SOLIS S6 Series, S6-GR1P1K-M, S6-GR1P2K-M, S6-GR1P3K-M Manual

Introduction

Product Description

This manual covers the S6 Mini Single Phase Inverter model listed below:
S6-GR1P1K-M, S6-GR1P2K-M, S6-GR1P3K-M.
See Figures 1.1-1.2

Packaging

When you receive the inverter, please ensure that all the parts listed below are included:

If anything is missing, please contact your local Solis distributor.

Product Storage

If the inverter is not to be installed immediately, storage instructions and environmental conditions are below:

• Use the original box to repackage the inverter, seal with adhesive tape with the desiccant inside the box.
• Store the inverter(s) in a clean and dry place, free of dust and dirt.
• Storage temperature must be between -40℃ and 70℃ and the humidity should be between 0 and 95% non-condensing.
• Stack no more than four (4) inverters high.
• Keep box(es) away from corrosive materials to avoid damage to the inverter enclosure.
• Inspect packaging regularly. If packaging is damaged(wet, pest damage, etc), repackage the inverter immediately.
• Store the inverter(s) on a flat, hard surface - not inclined or upside down.
• After long-term storage, the inverter needs to be fully examined and tested by qualified service or technical personnel before using.
• Restarting after a long period of non-use requires the equipment to be inspected and, in some cases, the removal of oxidation and dust that has settled inside the equipment will be required.

Safety Instructions

Safety Symbols

Safety symbols used in this manual, which highlight potential safety risks and important safety information, are listed as follows:

	WARNING: WARNING symbol indicates important safety instructions, which if not correctly followed, could result in serious injury or death.
	NOTE: NOTE symbol indicates important safety instructions, which if not correctly followed, could result in some damage or the destruction of the inverter.
	CAUTION: CAUTION, RISK OF ELECTRIC SHOCK symbol indicates important safety instructions, which if not correctly followed, could result in electric shock.
	CAUTION: CAUTION, HOT SURFACE symbol indicates safety instructions, which if not correctly followed, could result in burns.

General Safety Instructions

Only devices in compliance with SELV (EN 69050) may be connected to the RS485 and USB interfaces.

Please don't connect PV array positive(+) or negative(-) to ground, it could cause serious damage to the inverter.

NOTE:
PV module used with inverter must have an IEC 61730 Class A rating.

Electrical installations must be done in accordance with the local and national electrical safety standards.

No live construction is allowed, and before installation, ensure that the equipment is in good condition.

Do not touch any inner live parts until 5 minutes after disconnection from the utility grid and the PV input.

Risk of electric shock. Do not remove cover. There is no user serviceable parts inside. Refer servicing to qualified and accredited service technicians.

To reduce the risk of fire, over-current protective devices (OCPD) are required for circuits connected to the Inverter. The DC OCPD shall be installed per local requirements. All photovoltaic source and output circuit conductors shall have disconnectors that comply with the NEC Article 690, Part II.

The PV array (Solar panels) supplies a DC voltage when they are exposed to sunlight.

Destruction of the inverter due to overvoltage; Damage to the product due to ground fault on DC side during operation; Damage to the product due to sand, dust and moisture ingress if the DC inputs are not closed.

The surface temperature of the inverter can exceed 75℃ (167F). To avoid risk of burns, DO NOT touch the surface when inverter is operating. The inverter must be installed out of reach of children.

Risk of electric shock from energy stored in capacitors of the Inverter. Do not remove cover for 5 minutes after disconnecting all power sources (service technician only). Warranty may be voided if the cover is removed without unauthorized.

Notice For Use

The inverter has been constructed according to the applicable safety and technical guidelines. Use the inverter in installations that meet the following specifications only:

1. Permanent installation is required.
2. All components must remain within their permitted operating ranges and their installation requirements at all times.
3. The product must only be used in countries for which it is approved or released by Solis and the grid operator.
4. Use Solis products only in accordance with the information provided in the enclosed documentation and with the locally applicable laws, regulations, standards and directives. Any other application may cause personal injury or property damage.
5. This document does not replace any regional, state, provincial, federal or national laws, regulations or standards that apply to the installation, electrical safety and use of the product. Solis assumes no responsibility for the compliance or non-compliance with such laws or codes in connection with the installation of the product.
6. The electrical installation must meet all the applicable regulations and standards.
7. The inverter must be installed according to the instructions stated in this manual.
8. The inverter must be installed according to the correct technical specifications.
9. To startup the inverter, the Grid Supply Main Switch (AC) must be switched on, before the solar panel's DC isolator shall be switched on. To stop the inverter, the Grid Supply Main Switch (AC) must be switched off before the solar panel's DC isolator shall be switched off.

