SOLIS S5-GC75K-US User manual

User Manual
for S5 Series Grid Inverter
Version 1.9, Release Date: 03,2023
Applicable models
S5-GC75K-US
S5-GC80K-US
S5-GC90K-US
S5-GC100K-US

● Product specifications are subject to change without notice. Every attempt has been made
to make this document complete, accurate and up-to-date. Individuals reviewing this
document and installers or service personnel are cautioned, however, that Solis
reserves the right to make changes without notice and shall not be responsible for any
damages, including indirect, incidental or consequential damages caused by reliance
on the material presented including, but not limited to, omissions, typographical errors,
arithmetical errors or listing errors in the material provided in this document.
● Solis accepts no liability for customers' failure to comply with the
instructions for correct installation and will not be held responsible for upstream or
downstream systems Solis equipment has supplied.
● The customer is fully liable for any modifications made to the system; therefore,
any hardware or software modification, manipulation, or alteration not expressly
approved by the manufacturer shall result in the immediate cancellation of the warranty.
● Given the countless possible system configurations and installation environments, it is
essential to verify adherence to the following:
● There is sufficient space suitable for housing the equipment.
● Airborne noise produced depending on the environment.
● Potential flammability hazards.
● Solis will not be held liable for defects or malfunctions arising from:
● Improper use of the equipment.
● Deterioration resulting from transportation or particular environmental conditions.
● Performing maintenance incorrectly or not at all.
● Tampering or unsafe repairs.
● Use or installation by unqualified persons.
● This product contains lethal voltages and should be installed by qualified electrical or
service personnel having experience with lethal voltages.
Important notes

10 Appendix
9 Specifications
8 Troubleshooting
7 Maintenance
6 Settings
5 Commissioning
4 Communication
3 Installation
2 Safety
1 Introduction
Table of Contents

Table of Contents
1. Introduction
1.1 Product Description
1.4 Unpacking
1.7 Storage
2. Safety Instruction
2.1 Safety symbols
2.2 General safety instructions
2.3 Notice for use
2.4 Protection Circuitry and Controls
3. Installation
3.1 Environmental considerations
3.1.1 Select a location for the inverter
3.1.2 Other environmental considerations
3.2 Product handling
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3.3 Mounting the Inverter
4
4
6
8
9
9
9
10
10
11
11
11
12
14
15
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16
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3.3.1 Wall mounting
17
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5. Commissioning
5.1 Selecting the appropriate grid standard
5.1.1 Verifying grid standard for country of installation
33
33
33
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…………………
5.2 Changing the grid standard
5.2.1 Procedure to set the grid standard
5.3 Setting a custom grid standard
5.4 Preliminary checks
5.4.3 DC Connections
5.4.4 AC Connections
5.4.1 DC configuration
33
33
34
35
35
36
36
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5.4.2 AC configuration
36
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6. Normal operation
6.1 Start-up procedure
6.2 Shutdown procedure
37
37
37
6.3 Main Menu 38
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3.3.2 Rack mounting
3.4 Electrical Connections 20
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21
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3.4.1 Grounding
23
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3.4.2 Connect PV side of inverter
25
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3.4.3 Connect grid side of inverter
29
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4. Communication & Monitoring
4.1 RS485 communication 29
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1.2 Front Panel Display ……………………………………………………………………………………… 5
1.3 LED Status Indicator Lights
………………………………………………………………………………………
5
1.6 Tools Required for Installation
………………………………………………………………………………
7
1.5 Inverter Circuit Diagram
………………………………………………………………………………
7
1.8 Notice of Disposal
………………………………………………………………………………………………
8

Table of Contents
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6.5.1 Set Time 40
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6.5.2 Set Address 40
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6.6 Advanced Info - Technicians Only 41
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6.6.1 Alarm Message 41
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6.6.2 Running Message 41
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6.6.3 Version 42
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6.6.4 Daily Energy
42
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6.6.5 Monthly Energy
42
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6.6.6 Yearly Energy
43
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6.6.7 Daily Records
43
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6.6.8 Communication Data
43
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6.6.9 Warning Message
43
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6.7 Advanced Settings - Technicians Only 44
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6.7.1 Selecting Standard 44
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6.7.2 Grid ON/OFF 46
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6.7.3 Clear Energy 46
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6.7.4 Reset Password 46
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6.7.5 Power control 47
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6.7.6 Calibrate Energy 47
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6.7.7 Special Settings
47
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6.7.8 STD Mode settings
48
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6.7.9 Restore Settings
58
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6.7.10 HMI Update
59
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6.7.11 External EPM Set
59
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6.7.12 Restart HMI
59
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6.7.13 Debug Parameter
60
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6.7.15 DSP Update 61
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6.7.16 Compensation Set 61
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6.7.17 I/V Curve
62
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6.7.14 Fan Test
60
7. Maintenance ……………………………………………………………………………………………………………………… 64
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7.1 Anti-PID Function 64
8. Troubleshooting ……………………………………………………………………………………………………………… 66
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8.1 Current Alarm 66
8.2 Alarm History 66
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8.3 Error Messages 66
9. Specifications …………………………………………………………………………………………………………………… 70
10. Appendix ……………………………………………………………………………………………………………………… 74
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7.2 Fan Maintenance 65
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6.5 Settings 40
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6.8 AFCI function 63
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38
6.4 Information …………………………………………………………………………………………………………
6.4.1 Lock screen

