SOLIS S6 Series User manual

User Manual
for S6 Series Hybrid Inverter
Version 1.0, Release Date: 10,2022
Applicable models
S6-EH3P3K-H-EU
S6-EH3P4K-H-EU
S6-EH3P5K-H-EU
S6-EH3P6K-H-EU
S6-EH3P8K-H-EU
S6-EH3P10K-H-EU
Applicable System
Single phase system

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02
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1.1 Product Description
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1. Introduction
1.2 Packaging
2. Safety & Warning
2.1 Safety
2.2 General Safety Instructions
3. Overview
3.1 Intelligent LED Indicators
4.9 Inverter Remote Monitoring Connection
4. Installation
4.1 Select a Location for the Inverter
4.2 Mounting the Inverter
4.4 PV Input Cable Installation
4.6 AC Cable Installation
4.7 Communication Cable Installation
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2.3 Notice For Use 06
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4.5 Battery Power Cable Installation ……………………………………………………………………………………
26
4.8 Meter Installation ……………………………………………………………………………………………………………………
30
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5. Commissioning & Shutdown
7. Troubleshooting ………………………………………………………………………………………………………………… 35
40
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8. Specifications
34
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6. Maintenance
11
4.3 PE Cable Installation …………………………………………………………………………………………………………
30
5.1 Preparation of Commissioning ………………………………………………………………………………………
30
5.2 Commissioning Procedure ………………………………………………………………………………………………
33
5.3 Shutdown procedure …………………………………………………………………………………………………………
Contents
2.4 Notice for Disposal 06
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1. Introduction
2
User Manual
1.1 Product Description
The Solis S6 Series is designed for residential hybrid systems, which can work with
batteries to optimize self-consumption. The unit can operate in both off- and on-grid
modes.
This manual covers the Solis S6 Series inverter model listed below:
S6-EH3P5K-H-EU, S6-EH3P6K-H-EU, S6-EH3P8K-H-EU, S6-EH3P10K-H-EU
The following two models are exclusively for the Polish market:
S6-EH3P3K-H-EU, S6-EH3P4K-H-EU
Figure 1.1
Front side view
Figure 1.2
Bottom side view
DCSwitch
AC Grid Port
AC Backup Port
Data Logging
Stick (Optional)
AntennaPV Input
Battery Input
AC- GRI DAC- BAC KUP
ANT ENN A
COM
PV1 PV2 PV3 P V4 BAT
DCSwitch
Communication

1. Introduction User Manual
3
1.2 Packaging
Please ensure that the following items are included in the packaging with your machine:
Inverter x1 Back Plate x1
AC Backup x1
Fixing Screws(M4*12) x4
Dust Cover x1
CT x3
Eastron Meter x1
Meter cable x1
If anything is missing, please contact your local Solis distributor.
User Manual x1
Manual
Bluetooth Antenna x1
RJ45 connector x6
WiFi/LAN/4G Stick x1(optional)
AC Grid x1 CAN cable x1
Battery cable x1
PV Connector x4

2. Safety & Warning User Manual
4
2.1 Safety
The following types of safety instructions and general information appear in this document as
described below:
CAUTION:
“Caution” indicates a hazardous situation which if not avoided, could result
in minor or moderate injury.
WARNING:
“Warning” indicates a hazardous situation which if not avoided, could result
in death or serious injury.
DANGER:
“Danger” indicates a hazardous situation which if not avoided, will result in
death or serious injury.
NOTE:
“Note” provides tips that are valuable for the optimal operation of your
product.
2.2 General Safety Instructions
WARNING:
Electrical installations must be done in accordance with the local and national
electrical safety standards.
WARNING:
Please don’t connect PV array positive (+) or negative (-) to ground, it could
cause serious damage to the inverter.
WARNING:
Only devices in compliance with SELV (EN 69050) may be connected to the
RS485 and USB interfaces.
WARNING:
Do not touch any inner live parts until 5 minutes after disconnection
from the utility grid and the PV input.
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.