Overview

Front Panel Display

See Figure 3.1

LED Status Indicator Lights

Table 3.1 Status Indicator Lights
	Light	Status	Description
	POWER	ON	The inverter can detect DC power.
		OFF	No DC power or low DC power.
	OPERATION	ON	The inverter is operating properly.
		OFF	The inverter has stopped to supply power.
		FLASHING	The inverter is initializing.
	ALARM	ON	Alarm or fault condition is detected.
		OFF	The inverter is operating without fault or alarm.

Keypad

There are four keys in the front panel of the Inverter(from left to right): ESC, UP, DOWN and ENTER keys. The keypad is used for:

• Scrolling through the displayed options (the UP and DOWN keys);
• Access to modify the adjustable settings (the ESC and ENTER keys).

LCD

The two-line Liquid Crystal Display (LCD) is located on the front panel of the Inverter, which shows the following information:

• Inverter operation status and data;
• Alarm messages and fault indications.
• Service messages for operator;

Installation

Select a Location for the Unit

To select a location for the inverter, the following criteria should be considered:

Risk of fire
Despite careful construction, electrical devices can cause fires.

• Do not install the inverter in areas containing highly flammable materials or gases.
• Do not install the inverter in potentially explosive atmospheres.
• The mounting structure where the inverter is installed must be fireproof.

• Do not install in small closed spaces where air can not circulate freely. To avoid overheating, always make sure the flow of air around the inverter is not blocked. Refer to Figure 4.1
• Exposure to direct sunlight will increase the operational temperature of the inverter and may cause output power limiting. Recommends inverter installed to avoid direct sunlight or raining. Refer to Figure 4.1
• To avoid over heating ambient air temperature must be considered when choosing the inverter installation location. Recommends using a sun shade minimizing direct sunlight when the ambient air temperature around the unit exceeds 104°F/40°C. Refer to Figure 4.1
• Install on a wall or strong structure capable of bearing the weight.
• Install vertically with a maximum incline of +/- 5°.If the mounted inverter is tilted to an angle greater than the maximum noted, heat dissipation can be inhibited, and may result in less than expected output power.
• When 1 or more inverters are installed in one location, a minimum 12inchs clearance should be kept between each inverter or other object. The bottom of the inverter should be 20inchs clearance to the ground. See Figure 4.2
  
• Visibility of the LED status indicator lights and the LCD located at the front panel of the inverter should be considered.
• Adequate ventilation must be provided if the inverter is to be installed in a confined space.

NOTE:
Nothing should be stored on or placed against the inverter.

Mounting the Device

Dimensions of mounting bracket - see Figure 4.3

Please see Figure 4.4 and Figure 4.5 for instruction on mounting the inverter..
The inverter shall be mounted vertically. The steps to mount the inverter are listed below.

1. According to the figure 4.2, select the mounting height of the bracket and mark the mounting holes. For brick walls, the position of the holes should be suitable for the expansion bolts.
2. Make sure the bracket is horizontal. And the mounting holes (in Figure 4.4) are marked correctly. Drill the holes into wall at your marks.
   
3. Use the suitable expansion screws to fix the bracket on the wall.

The inverter must be mounted vertically.

4. Lift up the inverter (be careful to avoid body strain), and align the back bracket on the inverter with the convex section of the mounting bracket. Hang the inverter on the mounting bracket and make sure the inverter is secure (see Figure 4.5).
   
5. Use M4*9 screws in accessory to lock the inverter to the mount bracket.

Electrical Connections

Inverter designs quick-connect terminal, so top cover needn't open during electrical connection. The sign meaning located the bottom of inverter, as shown below in table 4.1.
All electrical connections are suit for the local or national standard.

Table 4.1 Electrical connection symbols
DC+	Positive DC input terminal
DC-	Negative DC input terminal
COM	RS485 communication port
GRID	Connecting terminal of the Grid

Connect PV side of the unit

The electrical connection of the inverter must follow the steps listed below:

1. Switch the Grid Supply Main Switch (AC) OFF.
2. Switch the DC Isolator OFF. (The DC isolator is installed between the PV panels and inverter, customer self-provided)
3. Assemble PV input connector to the Inverter.

