CHNT Power CPS SCA-T1 Series User manual

Edition:1.0.0
USER MANUAL
CPS SCA-T1 Series Grid-tied PV Inverter

Preface
WARNING
CAUTION
DANGER
NOTICE
NOTE
Scope
This manual describes the installation, electrical connection, commissioning and maintenance, APP
operation of the inverter. Please first read the manual and related documents carefully before using the
product and store it in a place where installation, operation and maintenance personnel can access it at
any time. The illustration in this user manual is for reference only. This user manual is subject to change
without prior notice.
Tagert Group
Inverters must be installed by professional electrical engineers who have obtained relevant qualifications.
Indicates a potentially hazardous situation which, if not correctly
followed, will result in serious injury or death.
Indicates a potentially hazardous situation which, if not correctly
followed, could result in moderate or minor injury.
Indicates a potentially hazardous situation which, if not correctly
followed, could result in equipment failure to run, or property damage.
Call attention to important information, best practices and tips:
supplement additional safety instructions for your better use of the
inverter to reduce the waste of you resource.
VERSION ISSUED COMMENTS
3
Conventions
Indicates an imminently hazardous situation which, if not correctly
followed, will result in serious injury or death.
Natural cooling series Fan cooling series Fan cooling series
CPS SCA5KTL-T1/EU
CPS SCA6KTL-T1/EU
CPS SCA8KTL-T1/EU
CPS SCA10KTL-T1/EU
CPS SCA12KTL-T1/EU
CPS SCA15KTL-T1/EU
CPS SCA10KTL-T2/EU
CPS SCA15KTL-T2/EU
CPS SCA17KTL-T1/EU
CPS SCA20KTL-T1/EU
CPS SCA22KTL-T1/EU
CPS SCA25KTL-T1/EU
History
About This Manual
The following safety instructions and general information are used within this user manual.
This manual is applicable to following inverters:
VERSION ISSUED COMMENTS
1.0 11-Nov-22 First release

CONTENTS
1. Safety
2. Product Introduction
3. Unpacking and Storage
4. Installation
5. Electrical Connection
About This Manual
Target Group
Scope
Conventions
1.1 Symbols Used
1.2 Safety Instruction
2.1 Product Overview
2.2 Model Definition
2.3 Product Appearance
3.1 Unpacking and Check
3.2 Storage Inverter
3.3 Identify Inverter
6. Startup/Shutdown Procedure
7. Commissioning
8. User Interface
9. Troubleshooting and Maintenance
10. Technical Specifications
4.1 Selecting the Mounting Location
4.2 Mounting
5.1 Grounding
5.2 AC Connection
5.3 DC Connection
5.4 Communication Connection
5.5 Power Limit
5.6 DRM Connection
6.1 Check before startup/shutdown procedure
6.2 Startup Procedure
6.3 Shutdown Procedure
9.1 Inverter Troubleshooting
9.2 Maintenance
8.1 LED Indicator
8.2 Bluetooth Connection Setting
7.1 Inspection
7.2 Commissioning Procedure
5
4
Preface

1. Safety
Before using the inverter, please read all instructions and cautionary markings on the unit and manual.
Put the instructions where you can take them easily.
The inverter of us strictly conforms to related safety rules in design and test. Local safety regulations shall
be followed during installation, operation and maintenance. Incorrect operation work may cause injury
or death and damage to the inverter and other operator or a third party.
To avoid injury and damage to the inverter and other operator,please follow the safety precautions.
Danger of high voltage!
Only qualified personnel may perform work on the inverter.
Grounding terminal
1.1 Symbols Used
Safety Symbol Description
Danger of high voltage. Residual voltage in the inverter need
5 mins to discharge, wait 5 mins before operation.
Danger of hot surface
If the inverter service life has expired, dispose it in accordance with
local rules for disposal of electrical equipment waste. Do not dispose
the PV inverter with household garbage.
Fire danger
5 mins
Environmental Protection Use Period
Refer to the operating instructions
7
6
Installation and maintenance of inverters must be performed by qualified personnel, in accordance with
local electrical standards, wiring regulations and requirements of local power authorities.
To avoid electric shock, DC input and AC output of the inverter must be terminated at least 10 minutes
before performing any installation or maintenance.
󰀰
inverter during operation to avoid being burnt.
Ensure children are kept away from inverters.
Take appropriate measures to avoid electric shock.
Don’t open the front cover of the inverter. Apart from performing work at the wiring terminal,
touching or changing components without authorization may cause injury to people, damage to
inverters and annulment of the warranty.
Ensure the output voltage of the proposed PV array is lower than the maximum rated input voltage of
the inverter; otherwise the inverter may be damaged and the warranty annulled.
When exposed to sunlight, the PV array generates dangerous high DC voltage. Please operate according
to our instructions,or it will result in danger to life.
Don’t insert or pull the terminals when the inverter is running.
Safety Safety
The sign of caution stick on inverter.
1.2 Safety Instruction

This series inverter is an important part of PV system and it is suitable for household use, commercial
use, fishery use, agricultural use and other scenarios.
2.1 Overview
2. Product Introduction
2.3 Product Appearance
PV strings Inverter AC Distribution Unit Grid
(The appearance of the fan cooling series is taken as an example.)
TN-S
L1
L2
L3
N
PE
PE
Transformer
TN-C
L1
L2
L3
PEN
PE
TN-C-S
L1
L2
L3
N
PE
PE
TT
L1
L2
L3
N
PE
PE
This series inverter is suitable for TN-S, TN-C, TN-C-S and TT grid system. Refer to the following figures:
Transformer Transformer Transformer
The following is only for reference, specific please in kind prevail.
2.2 Model Definition
208.5mm 414.27mm
398mm
23
1
Number Description
1 DC Switch
2 LED Indicators
3 LCD Screen（Optional）
4 External ground terminal
Natural cooling series Fan cooling series
(The appearance of the fan cooling series is taken as an example.)
4
460mm
9
8
Product Introduction Product Introduction
190.5mm
480.5mm
Inverter Inverter Inverter Inverter
Model number descriptions(using CPS SCA10KTL-T1/EU, CPS SCA10KTL-T2/EU as an example):
CPS 10KTL-T1/EU
Brand
Power(10KW)
CPS 10KTL-T2/EU
Brand
Power(10KW)
Inverters have been tested as per AS/NZS 4777.2:2020 for three phase combinations.

