CanadianSolar CSI-7K-S22003-E User manual

CSI-7K-S22003-E
CSI-8K-S22003-E
CSI-9K-S22003-E
PV Inverter User Manual
(Part No.: 91000078 Release Date: March, 2023)

Contents
1 Introduction ................................................................................................................................................................................ 1
1.1 General Information .............................................................................................................................................................................1
1.2 User Manual Disclaimer ......................................................................................................................................................................1
1.3 Limitation of Liability ............................................................................................................................................................................1
1.4 Target Group.............................................................................................................................................................................................1
1.5 Symbol Conventions..............................................................................................................................................1
1.5.1 Warnings in the Manual ................................................................................................................................1
1.5.2 Labels on Product and Packaging................................................................................................................2
2 Safety Instruction ..................................................................................................................................................................... 2
2.1 General Safety ........................................................................................................................................................2
2.2 Notice for Use.........................................................................................................................................................2
2.2.1 Personnel Requirements...............................................................................................................................2
2.2.2 Operation Requirements...............................................................................................................................2
2.2.3 Protecting Labels ............................................................................................................................................2
3 Product Overview...................................................................................................................................................................... 3
3.1 Product Introduction.............................................................................................................................................3
3.2 Appearance.............................................................................................................................................................3
3.3 Product Nameplate ...............................................................................................................................................4
4 Storage........................................................................................................................................................................................... 4
5 Unpacking And Inspection .................................................................................................................................................... 5
6 Installation................................................................................................................................................................................... 5
6.1 Basic Installation Requirements..........................................................................................................................5
6.2 Mounting Wall-Mounting Bracket.......................................................................................................................7
6.3 Installing Inverter ..................................................................................................................................................8
7 Electrical Connection ............................................................................................................................................................... 8
7.1 Safety .......................................................................................................................................................................8
7.2 Recommended Cables ..........................................................................................................................................8
7.3 Meter / CT Connection (Optional) .......................................................................................................................8
7.4 Wiring PE Cable......................................................................................................................................................8
7.5 Wiring AC Output...................................................................................................................................................9
7.6 Wiring DC Input .................................................................................................................................................. 11
7.6.1 Requirement for DC Input.......................................................................................................................... 11
7.6.2 Wiring ............................................................................................................................................................ 12
7.6.3 Connecting PV Array (DC Input) ................................................................................................................ 13
7.7 Dred Port Connections....................................................................................................................................... 13
8 Communication........................................................................................................................................................................ 14
8.1 Inverter Monitoring Connection.................................................................................................................................................. 14
9 CSI Cloudpro APP ..................................................................................................................................................................... 14
10 Commissioning Inverter .................................................................................................................................................... 14
10.1 Electrical Inspection ......................................................................................................................................... 14
10.2 Mechanical Inspection ..................................................................................................................................... 15

10.3 Start-Up Inverter............................................................................................................................................... 15
10.4 Led Indicators ................................................................................................................................................... 15
10.5 Switch OFF ......................................................................................................................................................... 15
11 Daily Maintenance................................................................................................................................................................ 16
12 Trouble-Shooting................................................................................................................................................................... 16
12.1 Warning.............................................................................................................................................................. 16
12.2 Errors.................................................................................................................................................................. 16
13 Handling The Inverter......................................................................................................................................................... 18
13.1 Removing Inverter............................................................................................................................................ 18
13.2 Packing Inverter................................................................................................................................................ 18
13.3 Disposing Inverter............................................................................................................................................ 18
14 Pv System Installation........................................................................................................................................................ 18
Appendix A: Acronyms And Abbreviations ...................................................................................................................... 19
Appendix B: Specification........................................................................................................................................................ 20
Appendix C: Ct Installation Manual Guide ....................................................................................................................... 21
1. Scope ...................................................................................................................................................................... 21
2. CT Specification ..................................................................................................................................................... 21
3. CT Installation........................................................................................................................................................ 21
3.1 System Diagram.................................................................................................................................................. 21
3.2 Wiring Signal Cable ............................................................................................................................................ 21
3.3 Install the CT........................................................................................................................................................ 22
3.4 Setting on the Inverter (Default Setting is “OFF”) .......................................................................................... 22
Appendix D: Single-Phase Meter Installation Guide.................................................................................................... 23
1. Scope ...................................................................................................................................................................... 23
2 Meter Specification ............................................................................................................................................ 23
3. Meter Installation ................................................................................................................................................. 23
3.1 System Diagram.............................................................................................................................................. 23
3.2 Wiring Signal Cable ........................................................................................................................................ 23
3.3 Wiring Electrical Cable ................................................................................................................................... 24
3.4 Setting on the Inverter (Default Setting is “OFF”) ...................................................................................... 24
Appendix E: Csi Cloudpro App................................................................................................................................................ 25
1 APP Introduction.................................................................................................................................................... 25
2 Download And Install the CSI Cloudpro APP ..................................................................................................... 25
3 Register an Installer Account ............................................................................................................................... 25
3.1 Local Mode....................................................................................................................................................... 26
3.2 Parameters Setting ......................................................................................................................................... 26
3.3 Exit Local Mode. .............................................................................................................................................. 32