Before connecting inverter, please make sure the PV array open circuit voltage is within the limit of the inverter.
Maximum 550Vdc for
S6-GR1P1K-M, S6-GR1P2K-M, S6-GR1P3K-M

Before connection, please make sure the polarity of the output voltage of PV array matches the "DC+" and "DC-" symbols. (See Figures 4.6-4.7)

Please don't connect PV array positive or negative pole to the ground, it could cause serious damages to the inverter.

Please use approved DC cable for PV system.

Cable type	Cross section (mm²)
	Range	Recommended value
Industry generic PV cable (model: PV1-F)	4.0~6.0 (12~10AWG)	4.0 (12AWG)

The steps to assemble the DC connectors are listed as follows:

1. Strip off the DC wire for about 7mm, Disassemble the connector cap nut. (see Figure 4.8)
   
2. Insert the wire into the connector cap nut and contact pin. (see Figure 4.9)
   
3. Crimp the contact pin to the wire using a proper wire crimper. (see Figure 4.10)
   
4. Insert the contact pin to the top part of the connector and screw up the cap nut to the top part of the connector.(see figure 4.11).
   
5. Then connect the DC connectors to the inverter. Small click will confirm connection. (see figure 4.12)
   

If DC inputs are accidently reversely connected or inverter is faulty or not working properly, it is NOT allowed to turn off the DC switch (installed between the PV panels and inverter, customer self-provided). Otherwise it may cause DC arc and damage the inverter or even lead to a fire disaster.
The correct actions are:
*Use a clip-on ammeter to measure the DC string current.
*If it is above 0.5A, please wait for the solar irradiance reduces until the current decreases to below 0.5A.
*Only after the current is below 0.5A, you are allowed to turn off the DC switches and disconnect the PV strings.
* In order to completely eliminate the possibility of failure, please disconnect the PV strings after turning off the DC switch (installed between the PV panels and inverter, customer self-provided) to aviod secondary failures due to continuous PV energy on the next day.
Please note that any damages due to wrong operations are not covered in the device warranty.

Connect grid side of the unit

For all AC connections, 2.5- 6mm² cable is required to be used. Please make sure the resistance of cable is lower than 1 ohm. If the wire is longer than 20m, it's recommended to use 6mm² cable.

There are "L","N","PE" symbols marked inside the connector, the Line wire of grid must be connected to L terminal, the Neutral wire of grid must be connected to "N" terminal and Earth wire must be connected to "PE".

Table 4.2 Grid cable size
Cable type	Cross section (mm²)
	Range	Recommended value
Industry generic grid cable	2.5~6.0	6.0

Each Solis S6 Mini Single Phase Inverter is supplied with an AC grid terminal connector. See Figures 4.13-4.14.

The steps to assemble the AC grid terminal connectors are listed as follows:

1. Disassemble the AC connector. Strip the AC wires about 7mm. See Figure 4.15
   
2. Fix the wires into the correct postion. Torque 0.8N.m Please try to pull out the wire to make sure the it's well connected. See Figure 4.16
   
3. Insert Seal and Clamp Finger into body, then tighten the nut, torque 2.5+/-0.5N·m. See Figure 4.17
   
4. Mating plug and socket:
   Push the locker onto the socket housing completely, then rotate the locker according to the direction instructed by the marks on the locker.(Warning: hold the body) See Figure 4.18
   

NOTE: Connection for Split phase grid.
When connect to 208/220/240V split phase, please connect L1 to "L" terminal, L2 to "N" terminal. Also connect earth to ground terminal.

External ground connection

See Figure 4.19
An external ground connection is provided at the right side of inverter.
Prepare OT terminals: M4. Use proper tooling to crimp the lug to the terminal.
Connect the OT terminal with ground cable to the right side of inverter. The torque is 2N.m.

Max over current protection device

To protect the inverter's AC grid connection conductors, Solis recommends installing breakers that will protect against overcurrent. The following table 4.3 defines OCPD ratings for the Solis S6 Mini Single Phase Inverters.

Table 4.3 Rating of grid OCPD
Inverter	Rated output voltage(V)	Rated output current (A)	Current for protection device (A)
S6-GR1P1K-M	220/230	4.5/4.3	10
S6-GR1P2K-M	220/230	9.1/8.7	16
S6-GR1P3K-M	220/230	13.6/13.0	20

Unit monitoring connection

The inverter can be monitored via Wi-Fi or GPRS. All Solis communication devices are optional (Figure 4.20). For connection instructions, please refer to the Solis Monitoring Device installation manuals.

Electrical connection diagram

Refer to figure 4.21, which is a simple guidance for installing a solar system with PV inverter.
A DC isolator is required to be installed in the system between PV panels and inverter.