9
10
Natural cooling series Fan cooling series 1Fan cooling series 2
5 6 7 8
Number Description
5 PV terminal
6 RS485 communication port
7 WiFi/GPRS communication port
8 AC output port
9 External fan(It is only suitable for fan cooling series)
Complete test and strict inspection shall be done before the inverter is sent out.
When receiving the inverter, check that the packing materials are intact.
After unpacking, examine the PV inverter and its fittings for damage and check that the deliverables
are complete.
3.1 Unpacking and Check
3. Unpacking and Storage
A B CDE
FGH I J
Number Description Quantity
A The Inverter 1
B Bracket 1
C AC shield（4× M4 security screws）1
D PV terminal connector groups 2 or 4
E File package 1
F Expansion screws groups 3
G M6 Security screws 2
H 6-Pin terminal 2
I Remove tool for PV connector 1 (Optional)
J RS485 cover 1
11
Product Introduction Unpacking and Storage
NOTICE Contact your dealer immediately if there is any issue found during operation.
Or

If the inverter is not used immediately, please keep the inverter in a specific environment according to the following
requirements:
Do not unpack the inverter and put desiccant in the original box if the PV inverter is unpacked.
Store temperature range: -25°C~+60°C; Relative humidity range: 0~100%.
Don’t position the inverter leaning forward, excessively leaning backward, tilting laterally, or upside down.
Ensure that qualified personnel inspect and test the inverter before use if it has been stored for a long time.
3.2 Storage Inverter
Inverter body label. The following is only for reference, specific please in kind prevail!
3.3 Identify Inverter
Number Description
1 Product name and modle
2 Product technical parameters
3 SN Barcode
4 Approve and Safety identification
Ensure there is no electronical connections around ports of the PV inverter
before installation.
4. Installation
1
2
3
4
DANGER
After checking the outer packing, move the PV inverter to the designated installation position horizontally.
CAUTION
1. Please place the inverter horizontally on the foam or other soft pads and
ensure that the ports are free of load-bearing pressure to avoid inverter damages
or scratches.
2. The inverter is heavy, be careful to prevent the inverter from slipping
and hurting the operator when moving the inverter.
4.1 Selecting the Mounting Location
a. The storage inverter protection class is IP66 and can be mounted indoors or outdoors.
󰀰
c. Do not install the inverter in a rest area since it will cause noise during operation.
d.The inverter carrier must be fire-proof. Do not mount the inverter on flammable building materials.
e. Ensure that the wall meets the requirements of the inverter installation.
f . Product label and warning symbols shall be clear to read after installation.
g. The installation height should be reasonable and make sure it is easy to operate and view the display.
h. Please avoid direct sunlight, rain exposure, snow cover.
4.1.1 Installation Environment Requirements
12 13
Unpacking and Storage Installation
Inverters have been tested as per AS/NZS 4777.2:2020 for three phase combinations.
No direct sunlight No Rain Exposure No snow cover
Snow cover
Direct Sunlight Rain Exposure
Number of MPPTs:
Strings per MPPT Input:
MPPT Operating Vo ltage (range):
Maximum Input Voltage (Vmax):
Maximum Current (Imp):
Short Circuit Cur rent (Isc):
Nominal Output Voltage:
Nominal Output Frequency:
Rated Current:
Rated Active Power:
Rated Apparent Power:
Power Factor (range):
Operating Temperature:
Operating Relative Humidity:
Operating Altitude:
Protective Class:
Ingress Protection Rating:
AC Overvoltage Category:
DC Overvoltage Category:
Inverter Topology:
xxxx-xxxx-xxx
Name:
Product Model: XX
XX
TUV-XXXXXXX
X
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX

Upright  Horizontally
Mount the inverter vertically or tilted backward by max 15°. In order to facilitate the heat dissipation
of the inverter.

Upside-down




Above: 600mm
Below: 600mm
Front: 1000mm
Both sides: 600mm
600mm 600mm

NOTICE
4.1.3 Installation Space Requirements
4.1.2 Mounting Requirements
The wrong installation mode causes the inverter to be damaged or unable to
work properly.
To ensure the operation of the inverter normally and easily, there are requirements on available spaces
of theinverter, e.g. to keep enough clearance. Refer to the following figures.
14 15
Installation Installation
Installation perspective schematic
354
64
8
8
15
20
294
27
8
Bracket size drawing
Unit: mm
Installation along the same line for multiple inverter
(The appearance of the fan cooling series is taken as an example.)

