Epever MPPT User manual

User Manual
MSC2210N
MSC3210N
MSC4210N
MSC4215N
MPPT Solar Charge Controller

Contents
Important Safety Instructions
1 General Information
1.1 Overview.....................................................................................4
1.2 Identification of parts...................................................................6
1.3 Naming rules...............................................................................7
1.4 Connection diagram....................................................................7
1.4.1 Battery mode ........................................................................7
1.4.2 No-battery mode...................................................................8
2 Interface
2.1 Indicator ......................................................................................9
2.2 Button........................................................................................10
2.3 Battery type...............................................................................10
2.4 Battery voltage control parameters............................................11
2.5 Load output voltage and priority setting.....................................13
2.6 Load operation mode ................................................................14
2.7 Accessories...............................................................................14
3 Installation
3.1 Attentions..................................................................................16
3.2 PV requirements........................................................................17
3.3 Wire size ...................................................................................19
3.4 Mounting ...................................................................................21
4 Others
4.1 Protection..................................................................................25
4.2 Troubleshooting.........................................................................26
4.3 Maintenance..............................................................................27
5 Specifications
Annex I PV Conversion Efficiency Curves
Annex 2 Load Conversion Efficiency Curves

1
Important Safety Instructions
Please reserve this manual for future review.
This manual contains all instructions of safety, installation, and operation for MSC-N
series Security Monitoring Maximum Power Point Tracking (MPPT) solar controller
("controller" as referred to in this manual).
1. Explanation of symbols
To enable users to use the product efficiently, as well as to ensure personal
and property safety, please read related literature accompanying the following
symbols.
WARNING: The entire system should be installed by professional and
technical personnel.
2. Requirements for professional and technical personnel
Professionally trained；
Familiar with related safety specifications for the electrical system;
TIP: Indicates recommendations that can be referred to.
NOTE: Indicates a critical tip during the operation, if ignored, may cause the
device to run in error.
CAUTION: Indicates potential hazards, if not avoided, may cause the device
damaged.
WARNING: Indicates the danger of electric shock, if not avoided, would
cause casualties.
WARNING HOT SURFACE: Indicates the risk of high temperature, if not
avoided, would cause scalds.
All of the safety and operating instructions should be read, adhered to and
followed before operating the device.

2
Read this manual carefully and master related safety cautions.
3. Professional and technical personnel is allowed to do
Install the controller to a specified location;
Conduct trial operations for the controller;
Operate and maintain the controller
4. Safety cautions before installation
IMPORTANT: When you receive the controller, check whether there is any
damage that occurred in transportation. Contact the transportation company or
our company in time for any problem.
CAUTION: When storing or moving the controller, follow the instructions in the
manual.
CAUTION: When installing the controller, must evaluate whether the
operation area exists any arc danger.
WARNING: Keep the controller out of reach of children.
5. Safety cautions for mechanical installation
WARNING: Before installation, make sure the controller has no electrical
connection.
WARNING: Ensure enough heat dissipation space for the controller before
installation. Do not install the controller in a harsh environment such as
humid, greasy, flammable, explosive, or dust accumulation.
6. Safety cautions for electrical connection
CAUTION: Check whether all the wiring connections are tight to avoid the
danger of heat accumulation due to loose connections.
WARNING: The input of PV array is a high voltage, do not touch the wiring
connection to avoid electric shock.
7. Safety cautions for controller operation:
WARNING HOT SURFACE: When the controller is running, the heat sink will
generate a lot of heat, and the temperature would be very high, please do
not touch it.

3
CAUTION: When the controller is running, please do not open the cabinet.
8. Dangerous operations which would cause electric arc, fire or explosion
Touch the wire end that hasn't been insulation treated and maybe electriferous.
Touch the wiring copper row, terminals, or internal modules of the controller that
may be electriferous.
Screw or other spare parts inadvertently falls into the controller.
Improper operations by untrained non-professional or technical personnel.
WARNING: Once an accident occurs, it must be handled by professional and
technical personnel. Improper operations would cause more serious
accidents.
9. Safety cautions for stopping the controller
After the controller stop running for five minutes, the internal conductive modules
could be touched;
The controller is allowed to restart after removing the faults which affect the safety
performance of the controller.
There are no serviceable parts inside. If any maintenance service is required,
please contact our service personnel.
10. Safety cautions for controller maintenance
It is recommended to check the controller with testing equipment to ensure there
is no voltage and current at all;
When conducting electrical connection and maintenance, must post temporary
warning sign or put up barriers to prevent unrelated personnel from entering the
electrical connection or maintenance area;
An improper operation to the controller may cause personal injury or equipment
damage;
Wear an antistatic wrist strap or avoid unnecessary contact with the circuit board
to prevent electrostatic damage.