1. The RCD should be in parallel connection between the consumers mains and the solar supply.
2. More than one RCD may be used. Each RCD can protect one or more circuits.

Start & Stop

Start the Device

To start up the Inverter, it is important that the following steps are strictly followed:

1. Switch the grid supply main Switch (AC) ON first.
2. Switch the DC swtich on(installed between the PV panels and inverter, customer self-provided). If the voltage of PV arrays are higher than start up voltage, the inverter will turn on. The red LED power will light.
3. When both the DC and the AC sides supply to the inverter, it will be ready to generate power. Initially, the inverter will check both its internal parameters and the parameters of the AC grid, to ensure that they are within the acceptable limits. At the same time, the green LED will flash and the LCD displays the information of INITIALIZING.
4. After 30-300 seconds (depending on local requirement), the inverter will start to generate power. The green LED will be on continually and the LCD displays GENERATING.

Do not touch the surface when the inverter is operating. It may be hot and cause burns.

Stop the Device

To stop the inverter, it is mandatory that the steps below are followed in the exact order outlined.

1. Select "Grid Off" in the Advanced Setting of Inverter LCD.
2. Turn off the AC Switch between Solis inverter and Grid.
3. Wait approximately 30 seconds (during this time, the AC side capacitors are dissipating energy). If the inverter has DC voltage above the start-up threshold, the red POWER LED will be lit. Switch the DC swtich off(installed between the PV panels and inverter, customer self-provided).
4. Confirm all LED's switch OFF (~one (1) minute).

Although the inverter is disconnected from the AC/DC power source and all the LED's are OFF, operators must wait five (5) minutes after the DC power source has been disconnected before opening the inverter cabinet. DC side capacitors can take up to five (5) minutes to dissipate all stored energy.

Operation

During normal operation, the display alternately shows the power and the operation status with each screen lasting for 10 seconds (see Figure 6.1). Screens can also be scrolled manually by pressing the UP and DOWN keys. Press the ENTER key to access to the Main Menu.

Main Menu

There are four submenus in the Main Menu (see Figure 6.1):

1. Information
2. Settings
3. Advanced Info.
4. Advanced Settings

Information

The Solis S6 Mini Single Phase Inverter main menu provides access to operational data and information. The information is displayed by selecting "Information" from the menu and then by scrolling up or down. See Table 6.1

Lock screen
Pressing the ESC key returns to the Main Menu. Pressing the ENTER key locks (Figure 6.2(a)) or unlocks (Figure 6.2 (b)) the screen.

Settings

The following submenus are displayed when the Settings menu is selected:

1. Set Time
2. Set Address

Set Time

This function allows time and date setting. When this function is selected, the LCD will display a screen as shown in Figure 6.3.
Press the UP/DOWN keys to set time and data. Press the ENTER key to move from one digit to the next (from left to right). Press the ESC key to save the settings and return to the previous menu.

Set Address

This function is used to set the address when muti inverters are connected to single monitor.
The address number can be assigned from "01"to "99".
The default address number of Solis S6 Mini Single Phase Inverter is "01".

Press the UP/DOWN keys to set the address (See Figure 6.4). Press the ENTER key to save the settings.
Press the ESC key to cancel the change and return to the previous menu.

Advanced Info

Technicians Only

NOTE:
To access to this area is for fully qualified and accredited technicians only. Enter menu "Advanced Info." and "Advanced settings" (need password).

Select "Advanced Info." from the Main Menu. The screen will require the password as above (Figure 6.5):

The default password is "0010".
Please press "down" to move the cursor, press "up" to select the number.

After enter the correct password the Main Menu will display a screen and be able to access to the following information.

1. Alarm Message
2. Running message
3. Version
4. Daily Energy
5. Monthly Energy
6. Yearly Energy
7. Daily Record
8. Communication Data
9. Warning Message

Alarm Message

The display shows the 100 latest alarm messages. Screens can be scrolled manually by pressing the UP/ DOWN keys. Press the ESC key to return to the previous menu. See Figure 6.6

Running Message

This function is for maintaince person to get running message such as internal temperature, Standard No.etc.
Screens can be scrolled manually by pressing the UP/DOWN keys.

Version

The screen shows the model version and the software version of the Inverter (see Figure 6.7)

Daily Energy

The function is for checking the energy generation for selected day.

Press DOWN key to move the cursor to day, month and year, press UP key to change the digit. Press Enter after the date is fixed. See Figure 6.8

Press UP/DOWN key to move one date from another. (See Figure 6.9)

Monthly Energy

The function is for checking the energy generation for selected month.

