SOLIS S6, S6-GR1P(7-10)K03-NV-ND - Inverter Manual

Introduction

Product Description

Solis S6 Single Phase Inverters integrate DRM and backflow power control function, that could suitable for smart grid requirement.

This manual covers the S6 Single Phase Inverter model listed below:
S6-GR1P7K03-NV-ND, S6-GR1P8K03-NV-ND, S6-GR1P9K03-NV-ND, S6-GR1P10K03-NV-ND

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.

Overview

Front Panel Display

There are four indicators on the Solis S6-GR1P(2.5-6)K-S Series Inverter(Power, COM, CT/Meter and Bluetooth) which indicate the working status of the inverter.

NOTE:

NOTE:
Long press the Power button for 5 seconds to reset the bluetooth connection passwords. If the reset is successful, the Power button will be flashing in Blue color and in 0.5s interval for 3s. If the reset is failed, the Power button will be flashing in Yellow color and in 0.5s interval for 3s.

Select a Location for the Inverter

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.

• 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 12 inches clearance should be kept between each inverter or other object. The bottom of the inverter should be 20 inches clearance to the ground
  
• 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 Inverter

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.
   
   
   The inverter must be mounted vertically.
2. 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).
   

Electrical Connections

Connect PV side of inverter

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.
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-GR1P7K03-NV-ND, S6-GR1P8K03-NV-ND,
S6-GR1P9K03-NV-ND, S6-GR1P10K03-NV-ND

Before connection, please make sure the polarity of the output voltage of PV array matches the"DC+"and"DC-"symbols.

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

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 wirecrimper. (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 as it will damage the inverter and even leads 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.

Please note that any damages due to wrong operations are not covered in the device warranty.

AC output connections

It is recommended to use 6-16mm2 outdoor cables with a crimp terminal range of 6-10mm2.

Installation steps are shown as below:

1. Strip the end of the AC cable insulation sleeve about 55mm then strip a short bit (S2) on the end of each wire.
   
   NOTE:
   S2 (the length to strip the wire is about 8mm) which is 2-3mm longer than S1.
2. Insert the stripped cable into the crimping area of the OT terminal then use crimping tool to crimp the cable terminal.

The terminal part must be insulated with heat shrink tubing or insulating tape.

NOTE:
If aluminum cables are used, please use copper and aluminum terminals to avoid direct contact between the copper bar and the aluminum cables. (the copper and aluminum adapters are configured according to the selected cable)

3. Dissemble the 4 screws on the AC terminal cover and take out the cover.
   
4. Insert the cable through cap nut, tubing and AC terminal, Insert the 3 cables into AC terminal and use the slotted screwdriver to tighten the screws with torque of 2-3Nm.
   

When assembling the AC terminal, be careful not to cut the insulation layer of the wire, or it might lead to poor contact.

5. Push the AC terminal along the rail to the inside of the inverter then tighten the screws.
   Lock the 4 screws of the AC terminal then tighten the cap nut.

External ground connection

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 20 in-lbs (2N.m).

Max. over current protection device (OCPD)

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

Inverter monitoring connection

The inverter can be monitored via Wi-Fi or GPRS. All Solis communication devices are optional (Figure 4.21). For connection instructions, please refer to the Solis Monitoring Device installation manuals.

Electrical connection diagram

Refer to figure 4.22, 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 with 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.

Meter Connection(optional)

The inverter can work with a single phase smart meter to achieve Export Power Management function and/or 24hour consumption monitoring function.

NOTE:
To achieve Export Power Management function, the smart meter can be installed on either grid side or load side. To achieve 24hour consumption monitoring function, the smart meter can only be installed on grid side.

Two types of meters are supported:
Direct Insert Type Meter - Max input current 60A (Model: DDSD1352-C)
External CT Type Meter - 120A/40mA CT is supplied (Model: ACR10RD16TE)
Customer can place the order for a suitable meter from Solis Sales Reps.

Below are the connection diagrams of different meters connecting to different locations.

CT connections(optional)

The inverter can work with a smart sensor to achieve Export Power Management function.

NOTE:
Inverters are classified as "Meter Model" and "CT Model" due to hardware difference.
Meter Model can only connect a smart meter.
CT Model can only connect a smart sensor.
Please consult Solis Sales Rep before placing the order.

NOTE:
To achieve Export Power Management function, the smart sensor must be installed on the grid side.

Below is the connection diagram of the smart sensor.

Logic interface connection

Logic interface is required by some local regulations that can be operated by a simple switch or contactor (Not available in South Africa).

When the switch is closed the inverter can operated normally. When the switch is opened, the inverter will reduce it's output power to zero within 5s.

Pin5 and Pin6 of RJ45 terminal is used for the logic interface connection.

Please follow below steps to assemble RJ45 connector.

1. Insert the network cable into the communication connection terminal of RJ45.
   
2. Use the network wire stripper to strip the insulation layer of the communication cable.
   According to the standard line sequence of figure 4.26 connect the wire to the plug of RJ45, and then use a network cable crimping tool to make it tight.
   