1 Introduction
1/ 32
1 Introduction
1.1 General Information
This manual provides important safety information on relating to the installation, maintenance and usage of single
phase PV inverters. Both users and professional installers must read these guidelines carefully and strictly follow
these instructions. Failure to follow these instructions may result in death, serious injury or property damage.
Only qualified professionals and service personnel can do the installation and operation (refer to 62109-1). Installers
must inform end-users (consumers) about the aforesaid information accordingly.
This manual is only valid for the PV inverter types：CSI-7K-S22003-E, CSI-8K-S22003-E, CSI-9K-S22003-E.
1.2 User Manual Disclaimer
The information contained in this manual is subject to change by CSI Solar Co., Ltd. without prior notice. CSI Solar Co.,
Ltd. gives no warranty of any kind whatsoever, either explicitly or implicitly, with respect to the information contained
herein.
In the event of any inconsistency among different language versions of this document, the English version shall
prevail. Please refer to our product lists and documents published on our website at: http://www.csisolar.com as
these lists are updated on a regular basis.
1.3 Limitation of Liability
CSI Solar Co., Ltd. shall not be held responsible for damages of any kind, including-without limitation-bodily harm,
injury or damage to property, in connection with handling PV inverters, system installation, or compliance or non-
compliance with the instructions set forth in this manual.
1.4 Target Group
This document is intended for installers and users.
1.5 Symbol Conventions
The symbols that may be found in this document or on the product packaging are defined as follows.
1.5.1 Warnings in the manual
A warning describes a hazard to equipment or personnel. It calls attention to procedure or practice.
Symbol
Description
DANGER
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not avoided, could result in minor or
moderate injury.
NOTICE
NOTICE indicates a situation which, if not avoided, could result in equipment or property damage.
Information
Information indicates that you must read carefully to ensure optimal operation of the system.

2 Safety Instruction
2/32
1.5.2 Labels on product and packaging
Symbol
Description
Hot surfaces!
Risk of burns due to hot components!
Danger to life due to high voltage!
Time need to discharge stored energy in the capacitors.
Grounding
Direct Current (DC)
Alternating Current (AC)
Check the user manual before service.
CE mark.
WEEE designation.
2 Safety Instruction
2.1 General Safety
The Inverter has been designed and tested strictly according to the international safety codes, however, certain safety
precautions must be observed when installing and operating this inverter. Read and follow all the instructions,
cautions and warnings in this user manual carefully before any work and keep this manual for future reference.
2.2 Notice for Use
2.2.1 Personnel requirements
Only qualified personnel are allowed to install and commission the inverter, they should:
1) Receive professional training and get the authorization.
2) Be familiar with the safety specification about the electrical system.
3) Be familiar with the local requirements, rules and regulations.
4) Understand the composition and working principles of the grid-tied PV system.
2.2.2 Operation requirements
Use the inverter in installations that meet the following specifications only.
1) Permanent installation is required.
2) The electrical installation must meet all the applications 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 Main Switch (AC) must be switched on, before the solar panel’s DC solar switched
on. To stop the inverter, the Grid Supply Main Switch (AC) must be switched off, before the solar panel’s DC isolator
switched off.
2.2.3 Protecting labels
1) Do not scrawl or damage any labels on the inverter enclosure, because these labels contain important information
about safe operation.
2) Do not scrawl or damage the nameplate on the inverter enclosure, because the nameplate contains important
product information.

