CanadianSolar CSI-75K-T480GL02-U User manual

This manual is subject to change without prior notification. Copyright is
reserved. Duplication of any part of this issue is prohibited without written
permission.
CANADIAN SOLAR INC.
Global Headquarters:
545 Speedvale Avenue, West Guelph, Ontario N1K 1E6, Canada
Tel: [phone]
Sales Inquiries Email: [e-mail]
Technical Inquiries Email: [e-mail]
CANADIAN SOLAR (USA) , INC.
North America Headquarters:
3000 Oak Road, Ste 400, Walnut Creek, CA 94596
Tel: [phone]
Sales Inquiries Email: [e-mail]
Technical Inquiries Email: [e-mail]
Please adhere to the actual products in case of any discrepancies in this user manual.
CSI GRID-TIED PV INVERTER (75-100)KW
INSTALLATION AND OPERATION MANUAL
VERSION 1.0 (2020.12)
CSI-75K-T480GL02-U & CSI-80K-T480GL02-U
CSI-90K-T480GL02-U & CSI-100K-T480GL02-U
www.csisolar.com

Important notes
.1.
● 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 Canadian Solar
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.
● Canadian Solar 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 Canadian Solar 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.
● Canadian Solar 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.

ContentsContents
1. Introduction
1.1 Product Description
1.2 Unpacking and storage
1.2.1 Storage
2. Important 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
5
6
7
7
7
8
8
10
10
10
11
12
13
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14
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3.3.1 Wall mounting
15
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5. Commissioning
5.1 Selecting the appropriate grid standard
5.1.1 Verifying grid standard for country of installation
31
31
31
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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
31
31
32
33
33
34
34
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5.4.2 AC configuration
34
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6. Normal operation
6.1 Start-up procedure
6.2 Shutdown procedure
35
35
35
6.3 Main Menu 36
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36
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6.4 Information ………………………………………………………………………………………………………………………
6.4.1 Lock screen
3.3.2 Rack mounting
3.4 Electrical Connections 17
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18
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3.4.1 Grounding
20
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3.4.2 Connect PV side of inverter
22
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3.4.3 Connect grid side of inverter
26
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4. Communication & Monitoring
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6.5.1 Set Time 38
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6.5.2 Set Address 38
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6.6 Advanced Info - Technicians Only 39
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6.6.1 Alarm Message 39
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6.6.2 Running Message 39
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6.6.3 Version 40
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6.6.4 Daily Energy
40
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6.6.5 Monthly Energy
40
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6.6.6 Yearly Energy
41
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6.6.7 Daily Records
41
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6.6.8 Communication Data
41
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6.6.9 Warning Message
41
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6.7 Advanced Settings - Technicians Only 42
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6.7.1 Selecting Standard 42
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6.7.2 Grid ON/OFF 44
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6.7.3 Clear Energy 44
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6.7.4 Reset Password 44
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6.7.5 Power control 45
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6.7.6 Calibrate Energy 45
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6.7.7 Special Settings
45
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6.7.8 STD Mode settings
46
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6.7.9 Restore Settings
56
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6.7.10 HMI Update
57
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6.7.11 External EPM Set
57
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6.7.12 Restart HMI
57
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6.7.13 Debug Parameter
58
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6.7.15 DSP Update 59
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6.7.16 Compensation Set 59
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6.7.17 I/V Curve
60
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6.7.14 Fan Test
58
4.1 RS485 communication 26
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4.2 Ethernet communication 28
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6.5 Settings 38
4.3 PLC communication(optional) 30
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7. Maintenance ……………………………………………………………………………………………………………………………………… 62
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7.1 Anti-PID Function 62
8. Troubleshooting ……………………………………………………………………………………………………………………………… 64
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8.1 Current Alarm 64
8.2 Alarm History 64
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8.3 Error Messages 64
9. Specifications …………………………………………………………………………………………………………………………………… 68
10. Appendices ……………………………………………………………………………………………………………………………………… 72
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7.2 Fan Maintenance 63
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6.8 AFCI function 61

.5.
1. Introduction
Figure 1.1 Front view
1.1 Product Description
1. Introduction
1.2 Unpacking and storage
Inverter packing list
Part #
1
2
Description
Inverter
Back plate
Number
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
.4.
Canadian Solar Three phase Inverters covert 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 model listed below:
CSI-75K-T480GL02-U, CSI-80K-T480GL02-U, CSI-90K-T480GL02-U, CSI-100K-T480GL02-U
Hexagon bolt M10*40
LED lights
LCD display
4 buttons
Figure 1.2 Bottom view
DC Switch AC output
DC input
AC Switch
Vent COM
COM
Manual