1. Introduction
1.1 Product Description
4
User Manual
Figure 1.1 Front view
LED lights
LCD display
4 buttons
Figure 1.2 Bottom view
DC Switch AC output
DC input
AC Switch
Vent COM
COM
Solis Three phase Inverters convert DC power from the photovoltaic(PV) array
into alternating current(AC) power that can satisfy local loads as well as feed the power
distribution grid.
This manual covers the three phase inverter models listed below:
S5-GC75K-US, S5-GC80K-US, S5-GC90K-US, S5-GC100K-US

1. Introduction
1.2 Front Panel Display
5
User Manual
Figure 1.3 Front Panel Display
Figure 1.4 Status Indicator LED
1.3 LED Status Indicator Lights
There are three LED status indicator lights in the front panel of the inverter.
POWER LED (red) indicates the power status of the inverter.
OPERATION LED (green) indicates the operation status.
ALARM LED (yellow) indicates the alarm status.
Description
The inverter detects DC power.
No DC power or low DC power.
The inverter is operating properly.
The inverter has stopped producing power.
The inverter is initializing| Updating software
Alarm or fault condition is detected.
No fault or alarm is detected.
Status
ON
OFF
ON
OFF
OFF
ON
FLASHING
Light
POWER
OPERATION
ALARM

1. Introduction User Manual
1.4 Unpacking
Inverter packing list
Part #
1
2
Description
Inverter
Back plate
Quantity
1
1
Hexagon bolt M6*12
Remarks
The inverter ships with all accessories in one carton.
When unpacking, please verify all the parts listed below are included:
3
4
5-1
5-2
5-3
6
Fastening screw 2
DC connector
Hexagon bolt
Hexagonal nut
Washer
User manual
16 for 75K
18 for 80K
20 for (90-100)K
4
4
4
1
123
46
5
Hexagon bolt M10*40
Manual
6
Inverter
DC connector
Us er Manual
for S 5 Serie s Grid In verter
Appl icabl e model s
S5-G C75K -US
S5-G C80K -US
S5-G C90K -US
S5-G C100 K-US
Staubli Electrical Connectors AG
PV-KBT4-EVO 2/6I-UR
PV-KST4-EVO 2/6I-UR

1. Introduction User Manual
1.5 Inverter Circuit Diagram
7
Technician Screwdriver Torqx T20 Screwdriver Wire Strippers
12AWG to 6AWG
Wire Strippers
20AWG to 10AWG
Drill and Impact Driver
Multimeter (AC/DC amps)
Channel Locks
LUG Crimping Tool
Torque Screwdriver Mc4 Crimping Tool
S5-GC(75-100)K-US
Three Phase Inverter
DC-1
+
-
DC-10
+
--MPPT-10
DC
Switch
DC
Bus
Inverter
Module
Output
Filter
AC
Relay
DC
Filter MPPT-1
Current
Sense
DC Link
Cap
L1
L2
AC
Grid
AC
Filter
AC EMI
Filter
L3
+
--
SPD
EMI
Filter-10 PE
SPD
SPD
EMI
Filter-1
EMI
Filter-
10
1.6 Tools Required for Installation
Figure 1.5 Inverter Circuit Diagram

User Manual
● 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 -40~158°F and humidity should be between 0 to 100%, non-condensing.
● Do not stack more than two (2) inverters high on a single pallet. Do not stack more than
2 pallets high.
● 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.
1.7 Storage
If the inverter is not installed immediately, storage instructions and environmental conditions are listed below:
DO NOT STACK
MORE THAN HIGH
2
1. Introduction
SAVE THESE INSTRUCTIONS – This manual contains important instructions for Models
S5-GC75K-US, S5-GC80K-US, S5-GC90K-US , S5-GC100K-US
that shall be followed during installation and maintenance of the inverter.
8
1.8 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 .