3 Product Overview
3/ 32
3 Product Overview
3.1 Product Introduction
The inverters are single-phase gird-connected PV string inverters without transformer, which can convert the DC
power from the photovoltaic (PV) strings into alternating current (AC) power, and feed the power into the power grid.
This document involves the following product models: CSI-7K-S22003-E, CSI-8K-S22003-E, CSI-9K-S22003-E.
PV grid-connected system mainly includes PV modules, DC switch, inverter, AC switch, electricity meter, and local grid.
The PV power system diagram is shown as FIG.3-1.
KWH
PV Modules DC Switch Inverter AC Switch Electricity Meter Utility Grid
FIG. 3-1 PV Power System Diagram
3.2 Appearance
Front view and bottom view
A
BCE F GH ID
FIG. 3-2 Product Appearance

4 Storage
4/32
Object
Name
Description
Ａ
LED indicator
Indicates inverter operation status.
Ｂ
DC disconnect switch
Disconnects the DC current safely.
Ｃ
DC input connectors
/
D
Communication port
/
E
DRM receptacle
Connects wireless datalogger (WiFi or GPRS), RS485.
F
CT/Meter receptacle（optional）
/
G
Waterproof and breathable valve
Connects CT or Meter.
H
AC receptacle
Jack/Receptacle for AC/grid connection.
I
External ground point
/
3.3 Product Nameplate
The nameplate provides a unique identification of the inverter (Product type, device -specific characteristics,
certificates and approvals).
The nameplate is on the left side of the enclosure.
Product Name: Grid-connected PV Inverter
Model Number: CSI-7K-S22003-E
Vmax. PV(absolute max.): 600V dc
MPPT Voltage Range: 100~500V dc
Max. Input Current: 15/30 A dc
Max. Short-Circuit Current: 18.8/37.6 A dc
Rated Output Power: 7000W
AC Nominal Voltage: 230V ac
AC Nominal Frequency: 50Hz
Max.Output Current: 31.8A ac
Power Factor: ＞0.99(0.8 leading...0.8 lagging)
Overvoltage Class: ll(DC), lll(AC)
Degree of Protection: IP65
OperatingTemperature Range: -25°C...+60°C
5mins
LED Indicators
Normal
Waiting
Steady Green
Blinking Green
No DC Input
Off
ErrorSteady Red
XXXXXXXX(For Australia market)
More details, please refer
to the user manual.
(Scan the QR code)
Max. Output Apparent Power: 7000VA
Rated Apparent Power: 7000VA
Protective Class: Class I
Topology: Transformerless
Product Name: Grid-connected PV Inverter
Model Number: CSI-8K-S22003-E
Vmax. PV(absolute max.): 600V dc
MPPT Voltage Range: 100~500V dc
Max. Input Current: 15/30 A dc
Max. Short-Circuit Current: 18.8/37.6 A dc
Rated Output Power: 8000W
AC Nominal Voltage: 230V ac
AC Nominal Frequency: 50Hz
Max.Output Current: 36.3A ac
Power Factor: ＞0.99(0.8 leading...0.8 lagging)
Overvoltage Class: ll(DC), lll(AC)
Degree of Protection: IP65
OperatingTemperature Range: -25°C...+60°C
5mins
LED Indicators
Normal
Waiting
Steady Green
Blinking Green
No DC Input
Off
ErrorSteady Red
XXXXXXXX(For Australia market)
More details, please refer
to the user manual.
(Scan the QR code)
Max. Output Apparent Power: 8000VA
Rated Apparent Power: 8000VA
Protective Class: Class I
Topology: Transformerless
Product Name: Grid-connected PV Inverter
Model Number: CSI-9K-S22003-E
Vmax. PV(absolute max.): 600V dc
MPPT Voltage Range: 100~500V dc
Max. Input Current: 15/30 A dc
Max. Short-Circuit Current: 18.8/37.6 A dc
Rated Output Power: 9000W
AC Nominal Voltage: 230V ac
AC Nominal Frequency: 50Hz
Max.Output Current: 40.9A ac
Power Factor: ＞0.99(0.8 leading...0.8 lagging)
Overvoltage Class: ll(DC), lll(AC)
Degree of Protection: IP65
OperatingTemperature Range: -25°C...+60°C
5mins
LED Indicators
Normal
Waiting
Steady Green
Blinking Green
No DC Input
Off
ErrorSteady Red
XXXXXXXX(For Australia market)
More details, please refer
to the user manual.
(Scan the QR code)
Max. Output Apparent Power: 9000VA
Rated Apparent Power: 9000VA
Protective Class: Class I
Topology: Transformerless
FIG.3-3 Inverter Nameplate (for reference)
4 Storage
The following requirements should be met when the inverters need to be stored:
Do not unpack the inverter.