1. Introduction
.7..6.
2.1 Safety symbols
SAVE THESE INSTRUCTIONS – This manual contains important instructions for
Models CSI-75K-T480GL02-U, CSI-80K-T480GL02-U, CSI-90K-T480GL02-U and
CSI-100K-T480GL02-U that shall be followed during installation and maintenance
of the inverter.
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.
● 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.
1.2.1 Storage
If the inverter is not installed immediately, storage instructions and environmental conditions are below:
DONOTSTACK
MORETHANHIGH
2
2. Important Safety Instruction
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 75⁰C (167⁰F). 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..8.
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, the Grid Supply Main Switch (AC) must be turned off
before the DC Switch is turned off.
2.3 Notice for use
3.1 Environmental considerations
3.1.1 Select a location for the inverter
When selecting a location for the inverter, consider the following:
Figure 3.1 Distances required between inverters
NOTE
Nothing should be stored on or placed against the inverter.
3. Installation
2.4 Protection Circuitry and Controls
2. Important Safety Instruction
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.
20in
20in
20in
20in
40in
To meet relevant codes and standards, the Canadian Solar 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:
Islanding is a condition where the inverter continues to produce power even 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 inverters operating in parallel and the grid.
● The temperature of the inverter heat-sink can reach 167°F(75℃).
● The inverter is designed to work in an ambient temperature range between -25~140°F(-32~60℃).
● If multiple inverters are installed on site, a minimum clearance of 27.5 in should be kept
between each inverter and all other mounted equipment. The bottom of the inverter should be
at least 27.5 in above of the ground or floor (see Figure 3.1).
● 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.

≤15°
.11..10.
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.).
3.1.2.2 Vertical wall installation
This model of Canadian Solar inverter should be mounted vertically (90 degrees or
backwards 15 degrees) .
3. Installation 3. Installation
Figure 3.2 Recommended Installation locations
3.1.2.5 Flammable substances
Do not install near flammable substances. Maintain a minimum distance of three (3) meters
(10 feet) from such substances.
3.1.2.6 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 3.3 Handles used to move the inverter shown circled in red
3.1.2.4 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 3.3).
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 3.4).
3.1.2.3 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.
TYPE4X

3. Installation 3. Installation
.13..12.
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 3.4 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 3.5.
Figure 3.5 Inverter wall mounting
Φ11mm(0.43in)
Refer to figure 3.6 and figure 3.7 Inverter shall be mounted vertically.
The steps to mount the inverter are listed below.
1. Refer to Figure 3.6, 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. Make sure the bracket is horizontal. And the mounting holes (in Figure 3.6) 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 3.7 Install the inverter
4. Lift the inverter and hang it on the bracket, and then slide down to make sure they
match perfectly.
Figure 3.6 Inverter wall mounting
Bracket
Suitable mounting screws
Figure 3.8 Secure the inverter
5. Use supplied 2 M6x12 hex bolts to secure the inverter to the bracket.
1008mm(39.7in)
369mm(14.5in)
Torque:22.1-25.8 ft.lbs
Torque:1.5-2.2 ft.lbs

3. Installation 3. Installation
.15..14.
× ×
3.3.2 Rack mounting
1. Select a location for the inverter
With an NEMA4X 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,
Do not install the inverter in a location that you accidentally touch.
Do not install the inverter in a place where it is stored in a flammable or explosive material.
2. Installation angle
Please install the inverter vertically. If the inverter cannot be mounted vertically, it may
be tilted backward to 15 degrees from vertical.
√
Vertical ≤15°
√
Backward
Figure 3.9 Correct installation Angle
Figure 3.10 Wrong installation Angle
Inverted
Leaning
forward
The steps to mounted to the rack are listed below:
12.5mm
3. Install mounting plate
1) Remove the bracket and fasteners from the packaging. Mark the position for hole,
drilling according to the hole positions of the bracket.
Figure 3.11 Mark the position for hole
2) Drill the marked holes. It is recommended to apply anti-corrosive paint at the hole for
corrosion protection.
Figure 3.12 Drill hole