Press DOWN key to move the cursor to day and month, press UP key to change the digit. Press Enter after the date is fixed. See Figure 6.10

Press UP/DOWN key to move one date from another. (see Figure 6.11)

Yearly Energy

The function is for checking the energy generation for selected year.

Press DOWN key to move the cursor to day and year, press UP key to change the digit. Press Enter after the date is fixed. See Figure 6.12

Press UP/DOWN key to move one date from another. (see Figure 6.13)

Daily record

The screen shows history of changing settings. Only for maintance personel.

Communication Data

The screen shows the internal data of the Inverter (see Figure 6.14), which is for service technicians only.

Warning Message

The display shows the 100 latest warn messages (see Figure 6.15). Screens can be scrolled manually by pressing the UP/ DOWN keys. Press the ESC key to return to the previous menu.

Advanced Settings

Technicians Only

NOTE:
To access to this area is for fully qualified and accredited technicians only. Please follow "Advanced Info" to enter password to access this menu.

Select Advanced Settings from the Main Menu to access the following options:

1. Select Standard
2. Grid ON/OFF
3. Clear Energy
4. Reset Password
5. Power Control
6. Calibrate Energy
7. Special Settings
8. STD. Mode Settings
9. Restore Settings
10. HMI Update
11. Restart HMI
12. Debug Parameter
13. DSP Update
14. Power Parameter

Selecting Standard

This function is used to select the grid's reference standard (see Figure 6.16).

Press the UP/DOWN keys to select the standard (IEC61727, IEC61727L, User-Def, Custom50).

NOTE:
This function is for technicians use only.

NOTE:
For different countries, the grid standard needs to be set as different according to local requirements. If there is any doubt, please consult Solis service technicians for details.

Selecting the "User-Def" menu will access to the following submenu (see Figure 6.17),

NOTE:
The " User-Def" function can be only used by the service engineer and must be allowed by the local energy supplier.

Below is the setting range for "User-Def". (See Table 6.2)
Using this function, the limits can be changed manually.

Table 6.2 Setting ranges for User-Def (L-N)
OV-G-V1: 176---290V	OV-G-F1: 50.1-65Hz
OV-G-V1-T: 0.01---600S	OV-G-F1-T: 0.01---600S
OV-G-V2: 176---290V	OV-G-F2: 50.1-65Hz
OV-G-V2-T: 0.01---600S	OV-G-F2-T: 0.01---600S
UN-G-V1: 110---220V	UN-G-F1: 45-59.9Hz
UN-G-V1-T: 0.01---600S	UN-G-F1-T: 0.01---600S
UN-G-V2: 110---220V	UN-G-F2: 45-59.9Hz
UN-G-V2-T: 0.01---600S	UN-G-F2-T: 0.01---600S
Startup-T: 10-600S	Restore-T: 10-600S

Grid ON/OFF

This function is used to start up or stop the power generation of Solis Single Phase Inverter. See Figure 6.18
Screens can be scrolled manually by pressing the UP/DOWN keys. Press the ENTER key to save the setting. Press the ESC key to return to the previous menu.

Clear Energy

Clear Energy can reset the history yield of inverter.

These two functions are applicable by maintenance personnel only, wrong operation will prevent the inverter from working properly.

Reset Password

This function is used to set the new password for menu "Advanced info." and "Advanced information" (see Figure 6.19).
Enter the right password before set new password. Press the DOWN key to move the cursor,
Press the UP key to revise the value. Press the ENTER key to execute the setting.
Press the ESC key to return to the previous menu.

Power control

Active and reactive power can be set through power setting button.
There are 5 item for this sub menu:

1. Set output power
2. Set Reactive Power
3. Out_P With Restore
4. Rea_P With Restore
5. Select PF Curve

This function is applicable by maintenance personnel only, wrong operation will prevent the inverter from reaching maximum power.

Calibrate Energy

Maintenance or replacement could clear or cause a different value of total energy. Use this function could allow user to revise the value of total energy to the same value as before. If the monitoring website is used the data will be synchronous with this setting automatically.

Press the DOWN key to move the cursor, Press the UP key to revise the value. Press the ENTER key to execute the setting. Press the ESC key to return to the previous menu. See Figure 6.20

Special Settings

AFCI Set
Solis inverters have the built-in AFCI function which can detect the arc fault on the DC circuit and shut down the inverter to prevent a fire disaster.

