SOLIS 4G series User manual

User Manual
for 4G Series Grid Inverter
Version 1.0, Release Date: 09,2022
Applicable models
Solis-1P2.5K-4G-US
Solis-1P3K-4G-US
Solis-1P3.6K-4G-US
Solis-1P3.8K-4G-US
Solis-1P4K-4G-US
Solis-1P4.6K-4G-US
Solis-1P5K-4G-US
Solis-1P6K2-4G-US
Applicable System
Single phase system

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1.1 Product Description
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1. Introduction
1.2 Packaging
2. Safety & Warning
2.1 Safety Symbols
2.2 General Safety Instructions
3. Overview
3.1 Front Panel Display
3.2 LED Status Indicator Lights
4. Installation
4.1 Select a Location for the Inverter
4.2 Mounting the Inverter
4.3 Electrical Connections
4.3.1 Terminal Connections
Contents
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2.3 Notice For Use 6
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1.3 Storage
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3.3 Keypad
3.4 LCD
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4.3.2 Connect PV Side of Inverter ……………………………………………………………………………………
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4.3.3 Connect Grid Side of Inverter …………………………………………………………………………………
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4.3.4 Ground Connection …………………………………………………………………………………………………
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4.3.5 Max. Overcurrent Protection Device (OCPD) ………………………………………………
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4.3.6 Inverter Monitoring Connection ………………………………………………………………………………
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4.3.7 Module Level Rapid Shutdown (Optional) …………………………………………………………
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4.3.8 Meter Connection(optional) ……………………………………………………………………………………
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5. Start & Stop
5.1 Start-up procedure
5.2 Shutdown procedure
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6. Operation
6.1 Main Menu
6.2 Information
6.2.1 Lock Screen
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6.3 Settings
6.3.1 Set Time …………………………………………………………………………………………………………………………
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6.3.2 Set Address ……………………………………………………………………………………………………………………

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Contents
6.4 Advanced Info.
6.4.1 Alarm Message
6.4.3 Version
6.4.4 Daily Energy
6.4.5 Monthly Energy
6.4.2 Running Message
6.4.7 Daily Records
6.4.8 Communication Data
6.4.9 Warning Message
6.4.6 Yearly Energy
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6.5.4 Reset Password
6.5.6 Calibrate Energy
6.5.8 STD.Mode Settings
6.5.9 Restore Settings
6.5.12 Export Power Set
6.5.14 Debug Parameter
6.5.16 Compensation Set
6.5.11 Internal EPM Set
6.5.13 Restart HMI
6.5.15 DSP Update
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6.6 Advanced Settings
8. Troubleshooting ……………………………………………………………………………………………………………… 51
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9. Maintenance
7. Maintenance ……………………………………………………………………………………………………………………… 50
6.5 Advanced Settings
6.5.1 Select Standard
6.5.2 Grid ON/OFF
6.5.3 Clear Energy
6.5.5 Power Control
6.5.7 Special Setting
6.5.10 HMI Update

1. Introduction
1.1 Product Description
Solis single phase US series inverters can transfer DC power from PV panels into AC
power and feed into the grid.
Solis single phase US series inverters contain 8 models which are listed below:
Solis-1P2.5K-4G-US, Solis-1P3K-4G-US, Solis-1P3.6K-4G-US, Solis-1P3.8K-4G-US,
Solis-1P4K-4G-US, Solis-1P4.6K-4G-US,Solis-1P5K-4G-US, Solis-1P6K2-4G-US
Figure1.1 Front side view(Left) and Bottom side view(Right)
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DC Input AC GridMeter
Wiring box
LCD display
4 buttons
LED lights
RS485 DC Swtich
User Manual

1.2 Packaging
When you receive the inverter, ensure that all the parts listed below are included:
Manual
Inverter x1
Mounting bracket x1 Expansion screws x3
Locking screws x2 Manual x1
1.3 Storage
● Use the original box to repackage the inverter, seal with adhesive tape with the desiccant inside
the box.
● Store the inverter in a clean and dry place, free of dust and dirt. The storage temperature must be
between 40~176°F and humidity should be between 0 to 95%, non-condensing.
● Do not stack more than four (4) inverters high on a single pallet.
● Keep the box(es) away from corrosive materials to avoid damage to the inverter enclosure.
● Inspect the packaging regularly. If packing is damaged (wet, pest damages, etc.), repackage the
inverter immediately.
● Store inverters on a flat, hard surface -- not inclined or upside down.
● After 100 days of storage, the inverter and carton must be inspected for physical damage before
installing. If stored for more than 1 year, the inverter needs to be fully examined and tested by
qualified service or electrical personnel before using.
● Restarting after a long period of non-use requires the equipment be inspected and, in some cases,
the removal of oxidation and dust that has settled inside the equipment will be required.
If the inverter is not installed immediately, storage instructions and environmental conditions are below:
1. Introduction User Manual
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2. Safety & Warning
2.1 Safety Symbols
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.
NOTE:
NOTE symbol indicates important safety instructions, which if not correctly
followed, could result in some damage or the destruction of the inverter.
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.
2.2 General Safety Instructions
WARNING:
Electrical installations must be done in accordance with the local and national
electrical safety standards.
WARNING:
Do not connect PV array positive(+) or negative(-) to ground, it may
cause serious damage to the inverter.
WARNING:
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 disconnects that comply
with the NEC Article 690, Part II. All Solis single phase inverters feature an
integrated DC switch.
User Manual
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2.3 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. The electrical installation must meet all the applicable regulations and standards.
3. The inverter must be installed according to the instructions stated in this manual.
4. The inverter must be installed according to the correct technical specifications.
5. 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.
CAUTION:
The PV array (solar panels) supplies a DC voltage when they are exposed to
sunlight.
CAUTION:
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 .
CAUTION:
The surface temperature of the inverter can reach up to 75℃ (167 F).
To avoid risk of burns, do not touch the surface of the inverter while it’s operating.
Inverter must be installed out of the reach of children.
CAUTION:
Risk of electric shock. Do not remove cover. There is no user serviceable
parts inside. Refer servicing to qualified and accredited service technicians.
2. Safety & Warning User Manual
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3.1 Front Panel Display
3.2 LED Status Indicator Lights
There are three LED status indicator lights in the front panel of the inverter. Left LED:
POWER LED (red) indicates the power status of the inverter. Middle LED: OPERATION
LED (green) indicates the operation status. Right LED: ALARM LED (yellow) indicates
the alarm status. Please see Table 3.1 for details
Description
The inverter detects DC power.
No DC power or low DC power.
The inverter is operating properly.
The inverter has stopped to supply power.
The inverter is initializing.
Alarm or fault condition is detected.
No fault or alarm is detected.
Status
ON
OFF
ON
OFF
OFF
ON
FLASHING
Light
POWER
OPERATION
ALARM
Table 3.1 Status Indicator Lights
Figure 3.1 Front Panel Display
3. Overview User Manual
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3.3 Keypad
3.4 LCD
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).
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;
Service messages for operator;
Alarm messages and fault indications.
3. Overview User Manual
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To select a location for the inverter, the following criteria should be considered:
To avoid over heating ambient air temperature must be considered when choosing
the inverter installation location. Ginlong recommends using a sun shade minimizing
direct sunlight when the ambient air temperature around the unit exceeds 104°F/40°C.
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.
Exposure to direct sunlight will increase the operational temperature of the inverter
and may cause output power limiting. Ginlong recommends inverter installed to avoid
direct sunlight or raining.
WARNING: 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.
Figure 4.1 Recommended installation position
4. Installation
4.1 Select a Location for the Inverter
User Manual
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