3. Installation 3. Installation
.17..16.
4) Lift the inverter above the bracket and then slide down to make sure they match perfectly.
Figure 3.13 Construction bolt
Figure 3.14 Mount the inverter
3.4 Electrical Connections
The electrical connection of the inverter must follow the steps listed below:
1. Switch the Grid Supply Main Switch (AC) OFF.
2. Switch the DC Isolator OFF.
3. Connect the inverter to the grid.
4. Assemble PV connector and connect to the Inverter.
Inverter design uses PV style quick-connect terminal. The top cover needn't be opened
during DC electrical connection. The labels located the bottom of the inverter are described
below in table 3.1. All electrical connections are suitable for local or national standard.
Table 3.1 Electrical connections
Parts Connection Cable size Torque
DC terminal
Ground terminal
Grid terminal
RS-485 terminal
RJ45 terminal
COM terminal
PV strings
AC ground
Grid
Communication cable
Communication cable
Wi-Fi/Cellular stick
12-10 AWG
2-4/0 AWG
(Max 185mm2)
2-4/0 AWG
(Max 185mm2)
22-12 AWG
Network cable
NA
7.4-8.9 ft.lbs
7.4-14.7 ft.lbs
0.44 ft.lbs
NA
NA
NA
3) Align the mounting plate with the holes, Insert the combination bolt (M10X40)through the
mounting plate into the hole. Secure the bracket to the metal frame firmly with the supplied
fastener. Torque the nut to 25.8 ft.lbs.
5) Use supplied 2 M6x12 hex bolts to secure the inverter to the bracket (see figure 3.8).

3. Installation 3. Installation
.19..18.
D
C
Grounding screw
Figure 3.16 Strip wire
Important:
After crimping the terminal to the wire, inspect the connection to ensure the
terminal is solidly crimped to the wire.
5) Remove the screw from the heat sink ground point.
Figure 3.17 Fixed cable
For improving anti-corrosion performance, after ground cable installed,
apply anti oxidizing grease.
Important:
4) Insert the stripped wire into the OT terminal crimping area and crimp with a hydraulic
crimp tool. (see Figure 3.16).
3.4.1 Grounding
To effectively protect the inverter, two grounding methods must be performed.
Connect the AC grounding cable (Please refer to section 3.4.3).
Connect the external grounding terminal.
1) It is recommended to use copper wire for the chassis ground. Either solid conductor
or stranded wire is acceptable. Refer to local code standard for wire sizing.
2) Attach OT terminal: M10.
To connect the grounding terminal on the heat sink, please follow the steps below:
A
B
Important:
3) Strip the ground cable insulation to a suitable length(see Figure 3.15).
Figure 3.15 Suitable length
Important:
For multiple inverters in parallel , all inverters should be connected to the
same ground point to eliminate the possibility of a voltage potential existing
between inverter grounds.
B (insulation stripping length) is 2mm-3mm longer than A (OT cable
terminal crimping area) 2mm-3mm.
6) Connect the grounding cable to the grounding point on the heat sink, and tighten the
grounding screw, Torque is 7.4-8.9 ft.lbs(see figure 3.17).

3. Installation 3. Installation
.21..20.
Figure 3.22 Multimeter measurement Figure 3.23 Connect the DC
Connectors to the Inverter
Figure 3.20 Crimp the contact pin to the wire Figure 3.21 Connector with Cap nut Screwed on
Requirements for the PV modules per MPPT input:
● All PV modules must be of the same type and power rating.
● All PV modules must be aligned and tilted identically.
● The open-circuit voltage of the PV array must never exceed the maximum input voltage of
the inverter, even at the coldest expected temperature. (see Section 9 “Specifications” for
input current and voltage requirements)
● Each string connected to a single MPPT must consist of the same number of series-
connected PV modules.
Crimping plier
+
-
Please use appropriate DC cable for PV system.
The steps to assemble the DC connectors are listed as follows:
1. Strip off the DC wire for about 7mm, Disassemble the connector cap nut.
(see Figure 3.18)
3. Crimp the contact pin to the wire using a proper wire crimper. (see Figure 3.20)
2. Insert the wire into the connector cap nut and contact pin. (see Figure 3.19)
3.4.2 Connect PV side of inverter
Please see table 3.1 for acceptable wire size for DC connections.Wire must be copper only.
WARNING
DO NOT connect the PV array positive or PV array negative cable to ground.
This can cause serious damage to the inverter!
WARNING
MAKE SURE the polarity of the PV array output conductors matches
the DC- and DC+ terminal labels before connecting these conductors
to the terminals of the inverter.
WARNING
Before connecting the inverter, make sure the PV array open circuit
voltage is within the limit of the inverter. Otherwise, the inverter could
be damaged.
5. Measure PV voltage of DC input with multimeter, verify DC input cable polarity
(see figure 3.22), and ensure each string voltage is in range of inverter operation.
Connect DC connector with inverter until hearing a slight clicking sound indicating
successful connection. (see figure 3.23)
Figure 3.18 Disassemble the Connector Cap nut Figure 3.19 Insert the Wire into the
Connector Cap nut and contact pin
4. Insert crimped pin into connector housing fully until it clicks, and tighten the cap tun
to 2.2-3 ft.lbs (see figure 3.21).
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 as it will damage
the inverter and even leads to a fire disaster.
The correct actions are:
*Use a clip-on ammeter to measure the DC string current.
*If it is above 0.5A, please wait for the solar irradiance reduces until the
current decreases to below 0.5A.
*Only after the current is below 0.5A, you are allowed to turn off the DC
switches and disconnect the PV strings.
Please note that any damages due to wrong operations are not covered in
the device warranty.