1 ) Use a horizontally ruler to mark the position of the 3 holes on the wall. Refer to Step 1. And drill 3 holes,
10mm in diameter and 63 mm in deep. Refer to Step 1 and Step 2.
2) Knock the expansion screw kit into the hole with a hammer. Refer to Step 3.
Note: Do not remove the nut unit.
3) After tightening 2-3 buckles, the expansion bolts are tight and not loose, and then unscrew the bolts,
spring washer, gasket. Refer to Step 3.
4) Install the bracket on the wall, the bracket screw is pointed at the expansion tube on the wall, then install
the gasket and tighten screw. Refer to Step 4.
To prevent damage of the inverter, please hang the inverter on the bracket and
confirm the reverse, do not loosen the handle until the inverter is fixed.
CAUTION
4.2 Mounting
DANGER
Step 1. Install the mounting bracket Step 2. Install the inverter.
Install the inverter on the bracket accurately and tighten the screws at both sides, as shown in Step 5 and
Step 6.
1.The walls must be fileproof and non-flammable materials, othewise there is a fire
risk.
2.Before drilling holes, check whether there are electric power pipes buried in the
walls in case of danger.
（M6; 3 sets）
A B C D
Expansion screw group
Ø:10mm; Depht: 63mm
Set bracket horizontally.
M6 Expansion screws; 2.5N.m
Install bracket.
1Mark the holes position on the wall. 2Drill the holes.
3Install the expansion tubes.
4
5
6
2*M6 screw; 2N·m
Tighten the screws at both sides.
Install the inverter.
16 17
Installation Installation
C & D
A & B

System Connection
CAUTION
According to regulations, the secondary protection grounding can’t replace the
PE terminal connection of the AC cable. Ensure that both are grounded
reliably. Otherwise, fatal injury can occur due to the high voltage.
WARNING
5. Electrical Connection
5.1 Grounding
Electrical Connection Electrical Connection
If the positive pole or negative pole of the PV array is required to be grounded,
then the inverter output (to AC grid) must be isolated by transformer in
accordance with IEC63109-1,-2 standards.
Step2.Insert the exposed core wires into the crimping areas of the OT terminal and crimp them
using hydraulic pliers.
Step3.Remove the ground screws from the ground points.
Step1.Remove an appropriate length using a wire Stripper.
According to the EN50178 requirement, the right side of the device has a protective grounding connection.
Be sure to connect the protection ground cable to this port when installing the inverter.
The user can perform the ground connection according to the on-site condition.
PE
DANGER
Before electrical connection, please ensure
that both the AC and DC ends are powered off,
otherwise there will be a high voltage shock.
Grid
PE
N
L3
L2
L1
PE
PV+
PV-
18 19
Screw M6 × 12mm; 3 N.m
OT Terminal OT6-6(5K-15K); OT16-6(17K-25K)

Items Remark
Yellow green lines S(Yellow green lines) S(PE line of DC cable)
S is the cross-sectional area.
L1L2L3 N PE

5.2 AC Connection
1. Measure and access the voltage and frequency of the point to ensure that it meets the grid-tied
specifications of the inverter.
2. PE wire (GND) must be well grounded to ensure that impedance between Neutral wire and Earth wire

3. Disconnect the circuit breaker or fuse from the inverter and grid-connected access point.
4. Use the copper wire.
5. Follow these steps.
Select proper AC cables and OT terminals (5 wires).
Unscrew the nut of the cover and thread the AC cable (5 wires) cross the nut, threaded sleeve and the
the cover. Then crimp the OT terminal and use heat shrink tubing or insulation tape for protection.
1
5.2.1 AC cable connection
To ensure that the inverter disconnect from the grid of safely, the independent AC breaker must be
configured for each inverter as a protective device.
5.2.2 AC Breaker and Leakage current protector
Inverter Model Recommended Value
CPS SCA5KTL-T1/EU, CPS SCA6KTL-T1/EU,CPS SCA8KTL-T1/EU 20A
CPS SCA10KTL-T1/EU, CPS SCA10KTL-T2/EU, CPS SCA12KTL-T1/EU 32A
CPS SCA15KTL-T1/EU, CPS SCA15KTL-T2/EU
CPS SCA20KTL-T1/EU 50A
CPS SCA22KTL-T1/EU, CPS SCA25KTL-T1/EU 63A
Internal current detection equipment for inverter, the inverter detects the leakage of the power
grid that is greater than the reduced value, and will be disconnected quickly from the power grid. If the
external installation leakage protection device is installed, Its action electricity must be greater than equal
to 300mA.
Multiple inverters are not allowed to share a circuit breaker.
Load is not allowed to connect between the inverter and the AC breaker.
WARNIMG
40A
Range 4-6 6-16 10-1
Recommended 6 10 16
A Wire outer diameter(mm) 11-18 24-32 24-32
B Cross-sectional
area(mm²)
Note:It is recommended to use outdoor dedicate cables
with multiple copper cores.
Model 5K-15K 17K-20K 22K-25K
No. Name
L
100mm(Recommended)
AB
L+2mm
Heat shrinkable tube
Wires threading and pressing.
Lock the AC cable to the corresponding AC terminals.
①Align the AC cover with the 4 holes and tighten it firmly with 4×M4 screws.
②Fasten the nut(waterproof cap).
Nut Torque
5K-15K M25 5.5N.m
17K-25K M40 12N.m
① 4*M4 screws;1.2N.m
②
4
Electrical Connection Electrical Connection
20 21
3
2
CPS SCA17KTL-T1/EU
Screw Torque D
5K-15K M4 1.5N.m 10mm
17K-25K M5 3N.m 12.5mm
(Only take CPS SCA25KTL-T1/EU modle as an example)
D
L1 L2 L3 N PE
The RCD used on the main solar supply circuit should be Type A 100mA. This and all associated wiring
must be installed in accordance with AS /NZS 4777.1.