2. Safety & Warning User Manual
5
CAUTION:
The PV array supplies a DC voltage when they are exposed to sunlight.
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.
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 that comply with isolators
the NEC Article 690, Part II.
All Solis single phase inverters feature an integrated DC switch.
CAUTION:
Risk of electric shock, do not remove cover. There is no user serviceable
parts inside, refer servicing to qualified and accredited service technicians.
NOTE:
PV module used with inverter must have an IEC 61730 Class A rating.
WARNING:
Operations below must be accomplished by licensed technician or
Solis authorized person.
WARNING:
Operator must put on the technicians’ gloves during the whole process
in case of any electrical hazards.
WARNING:
AC BACKUP Port of S6 Series is not allowed to connect to the grid.
WARNING:
Please refer to the specification of the battery before configuration.

2. Safety & Warning User Manual
6
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.
2.4 Notice for Disposal
This product shall not be disposed of with household waste.
They should be segregated and brought to an appropriate collection
point to enable recycling and avoid potential impacts on the environment
and human health.
Local rules in waste management shall be respected .

User Manual
3. Overview
7
3.1 Intelligent LED Indicators
There are five indicators on the Inverter (Battery, Power, The Solis S6-EH3P(3-10)K-H-EU Series
WiFi, Ethernet and Bluetooth) which indicate the working status of the inverter.
The Bluetooth Antenna or WiFi datalogger shall be installed at the Antenna/COM port of the hybrid
inverter before local debugging.
Battery
Power
WiFi
Bluetooth
RS485
NOTE:
Battery/WiFi/Ethernet/Bluetooth indicators will automatically turn off after
1 minute. The Power indicator will remain on with lower brightness. Short
press the Power indicator can wake up all indicators.
Light Status Description
Blue
Flashing every 3s
Blue
Flashing every 1.5s
Blue
Solid ON
Yellow
Solid ON
Blue
Solid ON
Yellow
Solid ON
Red
Solid ON
OFF
OFF
OFF
Battery discharging.
Battery charging.
Idle.
Battery Warning.
Normally Operating.
Warning.
Alarm.
COM Port is using.
RS485 Port is using.
Bluetooth Port is using.
COM Port is not used.
RS485 Port is not used.
Bluetooth Port is not used.
Blue
Solid ON
Blue
Solid ON
Blue
Solid ON
Power
WiFi
RS485
Bluetooth
Battery

User Manual
8
4.1 Select a Location for the Inverter
Figure 4.1 Recommended Installation locations
To select a location for the inverter, the following criteria should be considered:
Exposure to direct sunlight may cause output power derating. It is recommended to
avoid installing the inverter in direct sunlight.
It is recommended that the inverter is installed in a cooler ambient which doesn't
exceed 104℉/40℃.
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.
The mounting structure where the inverter is installed must be fireproof.
4. Installation

User Manual
4. Installation
9
To avoid overheating, always make sure the flow of air around the inverter is not
blocked. A minimum clearance of 500mm should be kept between inverters or
objects and 500mm clearance between the bottom of the machine and the ground.
Adequate ventilation must be provided.
NOTE:
Nothing should be stored on or placed against the inverter.
Install vertically with a maximum incline of +/- 5 degrees, exceeding this may cause
output power derating.
Figure 4.2 Inverter Mounting clearance
Install on a wall or strong structure capable of bearing the weight of the machine (24kg).
≥1000mm
≥500mm
≥1000mm
≥500mm ≥500mm

User Manual
4. Installation
10
4.2 Mounting the Inverter
The inverter shall be mounted vertically.
The steps to mount the inverter are listed below:
1. 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.
WARNING:
The inverter must be mounted vertically.
Once a suitable location has be found accordingly to 4.1 using figure 4.3 mount the wall
bracket to the wall.
Dimensions of mounting bracket:
Figure 4.3 Inverter wall mounting
515
170
unit:mm
Figure 4.4 Wall Mount Bracket
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 4.4)

User Manual
4. Installation
11
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.
4.3 PE Cable Installation
Figure 4.5 Connect the external grounding conductor
Grounding screw
Grounding screw

User Manual
4. Installation
12
4.4 PV Input Cable Installation
Negative terminal
Positive terminal
Before connecting inverter, please make sure the PV array open circuit
voltage is within the limit of the inverter.
Before connection, please make sure the polarity of the output voltage of
PV array matches the“DC+”and“DC-”symbols.
Please use approved DC cable for PV system.
4.0~6.0 4.0（12AWG）
(12~10AWG)
Cable type
Cross section（mm²）
Range
Industry generic PV cable
Recommended value
1. Select a suitable DC cable and strip the wires out by 7±0.5mm. Please refer to the table
below for specific specifications.
7±0.5mm
2. Take the DC terminal out of the accessory bag, turn the screw cap to disassemble it,
and take out the waterproof rubber ring.
Nut Waterproof collar
Figure 4.6
Figure 4.7