3. Installation 3. Installation
.23..22.
3.4.3 Connect grid side of inverter
1. Connect the three (3) AC conductors to the three (3) AC terminals marked “L1”, “L2” and “L3”.
Refer to local code and voltage drop tables to determine the appropriate wire size and type.
2. Connect the grounding conductor to the terminal marked “PE” (protective earth, the ground
terminal).
WARNING
An over-current protection device must be used between the inverter and
the grid.
NOTE
Use AL-CU transfer (bi-metallic) terminal oranti-oxidantgreasewith
aluminumcablesandterminals.
CSI-75K-T480GL02-U
CSI-80K-T480GL02-U
CSI-90K-T480GL02-U
CSI-100K-T480GL02-U
Table 3.2 Rating of grid OCPD
Inverter Rated
voltage(V)
Rated output
current (Amps)
Current for protection
device (A)
90.2
96.2
108.3
120.3
480
480
480
480
3.4.3.1 Connecting the inverter to the utility grid
All electrical installations must be carried out in accordance with the local standards and
the National Electrical Code® ANSI/NFPA 70 or the Canadian Electrical Code® CSA C22.1.
The AC and DC electric circuits are isolated from the enclosure. If required by section 250
of the National Electrical Code®, ANSI/NFPA 70, the installer is responsible for grounding
the system.
The grid voltage must be within the permissible range. The exact operating range of the
inverter is specified in Section 9 “Specifications”.
3.4.2.1 DC connection high voltage danger notice
CAUTION
RISK OF ELECTRIC SHOCK
Do not touch an energized DC conductor. There are high voltages present when PV modules
are exposed to light causing a risk of death due to an electric shock from touching a DC
conductor!
Only connect the DC cables from the PV module to the inverter as described in this manual.
CAUTION
POTENTIAL DAMAGE TO THE INVERTER DUE TO OVERVOLTAGE
The DC input voltage of the PV modules must not exceed the maximum rating of the inverter.
(see Section 9 “Specifications”)
Check the polarity and the open-circuit voltage of the PV strings before connecting the DC
cables to the inverter.
Confirm proper string length and voltage range before connecting DC cable to the inverter.
NOTE
The AC output neutral is not bounded to the ground.
The neutral wire is not necessary for the installation.
Over-Current Protection Device (OCPD) for the AC side
To protect the inverter's AC connection line, we recommend installing a device for protection
against over-current and leakage, with the following characteristics noted in Table 3.2:
125
125
150
150