5 Unpacking and Inspection
5/ 32
Storage temperature: –40°C ~ +70°C.
Storage humidity: 0% ~ 100%RH (Non-Condensing).
The warehouse should be clean, well-ventilated, and non-corrosive gas (corrosive or flammable gases), meanwhile it
should be accessible all the time.
No smoking, no illegal use of electricity and fire.
When storing inverters, do not stack more than the allowed layers to avoid damage, which number marked on the
product packaging.
Do not tilt the package or place it upside down.
Regular inspection is required during the storage.
After long periods storage, the inverters need to be inspected and tested by technical Engineer before they are put
into use.
5 Unpacking and Inspection
Before unpacking the inverter, check the package appearance thoroughly, such as for holes and cracks, and check the
inverter model accordingly. If you discover any damage to the packaging which indicates the inverter may have been
damaged, or the inverter model is not the one you requested, do not unpack the product and contact your dealer
immediately.
After opening the package, check all of the accessories carefully in the carton. If any damage is found or any
component is missing, contact your local installer.
Notice:
1) For component details, see the packing list document in the packing case.
2) Need two persons to carry the inverter.
6 Installation
6.1 Basic Installation Requirements
1) Do not install the inverter on the structures constructed of flammable, thermolabile or explosive materials.
2) The installation surface must be strong enough to bear the inverter's weight for a long period time. (Please check
the inverter’s weight in the product specification of Appendix B).
3) The inverter is protected to IP65, can be installed indoors and outdoors.
4) The humidity of the installation location should be below 100% without condensation.
5) The ambient temperature should be between -25°C to 60°C.
6) Install at eye-level for easy operation.
7) Do not install the inverter near television antenna or any other antennas and antenna cables.
8) Ensure the inverter is out of children's reach.
9) Install inverter at the locations with some cover or protection, to ensure the optimum operation, as per FIG.6-1.
10) Do not install in small closed cabinet where air cannot circulate freely. Do not put any other objects on the
inverter, as per FIG.6-2.

6 Installation
6/32
FIG.6-1 Inverter Installation Positions FIG.6-2 Forbid to Install in Small Closed Cabinet
11) Comply with the Min. clearance to walls, other inverters, or objects to ensure the installation and maintenance,
meanwhile for the good heat dissipation.
FIG.6-3 Installation Clearance Requirements
Min. 30 cm
Min. 50 cm
Min. 30 cm Min. 30 cm Min. 30 cm Min. 30 cm
Min. 30 cm Min. 30 cm Min. 30 cm Min. 30 cm
Min. 50 cm Min. 50 cm Min. 50 cm
Min. 50 cm Min. 50 cm Min. 50 cm Min. 50 cm
Min. 50 cm Min. 50 cm Min. 50 cm
FIG.6-4 Staggered Installation Mode (Recommended)
12) Install the inverter vertically or at a maximum backward tilted angle of 15 degrees to facilitate heat dissipation,
and to ensure that no moisture can penetrate the product.
Direction
Min. clearance (cm)
Above
50
Below
50
Sides
30
Front
30

6 Installation
7/ 32
0~15°
FIG.6-5 Installation Angle Requirements
13) Do not install the inverter outdoors in salt, sulfur or other corrosive areas.
The inverter would be corroded in salt area (i.e. marine environments), and the corrosion may cause fire. Salt area refers
to the region within 500 meters from the coast.
Please consult the CSI Solar Co., Ltd. technical support department on the use of inverters in special climates (i.e. salt,
sulfur, or ammonia areas) which may affect the product warranty.
14) Need two persons to install the inverter.
6.2 Mounting Wall-mounting Bracket
Danger
To avoid electrical shock or other injury, please inspect existing electronic or plumbing installations
before drilling holes.
Procedure:
1) Use the wall-mounting bracket as a template and mark the positions of the drill holes, then drill the 4 holes
accordingly, as per FIG. 6-6. (Diameter = 11mm, Depth ≥ 55mm).
Note: The external dimensions (W × H) of inverter are shown as a dashed line in FIG. 6-6.
237 45 164
74.5 250
FIG.6-6 Drilling Positions (W x H, 399 x 446mm)
2) Drill expansion anchors into the corresponding four holes, and then fix the wall-mounting bracket to the wall with
self-tapping screws (spec, ST 6.3 x 50), as per FIG. 6-7 & FIG. 6-8.
FIG.6-7 Install Expansion Anchors FIG.6-8 Fix Wall-mounting Bracket