1. Enable the AFCI function
   The AFCI function can be enabled in the following.
   Path:
   Advanced Setting -> Password: 0010 ->Special Settings -> AFCI Set -> AFCI ON/OFF -> ON (See Figure 6.21)
   

The "AFCI Level" is reserved for Solis technicians ONLY. Do not change the sensitivity otherwise it will lead to frequent false alarms or malfunctions. Solis is not responsible for any further damages caused by unauthorized modifications.

NOTE:
The setting corresponds to the current status as well which can be used to inspect the ON/OFF state of the AFCI function.

2. Arc Fault
   During the normal operation, if an DC arc is detected, the inverter will shut down and give out the following alarm (Figure 6.22):
   

Installer needs to thoroughly inspect the DC circuit to ensure all the cables are correctly fastened.
Once the DC circuit issue has been fixed or it is confirmed to be OK, press "ESC" for 3s and wait for the inverter to restart.

Discon Relay Set
The function is used to set the grid side relay state when the inverter AC output power is set to 0%. Select enable to disconnect the inverter from the grid, select disable to keep the inverter connected with the grid. See Figure 6.23

D-Wave Switch
When complex shading exits, double wave MPPT function may be used.
Turn on the D_Wave Switch, set the scan interval time(interval-T), save and send.
The inverter will carry out double wave MPPT scanning 1 time every scan interval time. See Figure 6.24

STD Mode settings

There are 5 setting under STD. Mode settings.

1. Working mode
2. Power Rate limit
3. Freq. Derate set
4. 10mins OV-G-V set.
5. Initial Settings

This function is applicable by maintenance personnel only, wrong operation will prevent the inverter from reaching maximum power.

Please follow below settings to enable the DRM. DRM default setting is "OFF", if DRM set "ON", but the logic interface un-connected to the switch or the switch is open, the inverter HMI will display "Limit by DRM" and the inverter output power will be limited to zero.

1. Select Initial Settings
2. Select DRM and set it "ON"

Restore Settings

Restore setting could set all item in STD Mode settings to default. The screen shows as below (Figure 6.25):

Press the Enter key to save the setting after setting grid off. Press the ESC key to return the previous mean.

HMI Update

This function is used for updating the LCD program.

This function is applicable by maintenance personnel only, wrong operation will prevent the inverter from reaching maximum power.

Restart HMI

The function is used for restart the HMI.

This function is applicable by maintenance personnel only, wrong operation will prevent the inverter from reaching maximum power.

Debug Parameter

This function is used for manufacturer maintenance personnel only.

DSP Update

The function is used for update the DSP.

This function is applicable by maintenance personnel only, wrong operation will prevent the inverter from reaching maximum power.

Power Parameter

This function is used for calibrate inverter output energy. It will not impact the energy count for inverter with RGM.
The screen shows (see Figure 6.26):

Press the Down key to move the cursor.
Press the Up key to change the digit.
Please press the Enter to save the setting and press the ESC key to return to the previous menu.

This setting is used for grid operator, don't change setting under this manual.

Maintenance

Solis S6 Mini Single Phase Inverter does not require any regular maintenance. However, cleaning the dust on heat-sink will help the inverter to dissipate the heat and increase its life time. The dust can be removed with a soft brush.

Do not touch the inverter's surface when it is operating. Some parts of the inverter may be hot and cause burns. Turn off the inverter (refer to "Stop the Device" section) and wait for a cool-down period before any maintenance or cleaning operation.

The LCD and the LED status indicator lights can be cleaned with a damp cloth if they are too dirty to be read.

NOTE:
Never use any solvents, abrasives or corrosive materials to clean the inverter.

Troubleshooting

The inverter is designed in accordance with the most important international grid-tied standards and safety and electromagnetic compatibility requirements. Before delivering to the customer, the inverter has been subjected to several tests to ensure its optimal operation and reliability.