2. Safety Instruction User Manual
2.1 Safety symbols
Safety symbols used in this manual, which highlight potential safety risks and important safety
information, are listed below:
WARNING
Symbol indicates important safety instructions, which if not correctly
followed, could result in serious injury or death.
NOTE
Symbol indicates important safety instructions, which if not correctly
followed, could result in damage to or the destruction of the inverter.
CAUTION, RISK OF ELECTRIC SHOCK
Symbol indicates important safety instructions, which if not correctly
followed, could result in electric shock
CAUTION, HOT SURFACE
Symbol indicates safety instructions, which if not correctly
followed, could result in burns.
2.2 General safety instructions
WARNING
Do not connect PV array positive (+) or negative (-) to ground – doing
so could cause serious damage to the inverter.
WARNING
Electrical installations must be done in accordance with local and
national electrical safety standards.
WARNING
To reduce the risk of fire, branch circuit over-current protective
devices (OCPD) are required for circuits connected to the Inverter.
CAUTION
The PV array (solar panels) supplies a DC voltage when exposed to light.
CAUTION
The inverter's surface temperature can reach up to 75°C (167°F). To avoid
risk of burns, do not touch the surface when the inverter is operating.
Inverter must be installed out of the reach of children.
WARNING
The inverter can only accept a PV array as a DC input. Using any other
type of DC source could damage the inverter.
9

User Manual
CAUTION
Risk of electric shock from energy stored in the inverter's capacitors.
Do not remove cover until five (5) minutes after disconnecting all sources
of supply have passed, and this can only be done by a service technician.
The warranty may be voided if any unauthorized removal of cover occurs.
The inverter has been constructed according to applicable safety and technical guidelines.
Use the inverter in installations that meet the following requirements ONLY:
1). The inverter must be permanently installed.
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 system design must meet inverter specifications.
To start-up the inverter, the Grid Supply Main Switch (AC) must be turned on, BEFORE the DC
Switch is turned on. To stop the inverter, see power down instruction on page 40 Section 6.2.
2.3 Notice for use
2.4 Protection Circuitry and Controls
To meet relevant codes and standards, the Solis U.S. three phase inverter line is
equipped with protective circuitry and controls. These include Arc Fault Circuit Interrupter
(AFCI) and Anti-Islanding Protection.
Arc Fault Circuit Interrupter AFCI:
Edition 2011 of the National Electrical Code®, Section 690.11, requires that all PV plants
attached to a building are fitted with a means of detecting and interrupting serial electric
arcs in the PV wiring and array. An electric arc with a power of 300W or greater must be
interrupted by the AFCI in the time specified by UL 1699B. A triggered AFCI fault may only
be reset manually. After clearing the source of the fault, the AFCI can be deactivated via
the inverter front panel interface.
Anti-Islanding Protection:
Anti-Islanding is a condition where the inverter cease to produce power when the grid
is not present. Circuitry, along with firmware, has been designed to determine if the grid is
present by adjusting the output frequency of the inverter. In the case of a 60Hz resonant
system where the inverter is partially isolated from the grid, the inverter programming can
detect if there is a resonant condition or if the grid is actually present. It can also
differentiate between inverter’s operating in parallel and the grid.
2. Safety Instruction
10

User Manual
3.1 Environmental considerations
3.1.1 Location selection for the inverter
When selecting a location for the inverter, consider the following:
● The temperature of the inverter heat-sink can reach 167°F.
● The ambient temperature and relative humidity should meet the following requirements.
● If multiple inverters are installed on site, a minimum clearance of 30 inches should be kept
between each inverter and all other mounted equipment. The bottom of the inverter should be
at least 20 inches above of the ground or floor (see Figure 3.1 and 3.2).
● The LED status indicator lights and the LCD located on the inverter's front panel should not be
blocked.
● Adequate ventilation must be present if the inverter is to be installed in a confined space.
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.
3. Installation
11
CAUTION, HOT SURFACE CAUTION, HOT SURFACE
● The load bearing structure shall meet the following requirements.
Made of non-inflammable materials
Max. load bearing capacity ≥ 4
times of inverter weight
●
●
Maximum Temperature Minimum Temperature
-24°F
-31°C
140°F
60°C
Max. Relative Humidity
100%
Non-Condensing
Maximum Altitude
13,123 feet
4,000 meters

User Manual
3. Installation
3.1.1.1 Examples of correct and incorrect installations
3.1.2 Other environmental considerations
3.1.2.1 Consult technical data
Consult the specifications section (section 9) for additional environmental conditions
(protection rating, temperature, humidity, altitude, etc.).
3.1.2.3 Vertical wall installation
For vertical installation, this model of Solis inverter should be mounted vertically
(90 degrees or backwards in less than or equal to 15 degrees).
Figure 3.1 Recommended Installation locations
≥15°
3.1.2.2 Horizontal installation
For horizontal installation, this model of Solis inverter should be mounted horizontally
(upwards in more than 15 degrees off the horizontal plane).
12
Indoor Direct Sun
Shade Cover
Shade Cover
Direct Rain
Shade Cover
Rating
NEMA 4X