7 Electrical Connection
8/32
6.3 Installing Inverter
Note: It must be ensured that the wall-mounting bracket is properly fixed was accurately mounted fixed to the wall
before installing the inverter.
Installation steps:
1) Hang the inverter on wall-mounting bracket. Keep balance during the operation to prevent device damage from
colliding with walls or obstacles, as per FIG. 6-9.
2) Use two safety bolts to fix both sides of inverter to ensure the inverter fixed to the wall firmly, as per FIG. 6-10.
FIG. 6-9 Hang the Inverter on Wall-mounting Bracket FIG. 6-10 Fix Both Sides of Inverter
7 Electrical Connection
7.1 Safety
Danger
Danger to life due to lethal voltages in the inverter!
Before performing any work on the inverter, must disconnect both AC and DC sides.
Warning
Damage to electronic components may happen due to electrostatic discharge. Take appropriate ESD
precautions when replacing and installing the inverter.
Note: Testing for multiple phase combinations as per AS/NZS 4777.2:2020 Section 5 has not been conducted.
7.2 Recommended Cables
Cable Name
Cable Type
Conductor Cross-Sectional
Area
Outer Diameter
DC input cable
PV cable, above 600V.
4~6mm2
5.5~7.4mm
AC output cable
Three cores outdoor cable with
copper conductor (L, N, PE).
6~16mm2
13~18mm
PE cable
Single core outdoor cable with
copper conductor.
6mm2
N/A
Note: No cable is supplied.
7.3 Meter / CT Connection (Optional)
The inverter has integrated export limitation functionality. To use this function, a power meter or a CT must be
installed.
For installation and operation methods, see Appendix part of meter and CT installation guides.
7.4 Wiring PE Cable
To achieve ground protection purpose, the inverter must be connected to the AC grounding conductor of the utility
grid via PE cable.
Warning
Because of the transformerless design, the DC positive pole and DC negative pole of PV arrays
cannot do grounding.
Note: The PE point at the AC output point is used only as a PE equipotential point, and cannot substitute for the PE

7 Electrical Connection
9/ 32
point on the enclosure.
Procedure:
1) Insert the grounding conductor into the suitable terminal lug and crimp the contact.
2) Fix terminal lug on external ground point by screw M4x10. Torque: 1.4 N.m.
FIG. 7-1 External Grounding Point Position
Note:
The inverter complies with AS/NZS 5033.The installer does not need to perform any additional action, as this is already
set up. In the event of an earth fault, there will be a buzzer sound and a red light. The buzzer in the inverter will keep
ringing unless the fault condition is cleared.
7.5 Wiring AC Output
Warning
To ensure the inverter can be safely disconnected with load, must install a separate single-phase
circuit-breaker or other load disconnection unit for each inverter.
Note: The inverter is equipped with integrated RCM (Residual current operated monitor) and RCD
(Residual current protective device). The rated residual current of the circuit breaker must be over
300mA when the AC circuit breaker with RCM function selected.
Note: If an external RCD is used, a device of type A should be used, with a tripping current of 300mA or
higher.
Notice
The total capacity of PV-inverter is more than 3KW and less than or equal 6KW, the inverter's
displacement power factor is adjustable between 0.95 leading to 0.95 lagging, and do not need
external SPI.
The total capacity of PV-inverter is more than 6KW, the inverter's displacement power factor is
adjustable between 0.9 leading to 0.9 lagging, meanwhile need external SPI.
Install an independent two-pole circuit breaker at the output side of the inverter for protection, the recommended AC
circuit-breaker specifications are as follows:
Inverter type
AC circuit-breaker specifications
CSI-7K-S22003-E
40 A
CSI-8K-S22003-E
50 A
CSI-9K-S22003-E
50 A
Recommend maximum AC cable length:
Conductor cross section
Inverter Type
Allowed Max. length
4.0 mm2
6.0 mm2
10.0 mm2
16.0 mm2
CSI-7K-S22003-E
22 (m)
33 (m)
56 (m)
N/A
CSI-8K-S22003-E
N/A
26 (m)
43 (m)
69 (m)
CSI-9K-S22003-E
N/A
26 (m)
43 (m)
69 (m)
AC Three-core cable:
The grid connection is established by using three-core cable (L, N, and PE, as per FIG. 7-4).