In case of failure, the LCD screen will display an alarm message. In this case, the inverter may stop feeding into the grid. The failure descriptions and their corresponding alarm messages are listed in Table 8.1:

Table 8.1 Fault message and description
Alarm Message	Failure description	Solution
No power	Inverter no power on LCD	Check PV input connections Check DC input voltage (single phase >120V, three phase >350V) Check if PV+/- is reversed
LCD show initializing all the time	can not start-up	Check if the connector on main board or power board are fixed. Check if the DSP connector to power board are fixed.
OV-G-V01/02/03/04	Over grid voltage	Resistant of AC cable is too high. Change bigger size grid cable Adjust the protection limit if it's allowed by electrical company.
UN-G-V01/02	Under grid voltage	Use user define function to adjust the protection limit if it's allowed by electrical company.
OV-G-F01/02	Over grid frequency
UN-G-F01/02	Under grid frequency
Reverse-GRID	Wrong AC polarity	Check the polarity of AC connector.
Reverse-DC	Reverse DC polarity	Check the polarity of DC connector.
NO-GRID	No grid voltage	Check connections and grid switch. Check the grid voltage inside inverter terminal.
OV-DC01/02/03/04	Over DC voltage	Reduce the module number in series
OV-BUS	Over DC bus voltage	Check inverter inductor connection Check driver connection
UN-BUS01/02	Under DC bus voltage
GRID-INTF01/02	Grid interference	Restart inverter Change power board
OV-G-I	Over grid current
IGBT-OV-I	Over IGBT current
DC-INTF OV-DCA-I	DC input overcurrent	Restart inverter Identify and remove the string to the fault MPPT Change power board
IGFOL-F	Grid current tracking fail	Restart inverter or contact installer.
IG-AD	Grid current sampling fail
OV-TEM	Over Temperature	Check inverter surrounding ventilation. Check if there's sunshine direct on inverter in hot weather.
INI-FAULT	Initialization system fault	Restart inverter or contact installer.
DSP-B-FAULT	Comm. failure between main and slave DSP
12Power-FAULT	12V power supply fault
PV ISO-PRO 01/02	PV isolation protection	Remove all DC input, reconnect and restart inverter one by one. Identify which string cause the fault and check the isolation of the string.
ILeak-PRO 01/02/03/04	Leakage current protection	Check AC and DC connection Check inverter inside cable connection.
RelayChk-FAIL	Relay check fail	Restart inverter or contact installer.
DCinj-FAULT	High DC injection current	Restart inverter or contact installer.
Screen OFF with DC applied	Inverter internally damaged	Do not turn off the DC switches as it will damage the inverter. Please wait for the solar irradiance reduces and confirm the string current is less than 0.5A with a clip-on ammeter and then turn off the DC switches. Please note that any damages due to wrong operations are not covered in the device warranty.
AFCI-Check	AFCI-Check protection	Restart the inverter If it is still not resolved, contact the factory's customer service.
ARC-FAULT	Arc fault because of the PV side insulation damage	Check for arc in the inverter PV side connection and fix it. Restart the inverter. If it is still not resolved, contact the factory's customer service.

NOTE:
If the inverter displays any alarm message as listed in Table 8.1; please turn off the inverter (refer to "Stop the Device" section to stop your inverter) and wait for 5 minutes before restarting it (refer to "Start the Device" section to start your inverter). If the failure persists, please contact your local distributor or the service center.
Please keep ready with you the following information before contacting us.

1. Serial number of Solis Single Phase Inverter;
2. The distributor/dealer of Solis Single Phase Inverter (if available);
3. Installation date.
4. The description of problem (i.e. the alarm message displayed on the LCD and the status of the LED status indicator lights. Other readings obtained from the Information submenu (refer to "Information" section) will also be helpful.);
5. The PV array configuration (e.g. number of panels, capacity of panels, number of strings, etc.);
6. Your contact details.