4
1 General Information
1.1 Overview
MSC-N series is a new generation of the solar controller with a two-way load output.
The two-way load output voltage can be switched to 12V or 24V DC freely by an
enable switch. According to the battery voltage, the two-way load output voltage can
be turned off in stages to ensure the load1 output. The two-way load output adopts a
high-efficiency buck-boost conversion circuit, which greatly reduces the invalid loss of
the battery and improves the service time of the battery.
The MPPT charging technology can fast track the max power point of solar panels in
any situation and obtain the maximum energy in real-time. It can increase the
utilization ratio of solar energy by 20%-30% compared with the PWM charging
method. Charging current limit, charging power limit, and high temperature charging
power automatic reduction of function, fully ensure the system stability of access to
excess PV modules and high temperature running. Adaptive three-stage charging
mode and comprehensive electronic protections such as over-charge, over-
discharge, PV & battery reverse polarity, etc. effectively ensure the power supply
safer, more stable, and more durable. MSC-N series controllers are most suitable for
applications in the field of security monitoring, RV, and household system, etc.
Features
High quality and low failure rate components of ST or IR to ensure the service
life
Advanced MPPT technology & ultra-fast tracking speed guarantee tracking
efficiency up to 99.5%
Maximum DC/DC transfer efficiency up to 98.6%, full load efficiency up to
96.6 %
Accurate recognizing and tracking technology of multi-peaks maximum power
point
Wider MPP running voltage to increase the utilization ratio of PV modules

5
Support the lead-acid and lithium batteries, programmable temperature
compensation
High temperature charging automatic power reduction function
The freely set voltage level of the two-way load output, especially suitable for
voltage-sensitive loads
Configurable cut-off voltage value for the two-way load output
Support no-battery mode, PV array powers the load directly ①
High-efficiency buck-boost control chip and power device, conversion
efficiency up to 98.9%
Optional charging prior mode and load prior mode
Effectively prolong the running time of load one by the discontinuous power
supply in load prior mode
Customized the load two output according to the actual requirement
Common negative design, used in a negative grounded system
Real-time monitor controller by an external remote meter, BT module, Wifi
module or PC software
Comprehensive electronic protections
①Set the rated voltage level of the battery to auto recognition mode through the PC software or the
remote meter, and the controller will be in no-battery mode.

6
1.2 Identification of parts
①
Power Indicator
⑨
Load 2 Terminals
②
Load 1 indicator
⑩
Grounding terminal
③
Load 2 indicator
⑪
RTS interface
④
Error codes
⑫
PV Terminals
⑤
Load ON/OFF and setting
button
⑬
Battery Terminals
⑥
Load 1/Load 2/Prior Mode
enable switch
⑭
Mounting Hole *4
⑦
RS485 communication port
⑮
Battery indicator
⑧
Load 1 Terminals
⑯
PV Indicator
If the remote temperature sensor is not connected to the controller or
damaged, the controller will charge or discharge the battery at the default
temperature setting of 25 ºC(no temperature compensation).

7
1.3 Naming rules
①For MSC4210N and MSC4215N, the rated voltage of the battery supports 24V only. For other MSC-
N types, the rated voltage of the battery supports both 12V and 24V.
1.4 Connection diagram
1.4.1 Battery mode

8
1.4.2 No-battery mode
Set the rated voltage level of the battery to auto recognition mode through the below
methods; the controller will work in no-battery mode (it also can work in battery
mode). In no-battery mode, the PV array will power the load directly.
1) In the [Control Parameter] interface of PC software, select "Self-recognition" for
[Rated Voltage Level] parameter.
2) Set the rated voltage level to [self] through the remote meter. Detail settings refer to
the MT92 user manual.
CAUTION:
1. Only when the power of the PV array is greater than the total power of the load
and the load power does not change drastically; the load will work normally.
2. In the condition of two-way load, when the power of the PV array is lower than the
total power of the loads but can meet the power of load 2, the output of load 2 is
given priority. Load 1 will be turned off and restarted every 30 minutes until it can
work normally.