User Manual
Figure 3.3 Distances required between inverters when multiple inverters are installed
3. Installation
≥30in
≥20in ≥20in
≥20in
Figure 3.2 Clearance distances requirement for the inverter
NOTE
Nothing should be stored on or placed against the inverter.
≥20in
≥20in
≥20in
≥20in
13
≥40in

User Manual
3.1.2.6 Flammable substances
Do not install near flammable substances. Maintain a minimum distance of three (3) meters
(10 feet) from such substances.
3.1.2.7 Living area
Do not install in a living area where the prolonged presence of people or animals is expected.
Depending on where the inverter is installed (for example: the type of surface around the
inverter, the general properties of the room, etc.) and the quality of the electricity supply, the
sound level from the inverter can be quite high.
3.2 Product handling
Figure 3.4 Handles used to move the inverter shown circled in red
3.1.2.5 Air circulation
Do not install in small, closed rooms where air cannot freely circulate. To prevent overheating,
always ensure that the air flow around the inverter is not blocked.
Please review the instruction below for handling the inverter:
1. The red circles below denote cutouts on the product package.
Push in the cutouts to form handles for moving the inverter (see Figure 3.4).
2. Two people are required to remove the inverter from the shipping box. Use the handles
integrated into the heat sink to remove the inverter from the carton (see Figure 3.5).
3.1.2.4 Avoiding direct sunlight
Installation of the inverter in a location exposed to direct sunlight should to be avoided.
Direct exposure to sunlight could cause:
● Power output limitation (with a resulting decreased energy production by the system).
● Premature wear of the electrical/electromechanical components.
● Premature wear of the mechanical components (gaskets) and user interface.
3. Installation
14

User Manual
WARNING
Due to the weight of the inverter, contusions or bone fractures
could occur when incorrectly lifting and mounting the inverter.
When mounting the inverter, take the weight of the inverter into
consideration. Use a suitable lifting technique when mounting.
3.3 Mounting the Inverter
Figure 3.5 Inverter handles
The inverter can be mounted to the wall or metal array racking. The mounting holes should be
consistent with the size of the bracket or the dimensions shown in Figure 3.6.
Figure 3.6 Inverter wall mounting
Φ11mm(0.43in)
10 mm( in)08 39.7
369mm(14.5in)
3. Installation
15

User Manual
Refer to figure 3.3, figure 3.7 and figure 3.8 Inverter shall be mounted upright, with electrical
connections downward. The steps to mount the inverter are listed below.
1. Refer to Figure 3.7, drill holes for mounting screws based on the hole diameter of
bracket using a precision drill keeping the drill perpendicular to the wall.
Max depth is 3.5 inch.
2. M ake sure the bracket is horizontal. And the mounting holes (in Figure 3.7) are marked
correctly. Drill the holes into wall at your marks.
3. Use the suitable mounting screws to attach the bracket on the wall.
3.3.1 Wall mounting
Figure 3.8 Install the inverter
4. Lift the inverter and hang it on the bracket, and then slide down to make sure they
match perfectly.
Figure 3.7 Inverter wall mounting
Bracket
Suitable mounting screws
Figure 3.9 Secure the inverter
5. Use supplied 2 M6x12 hex bolts to secure the inverter to the bracket.
Torque:22.1-25.8 ft.lbs
Torque:1.5-2.2 ft.lbs
3. Installation
16

User Manual
× ×
3.3.2 Rack mounting
1. Select a location for the inverter
With a NEMA 4X protection rating, the inverter can be installed both outdoors and
indoors.
When the inverter is running, the temperature of the chassis and heat sink will be higher
than the ambient . Do not install the inverter in a location that you accidentally touch.
Do not install the inverter where flammable or explosive materials are stored.
2. Installation angle
Install inverter as shown in Figure 3.10 below.
Install the inverter vertically. If the inverter cannot be mounted vertically, it may be
“mounted at angles greater than 15 degrees off horizontal. Inverter cannot be mounted flat.
√
Vertical
√
Backward
Figure 3.10 Correct installation Angle
Figure 3.11 Wrong installation Angle
Inverted Leaning
forward
The steps to mounting to the rack are listed below:
≤15°
≥15°
Off horizontal
√
3. Installation
17

User Manual
1 mm2.5
3. Install mounting plate
a. Remove the bracket and fasteners from the packaging. Mark the position for hole, drilling
according to the hole positions of the bracket.
Figure 3.12 Mark the position for hole
b. Drill the marked holes. It is recommended to apply anti-corrosive paint at the hole for
corrosion protection.
Figure 3.13 Drill hole
3. Installation
18