3. Installation
.25..24.
3.4.3.2 Wiring procedure
3. Installation
CAUTION
RISK OF ELECTRIC SHOCK. Prior to starting the wiring procedure, ensure
that the three-pole circuit breaker is switched off and cannot be reconnected.
NOTE
Damage or destruction of the inverter's electronic components due to
moisture and dust intrusion will occur if the enclosure opening is enlarged.
CAUTION
Risk of fire if two conductors are connected to one terminal. If a
connection of two conductors to a terminal is made, a fire can occur.
NEVER CONNECT MORE THAN ONE CONDUCTOR PER TERMINAL.
NOTE
Use M10 crimp terminals to connect to the inverter AC terminals.
Figure 3.25 Strip AC cable
PE
L
｝
S2 S1
NOTE:
S2 (insulation stripping length) is 2mm-3mm longer than S1.
(OT cable terminal crimping area)
3) Leave the AC breaker disconnected to ensure it does not close unexpectedly.
4) Remove the 4 screws on the inverter junction box and remove the junction box
cover (Figure 3.27).
2) Strip the insulation of the wire past the cable crimping area of the OT terminal,
then use a hydraulic crimp tool to crimp the terminal. The crimped portion of the terminal
must be insulated with heat shrinkable tube or insulating tape.
1) Strip the end of AC cable insulating jacket about 11.8 inch then strip the end of each wire.
(as shown in figure 3.25)
The steps to assemble the AC grid terminals are listed as follows:
NOTE:
If chosing aluminum alloy cable, you must use copper-aluminum transfer
terminal or anti-oxdant grease in order to avoid oxidation of the connection
from direct contact between aluminum and copper. (Please select a copper
aluminum transfer terminal based on your cable specification).
Figure 3.26 Copper aluminum transfer terminal
Figure 3.27 Remove the junction box cover
5) Insert the cable through the nut, sheath, and AC terminal cover. Connect the cable to
the AC terminal block in turn, using a socket wrench.Tighten the screws on the terminal block.
The torque is (as shown in Figure 3.28).7.4-14.7 ft.lbs
Figure 3.28 wiring
Copper terminal of cable
nut
PE

4. Comm. & Monitoring 4. Comm. & Monitoring
.27..26.
Monitoring system for multiple inverters
Multiple inverters can be monitored through RS-485 and Ethernet daisy chain configuration.
Internet
Datalogger
PC monitoring
PV Strings
PV Strings
PV Strings
Inverter
Inverter
Inverter
Figure . Multiple inverter monitoring system4 1
DC
RS485/Ethernet
There are 5 communication terminals on Canadian Solar inverter. COM1 is a4-pin connector
reserved for Canadian Solar WiFi/Cellular datalogger. COM2 and COM3 are RS485 connection
between inverters and both RJ45 and Terminal block are provided for use .
COM4 and COM5 are the Ethernet connection via RJ45.
RS-485 communication supports two connections methods: RJ45 connectors/ Terminal board
1. RS-485 communication through RJ45 connector
RJ45 port connection (See figure 4.2).
CAT 5E outdoor rated (cable outer diameter<9mm, internal resistance≤1.5Ω/10m) and
shielded RJ45 connectors are recommended.
4.1 RS485 communication
485-IN
485-OUT
Figure 4.2 RJ45 port
Ethernet IN
Ethernet OUT
Figure 4.3 Strip the insulation layer and connect to RJ45 plug
Correspondence between the
cables and the stitches of plug
Pin 1: white and orange ; Pin 2: orange
Pin 3: white and green； Pin 4: blue
Pin 5: white and blue； Pin 6: green
Pin 7: white and brown； Pin 8: brown
Pin 1 with 4 and 2 with 5 are
used for communication connection
Pin 1 and 4 are connected with RS485+A
Pin 2 and 5 are connected with RS485 - B
1--8
RJ45 plug RJ45terminal
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
R S 4 8 5 + A R S 4 8 5 - B
Use the network wire stripper to strip the insulation layer off the communication cable.
Using the standard wire sequence referenced in TIA/EIA 568B, separate the wires in the cable.
Use a network cable tool to trim the wire. Flatten the wire in the order shown in figure 4.3.
2. RS-485 communication through terminal board.
Figure 4.4
124 3
The cross sectional area of the conductor wire for terminal board connection should be
0.2-1.5mm.
The outer diameter of the cable may be 5mm-10mm.
NO.Port definition Description
1
2
3
4
RS485A1,RS485 differential signal+
RS485B1,RS485 differential signal-
RS485A2,RS485 differential signal+
RS485B2,RS485 differential signal-
RS485A1 IN
RS485B1 IN
RS485A2 OUT
RS485B2 OUT
Connection of Terminal board.
a. Strip the insulation and shield to a suitable length. Use diagram below as a guide.
(in Figure 4.5).
b. Remove the cap nut from the waterproof cable glands labeled at the bottom of the inverter.
Remove the plug from the fitting. (in Figure 4.6).