7 Electrical Connection
10 /32
Components of AC connector（7-9KW）:
The AC connector is made of four components: pressure nut, sealing ring, threaded sleeve, plug.
Pressure Nut Sealing Ring Threaded Sleeve Plug (Metal pins and shell)
FIG. 7-2 Components of Connector
Wiring:
1) Strip the cable’s jacket, and then adjust the relative length of L, N and PE cables, to make the length of PE cable is at
least 5mm longer than L and N ones, as per FIG. 7-3.
30.0
25.0
PE
N
L
50.0
45.0
PE
N
L
FIG. 7-3 Adjust the Cable Length
2）When using flexible cables, the conductor must be connected with suitable core end ferrules according to DIN
46228-4, as per FIG. 7-4.
8.0 L N PE
FIG. 7-4 Crimp the Three-core’s Ferrule
Insert the L, N, and PE conductors into the corresponding pins of the plug (as per FIG. 7-5), then tighten the fastening
screws by screwdriver to fix conductors firmly.
8/9KW (Torque 2N.m）:
7KW (Torque 1.4N.m）:
FIG. 7-5 AC Terminal Positions

7 Electrical Connection
11 / 32
3) Push the threaded sleeve into the plug, screw the press nut tightly.
FIG. 7-6 Tightening the AC Connector
3) Finally, insert the AC connector into the corresponding AC receptacle on the inverter. Pay attention to the
polarities to make sure the correct assembling.
7KW 8/9KW
FIG. 7-7 Installing the AC Connector
7.6 Wiring DC Input
Note: The DC connectors are in paired (negative and positive ones). Pay attention to the polarities when assembling.
FIG. 7-8 DC Input Connectors
7.6.1 Requirement for DC input
These single-phase inverters are equipped with two MPP trackers.
Requirements for PV module strings:
1) Same type PV modules for each string.
2) The power, voltage (startup and open-circuit voltage) and operating current of each PV strings must meet the
allowable value of the inverter.
Note: Consider temperature coefficient of the PV modules.

7 Electrical Connection
12 /32
Check the inverter specification in section Appendix B.
7.6.2 Wiring
Negative Coupler & Contactor Pin Positive Coupler & Contactor Pin.
FIG. 7-10 Structure Illustration of DC Connector
Procedure steps
1) Strip the insulation of cable to about 7.5mm with the wire stripper tool. Note do not damage the conductors when
do the stripping, as per FIG. 7-11.
2) Place the contact around the conductors of the stripped cable, then crimp the contact with wire crimping pliers, as
per FIG. 7-12.
Ensure the conductors completely wrapped without loosening or damage.
FIG. 7-11 Strip the Cable Insulating Layer FIG. 7-12 Crimp the Contact
3) Insert the crimped contact pin into the connector back until one click audibly. Pull lightly on the cable to ensure the
contact pins of the connectors are engaged. Pay attention to the polarities when assembling.
4) Tighten the nut with a special wrench. Torque: 2.5~2.9 N.m.
FIG. 7-13 Insert the Contact FIG. 7-14 Tighten the Cable Gland
5) Insert the assembled connectors into the bottom terminal of the inverter until one sound click audibly.
The locked DC connectors can only be disconnected with special tool.
FIG. 7-10 Illustration of DC Ports

7 Electrical Connection
13 / 32
7.6.3 Connecting PV array (DC input)
Danger
Ensure the DC switch and AC breaker both are disconnected from the inverter before connect the PV
arrays.
Never connect PV array positive or negative pole to the ground, it could cause serious damages to the
inverter.
Warning
Improper operation during the wiring process can cause fatal injury to the operator or unrecoverable
damage to the inverter.
Only qualified personnel can perform the wiring work.
7.7 DRED port connections
This inverter is complied with the demand response mode (DRM, refer to AS/NZS 4777.2:2020), and RJ45 socket is
used for as DRED connection.
Connector pin definitions:
PIN
Assignment for inverter capable of
both charging and discharging
Pin assignments front view
1
DRM 5
81
RJ45 Socket
RJ45 Plug
1
8
2
DRM 6
3
DRM 7
4
DRM 8
5
RefGen
6
COM / DRM 0
7
/
8
/
Methods for asserting demand response modes:
Mode
RJ45 socket
Asserted by shorting pins
Requirement
DRM 0
5
6
Operate the disconnection device.
DRM 5
1
5
Do not generate power.
DRM 6
2
5
Do not generate at more than 50% of rated power.
DRM 7
3
5
Do not generate at more than 75% of rated power.
And sink reactive power if capable.
DRM 8
4
5
Increase power generation (subject to constraints from other active DRM)
Note: Only DRM 0 command supported.
The DRM connector is made of four components: sealing nut, sealing ring, threaded sleeve, plug.
Sealing Nut Sealing Ring Threaded Sleeve Shim
FIG. 7-16 Components of DRM Connector