9
2 Interface
2.1 Indicator
Indicator
Color
Status
Definition
Green
ON solid
PV connection normal ,but low
voltage(low irradiance) from PV, no
charging
Green
OFF
No PV voltage(night time) or PV
connection fault
Green
Slowly
Flashing(1Hz)
PV is charging
Red
Fast Flashing
(4Hz)
PV over voltage
Green
ON solid
Battery normal
Green
Slowly
Flashing(1Hz)
Battery full
Green
Fast Flashing
(4Hz)
Battery over voltage
Orange
ON solid
Battery under voltage
Orange
Slowly
Flashing
Battery type setting
Red
ON solid
Battery over discharged
Red
Slowly
Flashing(1Hz)
Battery over temperature

10
Red
Fast Flashing
(4Hz)
Lithium battery low temperature①
Green
ON solid
Controller normal
Battery type: 12V Sealed
Slowly
Flashing
Battery type: 24V Sealed
Green
ON solid
Load 1 ON
Battery type: 12V Gel
Slowly
Flashing
Battery type: 24V Gel
Green
ON solid
Load 2 ON
Battery type: 12V LFP
Slowly
Flashing
Battery type: 24V LFP
Red
ON solid
Controller over temperature/fault
Load over current/short circuit
Battery type: 12V LNCM
Slowly
Flashing
Battery type: 24V LNCM
All Indicators fast flashing
System voltage error②
①When a lead-acid battery is used, the controller doesn't have the low temperature
protection.
②When a lithium-ion battery is used, the system voltage can't be identified automatically.
2.2 Button
Click
1. Control the load ON/OFF
First: Load 1 OFF, Second: Load 2 OFF;
Third: Load 1 ON; Forth: Load 2 ON.
2 Select battery type （refer to "2.1 Indicator")
Press for 5s
Enter the Battery type setting interface
2.3 Battery type
No.
Battery type
Definition
1
Sealed(default)
Select the battery type according to the indicator
and button.
Select the "User" on MT92 or PC software to set
voltage point.
2
Gel
3
LFP
4
LNCM
5
User

11
2.4 Battery voltage control parameters
Battery parameters
Below values are measured in the 12V/25 ºC system; please double the values in the
24V system.
Battery type
Voltage
parameters
Sealed
GEL
User
Over Voltage
Disconnect Voltage
16.0V
16.0V
9~17V
Charging Limit
Voltage
15.0V
15.0V
9~17V
Over Voltage
Reconnect Voltage
15.0V
15.0V
9~17V
Equalize Charging
Voltage
14.6V
--
9~17V
Boost Charging
Voltage
14.4V
14.2V
9~17V
Float Charging
Voltage
13.8V
13.8V
9~17V
Boost Reconnect
Charging Voltage
13.2V
13.2V
9~17V
VLVR （Low voltage
reconnect voltage）
12.6V
12.6V
9~17V
Under Voltage
Warning Reconnect
Voltage
12.2V
12.2V
9~17V
Under Voltage
Warning Voltage
12.0V
12.0V
9~17V
VLVD （Low Voltage
Disconnect Voltage）
11.1V
11.1V
9~17V
Discharging Limit
Voltage
10.6V
10.6V
9~17V
Equalize Duration
120 minutes
--
0～180 minutes
Boost Duration
120 minutes
120 minutes
10～180 minutes
The following rules must be observed when modifying the parameter values
in User for a lead-acid battery.
A．Over Voltage Disconnect Voltage > Charging Limit Voltage ≥ Equalize Charging
Voltage ≥ Boost Charging Voltage ≥ Float Charging Voltage > Boost Reconnect
Charging Voltage.
B．Over Voltage Disconnect Voltage > Over Voltage Reconnect Voltage
C．Low Voltage Reconnect Voltage > Low Voltage Disconnect Voltage ≥ Discharging Limit
Voltage.
D．Under Voltage Warning Reconnect Voltage>Under Voltage Warning Voltage≥ Discharging