.29..28.
4. Comm. & Monitoring 4. Comm. & Monitoring
8mm
30mm
Figure 4.5 Figure 4.6
f. Please insert terminal board into terminal block, then will be clamped automatically.
c. Insert the cable through the cap nut for each port. COM2(RS485 IN) COM3(RS485 OUT).
d. Pull down the terminal block on user interface board(See Figure 4.4).
e. Firstly insert cable into terminal board, then tighten the screws (dotted area) clockwise
with slotted screwdriver; if user need to pull out cable, screws rotates anticlockwise with
slotted screwdriver(See Figure 4.4).
4.2 Ethernet communication
≈
Inverter 1 Inverter 2 Inverter n
Ethernet IN | OUT
Ethernet
Router
Internet
Ethernet IN | OUT Ethernet IN | OUT
Figure 4.7
1.Canadian Solar Monitoring Platform
After the daisy chain connection is finished, please use the SN/QR code on the board to
register the system on Canadian Solar monitoring website or APP.
2. Modbus TCP
The Ethernet module has a default TCP protocol.
After the daisy chain connection is finished, the LAN module addresses are assigned by the
DHCP automatically. The port is self-defined, default is 30003.
3. Modbus RTU (Transparent)
Connect a PC or Laptop directly to the Ethernet port of the LAN module or switch/
router. Enter the corresponding IP of the Ethernet module into the PC browser under
the same network. (The IP can be acquired in the router DHCP list).
Select the working mode as "Local+Remote" . Select the protocol type as
"Transparent". The port is self-defined, default is 30003. Assign an IP address in the
address field. Save. NOTE: If not connected to a switch, the default IP address of the
LAN module is 10.10.100.254.
4. Ethernet Module LED Indicators
D1 Red LED: Indicator between module and inverter.
Constantly ON indicates normal.
Blinking indicates it is trying to connect.
OFF indicates connection failed.
D2 Red LED: Indicator between module and server.
Constantly ON indicates normal.
Blinking indicates it is trying to connect.
OFF indicates connection failed.
D3 Green LED: Module power light.
Constantly ON indicates normal power supply status.
OFF indicates abnormal power supply status.
System
Work mode
Network
Manual
Restart
Reset
Upgrade
Work mode settings
Work mode
Protocol type
IP address of the device
Port of the device
Local + Remote
ModBus TCP
192.168.3.50
30003
Save
Figure 4.8
Figure 4.9
Rj45 connectors are required for Ethernet communication. Two modes are supported: Data
logger (to Canadian Solar Monitoring Platform)and Mod bus TCP protocol.
The inverter slave address must be set to 01.
CAT 5E outdoor rated (cable outer diameter<9mm, internal resistance≤1.5Ω/10m) and shielded
RJ45 connectors are recommended, Single length is not recommended to exceed 80m.
If the product is connected to a local network through a router, the product will be
assigned an IP address automatically, by the DHCP server(Wait up to about 5 minutes).
Daisy chain is required for multiple inverter communication through ethernet as shown below.

5. Commissioning
.31..30.
5.1 Selecting the appropriate grid standard
5.1.1 Verifying grid standard for country of installation
Canadian Solar inverters are used worldwide and feature preset standards for operating on
any grid. Although the grid standard is set at the factory, it is essential the grid standard be
verified for the country of installation before commissioning.
The menu for changing the grid standard or for creating a custom standard is accessible as
described in Section 6.7 and below.
WARNING
Failure to set the correct grid standard could result in improper operation
of the inverter, inverter damage or the inverter not operating at all.
5.2 Changing the grid standard
5.2.1 Procedure to set the grid standard
NOTE
This operation is for service technicians only. The inverter is customized
according to the local grid standard before shipping. There should be no
requirement to set the standard.
NOTE
The “User-Def” function can only be used by the service engineer.
Changing the protection level must be approved by the local utility.
1). From the main screen on the display, select ENTER. There are 4 sub-menu options,
use the UP/DOWN arrows to highlight ADVANCED SETTINGS. Press enter to select.
2). The screen will show that a password is required. The default password is "0010",
press the DOWN key to move cursor, press the UP key to change the highlighted digit.
Figure 5.1
Information
Settings
Figure 5.2
YES=<ENT> NO=<ESC>
Password:0000
4. Comm. & Monitoring
4.3 PLC communication(optional)
Canadian Solar PLC CCO is applied in PV systems to achieve power line communication.
It doesn’t require extra communication cable which can reduce the cost on the
communication system and promote communication reliability and efficiency.
Canadian Solar string inverters integrated with PLC communication module PLC STA can
conduct power line communication through AC power cable and communicate with PLC CCO.
It uses the isolation coupling circuit to isolate low-frequency AC power and protect the
internal board. Meanwhile, it can conduct bi-directional PLC signal and RS485 signal
conversion and communicate with corresponding datalogger. By using power line
communication through PLC CCO, it can save the RS485 communication cables within
the PV arrays and reduce the cost on communication system.
NOTE:
Please refer to the quick installation manual of Canadian Solar PLC CCO
device for detailed PLC communication configurations.

5. Commissioning
.33..32.
2. Measure the voltage present between the positive and negative wires of each string.
If the open circuit voltage of the string is near the maximum value accepted by the inverter,
verify the string length. Low ambient temperatures cause an increase in the string voltage
causing potential damage to the inverter.
3. Check the polarity of the string. All digital meters have a negative (“-“) indicator that
indicates when a voltage is negative; in this case a string connected in reverse polarity.
WARNING
Input voltages higher than the maximum value accepted by the inverter
(see “Specifications” in Section 9) may damage the inverter.
Although Canadian Solar inverters feature reverse polarity protection,
prolonged connection in reverse polarity may damage these protection
circuits and/or the inverter.
5.4.1.2 Leakage to ground
Measure leakage to ground to check for a DC ground fault.
5. Commissioning
5.4 Preliminary checks
WARNING
High Voltage.
AC and DC measurements should be made only by qualified personnel.
5.4.1 DC configuration
5.4.1.1 VOC and Polarity
To measure the open circuit voltage (VOC) and polarity of the individual strings, perform
the following steps:
5.4.1.1.1 Check string voltage
1. Connect the positive lead of the meter to the positive string cable of the string under test.
Connect the negative lead of the meter to the negative string cable of the string under test.
Verify DC configuration by noting the number of panels in a string and the string voltage.
Measure VOC, and check string polarity. Ensure both are correct and VOC is in specification.
3). Use the UP/DOWN keys to highlight the SELECT STANDARD option. Press enter to
select.
Figure 5.4
4). Select the grid standard for the country of installation.
YES=<ENT> NO=<ESC>
Standard:UL-480V
Press the UP or DOWN key to select the standard. Press the ENTER key to confirm the setting.
Press the ESC key to cancel changes and return to the previous menu.
5.3 Setting a custom grid standard
WARNING
● Failure to set the correct grid standard could result in improper operation
of the inverter, inverter damage or the inverter not operating at all.
Only certified personnel should set the grid standard.●
Only set the grid configuration that is approved by your location and ●
national grid standards.
1). Please refer to section 6.7 “Advanced Settings” for procedures to create a custom grid
configuration for User-Def menu option.
Figure 5.3
Select Standard
Grid ON/OFF
UL-480V，R21P3-48, ISONE480 are available for U.S.

6. Normal operation
.35..34.
5. Commissioning
6.1 Start-up procedure
To start-up the inverter, it is mandatory that the steps below are followed in the exact order
outlined.
1). Ensure the commissioning checks in Section 5 have been performed.
2). Switch the AC switch ON.
3). Switch the DC switches ON one at a time. If the PV array (DC) voltage is higher
than the inverter start-up voltage, the inverter will turn on. The red DC POWER LED
and LCD will be continuously lit.
4). Canadian Solar inverters are powered from the DC side. When the inverter detects DC
power that is within start-up and operating ranges, the inverter will turn on. After turn-
on, the inverter will check internal parameters, sense and monitor AC voltage, hertz
rate and the stability of the supply grid. During this period, the green OPERATION LED
will flash and the LCD screen will show INITIALIZING. This tells the operator that the
inverter is preparing to generate AC power.
5). After the locally mandated delay (300 seconds for IEEE-1547 compliant inverters), the
inverter will start generating AC power. The green OPERATION LED will light
continuously and the LCD screen will show GENERATING.
CAUTION
The inverter's surface temperature can reach up to 75℃ (167⁰ F). To
avoid risk of burns, do not touch the surface when the inverter is in
the operational mode. Additionally, the inverter must be installed
out of the reach of children.
6.2 Shutdown procedure
To stop the inverter, it is mandatory that the steps below are followed in the exact order outlined.
1). Switch AC switch OFF.
2). Wait approximately 30 seconds (during this time, the AC side capacitors are dissipating
energy). If the inverter has DC voltage above the start-up threshold, the red POWER
LED will be lit. Switch the DC switches OFF.
3). Confirm all LED's switch OFF (~one (1) minute).
CAUTION
Although the inverter DC disconnect switches are in the OFF position and all
the LED's are OFF, operators must wait five (5) minutes after the DC power
source has been disconnected before opening the inverter cabinet. DC
side capacitors can take up to five (5) minutes to dissipate all stored energy.
5.4.1.2.1 Detection of leakage to ground
Canadian Solar inverters are transformer-less and do not have an array connection to ground.
Any measurement of a fixed voltage between ground and either the positive or negative string
wiring indicates a leakage (ground fault) to ground and must be corrected prior to energizing
the inverter or damage to the inverter may result.
To measure leakage to ground, perform the following steps:
1. Ensure that neither negative nor positive DC conductors are connected to the ground strip.
2. Measure each string positive connection to ground.
3. Measure each string negative connection to ground.
4. Verify the voltage is “floating”, not a consistent voltage to ground. Make sure you notice the
units of the measurement. mV is not the same as V.
Measure VAC and verify voltage is within local grid standards.
1). Measure each phase to ground (L-G).
5.4.2.1 Measure VAC and frequency
2). Measure phases to the other phases in pairs (L-L). PH A to PH B, PH B to PH C and
PH C to PH A.
3). If the meter is equipped, measure the frequency of each phase to ground.
4). Ensure each measurement is within local grid standards and the inverter specifications
as noted in Section 9 “Specifications”.
A phase rotation test is recommended to ensure the phases have been connected in the
appropriate order. Canadian Solar inverters do not require aspecific phase rotation connection.
However, the local utility may require a specific phase rotation or a record of the phase
configuration of the installation.
5.4.2.2 Phase rotation test
Verify AC configuration.
5.4.2 AC configuration
Verify DC connections.
Lightly tug on each DC cable to ensure it is properly connected to the inverter.
5.4.3 DC Connections
Verify AC connections.
1. Lightly tug on each AC cable to ensure it is fully captured in the terminal.
2. Visually check for any stray strands that may not be inserted in the terminal.
3. Check to ensure the terminal screws are the correct torque.
5.4.4 AC Connections