5.3 DC Connection
DANGER
PV modules generate electric energy when exposed to sunlight and can create an electrical
shock hazard. Therefore, when connecting the PV modules, shield them with opaque cloth
and ensure that DC switches are OFF.
To avoid electric shock, don’t touch the charge part and connect the terminals carefully.
Before connecting power cables, ensure the AC/DC switches are OFF.
When the inverter is connected to the grid, don’t plug in or plug out the PV strings.Don’t
perform any operation until the inverter is shut down.
WARNING
PV modules connected in series in each PV string must be of the same specifications.
The maximum open-circuit voltage of each PV string must be always lower than or equal
to its permitted range.
The maximum short circuit current of each PV string must be always lower than or equal
to its permitted range.
Ensure that the positive and negative terminals of each PV strings connected to the
inverter correctly.
The positive or negative terminals of PV strings can’t be connected with short circuit.
The total output power of all PV strings can’t exceed the maximum input power of the
inverter.
NOTICE
The positive and negative terminals of PV modules can’t connect to PE wire(GND) ,
otherwise, the inverter will be damaged.
Ensure that the voltage of each PV string doesn’t exceed 1100V under any circumstance.
When the input voltage is 1000V to 1100V, the inverter will enter the standby state. When
the voltage returns to the MPPT operating voltage, namely 160V-1000V, the inverter will
return to the normal state.
Electrical Connection Electrical Connection
5.3.1 Preparation
Inverter module PV input configuration
CPS SCA5KTL-T1/EU,CPS SCA6KTL-T1/EU PV strings circuit＜15A, All PV strings are connected into one group
CPS SCA8KTL-T1/EU,CPS SCA10KTL-T1/EU PV strings circuit＜12A, All PV strings are connected into two groups
CPS SCA12KTL-T1/EU,CPS SCA15KTL-T1/EU PV str
CPS SCA10KTL-T2/EU, PV strings circuit
CPS SCA17KTL-T1/EU,CPS SCA20KTL-T1/EU PV strings circuit＜12A, All PV strings are connected into four groups
CPS SCA22KTL-T1/EU,CPS SCA25KTL-T1/EU All PV strings are connected into four groups
PV strings circu, All PV strings are connected into three groups
PV strings circuit＞15A, All PV strings are connected into two groups
PV strings circuit＞12A, All PV strings are connected into one group
CPS SCA15KTL-T2/EU PV strings circuit＞15A, All PV strings are connected into one group
Before connecting the PV input to the inverter, ensure that the package meets the following
electrical specifications.
Inverter module Limit of each input open-circuit voltage Maximum allowable input terminal current
All 1100V 20A
Open-circuit voltage altitude derating curve of the inverter as shown in the following figure
2000m 3000m 4000m
1100V
950V
850V
Elevation(m)
Open-circuit voltage altitude derating curve of the inverter
NOTE To ensure that the inverter reaches the enclosure of IP65, it can only use the
connector provided by supply.
22 23
Different PV module input configuration module table (All PV strings are connected to the inverter in the
corresponding groups number)

5.3.2 PV Connection
PV connection please refer to below.
5.4 Communication Connection
RS485
RS485 Modules
5.4.1 Communication Mode Description
Electrical Connection
Positive Connector
8~10mm
Note:DC cable should be dedicate PV cable(suggest using 4~6mm² PV1-F cable).
Click
Use crimping tool to stitch.
Limit buckle can’t be crimped.
Negetive Connector
Tighten the waterproof nuts
on each connector with a wrench
to avoid loosening.
PC
Test string voltage and confirm string polarity. Ensure taht the DC switch is OFF.
8~10mm
Diameter
5~8mm
~~
~
~
Limit buckle
RS485 switching module monitors PV inverter’s data status through collecting
and uploading data to Cloud server.
Module Function description
Table 5.4 Communications module description
You can use the following communication modes to implement communication:
Bluetooth and RS485 which are described as follows.
24 25
Electrical Connection
Bluetooth Module
You can turn on the Bluetooth function of the mobile phone, and set parameters and monitor data
of the inverter through the mobile APP.
Through DB9 communication interface is transferred to other communication modules to monitor
the inverter. The module and functions are shown in Table 5.4.
5.4.2 RS485 Connection
8mm

RS485 Communication
cable (22AWG)
Nut
Threaded sleeve
1
2
3
4
5
6
A
B
A
B
PE
DO1
ALM
SIG
D12
D11
GND
Connect the differential positive and negative signal
wires of the first RS485 cable from the data logger to
Pin1 and Pin2 of the 6-Pin terminal respectively. If
there is more than one inverter, connect Pin3 and Pin4
to Pin1 and Pin2 of another inverter.
Pin1 and 2
Pin3 and 4 Pin1 and 2 Data Logger
Pin3 and 4
Pin1 and 2
2 × M4 screw; 0.8N·m
COM2
PE
0.8~1.5N·m
1
23
4
Pin Inverter
1 A
2 B
3 A
4 B
5 PE
6 PE
1 DO1
2 ALM
3 EXT_SIG
4 DI2
5 DI1
6 GND
Note: RS485 is only applicable to data logger or other device you use. Skip this part if you use wifi monitoring.
RS485 communication mode with multiple inverters
Wires making, threading and wiring.
Loosen the screws
and remove the
cover plate.
Insert the 6-Pin terminal into
the RS485 communication port. Install the RS485 cover.

5.5 Power limit
5.5.1 Power Limit Control Setting：
External Wiring diagram of Inverter+Meter（with embedded CT )
APP Settings
Default
Setting steps:
13 14 16 17 19 21 24 25
1 4 7 10
3 6 9 10
PV strings
Inverter low-voltage power grid
Load
N
N
B
A
N
L3
L3 L3
L2
L2
L2
L1
L1
L1
Location Description Function
1 1A
2 1B
3 2A
4 2B
6 PE
5 PE
Power limit RS485
Customer Interface
RS485 supported baud rate: 9600BPS
A
B
A
B
PE
PE
ON
1
5.4.3 Country code configuration (only for Administrator)
Electrical ConnectionElectrical Connection
26 27
Note on Regional Safety Settings
Regional Safety Setting is a mandatory selection when configuring the system—the system will not operate
if it is not selected. You may be prompted to update the inverter software. Do this if requested. For convenience
the Regional Safety Settings are set by selecting the Region from the list provided in the app. The list is
maintained with the latest settings required by AS4777.2:2020. Selection of a region automatically selects
Power Quality Response Mode settings, including:
Voltage balance mode (where available)
Voltage and frequency limits
Sustained operation for frequency variations
Grid Protection
Power Rate Limits
Frequency Response Limits
Note
The local grid operator may request a non-standard safety setting for an installation. If no, contact our
company for assistance in changing settings.
Voltage Disturbance Withstand
Volt-Var response
Volt-Watt response
Fixed Power Factor Mode
Reactive Power mode
Click "INV/ESI settings" button to enter the "Inverter Settings" page. Click "Initial" button to set grid code,
then get back and click "RW Register" button to set register parameters or modbus address if necessary.
Now you can click "Overview" button to see basic information.
Note:
For Australian Market: Region settings must be selected during commissioning. To comply with AS/NZS 4777.2:2020.
Please contact your local electricity grid operator on which region to select.
Note:
Grid code setting can be selected under
Administrator mode only.
XXXXXXXXXX
XXXXXXXXXX
AU (AS4777.2:2020
Australia A)
AU (AS4777.2:2020
Australia B)
AU (AS4777.2:2020
Australia C)
AU (AS4777.2:2020
New Zealand)
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
Modbus ID 1
Grid code setting X
Overview Initial RW Register
CUGW-XXXXXXXXXBack
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Internet Settings More...
-> Refresh:
Model:
SN:
Firmware version:
Cloud server:
Status:
Internet:
Wi-Fi Status:
Baud Rate:
Inverter SettingsBack
2022-07-13 09:10:18 GMT+8
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》
Enabling Bluetooth communication on your mobile phone, you can set parameters about power limit
function to control inverter.
Chint
In general, the power limit function will be realized by wiring the digital meter externally and setting
the parameters internally in APP. (Find specific setting instruction in clause 5.5.1)
Yet, except “external wiring system+APP setting” mode to acheive power limit, two generation control
functions, generation and export limit, are provided by the inverter’s APP according to Australian regulation
AS/NZS 4777.2:2020. (Find specific setting instruction in clause 5.5.2)
- Set the ‘Power limit function’ to
‘Digital Power Meter’
- Set the Digital Power Meter Type
- Set the meter position base on the
meter installed on load or on grid
- Set maximum feed-in grid power if
needed, the default value is “0”.

5.6 DRM Connection
6. Startup/Shutdown Procedure
6.1 Check before the startup/shutdown procrdures
Check follwing this procedures after installtion.
No. Items
1 The inverter is firmly installed.
2 There is enough heat dissipation space, no external objects or parts left on the inverter.
3 It is convenient for operation and maintenance.
4 The wiring of the system is correct and firm.
5 Check whether the DC and AC connection are correct with a multimeter, and whether
there is a short circuit, break, or wrong connection.
6 Check whether the waterproof nuts of rach part are tightened.
7 The vacant port has been sealed. All gaps at the cable inlet and outlet holes have been
plugged with fireproof/waterproof materials, such as fireproof mud.
8 All safety labels and warnig labels on the inverter are complete without occulusion or
alteration.
Mode Function
DRM 0 Short circuit COM & REF
No DRM Open circuit COM & REF
METHOD FOR ASSERTING DRM
5.5.2 Power Limit Control Setting: Generation and Export Limits
When “Power limit function” is set to “Digital Power Meter”, the RS485 of inverter will change to a
Host that will communicate with digital meter using ModbusRTU Protocol (9600 BPS, 8 data bit, 1 stop
bit, no parity data format) through communication address 1. Please make sure that the meter is set to
Modbus-RTU, 9600, 8-N-1 with address 1. For details of digital meter setting operation, please refer to
the meter user manual.
The generation control function is used to control the active or apparent power output levels of an
inverter or multiple inverter combination such that it meets a predetermined generation output level that
may be less than the total rated apparent power of the inverter or multiple inverter combination.
Follow the steps below to set parameters.
1. Open Chint Connect APP, and connect to the inverter you used. (See specific instruction in Clause 8.2.)
2. Find ‘Power Limit’ manual in Overview page.
3. Choose limit types to enter corresponding parameters. Please set limit values according to actual
necessity and relevant local regulation.
How to choose between Generation limit and Export limit?
If you need to limit the apparent power output level of an inverter, then choose ‘Generation limits’;
If you need to limit the export power level from an inverter to the grid, then choose ‘Export limit’.
How to choose between Hard limit and Soft limit?
If Hard Limit is enabled, power generation/export value exceeded its set value for 15s, then the
inverter will be disconnected within 5s.
If Soft Limit is enabled, power generation/export value exceeded its set value, then the generation
limit control function shall operate to reduce the apparent power output/ the power export of the
inverter or multiple inverter combination to less than the soft limit within 15 s.
In general, the Soft Limit value should be set to less than the Hard Limit value.
Location Description
1 DIO1
2 ALM
3 EXT_SIG
4 DI2
6 GND
5 DI1
Customer Interface
DIO1
ALM
EXT_SIG
DI2
DI1
GND
Electrical Connection Startup/Shutdown Procedure
28 29
In accordance with AS/NZS 4777.2:2020, the inverter should support DRM( Demand Response
Mode) function.
The port definition of DRM function and methods of its connection are shown as below.
Hard Limit
Power xxxxx
xxxxx
Soft Limit
Power
On
On
VA
VA
GENERATION LIMITS
xxxxx
xxxxx
Hard Limit
Power
Soft Limit
Power
On
On
W
W
EXPORT LIMITS
Generation limits
Export limits
?
?
?
Note: Actual setting contents of the APP may be slightly different, so the screenshots here are only
for reference.