3. Connect RJ45 to DRM (logic interface).

Commissioning

Preparation

• Ensure all the devices are accessible for operation, maintenance and service.
• Check and confirm that the inverter is firmly installed.
• Space for ventilation is sufficient for one inverter or multiple inverters.
• Nothing is left on the top of the inverter.
• Inverter and accessories are correctly connected.
• Cables are routed in safe place or protected against mechanical damage.
• Warning signs and labels are suitably affixed and durable.
• An Android or IOS mobile phone with Bluetooth function is available.
• Measure DC voltage of PV strings and ensure the polarity is correct.
• Measure AC voltage and frequency and ensure they are within local standard.
  

APP Download

Users need to download the APP before installing it for the first time.

There are three ways to download and install the latest APP:

1. You can visitwww.soliscloud.com to download the latest version APP.
2. You can search "Soliscloud" in Google Play or App Store.
   
   
3. You can scan this QR code below to download "Soliscloud".

Local Connection via APP

Step 1: Rotate the inverter DC switch from OFF to ON.

Step 2: APP Bluetooth connection with inverter.

Turn on Bluetooth switch on your mobile phone and then open the Soliscloud APP. Click "More Tools"->"Local Operation"->"Connect with Bluetooth"

Select the Bluetooth signal from the inverter. (Bluetooth Name: INV-Inverter SN)

Step 3: Login account.
If you are the installer, please select the account type as Installer. If you are the plant owner, please select the account type as owner. Then set your own initial password for control verification. (The first log-in must be finished by installer in order to do the initial set up)

Step 4: Grid Code Setting.
Select "Settings->Grid Parameter Setting->Grid Code Setting->Grid Code", choose the applicant standard according to the installation and save.

The specific parameters can be set at Grid Code Setting page.

Mention that the grid parameters modification should be permissible by utility grid company or the power distribution supplier.

Step 5: Turn on the AC switch between the inverter and Grid, wait till the inverter start generating.

Stop the Inverter

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

1. Select "Power OFF" in the APP.
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 switch OFF.
4. Confirm all LED's switch OFF (~one (1) minute).

Although the inverter DC disconnect switch is in the OFF position 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.

Bluetooth communication parameters are as follow:

1. RF operating frequency range: 2402~2480MHz (BLE, TX/RX)
2. Maximum e.i.r.p.: 7.22dBm

The APP interface contains 4 sections:

1. Home
2. Info
3. Alarm
4. Settings

Home Page

The home page contains the power and energy data of the inverter.

The PV data and AC data are also available under this section.

Info Page

Info page displays the general information of the inverter such as inverter serial number, firmware version, grid code, etc.

Alarm Page

Alarm page contains the alarm code of the inverter and its corresponding troubleshooting methods.

Setting Page

Setting page contains all the setting options of the inverter.

NOTE:
The inverter is by default setting with grid code which complies with local requirements. If there is need to modify the protection limits, please consult and approve by your local grid operator.

Start up and Stop the inverter

1. Select "Settings -> Power ON" to start up the inverter.
2. Select "Settings -> Power OFF" to stop the inverter.

Inverter Setting

Inverter Function Setting

1. AFCI Setting

2. 24-Hour Load Monitoring
   Turn on this switch to enable 24-Hour Load Monitoring function. Please refer to 6.4.4.1 Built-in EPM Setting for details.
3. MPPT Multi-peak Scanning Setting

4. Logical Interface Setup

Inverter Parameter Setting

Inverter Power Setting

Grid Parameter Setting

See Local Connection via APP Chapter for details.

EPM Setting

Built-in EPM is for PV plant with only 1 inverter, while External EPM for multiple inverters.

Built-in EPM Setting

Select "Settings -> EPM Setting -> Built-in EPM Setting" to make the settings.

The Built-in EPM includes 2 functions related to the smart meter or smart sensor.

NOTE:
Function 1: Export Power Management Function

1. Inverters can work with a smart meter OR a smart sensor to dynamically limit the export power of the system.
2. Zero injection can be achieved.
3. Smart meter can be installed either on the grid side OR the load side.
   Smart sensor can only be installed on the grid side.

Function 2: 24-Hour Load Monitoring Function

1. Only applicable if Solis monitoring system is used.
2. Inverters can work with a smart meter OR smart sensor to monitor the load consumption data for the whole day and the data will be displayed on the Solis monitoring system.
3. Smart meter or smart sensor can only be installed on the grid side.

NOTE:
Please refer to below instructions for different user scenarios.

Scenario 1. Only Function 1 is required Using a Smart Meter:
Step 1: Refer to Meter Connection Section to connect the smart meter on the grid side or load side.

Step 2: Select the corresponding meter model in the Meter Selection.

Step 3: Choose Meter in Grid Mode or Meter in Load Mode in the Built-in EPM mode selection accordingly.

Step 4: Configure the System Export Power Limit Value to set the allowed backflow power.