8 Communication
14 /32
Procedure steps:
1) Route the network cable through threaded sleeve;
FIG. 7-17 Route the Network Cable
2) Prepare the RJ45 plug according to the line sequence;
FIG. 7-18 Prepare the RJ45 Plug
3) Insert the RJ45 plug kit to the DRM receptacle on the inverter, and tighten the locknut;
8 Communication
8.1 Inverter monitoring connection
The inverter can be monitored via a WiFi data logger, connect to the RS485 port.
More details for installation and operation methods please refer to the WiFi data logger user manual.
FIG. 8-1 Communication Port
9 CSI CloudPro APP
For more detailed information about this APP, please refer to ANNEX E: CSI CloudPro APP.
10 Commissioning Inverter
10.1 Electrical Inspection
1) Check PE connections with multi-meter:
To make sure all the bare metal surfaces of the inverter are grounded.
2) Check DC voltage value:

10 Commissioning Inverter
15 / 32
Check if the DC voltage of the PV string exceeds the allowable range.
3) Check the polarities of the DC voltage:
To make sure the DC polarities are correct.
4) Check the ground insulation of PV array with multi-meter:
Ensure the impedance value of ground insulation is more than 1MOhm.
10.2 Mechanical Inspection
1) Ensure the inverter is installed properly, fixed with a Wall-mounting bracket firmly, and the upper cover is installed
correctly.
2) Ensure the AC connectors are installed properly and fixed firmly.
3) Ensure the dust covers are sealed reliably which are used for the empty DC connectors.
4) Ensure all the cables are connected effectively, fixed firmly, and no visible damages to the insulation layers.
10.3 Start-up Inverter
After electrical and mechanical inspections, first turn on the AC main switch/breaker, then turn on the DC switch. The
inverter will start automatically when the DC input voltage meets the performance requirement of the utility grid.
Normally there will be three statuses during the operation (refer to the LED indications):
1) Waiting:
Conditions: The initial DC voltage of the PV strings is greater than the Min. DC input voltage, but is lower than the DC
start-up input voltage.
Inverter cannot start-up normally and cannot feed power into utility grid either.
2) Checking:
Conditions: The initial voltage of the PV strings exceeds the start-up DC input voltage of the inverter. Meanwhile both
the voltage and frequency of the utility grid are normal.
Inverter will check the feeding conditions immediately. If anything wrong during checking, inverter will switch to the
“Fault” mode.
3) Normal:
Conditions: All the checking results are normal.
Inverter will switch to “Normal” mode and feed power into utility grid.
The inverter may turn on and off continuously during the period of low or absent sunlight due to the shortage of
power generated by the PV modules. If such fault occurs frequently, please contact the maintenance personnel.
10.4 LED Indicators
No.
Operate states
LED Indicators
Flicker frequency
1
Wait
Green LED flicker
1s On，1s Off
2
Normal
Green LED always on
/
3
Error
Red LED always on
/
10.5 Switch off
DANGER
Never connect or disconnect the DC connectors under load.
Procedure:
1) Turn off the AC main switch.
2) Turn off the DC switch.
3) Check the inverter operating status.
4) Wait until LED indicator has gone out, which indicates the inverter has been shut down.