6.2 Startup Procedure
8. User Interface
LED indicator is on the inverter display panel as below.
6.3 Shutdown Procedure
8.1 LED Indicator
It may be necessary to shut down the inverter sometimes during the daily use. If necessary, please follow
the procedures:
WARNING
After the inverter is powered off, the heat sink generates heat and there is excess
electricity in the inverter. To aovid electric shocks and burns, powered off inverter
for at least 10 minutes before performing operations.
LED indicator
User Interface
OFF
ON
1
OFF ON
AC Circuit Breaker
Supply Main Switch
Startup the inverter following the procedures:
2
DC Switch
3
Switch to ON
LED icon
4
Blue on (normal status)
5
Your system has been started up
Finishing
(The figure is only for reference)
See if there’s any on site
Wait at least 5 minutes
4
Let inverter voltage
discharge to a safe range.
5 mins
Switch to ON
(The figure is only for reference)
1
OFF ON
AC Circuit Breaker
Supply Main Switch
2
DC Switch
3
Switch to OFF
See if there’s any on site
Switch to OFF
(The figure is only for reference)
5
Your system has shut down
Finishing
OFF
ON
(The figure is only for reference)
User Interface
30 31
It is necessary to make a complete commissioning of the inverter system. This will essentially protect
the system from fire, electric shock or other damages or injuries.
7.1 Inspection
Before commissioning, the operator or installer (qualified personnel) must inspect the system carefully
and make sure:
1) The system is firmly installed correctly following the contents and notifications of this
manual, and there are enough spaces for operation, maintenance and ventilation.
2) All the terminals and cables are in good status without any damages.
3) No items are left on the inverter or within the required clearance section.
4) The PV, battery pack is working normally, and grid is normal.
7. Commissioning
7.2 Commissioning Procedure
After the inspection and make sure status is right, then start the commissioning of the system.
1) Power on the system by referring to the Startup section 6.2.
2) Setting the parameters on the App according to user’s requirement.
3) Finish commissioning.

User Interface
Table 8-1 LED status descriptions
User Interface
LED status Explanation
Blue blinks slowly(1s/time) Standby
Blue on Normal status
Green on Power limited status
Red blinks slowly(1s/time) Output side fault
Red blinks fast(0.25s/time) Input side fault
Red on Inverter internal fault
Red/green/blue light
up in turn (0.25s/color) 1. Inverter firmware updating
2. Initial status of power-on
Note: If you select a machine with a LCD screen,the
warning code will be displayed on the LCD screen.
Non-lcd screen models need to enter the app to view
the corresponding warning code.
If the Inverter is malfunctioning, a samll horn symbol will appear in the APP interface. You can get specific
fault information by clicking on the small horn symbol as below image.
32 33
Warning Table
Status Details Warning code
Red led
blink
(slowly)
Grid over voltage A0
Grid under voltage A1
Grid absent A2
Grid over frequency A3
Grid under frequency A4
Grid unbalance A6
Grid over mean voltage A7
Grid N abnormal A8
PV over voltage B0
Insulation resistance abnormal B1
(Earth Fault)
Leakage current abnormal B2
(Earth Fault)
PV Strings reverse B7
PV under voltage PV B4
Control power abnormal C0
Electric arc abnormal C1
DC bias current abnormal C2
Inverter relay abnormal C3
Inverter over temperature C5
Leakage current HCT abnormal C6
System fault C7
Red led
blink
(quickly)
0.25s
every
times
DC link voltage unbalance C9
DC-link over voltage CA
Internal communication error CB
Software version incompatibility CC
EEPROM fault CD
Sampling inconsistency CE
Invert circuit abnormal CF
Boost circuit abnormal CG
Data logger lost CH
Meter lost CJ
Fan abnormal C8
Remote off CN
Status Details Warning code
Red led
on
Red led
on
/
1s every
times
Runtime Min.
00.00
Current Power kW
00.00
E-Today kWh
00.00
E-Month kMh
00.00
E-Annual kWh
00.00
E-Total kMh
00.00
Last updated ：2022-07-28 15:21:11 +0800
Summary DC AC Other Version
Data Settings More
Via-Gateway 5***41122312
Running Inverter ID 1
CPS SCAxxxxxxxxxxxx
[ FW Master 0.00 ; Dupty 0.00 ]
SN 0001012311321314124
B1- PV insulation abnormal
B2 - Leakage current abnormal
Warranty period ends on 2032-10-01