Specifications

Model	S6-GR1P1K-M
Max. DC input voltage (Volts)	550
Rated DC voltage (Volts)	330
Startup voltage (Volts)	60
MPPT voltage range (Volts)	50...500
Max. input current (Amps)	14
Max short circuit input current (Amps)	22
MPPT number/Max input strings number	1/1
Rated output power (Watts)	1000
Max. output power (Watts)	1100
Max. apparent output power (VA)	1100
Rated grid voltage (Volts)	1/N/PE, 220/230
Rated output current (Amps)	4.5/4.3
Max. output current (Amps)	5.2
Power Factor (at rated output power)	>0.99 (0.8 leading - 0.8 lagging)
THDi (at rated output power)	<3%
Rated grid frequency (Hertz)	50/60
Operating frequency range (Hertz)	45-55/55-65
Max.efficiency	97.5%
EU efficiency	97.0%
Dimensions	310W*373H*160D (mm)
Weight	7.1kg
Topology	Transformerless
Self consumption (night)	< 1 W
Operating ambient temperature range	-25℃...+60℃
Relative humidity	0~100%
Ingress protection	IP66
Noise emission (typical)	<20 dBA
Cooling concept	Natural convection
Max.operation altitude	4000m
Grid connection standard	IEC 61683, IEC 60068, IEC 61727, IEC 62116, EN 50530, IS 16169 / IS 16221(BIS)
Safety/EMC standard	IEC/EN 62109-1/-2, IEC/EN 61000-6-1/-2/-3/-4
DC connection	MC4 connector
AC connection	Quick connection plug
Display	LCD, 2×20 Z.
Communication connections	RS485, Optional: Wi-Fi, GPRS
Warranty Terms	5 Years (Extend to 20 Years)
Model	S6-GR1P2K-M
Max. DC input voltage (Volts)	550
Rated DC voltage (Volts)	330
Startup voltage (Volts)	90
MPPT voltage range (Volts)	80...500
Max. input current (Amps)	14
Max short circuit input current (Amps)	22
MPPT number/Max input strings number	1/1
Rated output power (Watts)	2000
Max. output power (Watts)	2200
Max. apparent output power (VA)	2200
Rated grid voltage (Volts)	1/N/PE, 220/230
Rated output current (Amps)	9.1/8.7
Max. output current (Amps)	10.5
Power Factor (at rated output power)	>0.99 (0.8 leading - 0.8 lagging)
THDi (at rated output power)	<3%
Rated grid frequency (Hertz)	50/60
Operating frequency range (Hertz)	45-55/55-65
Max.efficiency	97.5%
EU efficiency	97.0%
Dimensions	310W*373H*160D (mm)
Weight	7.4kg
Topology	Transformerless
Self consumption (night)
Operating ambient temperature range	-25℃...+60℃
Relative humidity	0~100%
Ingress protection	IP66
Noise emission (typical)	<20 dBA
Cooling concept	Natural convection
Max.operation altitude	4000m
Grid connection standard	IEC 61683, IEC 60068, IEC 61727, IEC 62116, EN 50530, IS 16169 / IS 16221(BIS)
Safety/EMC standard	IEC/EN 62109-1/-2, IEC/EN 61000-6-1/-2/-3/-4
DC connection	MC4 connector
AC connection	Quick connection plug
Display	LCD, 2×20 Z.
Communication connections	RS485, Optional: Wi-Fi, GPRS
Warranty Terms	5 Years (Extend to 20 Years)
Model	S6-GR1P3K-M
Max. DC input voltage (Volts)	550
Rated DC voltage (Volts)	330
Startup voltage (Volts)	90
MPPT voltage range (Volts)	80...500
Max. input current (Amps)	14
Max short circuit input current (Amps)	22
MPPT number/Max input strings number	1/1
Rated output power (Watts)	3000
Max. output power (Watts)	3300
Max. apparent output power (VA)	3300
Rated grid voltage (Volts)	1/N/PE, 220/230
Rated output current (Amps)	13.6/13.0
Max. output current (Amps)	15.7
Power Factor (at rated output power)	>0.99 (0.8 leading - 0.8 lagging)
THDi (at rated output power)	<3%
Rated grid frequency (Hertz)	50/60
Operating frequency range (Hertz)	45-55/55-65
Max.efficiency	97.5%
EU efficiency	97.0%
Dimensions	310W*373H*160D (mm)
Weight	7.4kg
Topology	Transformerless
Self consumption (night)
Operating ambient temperature range	-25℃...+60℃
Relative humidity	0~100%
Ingress protection	IP66
Noise emission (typical)	<20 dBA
Cooling concept	Natural convection
Max.operation altitude	4000m
Grid connection standard	IEC 61683, IEC 60068, IEC 61727, IEC 62116, EN 50530, IS 16169 / IS 16221(BIS)
Safety/EMC standard	IEC/EN 62109-1/-2, IEC/EN 61000-6-1/-2/-3/-4
DC connection	MC4 connector
AC connection	Quick connection plug
Display	LCD, 2×20 Z.
Communication connections	RS485, Optional: Wi-Fi, GPRS
Warranty Terms	5 Years (Extend to 20 Years)

Ginlong Technologies Co., Ltd.
No. 57 Jintong Road, Binhai Industrial Park, Xiangshan, Ningbo, Zhejiang, 315712, P.R.China.
Tel: +86 (0)574 6578 1806
Fax: +86 (0)574 6578 1606
Email: info@ginlong.com
Web: www.ginlong.com

Please adhere to the actual products in case of any discrepancies in this user manual.
If you encounter any problem on the inverter, please find out the inverter S/N and contact us, we will try to respond to your question ASAP.

Documents / Resources

References

• 光伏逆变器_太阳能并网逆变器-锦浪科技股份有限公司

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