User Manual
4. Installation
13
Negative terminal
Positive terminal
3. Pass the stripped DC cable through the nut and waterproof rubber ring.
4. Connect the wire part of the DC cable to the metal DC terminal and crimp it with a special
DC terminal crimping tool.
Negative terminal
Positive terminal
Squeeze
5. Insert the crimped DC cable into the DC terminal firmly, then insert the waterproof rubber
ring into the DC terminal and tighten the nut.
Tighten
After you hear a "click", pull gently to check for a firm engagement.
Click
Negative terminal
Positive terminal
Figure 4.8
Figure 4.9
Figure 4.10

User Manual
4. Installation
14
6. Measure PV voltage of DC input with multimeter, verify DC input cable polarity.
7. Connect the wired DC terminal to the inverter as shown in the figure, and a slight
"click" is heard to prove the connection is correct.
+
-
CAUTION:
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. 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 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.
Figure 4.11
Figure 4.12
Click

User Manual
4. Installation
15
4.5 Battery Power Cable Installation
1. Take out the two pre-made battery power cables from the package.
Cable length: 1 meter.
Cross section area is 8mm².
Figure 4.13
2. Connect the battery ends to the battery module positive and negative terminals.
3. Measure DC voltage of DC input with multimeter, verify DC input cable polarity.
+
-
Figure 4.14
4. Connect the inverter end to the battery input port of the inverter as shown below, and
push it in until you hear a "Click" sound which proves the fastened connection.
Click
Figure 4.15

User Manual
4. Installation
16
There are two AC terminals on the inverter and the assembly steps are similar.
AC Grid Port is to connect to the grid and AC Backup Port is to connect to the critical load
circuit.
4.6 AC Cable Installation
AC-BACKUP terminal
AC-GRID terminal
AC-GRIDAC-BACKUP
ANTENNA
COM
Figure 4.16
NOTE:
AC Backup Connector is longer while the AC Grid Connector is shorter.
4.6.1 AC Grid Port Connection
Describe
Cable diameter 14~17mm
6mm²
7mm
Traverse cross sectional area
Exposure Length
Numerical value
Table 4.1
1. Strip the AC wires about 7mm.
Figure 4.17
18mm
23mm 7mm
7mm

User Manual
4. Installation
17
3. Crimp wires, screw torque 0.8N·m±0.1N·m.
2. Disassemble the AC Grid Connector and set the parts on the cable.
Figure 4.18
Figure 4.19
4. Push Housing into Body until you hear a “click” sound.
Figure 4.20
AC Grid
Click
Housing
5. Insert Seal Body and Claw into the Body, and then tighten the Nut with torque
2.5N·m±0.5N·m.
Figure 4.21
A: Body
B: Seal body
C: Nut
AB C

User Manual
4. Installation
18
Figure 4.22
NOTE:
A continuity test shall be made to ensure that the correct terminations have
been made after field wiring.
6. Push the AC Grid Connector into the AC Grid Port on the inverter and rotate the rotatory
ring on the AC Grid connector to the direction as marked “LOCK” on the connector.
(Hold the Body while rotating the ring).
Click
4.6.2 AC Backup Port Connection
Describe
Cable diameter
6mm²
7mm
Traverse cross sectional area
Exposure Length
Numerical value
Table 4.2
1. Strip the AC wires about 7mm.
Figure 4.23
18mm
23mm 7mm
7mm
14~17mm

User Manual
4. Installation
19
3. Crimp wires, screw torque 0.8N·m±0.1N·m.
2. Disassemble the AC Backup Connector and set the parts on the cable.
Figure 4.25
4. Push Housing into Body until you hear a “click” sound.
Figure 4.26
Click
Housing
5. Insert Seal Body and Claw into the Body, and then tighten the Nut with torque
2.5N·m±0.5N·m.
Figure 4.27
Figure 4.24
A: Body
B: Seal body
C: Nut
AB C
AC Backup