12
Limit Voltage;
E．Boost Reconnect Charging voltage >Low Voltage Reconnect Voltage.
Lithium battery parameters
Below values are measured in the 12V/25 ºC system; please double the values in the
24V system.
Battery
type
Voltage control
parameters
LFP
Li(NiCoMn)O2
User
Over Voltage
Disconnect Voltage
15.6V
13.5V
9~17V
Charging Limit Voltage
14.6V
12.6V
9~17V
Over Voltage
Reconnect Voltage
14.7V
12.7V
9~17V
Equalize Charging
Voltage
14.5V
12.5V
9~17V
Boost Charging Voltage
14.5V
12.5V
9~17V
Float Charging Voltage
13.8V
12.2V
9~17V
Boost Reconnect
Charging Voltage
13.2V
12.1V
9~17V
VLVR （Low voltage
reconnect voltage）
12.8V
10.5V
9~17V
Under Voltage Warning
Reconnect Voltage
12.8V
11.0V
9~17V
Under Voltage Warning
Voltage
12.0V
10.5V
9~17V
VLVD （Low Voltage
Disconnect Voltage）
11.1V
9.3V
9~17V
Discharging Limit
Voltage
10.6V
9.3V
9~17V
The following rules must be followed when modifying the parameter values
in User for a lithium battery.
A．Over Voltage Disconnect Voltage>Over Charging Protection Voltage(Protection
Circuit Modules(BMS))+0.2V;
B．Over Voltage Disconnect Voltage>Over Voltage Reconnect Voltage＝Charging
Limit Voltage ≥ Equalize Charging Voltage＝Boost Charging Voltage ≥ Float
Charging Voltage>Boost Reconnect Charging Voltage;
C．Low Voltage Reconnect Voltage > Low Voltage Disconnect Voltage ≥ Discharging
Limit Voltage.
D．Under Voltage Warning Reconnect Voltage>Under Voltage Warning Voltage≥
Discharging Limit Voltage;
E．Boost Reconnect Charging voltage> Low Voltage Reconnect Voltage;
F．Low Voltage Disconnect Voltage ≥ Over Discharging Protection Voltage
(BMS)+0.2V

13
WARNING: The voltage parameters of a lithium battery can be set according
to the voltage parameters of lithium battery BMS.
WARNING: The required accuracy of BMS shall be no higher than 0.2V. We
will not assume any responsibility for the system abnormal when the
accuracy of BMS is higher than 0.2 v.
2.5 Load output voltage and priority setting
L2
Load 2
Output voltage
Set to OFF
Output 12V
Set to ON
Output 24V
L1
Load 1
Output voltage
Set to OFF
Output 12V
Set to ON
Output 24V
Load working
Modes
(only valid for load 2)
Set to OFF
Charging prior mode (Default)
CPM(Charging Prior Mode)
Set to ON
Load prior mode①
LPM(Load Prior Mode)
①The load prior mode will be enabled when the battery voltage reaches the low voltage disconnect
voltage, and the PV array charging current reaches more than 7A for 10 minutes.
WARNING: Before connecting loads, ensure the voltage level of load is
equal to the output voltage level corresponding to the DIP switch. If the
output voltage level is higher than the load voltage, the load may be
damaged.

14
2.6 Load operation mode
Load
Working
modes
Definition
Load 1
Manual
mode(Default
load ON)
When the battery voltage reaches the Under Voltage
Warning Voltage, the load output will be turned off.
When the battery Voltage reaches the Under Voltage
Warning Reconnect Voltage, the load output will
resume.
Load 2
Manual
mode(Default
load ON)
Set enable switch to CPM(default)
When the battery voltage reaches the Low Voltage
Disconnect Voltage（LVD）, the load output will be
turned off.
When the battery Voltage reaches the Low Voltage
Reconnect Voltage, the load output will resume.
Set the enable switch to LPM①
Mode 1: When the battery voltage reaches the low
voltage disconnect voltage, the charging current of the
PV array reaches more than 7A for 10 minutes, the
load output will be discontinuous. It will turn on for five
minutes and then turn off for ten minutes. When the
battery voltage reaches the low voltage reconnect
voltage, the load output will resume.
Mode 2: When the battery voltage reaches the low
voltage disconnect voltage, the load output will be
turned off. When the battery voltage reaches the low
voltage reconnectvoltage, the load output will resume.
①Check or set the mode 1/2 by the PC software or remote meter only.
2.7 Accessories
CAUTION: All accessories are connected to the controller through the RS485
communication port.
Pin definition for the RS485 communication port
RJ45 crystal head
WARNING: Do not short circuit the positive and negative pins of the RS485
communication port; otherwise, it will damage the controller.
Pin
Definition
Instruction
1/2
+5VDC
5V/200mA
3/4
RS485-B
RS485-B
5/6
RS485-A
RS485-A
7/8
GND
Power GND

