT function

enable/disable

0：Disable.

Control PV

voltage in setting

value of P2.02

1：Enable

None

◎

P4.01

Input source

0：PV input

1: AC input

None

◎

P4.02

Auto turn-on

0：Disable

1：Enable

None

◎

P5 User password setting and restore to default setting

P5.00

User password setting

0-9999

None

〇

P5.01

Restore to default setting

0：No

1：Yes

None

◎

Fault and Warning Code

All fault and warning codes can be reset by pressing “RST” button except for A07 and A11. When faults or

warning occur, press “RST” button and the inverter will enter standby mode. Please press “RUN” button to turn

on the inverter for operation again.

After A02 or A03 warning occurs, the inverter will auto restart operation after a period of sleep mode. If

pressing “RST” button during sleep mode, please be sure to press “RUN” button again for operation.

Fault Reference Code

Fault code

Fault type

Possible Cause

E01

Zero-crossing detection loss on output voltage.

1. There is something wrong with the

zero-crossing detection circuit.

2. There is something wrong with driver circuit.

3. PV input power is low.

E02

Time out for BUS soft start

The resistor of soft start is broken.

E03

Relay fault

The Relay is broken.

E04

Over voltage in output

1. Inverter control is abnormal.

2. Detection is interfered.

E05

Over current in output

1. Output short circuited.

2. The motor is suddenly locked.

3. The motor is abnormal.

E06

Output voltage RMS High

Inverter control is abnormal.

E07

High PV voltage

1. PV input voltage is too high.

2. There is something wrong with voltage

detection circuit.

E08

Current unbalance

1. Output phase loss

2. Output wire is short to the earth.

3. The motor is abnormal.

E09

Fan Locked

The fan is locked.

E10

Over Temperature

1. IGBT temperature is too high

2. The wire of IGBT temperature detection is not

connected.

E11

Over current.

1. Output short circuited.

2. The motor is suddenly locked.

3. The motor is abnormal.

Warning Reference Codes

Warning code

Warning type

Possible Cause

A01

PV input voltage is too low.

1. PV input voltage is too low.

2. Sunlight is too weak.

A02

Weak sunlight

Sunlight is too weak

A03

Dry running

Water level in the well is low.

A04

Overload

1. The motor is suddenly locked.

2. The pump head is too high.

3. Wrong current setting on the motor.

A05

Over current

1. The motor is suddenly locked.

2. Wrong current setting on the motor.

A06

EEPROM error

There is something wrong with EEPROM circuit.

A07

IGBT over temperature warning

Over temperature on IGBT.

A08

Over temperature warning

A09

Over temperature

1. Environment temperature is beyond the upper

limit.

2. The wire of environment temperature

detection is not connected.

A10

Wrong parameter setting in the motor.

A11

Water tank is full.

A12

Water tank is dry.

No water or water in low level in the water tower.

A13

Well is dry.

No water or water in low level in the well.

SPECIFICATIONS

MODEL

2.2KW

7.5KW

11KW

Maximum PV Array Power

3500 W

12000 W

17600 W

Rated Output Power

2200 W

7500 W

11000 W

PV INPUT (DC)

Maximum DC Voltage

800 VDC

Start-up Voltage

350 VDC

MPPT Voltage Range

500 VDC ~ 600VDC

Number of MPP Trackers

OPTIONAL AC INPUT

Input Voltage

3 x 380VAC/400VAC/415VAC/440VAC

Maximum Input Current

5.8 A

20.5 A

27 A

Apparent Power

4000 VA

11000 VA

16500 VA

OUTPUT

Nominal Voltage

3 x 380/400/415/440 VAC

Efficiency

> 97%

Output Current

5.1 A

17 A

26 A

Motor Type

Three-phase asynchronous motor

Frequency Precision

± 0.2%

PROTECTION

Full Protection

Over-voltage, under-voltage, over-current, surge, over-temperature and

short circuit protection

PHYSICAL

Dimension, D X W X H (mm)

110 x 230 x 342

Net Weight (kgs)

5.5 6 6.5

Type of Mechanical Protection

IP20

INTERACE

Communication Port

RS-232/RS-485

ENVIRONMENT

Humidity

< 95% RH (No condensing)

Operating Temperature

-20°C~45°C at 100% full load, 46°C~60°C power derating

SolarEdge 2.2KW, 7.5KW, 11KW User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual