CanadianSolar CSI-50K-T400GL03-E User manual

www.csisolar.com
CSI Solar Co., Ltd.
199 Lushan Road, SND, Suzhou, Jiangsu, China, 215129
Version 1.0, Release Date: 08,2021
Global Headquarters
CSI Solar Co., Ltd.
199 Lushan Road, SND, Suzhou, Jiangsu, China, 215129
P [phone]
F [phone]
Sales Inquiries Email: [e-mail]
Customer Support Email: [e-mail]
Europe, Middle East & Africa
Canadian Solar EMEA GmbH
LandsbergerStraße 94, 80339 Munich, Germany
P [phone]
F [phone]
Sales Inquiries Email: [e-mail]
Customer Support Email: [e-mail]
Australia
Canadian Solar MSS (Australia) Pty Ltd
44 Stephenson St, Cremorne VIC 3121, Australia
P +61 ( 3 ) 860 918 44
Sales Inquiries Email: [e-mail]
Customer Support Email: [e-mail]
South East Asia
101 Thompson Road #15-03 United Square, Singapore 307591
P [phone]
F [phone]
Sales Inquires Email: [e-mail]
Customer Support Email: [e-mail]
Latin America
Canadian Solar Brazil
Avenida Roque Petroni Junior, 999, 4º andar Vila Gertrudes,
São Paulo, Brasil,CEP 04707-910
P [phone]
Sales Inquiries Email:[e-mail]
Customer Support Email: [e-mail]
Please adhere to the actual products in case of any discrepancies in this 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.
CSI GRID-TIED PV INVERTER
INSTALLATION AND OPERATION MANUAL
CSI-50K-T400GL03-E | CSI-60K-T400GL03-E

ContentsContents
1. Introduction
1.1 Product Description
1.2 Unpacking and storage
1.2.1 Storage
2. Safety instructions
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
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9
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10
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12
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13
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3.3.1 Wall mounting
14
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7.2.1 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
5. Commissioning
5.1 Selecting the appropriate grid standard
5.1.1 Verifying grid standard for country of installation
35
35
35
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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
5.4.1 DC Connections
5.4.2 AC Connections
5.4.3 DC configuration
35
35
36
37
37
37
37
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5.4.4 AC configuration 38
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6. Start and Shutdown
6.1 Start-up procedure
6.2 Shutdown procedure
39
39
39
7.1 Main Menu 40
40
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7.2 Information ………………………………………………………………………………………………………………………
4.1 Inverter monitoring connection 28
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7. Normal operation 40
4.2 DRM Connection/ Logic Interface Connection …………………………………………………… 31
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7.3.1 Set Time 42
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7.3 Settings 42
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7.3.2 Set Address 42
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7.4 Advanced Info - Technicians Only 43
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7.4.1 Alarm Message 43
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7.4.2 Running Message 43
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7.4.3 Version 44
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7.4.4 Daily Energy 44
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7.4.5 Monthly Energy 44
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7.4.6 Yearly Energy
45
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7.4.7 Daily Records
45
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7.4.8 Communication Data
45
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7.4.9 Warning Message
45
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7.5 Advanced Settings - Technicians Only 46
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7.5.1 Selecting Standard 46
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7.5.2 Switch ON/OFF 47
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7.5.3 Clear Energy 48
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7.5.4 Reset Password 48
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7.5.5 Power control 49
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7.5.6 Calibrate Energy 49
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7.5.7 Special Settings
49
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7.5.8 STD Mode settings
50
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7.5.9 Restore Settings
50
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7.5.10 HMI Update
51
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7.5.11 Internal EPM Set
51
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7.5.13 Restart HMI
55
55
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7.5.15 DSP Update 56
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7.5.16 Compensation Set 56
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7.5.17 I/V Curve
57
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7.5.14 Fan Test
56
8. Maintenance ……………………………………………………………………………………………………………………………………… 59
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8.2 Fan Maintenance 60
9. Troubleshooting ……………………………………………………………………………………………………………………………… 61
10. Specifications …………………………………………………………………………………………………………………………………… 64
59
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7.6 AFCI function 58
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7.6.1 Enable the AFCI function 58
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7.6.2 Arc Fault 58
4.3 Meter Connection …………………………………………………………………………………………………………… 32
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7.5.12 External EPM Set
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8.1 Night Time PID-Recovery Function
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11. Declarations 71
71
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11.1 REACH Declaration
74
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11.2 CE and RoHS Declaration

.5.
1. Introduction
1.1 Product Description
1. Introduction
1.2 Unpacking and storage
.4.
4 buttons
Figure 1.1 Front view
Figure 1.2 Bottom view
AC output
DC input
DC Switch
LED lights
LCD display Inverter x1 Back plate x1
When you receive the inverter, please ensure that all the parts listed below are included:
If anything is missing, please contact your local Canadian Solar distributor.
Cross screws(M4*14) x4
Cross Recessed
Hexagon Bolt(M6*12) x2
User manual x1
Manual
AC terminal cover x1
4pin COM Port
16pin COM Port
16pin COM Connector x1
Unlocking tool x1
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-50K-T400GL03-E, CSI-60K-T400GL03-E
DC connectors
50K x10, 60K x12

1. Introduction
.7..6.
2.1 Safety symbols
Improper use may result in electric shock hazards or burns. This product manual contains
important instructions that are required to be followed during installation and maintenance.
Please read these instructions carefully before use and keep them in an easily locatable place
for future reference.
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 - 70℃ and humidity should be between 0 to 95%, 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
Figure 1.3
2
2. Safety Instructions
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.

.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.
CAUTION
The inverter's surface temperature can reach up to 75 . 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.
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.
5). The inverter can only be used for industrial.
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
2. Safety Instructions
3.1 Environmental considerations
3.1.1 Select a location for the inverter
When selecting a location for the inverter, consider the following:
● The temperature of the inverter heat-sink can reach 75℃.
● The inverter is designed to work in an ambient temperature range between -25 to 60℃.
● If multiple inverters are installed on site, a minimum clearance of 500mm should be kept between
each inverter and all other mounted equipment. The bottom of the inverter should be at least 500mm
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.
Figure 3.1 Distances required between inverters
NOTE
Nothing should be stored on or placed against the inverter.
3. Installation
To meet relevant codes and standards, the Canadian Solar three phase inverter line is
equipped with protective circuitry and controls.
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.
2.4 Protection Circuitry and Controls
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.
1000mm
500mm
500mm
500mm
800mm

.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 10) 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.
≤15°
IP66
≥15°

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
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 expansion bolt(M10*90) based on the hole
diameter of bracket using a precision drill keeping the drill perpendicular to the wall.
Max depth is 90mm.
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.
3.3.1 Wall mounting
3. Use the suitable mounting screws to attach the bracket on the wall.
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
Figure 3.8 Fix the inverter
5. . Use screws in the packaging to fix the inverter to the mount bracket
unit:mm
Mounting Bracket
Mounting screws
Torque：30-35NM
636
272 44.5
24
11
Φ11
Torque：2-3NM

3. Installation 3. Installation
.15..14.
3.3.2 Rack mounting
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.
Figure 3.10 Wrong installation Angle
The steps to mounted to the rack are listed below: 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
1. Select a location for the inverter
With an IP66 protection rating,the inverter can be installed both outdoors and indoors.
Figure 3.9 Correct installation Angle
Vertical
Backward
Leaning
forward
≤15°
× ×
12 . 5 m m
√ √
Upside
Down

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) Align the mounting plate with the holes, Insert the hexagon bolt (M10X40)through the
mounting plate into the hole. Secure the bracket to the metal frame firmly.
Torque the nut to 36FT-LB (35NM).
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 connection symbols
Parts Connection Cable size Torque
DC terminal
Ground terminal
Grid terminal
16pin COM Port
4pin COM Port
PV strings
AC ground
Grid
Communication cable
Datalogging Stick
4-6mm²
25-50mm²
35-70mm²
0.75-3mm²
NA
0.4-0.6N.m
NA
NA
10-20N.m
5-6N.m

3. Installation 3. Installation
.19..18.
D
C
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 silicone or paint.
Important:
6) Connect the grounding cable to the grounding point on the heat sink, and tighten the
grounding screw, Torque is 5-6Nm(see figure 3.17).
4) Insert the stripped wire into the OT terminal crimping area and use the hydraulic
clamp to crimp the terminal to the wire (see Figure 3.16).
3.4.1 Grounding
2) Prepare OT terminals: M10.
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) Prepare the grounding cable: recommend to use the outdoor copper-core cable. The
grounding wire should be at least half size of the hot wires.
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) .
Grounding Screw
Torque：5-6NM

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 10 “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.
+
-
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.
3. Crimp the contact pin to the wire using a proper wire crimper.
2. Insert the wire into the connector cap nut and contact pin.
4. Insert metal connector into top of connector, and tighten nut with torque 3-4 Nm.
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.
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
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.
Crimping plier
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.
Cable type
Outside diameter of
cable（mm）
4.0~6.0
(12~10AWG)
5.5~9.0
Traverse area（mm²）
Range
Industry generic PV cable
（model:PV1-F）
Recommended
value
4.0
(12AWG)

3. Installation 3. Installation
.23..22.
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 10 “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.
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).
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:
WARNING
An over-current protection device must be used between the inverter and
the grid.
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 10 “Specifications”.
NOTE
Use AL-CU transfer (bi-metallic) terminal or anti-oxidant grease with
aluminum cables and terminals.
3.4.3.2 Wiring procedure
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.
Table 3.2 Rating of grid OCPD
Inverter Rated
voltage(V)
Rated output
current (Amps)
Current for protection
device (A)
CSI-60K-T400GL03-E 91.2/86.6
220/380,230/400 195
CSI-50K-T400GL03-E 76.0/72.2 195
220/380,230/400

3. Installation
.25..24.
3. Installation
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 10~20Nm.
Figure 3.27 wiring with Neutral
Cable specification
70
38~56
45
Copper-cored cable
Cable outer diameter
(mm)
Traverse cross
sectional area (mm )
2
Range
Recommended
35~185
Range
Recommended
Figure 3.24 Strip AC cable
NOTE
S2 (insulation stripping length) is 2mm-3mm longer than S1.
(OT cable terminal crimping area)
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 300mm then strip the end of each wire.
NOTE:
If chosing aluminum alloy cable, you must use copper aluminum transfer
terminal in order to avoid direct contact between copper bar and Aluminum
alloy cable. (Please select a copper aluminum transfer terminal based on
your cable specification).
Figure 3.25 Copper aluminum transfer terminal
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.
PE
L
｝
S2 S1
N
Copper terminal of cable
flat gasket
spring washer
nut
L1 L2 L3 N
L1 L2 L3 N

4. Comm. & Monitoring 4. Comm. & Monitoring
.27..26.
There are 2 communication ports on the inverter.
One is a 4-Pin COM port and the other is a 16-Pin COM port.
The 4-Pin COM port is used to connect Canadian Solar datalogging sticks
(Please refer to manuals of Canadian Solar datalogging sticks for details).
The 16-Pin COM port is used for multiple inverter daisy chain connection/DRM connection/
Logic Interface Connection/Meter connection.
The inverter package will include a 16-Pin COM connector to be used on this 16-Pin
COM port. The Pin definition is shown below. Facing the connector, Pin 1 is on the left
of the first row. The rest polarity is showing in below diagram.
Meter RS485-A DRM1/5
Pin Pin
1 9
Definition Definition
2 10
3 11
4 12
5 13
6 14
7 15
8 16
Meter RS485-B DRM 2/6
COM1 485-A DRM 3/7
COM1 485-B DRM 4/8
\ RefGen
COM2 485-A Com/DRM0
COM2 485-B V+, 12V
\ V-, GND
Figure 4.1 16pin COM Connector
The following is the assembly diagram of the 16-Pin COM connector.
A-Main cable (Diameter: 4-6mm)
B-Locking Nut (Torque: 3.5-4N.m)
C- Sleeve
D-COM Wire (Dimension: 0.75-3mm², stripping length: 10-12mm)
E-Locking Screw (Torque: 0.4-0.6N.m)
F-Connector
A
BCE
F
D
Connect Steps:
1. Lead the main cable through the locking nut and the sleeve.
2. Strip the COM wires and insert into corresponding pin terminals.
Then fasten the locking screws for the pin terminals.
3. Push the sleeve onto the connector and fasten the locking nut on the end of the sleeve.
4. Connect the connector to the 16-Pin COM port at the bottom of the inverter.
Disconnect Steps:
1. Press the button on both sides of the connector and pull the connector to disconnect from
the COM port.
Figure 4.2
Figure 4.3
Figure 4.4

2. Use the unlock tool to insert into the groove on the sleeve and pull the sleeve to disconnect
from the connector.
Figure 4.5
4.1.2 Monitoring for multiple inverters
When multiple inverters need to run daisy chain communication together, Pin3/4 and Pin6/7
of the 16-Pin COM Port can be used.
Internet
Datalogger
PC monitoring
PV Strings
Inverter
PV Strings
PV Strings
Inverter
Inverter
Figure . Multiple inverter monitoring system4 6 (RS485)
DC
RS485
4.1 Inverter monitoring connection
Canadian Solar can provide optional accessories such as one-to-one datalogging sticks
including WiFi stick, GPRS stick and LAN stick for the monitoring of a single inverter or
one-to-multiple datalogging boxes including WiFi box and GPRS Box for the monitoring
of multiple inverters.
Please refer to corresponding manuals for details.
4.1.1 Monitoring for a single inverter
Every inverter can connect a one-to-one datalogging stick for remote monitoring purpose.
The datalogging stick should be directly connected to the 4-pin COM port at the bottom of the
inverter. It is a simple plug and play design with fast installation time. Details and the rest
configuration process please refer to the datalogging stick manual.
RS485 IN A
Pin
3
Definition Description
4
6
7
COM1 485-A
COM1 485-B
COM2 485-A
COM2 485-B
Figure 4.7
RS485 IN B
RS485 OUT A
RS485 OUT B
The bus RS485 cable can run into a one-to-multiple datalogging box or
any compatible 3rd party monitoring devices, PPC or plant SCADA.
4. Comm. & Monitoring 4. Comm. & Monitoring
.29..28.

4.2 DRM Connection/ Logic Interface Connection
The AS/NZS 4777.2:2015 requires inverters to support demand response modes (DRM).
Canadian Solar Australian version inverters fully comply with the DRM requirements in
AS/NZS 4777.2:2015. The pin definition is showing below. For details on the working logic,
please refer to the standard document of AS/NZS 4777.2:2015. The DRM controlling device
is not in the scope of supply of Canadian Solar.
Figure 4.9
DRM1/5
Pin Pin
9
Definition Definition
10
11
12
DRM 2/6
DRM 3/7
DRM 4/8
13
14
15
16
RefGen
Com/DRM0
V+, 12V
V-, GND
Some European countries may require a simply logic interface relay or contactor switch to
operate the RUN/STOP of inverters. For Canadian Solar European version inverters,
the Pin 13 and Pin 14 can be used to perform the control logic (Not available in South Africa).
The logic interface relay or contactor switch is not in the scope of supply of Canadian Solar.
When the relay is closed (Short between Pin13 and Pin14), the inverter can operate normally.
When the relay is opened (Open between Pin13 and Pin14), the inverter will reduce its output
power to zero within 5s.
Figure 4.10
Pin
Definition
13
14
RefGen
Com/DRM0
After wiring connection of DRM or Logic interface, please refer to section 7.5.8.1 to enable
the DRM/Logic interface function..
4.1.3 Power Line Communication (PLC) Option
PLC communication is an optional function of this inverter series. For inverters ordered with
PLC function, a PLC STA module will be integrated inside the inverter which will generate
PLC signals onto the AC cables. A separate device (PLC CCO) will be provided to customers
for receiving the PLC signals from the main AC cables and converting to RS485 signals.
PLC communication does not require extra communication cables. Please refer to the PLC
CCO manual for details.
4. Comm. & Monitoring 4. Comm. & Monitoring
.31..30.
Inverter
PV Strings
Inverter
PV Strings
Inverter
PV Strings
Inverter
PV Strings
Grid
Transformer
PLC CCO Datalogger
DC
AC
PLC
RS485
Figure . Multiple inverter monitoring system4 8 (PLC)
NOTE:
The PLC communication can not work with RS485 communication at the
same time. If already installed the PLC CCO for PLC communication on site,
then the RS485 ports on the inverters can not be used to connect another
monitoring/control device.

L1 L1' L2 L2' L3 L3' N
21 22 1718 19 20
A B
Figure 4.13 Direct Insert Type Meter - “Meter in Load”
L1 L2L3NPE
Load
L1 L2L3NPE
Load
Figure 4.14 External CT Type Meter - “Meter in Grid”
INV L1
INV L2
INV L3
INV N
INV PE
Grid L1
Grid L2
Grid L3
Grid N
Grid PE
INV L1
INV L2
INV L3
INV N
INV PE
Grid L1
Grid L2
Grid L3
Grid N
Grid PE
UaUb Uc N Ia* Ia Ib* Ib Ic* Ic
21 22 17 18 19 20
A B
CT Arrow Grid
Pin 1&2 on the 16-Pin Connector
4.3 Meter Connection
The inverter can work with a three phase smart meter to achieve Export Power Management
function and/or 24hour consumption monitoring function.
The Pin 1 and Pin 2 of the 16-Pin COM port are used for Meter RS485 communication.
Figure 4.11
Pin
Definition
1
2
Meter RS485-A
Meter RS485-B
Figure 4.12 Direct Insert Type Meter - “Meter in Grid”
Pin 1&2 on the 16-Pin Connector
L1 L2L3NPE
Load
INV L1
INV L2
INV L3
INV N
INV PE
Grid L1
Grid L2
Grid L3
Grid N
Grid PE
L1 L1' L2 L2' L3 L3' N
21 22 171819 20
A B
4. Comm. & Monitoring 4. Comm. & Monitoring
.33..32.
Pin 1&2 on the 16-Pin Connector

5. Commissioning
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
UaUb Uc N Ia* Ia Ib* Ib Ic* Ic
21 22 17 1819 20
A B
Figure 4.15 External CT Type Meter - “Meter in Load”
L1 L2L3NPE
Load
INV L1
INV L2
INV L3
INV N
INV PE
Grid L1
Grid L2
Grid L3
Grid N
Grid PE
CT Arrow Grid
Pin 1&2 on the 16-Pin Connector
4. Comm. & Monitoring
.35..34.

.37..36.
5. Commissioning 5. Commissioning
5.4 Preliminary checks
Verify DC connections.
1). Lightly tug on each DC 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.
WARNING
High Voltage.
AC and DC measurements should be made only by qualified personnel.
5.4.1 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.
5.4.2 AC Connections
5.4.3 DC configuration
5.4.3.1 VOC and Polarity
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.
WARNING
Input voltages higher than the maximum value accepted by the inverter
(see “Specifications” in section 10) 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.
5.4.3.2 Leakage to ground
Measure leakage to ground to check for a DC ground fault.
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:G99
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

.39..38.
5.4.3.2.1 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.
Measure VAC and verify voltage is within local grid standards.
1). Measure each phase to ground (L-G).
5.4.4.1 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 10 “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.
5.4.4.2 Phase rotation test
Verify AC configuration.
5.4.4 AC configuration
5. Commissioning 6. Start and Shutdown
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 switch ON. If the PV array (DC) voltage is higher than the inverter's
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 switch OFF.
3). Confirm all LED's switch OFF (~one (1) minute).
CAUTION
Although the inverter DC disconnect switch is 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.