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SN:
Firmware version:
Cloud server:
Status:
Internet:
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Baud Rate:
2022-07-13 09:10:18 GMT+8
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8.2 Bluetooth Connection Setting
Troubleshooting and Maintenance
User Interface
9. Troubleshooting and Maintenance
WARNING
Before maintaining and commissioning inverter and its peripheral distribution unit,
switch off all the charged terminals of the inverter and wait at least 10 minutes after
the inverter is powered off,otherwise there will be a high voltage shock..
DANGER
Wrong maintenance will result in personnel injury or equipment damage!
Before performing any maintenance operations, you must follow these steps:
First, disconnect the AC circuit breaker on the grid side, and then disconnect
the DC switch.
Wait at least 10 minutes after the inverter is powered off,otherwise there will be a
high voltage shock.
Use testing equipment to make sure there is no voltage or current.
9.1 Troubleshooting
NOTICE
Comply with ESD protection specifications and power distribution ESD bracelets.
Avoid unnecessary contact with the circuit board.
Touching printed circuit boards or other electrostatic sensitive components may
cause damage during the process.
If the inverter is break down, the LED indicator will turn to red.
1. Scan the QR code to download "Chint Connect" APP.
2. Install WiFi module into the COM1 port of the inverter.
3. Power on the inverter.
4. Open the Bluetooth function on your own phone, then open the APP and operate as below.
Note: You need to grant all access rights in all pop-up windows when installing the APP or
setting your phone.
4-1. Touch "Smart Link" icon to enter smart link interface and then click "Next" button to enter
the "Connect to the adapter" interface.
4-2. Choose correct wireless network name (can be found on the WiFi module) from the Bluetooth List, the
inverter will connect to WiFi dongle.
4-3. Click "INV/ESI settings" button to enter the “Inverter Settings” page.
4-4. Click "Initial" button to set grid code, then get back and click "RW Register" button to set register parameters
or modbus address if necessary. Now you can click "Overview" button to see basic information.
34 35
Chint
Alarm Information Measures Recommended
A0-Grid over
voltage
1. If the alarm occurs accidentally, possibly the power grid is abnormal accidentally. No extra
action is needed.
2. If the alarm occurs repeatedly, contact the local power station. After receiving approval of the
local power bureau, revise the electrical protection parameters setting on the inverter through APP.
3. If the alarm persists for a long time, please confirm:
1) The AC circuit breaker does not jump frequently (the instantaneous high pressure);
2) If the line of communication is followed by the user manual, the cable impedance will cause
the power grid to rise;
3) The three-phase machine measures whether the voltage between the zero line and the ground
line exceeds 30V; More than the wiring of the grid;
If there is no problem, please contact the customer service center.
A1-Grid under
voltage
1.If the alarm occurs accidentally, possibly the power grid is abnormal accidentally. No extra
action is needed.
2.If the alarm occurs repeatedly, contact the local power station. After receiving approval of the
local power bureau, revise the electrical protection parameters setting on the inverter through APP.
3.If the alarm persists for a long time, please confirm:
1) AC circuit breaker is disconnect or not;
2) Whether the AC circuit breaker is damaged (whether the voltage in the closed state is
consistent with the voltage of the outlet);
3) The AC terminals are in good contact.
If the actual measuring voltage is within the specification range, please contact the customer
service report repair.
APP Settings
InstallationO&M Service
Flex Gateway Dongle Gateway
NO-LCD Inverter Rename WiFi Dongle
Scan Devices
1010
Smart Link
Firmware
CPLK-XXXXXXXX
Connect to the adapter
If connection of BLE fails, please try WIFI mode
Click Refresh
Quick connect
Scan the barcode or QR code of the adapter
CAUTION:
The BLE with the changed name cannot be
automatically scannned by scanning!
Modbus ID 1
Grid code setting 4
Overview Initial RW Register
Inverter SettingsBack