6. Normal operation6. Normal operation
.37..36.
I_DC01: +05.0A
I_DC02: +04.9A
...
I_DC20: +05.2A
VPV_Total: Shows input voltage total.
IPV_Total: Shows input current total.
Table 6.1 Information list
Status: Generating
Power: 1488W
Grid Frequency
F_Grid 50.06Hz
Total Energy
0258458 kwh
This Month: 0123kwh
Last Month: 0123kwh
Today: 15.1kwh
Yesterday: 13.5kwh
10 sec
10 sec
10 sec
10 sec
10 sec
10 sec
Status: Shows instant status of the Inverter.
Power: Shows instant output power value.
F_Grid: Shows the grid's frequency value.
Total generated energy value.
This Month: Total energy generated this month.
Last Month: Total energy generated last month.
Today: Total energy generated today.
Yesterday: Total energy generated yesterday.
Display Duration Description
Inverter SN
00000000000000
10 sec
Display series number of the inverter.
10 sec
V_C: Shows the grid's voltage value.
I_C: Shows the grid's current value.
10 sec V_A: Shows the grid's voltage value.
I_A: Shows the grid's current value.
Rea_Power: 000Var
App_Power: VA 10 sec Rea_Power: Shows the reactive power of the inverter.
App_Power: Shows the apparent power of the inverter.
Work Mode: Volt-watt
DRM NO.:08 10 sec
10 sec
Work Mode: Shows current working mode.
DRM NO.: Shows DRM Number.
I_DC01 : Shows input 01 current value.
I_DC02 : Shows input 02 current value.
...
I_DC20 : Shows input 20 current value.
VPV_Total: 1000.0V
IPV_Total: +99.0A
V_A: 345.7V
I_ A: 109.0A
V_C: 345.0V
I_ C: 109.8A
In normal operation, LCD screen alternatively shows inverter power and operation status
(see Figure 6.1). The screen can be scrolled manually by pressing the UP/DOWN keys.
Pressing the ENTER key gives access to Main Menu.
5 sec
Start
Power 110000W
01-01-2019 12:04
Status: Generating
01-01-2019 12:04
Information
Settings
Advanced Info.
Advanced settings
UP/DOWN
UP/DOWN
UP/DOWN
UP/DOWN or
auto-scroll
(10 sec)
Pressing the
ENTER key
gives access to
the main menu.
Pressing the
ESC key
calls back the
previous menu.
Main Menu
Figure 6.1 Operation Overview
6.3 Main Menu
There are four submenus in the Main Menu (see Figure 6.1):
1. Information
2. Settings
3. Advanced Info.
4. Advanced Settings
The Canadian Solar three Phase Inverter main menu provides access to operational
data and information. The information is displayed by selecting "Information" from the
menu and then by scrolling up or down.
6.4 Information