11 Daily Maintenance
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11 Daily Maintenance
DANGER
Risk of inverter damage or personal injury due to incorrect service!
Always keep in mind that the inverter is powered by dual sources: PV array and utility grid.
Before any service work, observe the following procedure.
1) Disconnect the inverter from the utility grid side first and then PV array.
2) Wait at least 5 minutes after shut down the inverter, for inner capacitors to discharge
completely.
3) Verify that no voltage and current existing with appropriate testing devices.
CAUTION
Keep non-related persons away!
A temporary warning sign or barrier must be posted to keep non-related persons away while
performing electrical connection and service work.
NOTICE
Risk of inverter damage if it is improperly serviced.
Use accessories and spare parts approved by the inverter manufacturer only. Never modify the
inverter or other components of the inverter. The loss of any or all warranty rights may follow if
otherwise.
NOTICE
Any malfunction that may impair the inverter safety operation must be repaired immediately
before the inverter is restarted.
Inverter contains no customer serviceable parts inside. Please contact local authorized personnel if
any service work is required.
Information
Servicing of the device in accordance with the manual should never be undertaken in the absence
of proper tools, test equipment or the more recent revision of the manual with has been clearly
and thoroughly understood.
Items
Methods
Period
System
clean
Check the temperature and dust of the inverter. Clean the inverter
enclosure.
Check the humidity and dust of the environment.
Meanwhile check whether the filter function of the air inlet is ok.
Six months to a year (it
depends on the dust contents
in air)
12 Trouble-shooting
When the inverter does not operate normally, we recommend the following actions for quick troubleshooting. Please
review the error list table carefully.
12.1 Warning
The different LED colors and flashing status identify the current operation statuses of the inverter. If the red color is
always on, it indicates the inverter fault. Usually the warnings can be cleared through an orderly shutdown / reset or a
self-corrective action performed by the inverter.
12.2 Errors
Error codes identify a possible equipment fault, or incorrect setting/ configuration. Any and all attempts to correct or
clear a fault must be performed by qualified personnel. Typically, the Errors code can be cleared once the cause or
fault is removed.
However, some of the (E) codes may cannot be cleared, in this case please contact the dealer or CSI Solar Co., Ltd. to
replace a new one. In the event of an earth fault, there will be a buzzer sound and a red light.
Errors as indicated in the table below:
Error Code
Error Message
Suggestion
F-100
Over temperature
1. Check heatsink for obstructions/ventilation.
2. Check the ambient temperature around the inverter.

12 Trouble-shooting
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F-101
High DC input voltage
1. Disconnect the DC switch, remove the DC connector, measure the voltage of the PV string, and
check if it exceeds the input-voltage specification of the inverter.
2. If exceed the specification, re-layout the PV module string.
3. If not exceed the specification, while the error still exits, please contact Customer Service.
F-103
Unconnected grid
1. Turn off DC switch, remove AC connector, measure the voltage between fire line and the zero
line, then check if it is consistent with the grid-connected specification of inverter.
2. Inconsistent, check if the AC main switch is connected, check if the power supply is normal
working.
3. Consistent, connect the AC connector, turn on the DC Switch.
4. If error message still exists, contact Customer service.
F-104
Inverter grid-connected
relay fault
Contact Customer service.
F-105
Grid frequency fault
1. If power grid frequency returns to normal, the inverter will restore the grid connection
automatically.
2. If error message still exists, contact Customer service.
F-106
Grid voltage fault
1. Turn off DC switch, remove AC connector, measure the voltage between fire line and the zero
line, then check if it is consistent with the grid-connected specification of inverter.
2. Inconsistent, check the grid layout.
3. Consistent, connect the AC connector, turn on DC Switch, inverter will restore the grid
connection automatically.
4. If error message still exists, contact Customer service.
F-107
DC component over range
1. Restart inverter.
2. If error message still exists, contact Customer service.
F-108
Current sensor fault
1. Wait until inverter restores normal work.
2. If error message still exists, contact Customer service.
F-109
Fail safe
1. Check the cable connection of CT or meter.
2. Restart inverter.
3. If error message still exists, contact Customer service.
F-110
Leakage current detection
unit fault
1. Check if there is any PV cable breakage.
2. Check if the PV modules grounding improperly.
3. Restart inverter.
4. If error message still exists, contact Customer service.
F-111
Leakage current fault
1. Check if PV strings grounding properly.
2. If error message still exists, contact Customer service.
F-112
DC insulation fault
1. Check if inverter grounding properly.
2. Check if the positive and negative poles of PV modules are short out to the PE cable.
3. Wait until inverter restores normal work.
4. If error message still exists, contact Customer service.
F-113
Leakage current detection
consistency error (Major)
1. Restart the inverter.
2. If error message still exists, contact Customer service.
F-114
Frequency detection
consistency error (Major)
1. Restart the inverter.
2. If error message still exists, contact Customer service.
F-115
Power grid voltage
detection consistency
error (Major)
F-116
Leakage current detection
consistency error (Minor)
F-117
Frequency detection
consistency error (Minor)
F-118
Power grid voltage
detection consistency
error (Minor)
F-123
Secondary memory failure
1. Restart the inverter.
2. If error message still exists, contact Customer service.
F-124
Clock failure