15
Accessories
Included
Name
Picture
Instruction
External
temperature sensor
RT-
MF58R47K3.81A
Acquire the controller temperature for
undertaking temperature compensation of
charging and discharging parameters. Plug
the external temperature sensor into the port
❽of the controller.
Optional
Name
Picture
Instruction
Remote
Temperature
Sensor
RTS300R47K3.81A
Acquire the battery temperature for
undertaking temperature compensation of
charging and discharging parameters; the
standard length of thecable is 3m (length can
be customized). RTS300R47K3 is connected
to the controller by port ❽.
NOTE: If the remote temperature sensor is
not connected to the controller or
damaged, the controller will charge or
discharge the battery at 25 ºC(no
temperature compensation).
USB to RS485
cable CC- USB-
RS485-150U
Special cable for connecting RJ45 port of the
controller to USB port of PC, The length of
cable is 1.5 m (length can be customized).
Real-time monitoring of the controller and
software updating through the Solar Station
Monitor software.
Remote Meter
MT92
Display operating status and faults through
the LCD screen, browsing interface, and
configuring parameters by the buttons.
WIFI module
eBox-WIFI-01
After the controller is connected with the
eBox-WIFI-01 through a standard Ethernet
cable, the operating status and related
parameters of the controller can be monitored
by the mobile APP through the WIFI signal.
Bluetooth module
eBox-BLE-01
After the controller is connected with the
eBox-BLE-01 through a standard Ethernet
cable, the operating status and related
parameters of the controller can be monitored
by the mobile APP through Bluetooth signal.

16
3 Installation
3.1 Attentions
Be very careful when installing the batteries. Please wear eye protection when
installing the open-type lead-acid battery, and rinse with clean water in time for
any contact with battery acid.
Keep the battery away from any metal objects, which may cause a short circuit of
the battery.
Acid gas may be generated when the battery is charged. Ensure that the
surrounding environment is well ventilated.
Avoid direct sunlight and rain infiltration when installing it outdoor.
Loose connectors and corroded wires may result in high heat that can melt wire
insulation, burn surrounding materials, or even cause a fire. Ensure tight
connections and secure cables with cable clamps to prevent them from swaying
in moving equipment.
Only charge the lead-acid and lithium-ion batteries within the control range of this
controller.
The battery connector may be wired to another battery or a bank of batteries.
The following instructions are for the use of a single battery. Still, they are also
applicable to systems with a group of batteries.
Select the system cables according to 5A/mm2or less current density.

17
3.2 PV requirements
(1) Serial connection (string) of PV modules
As the core component of the solar system, it is important for the controller to suit
various types of PV modules and to maximize the conversion of solar energy into
electricity. According to the open-circuit voltage (VOC) and the maximum power point
voltage (VMPP) of the MPPT controller, the serial connection of PV modules suitable
for different controllers can be calculated. The below table is for reference only.
MSC2210N/MSC3210N/MSC4210N:
System
voltage
36cell
Voc＜23V
48cell
Voc＜31V
54cell
Voc＜34V
60cell
Voc＜38V
Max.
Best
Max.
Best
Max.
Best
Max.
Best
12V
4
2
2
1
2
1
2
1
24V
4
3
2
2
2
2
2
2
System
voltage
72cell
Voc＜46V
96cell
Voc＜62V
Thin-Film
Module
Voc＞80V
Max.
Best
Max.
Best
12V
2
1
1
1
1
24V
2
1
1
1
1
NOTE: The above parameters are calculated under standard test conditions (STC
(Standard Test Condition)：Module Temperature 25℃, Air Mass1.5, Irradiance
1000W/m2.)
MSC4215N
System
voltage
36cell
Voc＜23V
48cell
Voc＜31V
54cell
Voc＜34V
60cell
Voc＜38V
Max.
Best
Max.
Best
Max.
Best
Max.
Best
12V
4
2
2
1
2
1
2
1
24V
6
3
4
2
4
2
3
2
System
voltage
72cell
Voc＜46V
96cell
Voc＜62V
Thin-Film
Module
Voc＞80V
Max.
Best
Max.
Best
12V
2
1
1
1
1
24V
3
2
2
1
1