Troubleshooting and Maintenance
Troubleshooting and Maintenance
36 37
A2-Grid absent
1. If the alarm occurs accidentally, possibly the power grid is abnormal accidentally. No extra
action is needed.
2. If the alarm occurs repeatedly, contact the local power station. After receiving approval of the
local power bureau, revise the electrical protection parameters setting on the inverter through APP.
3. If the alarm persists for a long time, please confirm:
1) AC circuit breaker is disconnect or not;
2) Whether the AC circuit breaker is damaged (whether the voltage in the closed state is
consistent with the voltage of the outlet);
3) The AC terminals are in good contact;
4) Whether the power supply line failure.
If exclude all possibility, please contact the customer service report repair.
A3-Grid over
frequency
1. If the alarm occurs accidentally, possibly the power grid is abnormal accidentally. No extra
action is needed.
2. If the alarm occurs repeatedly, contact the local power station. After receiving approval of the
local power bureau, revise the electrical protection parameters setting on the inverter through APP.
3. If the alarm persists for a long time, please contact the customer service center.
A4-Grid under
frequency
1. If the alarm occurs accidentally, possibly the power grid is abnormal accidentally. No extra
action is needed.
2. If the alarm occurs repeatedly, contact the local power station. After receiving approval of the
local power bureau, revise the electrical protection parameters setting on the inverter through APP.
3. If the alarm persists for a long time, please contact the customer service center.
A6-Grid abnormal
(Only for three-
phase inverter)
1. If the alarm occurs accidentally, possibly the power grid is abnormal accidentally. No extra
action is needed.
2. If the alarm occurs repeatedly, please:
1) Measuring three-phase voltages (L1-N, L2-N, L3-N) and check whether the inbalance is more
than 30%. If yes, please contact energy company.
2) Measuring three-phase voltages at input and output sides of AC circuit breaker to check
whether breaker is damaged. If yes, please replace a new breaker.
3) Short circuit input and output ports of neutral wire on AC breaker, then check the alarm status.
If it returns normal, please replace a 3-pole breaker and keep neutral wire shorting. If not, please
contact service center.
A7-Grid over
mean voltage
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is
required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer
service center.
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is
required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer
service center.
A8-Grid N
abnormal
B0-PV over
voltage
Check whether the maximum voltage of a single string of input PV modules exceeds the MPPT
voltage range. If the maximum voltage is higher than the standard voltage, modify the number of
PV module connection strings.
B1-PV insulation
abnormal
1. If the alarm occurs accidentally but the inverter can generate power, check the component and
the installation environment of wires are wet or not. Please improve the installation environment.
2. If the alarm occurs repeatedly and the inverter can generate electricity occasionally, check
whether the positive and negative polarity of the PV component are short circuit or not. And check
if the component is damaged or the connection line is broken.
3. If the alarm continues and equipment cannot generate power, please contact customer service
report repair.
B2-Leakage current
abnormal
1. If the alarm occurs accidentally but the inverter can generate power, probably the power grid
causes. The inverter can be automatically recovered. No extra action is needed.
2. If the alarm occurs frequently and is accompanied by an insulation impedance alarm. Check
the abnormal alarm of the insulation.
3. If the alarm continues and the equipment cannot generate electricity, please contact customer
service report repair.
B4-PV under
voltage
1. If occurs when the light is weak (such as the early morning or evening, rainy weather and dust
storms), the component voltage is lower than normal. No extra action is needed.
2. If there is a weak condition of light, please check whether the group to have a short circuit and
open circuit or not.
B7-PV string
reverse
Check and modify the positive and negative polarity of the input of the circuit string.
C0-Internal power
supply abnormal
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.
C1-Electric arc
abnormal If the alarm occurs, the inverter cannot work properly. Please contact the customer service center.
C2-Inverter over dc-
bias current
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.
C3-Inverter relay
abnormal
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the single-phase inverter check whether the live line and neutral line of
the contact connection is reversed. The three-phase inverter check the voltage of the live line to neutral
line and the voltage of the live line to the ground. If the grid side is normal, please contact the customer
service report repair.
C5-Inverter over
temperature
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action required.
2. If the alarm occurs repeatedly, please check whether the installation site for direct sunlight, good
ventilation, and high ambient temperature (such as installed on the parapet) or not. If the ambient
temperature is lower than 45° C and the heat dissipation is good, please contact the customer service
center.
C6-GFCI abnormal
1. If the alarm occurs occasionally, it could have been an occasional exception to the external wiring.
The inverter can be automatically recovered. No action required.
2. If it occurs repeatedly or cannot be recovered for a long time, please contact the customer service
center.
C7-System type
error
If the alarm occurs, the inverter cannot work, please restart the inverter. If the alarm continues, please
contact the customer service center.
C9-Unbalance Dc-
link voltage
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.
CA-Dc-link over
voltage
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.
CB-Internal
communication
error
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.
CC-Software
incompatibility
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.
CD-Internal storage
error
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.
CE-Data
inconsistency
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.

Figure 9.1 Removing DC input connector
Step5 Use a soft brush to clean the fan. If you need to replace the fan, use a screwdriver to unscrew
the fan bracket and remove the fan.
Step6 Install the new fan in the opposite steps, and then power on the system.
------Ending
9.2 Maintenance
Routine Maintenance of inverter
Check Item Check Content Maintain content Maintenance
Interval
Inverter output
status
Statistically maintain the status of
electrical yield, and remotely monitor
its abnormal status.
Inverter Check periodically and ensure that the
appearance heat sink is free from dust and blockage.
Clean periodically the
heat sink.
NA Weekly
Yearly
Inverter
running
status
a.Check that the inverter is not damaged
or deformed.
b.Check for normal sound emitted
during inverter operation.
c.Check and ensure that all inverter
communications is running well.
If there is any abnormal
phenomenon,replace the
relevant parts.
Inverter
Electrical
Connections
a.Check and ensure that AC, DC, and
communication cables are securely
connected;
b.Check and ensure that PGND cables
are securely connected;
c.Check and ensure that cables are
intact and free from aging;
If there is any abnormal
phenomenon,replace the
cable or re-connect it.
Mouthly
Semiannually
Table 9-1.Maintenance checklist and interval
Fan Maintenance
When the external fan of the inverter can’t work normally, the inverter may not cool effectively.
It may affect the efficiency of the inverter or cause derating operation. Keep the fan clean and
replace the damaged fan in time.
Step1 Shutdown the inverter.
Step2 Refer to electrical connection installation and disconnect the inverter in the opposite steps.
Step3 Refer to mechanical installation and remove the inverter in the opposite steps.
Step4 Screw down two security screws anticlockwise which on the inverter fan bracket .
Troubleshooting and Maintenance
Troubleshooting and Maintenance
WARNING
Inverter Uninstsall
Inverter uninstall requires below procedure:
Step1. Disconnection all electric connections including these of communications cables, DC input
cables, AC output cables and the PGND cables.
Step2. Remove the inverter from its rear panel.
Step3. Remove the rear panel.
Note：
When uninstalling DC input connectors, insert removal wrench into the bayonet shown in Figure, press
the wrench down, and take out the connector.
Before uninstalling all electric connections, DC input connector, AC output
cables and the PGND cables, please ensure that both the AC terminal and
the DC terminal are powered off. And the DC switch is OFF to avert
equipment damage or personal injury.
12
(Only take 25k modle as an example)
38 39
CF-Inverter
abnormal
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.
CG-Boost abnormal
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.
CH-Grid N
abnormal
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer service
center.
CJ-Meter lost
If the alarm occurs, please check the RS485 connection. If it is abnormal, please revise the connection; if it
is normal, please contact the customer service center.
C8-Fan abnormal
1. If the alarm occurs occasionally, please restart the inverter.
2. If it occurs repeatedly or cannot be recovered for a long time, check whether the external fan is blocked
by foreign objects. Otherwise, please contact the customer service center.