Step 5: Configure the Built-in EPM Failsafe Switch to enable the failsafe function (If necessary).

Using a Smart Sensor:
Step 1: Refer to CT connections Section to connect the smart sensor on the grid side.

Step 2: Select the CT Sensor Mode in the Built-in EPM mode selection.

Step 3: Configure the CT Ratio and CT Direction at the "Settings -> EPM Setting -> CT Setting". (If necessary).

Step 4: Configure the System Export Power Limit Value to set the allowed backflow power.

Step 5: Configure the Built-in EPM Failsafe Switch to enable the failsafe function (If necessary).

NOTE:
Please refer to below instructions for different user scenarios.

Scenario 2. Only Function 2 is required Using a Smart Meter:
Step 1: Refer to Meter Connection Section to connect the smart meter on the grid side or load side.

Step 2: Select the corresponding meter model in the Meter Selection.

Step 3: Choose Meter 24-Hour Monitoring Mode in the Built-in EPM mode selection accordingly.

Step 4: Enable the 24-Hour Load Monitoring function at "Settings -> Inverter Setting -> Inverter Function Setting".

Using a Smart Sensor:
Step 1: Refer to CT connections Section to connect the smart sensor on the grid side.

Step 2: Select the CT load Monitoring Mode in the Built-in EPM mode selection.

Step 3: Configure the CT Ratio and CT Direction at the "Settings -> EPM Setting -> CT Setting". (If necessary).

Step 4: Enable the 24-Hour Load Monitoring function at "Settings -> Inverter Setting -> Inverter Function Setting".

NOTE:
Please refer to below instructions for different user scenarios.

Scenario 3. Both Function 1 and 2 are required Using a Smart Meter:
Step 1: Refer to Meter Connection Section to connect the smart meter on the grid side or load side.

Step 2: Select the corresponding meter model in the Meter Selection. Step 3: Choose Meter in Grid Mode or Meter in Load Mode in the Built-in EPM mode selection accordingly.

Step 4: Configure the System Export Power Limit Value to set the allowed backflow power.

Step 5: Configure the Built-in EPM Failsafe Switch to enable the failsafe function (If necessary).

Step 6: Enable the 24-Hour Load Monitoring function at "Settings -> Inverter Setting -> Inverter Function Setting".

Using a Smart Sensor:
Step 1: Refer to CT connections Section to connect the smart sensor on the grid side.

Step 2: Select the CT Sensor Mode in the Built-in EPM mode selection.

Step 3: Configure the CT Ratio and CT Direction at the "Settings -> EPM Setting -> CT Setting". (If necessary).

Step 4: Configure the System Export Power Limit Value to set the allowed backflow power.

Step 5: Configure the Built-in EPM Failsafe Switch to enable the failsafe function (If necessary).

Step 6: Enable the 24-Hour Load Monitoring function at "Settings -> Inverter Setting -> Inverter Function Setting".

There are 6 modes for Built-in EPM.

1. EPM ALL OFF. Built-in EPM function is disabled.
2. CT Sensor Mode. Solis Smart Sensor is connected in the grid connection point (The System Export Power Limit Value setting is applicable, default value is 0W).
3. Meter in Grid Mode. Solis Smart Meter is connected in the grid connection point (The System Export Power Limit Value setting is applicable, default value is 0W).
4. Meter in Load Mode. Solis Smart Meter is connected in the load branch circuit (The System Export Power Limit Value setting is applicable, default value is 0W).
5. Meter 24-Hour Monitoring Mode. Solis Smart Meter is connected in the grid connection point(used for 24h load monitoring only, the System Export Power Limit Value setting is not applicable).
6. CT load Monitoring Mode. Solis Smart Sensor is connected in the grid connection point (used for 24h load monitoring only, the System Export Power Limit Value setting is not applicable).

External EPM Setting

Select "Settings -> EPM Setting -> External EPM Setting".

External EPM Failsafe Swtich should be turned ON when external EPM device is used.

Inverter Work Mode Setting

Select "Settings -> Inverter Work Mode Setting".

1. No response mode
   Use this switch to close all response mode.
2. Volt-watt Mode
   The volt-watt mode varies the active power output level of the inverter in response to the voltage at its grid-interactive port.
3. Volt-var Mode
   The volt-var mode varies the reactive power absorbed or supplied by the inverter in response to the voltage at its grid-interactive port.
4. Fixed power factor Mode
   The fixed power factor mode is for control of power factor over the range of inverter output.
5. Fixed reactive power Mode
   The fixed reactive power mode is for control of reactive power over the range of inverter output.
6. Power-PF Mode
   The Power-PF mode varies the active power output level of the inverter in response to its power factor.

Maintenance

Solis S6 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 and wait for a cool-down period before any maintenance or cleaning operation.

The Screen and the LED status indicator lights can be cleaned with 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 APP 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

NOTE:
If the inverter displays any alarm message as listed in Table 8.1; please turn off the inverter and wait for 5 minutes before restarting it.
If the failure persists, please contact your local distributor or the service center.

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 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

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.