MSC-4020 - Controller Mestic - Free user manual and instructions

Product type	MPPT solar charge controller
Brand	Mestic
Model	MSC-4020
System voltage	12V / 24V (auto-detection)
Rated charge current	20 A
Maximum solar panel power	250 W (12V) / 520 W (24V)
Maximum PV open circuit voltage	100 V (protection at 95 V, recovery at 90 V)
MPPT voltage range	(battery voltage + 2 V) to 72 V
MPPT tracking efficiency	> 99 %
Charge conversion efficiency	85 % - 98 %
Supported battery types	Sealed lead-acid (SLD), gel (GEL), flooded (FLD), lithium (LI), custom (USE, USE LI)
Communication	TTL (9600 bps), RS485 (RJ45, adjustable baud rate), Bluetooth and CAN optional
Display	LCD with parameter display and alarm codes
Dimensions (L x W x H)	181 x 118 x 61.7 mm
Weight	650 g
Protection level	IP32
Self-consumption	≤ 10 mA
Cooling mode	Natural dissipation via aluminum fins
Ambient temperature range	-35 °C to 66 °C
Maintenance	Check radiator cleanliness, tighten connections, replace damaged cables
Safety	Protection against PV overvoltage, polarity reversal, short circuit, overload, overheating, etc.
Grounding	Common negative

Frequently Asked Questions - MSC-4020 Mestic

What types of batteries can I use with the MSC-4020 controller?

The controller supports sealed lead-acid (SLD), gel (GEL), flooded (FLD), lithium (LI) batteries, and custom types via USE and USE LI modes. The default setting is SLD.

How to choose the battery type?

Press and hold the [ENTER] key for 3 seconds to access the settings menu. Navigate with [SELECT] to 'Battery type', then choose the appropriate type (SLD, GEL, FLD, LI, USE or USE LI). Confirm with [ENTER].

What is MPPT technology and what are its advantages?

The MPPT (Maximum Power Point Tracking) allows the controller to track the maximum power point of the solar panel in real time, increasing charging efficiency by 15-20% compared to a conventional PWM regulator.

How to connect the controller?

Connection order: 1) Battery (BAT+ and BAT- terminals), 2) Solar panel (PV+ and PV-), 3) Load (LOAD+ and LOAD-). Ensure correct polarity and install a fuse or circuit breaker on the battery cable.

What to do if the display shows an error code, e.g., E1?

Refer to the 'System alarms' chapter of the manual. For example, E1 indicates a battery over-discharge: the load output is cut off until the battery voltage rises to the recovery threshold.

Can I use the controller with lithium batteries?

Yes, select type 'LI' for a standard lithium battery or 'USE LI' for custom parameters. The system voltage should be set to 12V or 24V according to your installation.

How to set the load operating mode?

In the settings menu, go to 'Load mode'. You can choose from 18 modes: pure light control, light + timer (1-14h), manual, debug, or always on. The default mode is manual.

Is it possible to reset the controller to factory settings?

Yes. In the menu, select 'Factory reset' (F02) and press [ENTER]. The controller will revert to its default settings.

How to clean and maintain the controller?

Disconnect all power sources. Use a dry cloth to clean the casing and cooling fins. Check for corrosion on terminals and tighten connections if necessary.

Can the controller be installed outdoors?

It is recommended to install it indoors, away from direct sunlight and water. Its IP32 protection rating protects against solid objects >12.5 mm, but not against water splashes.

USER MANUAL MSC-4020 Mestic

Technical line drawing of a mechanical component with no visible text or symbols

graph TD
    A["Main menu (voltage)"] --> B["14.40 V"]
    C["Main menu (current)"] --> D["20.00 V"]
    B --> E["Battery voltage"]
    D --> F["Battery voltage"]
    E --> G["12.00 V"]
    F --> H["12.00 V"]
    G --> I["Charging current"]
    H --> J["Charging current"]
    I --> K["PV voltage"]
    J --> L["PV current"]
    K --> M["17.00 V"]
    L --> N["17.00 V"]
    M --> O["Load mode"]
    N --> P["Load mode"]
    O --> Q["Operating day"]
    P --> R["Operating day"]
    Q --> S["Device temperature"]
    R --> T["Device temperature"]
    S --> U["Operating day"]
    T --> V["Operating day"]
    U --> W["Operating day"]
    V --> X["Operating day"]
    W --> Y["Operating day"]
    X --> Z["Operating day"]
    Y --> AA["Operating day"]
    Z --> AB["Operating day"]
    AA --> AC["Operating day"]
    AB --> AD["Operating day"]
    AC --> AE["Operating day"]
    AD --> AF["Operating day"]
    AE --> AG["Operating day"]
    AF --> AH["Operating day"]
    AG --> AI["Load Current"]
    AH --> AJ["Load Current"]
    AI --> AK["Load Current"]
    AJ --> AL["Load Current"]
    AK --> AM["Load Current"]
    AL --> AN["Load Current"]

Equalizing charging 146 v Boost charging 144 v Floating charging 138 v Over-discharge voltage 111 v Over-discharge reconnect voltage 126 v Changing reconnect voltage 132 v

8.5 Systeem spanning

graph LR
    A["ON on sc"] --> B["OF on sc"]

8.13 Over-ontlading vertraging

@mestic MPPT Solar Charge Controller

Model: MSC-4010
Productafmeting: 155*99*41.7mm
Montage gatafstand: 137°77mm Vaste gatenpositie: φ4.5mm

18.2 MSC-4020

BLACK EMISTIC @emestic MPPT Solar Charge Controller

Model: MSC-4020
Producta/meting: 181*118*61.7mm
Montage gatafstand: 161*96mm Vaste gal positie: φ4.5mm

20 21

NL

18.3 MSC-4030

@mestic MPPT Solar Charge Controller

PV+ PL RDT LOKE RDT+LOKE+ RoHS

Model: MSC-4030
Productafmeting: 187*133*72mm
Montage gatafstand: 174*100mm
Vaste gatenpositie: φ5mm

18. System wiring diagram

18.1 System wiring diagram

@mestic MPPT Solar Charge Controller

mestic

NL

Solar charge controller MPPT MSC-4010/-4020/-4030

Technical line drawing of a mechanical component with no visible text or symbols

Relax... it's mestic

User instructions EN

Thank you for choosing our products!

Safety Instructions

1. Since the applicable voltage of the controller exceeds the safety limit of human body, please read the manual carefully before operation and operate this controller after the safety operation training is completed.
2. Since no part is required to be maintained or repaired inside the controller, please do not disassemble and repair the controller by yourself.
3. Please install the controller indoors to avoid exposure of components and keep water away from the controller.
4. Since the cooling fin will be very hot during operation, please install the controller in a well-ventilated place.
5. Suitable fuse or circuit breaker is recommended to be equipped outside the controller.
6. Before installing and adjusting the wiring of the controller, make sure to disconnect the wiring of the photovoltaic array and the fuse or circuit breaker near the accumulator battery terminals.
7. After installation, check whether all wiring is tightly connected to avoid the danger of heat accumulation due to loose connection.

Warning: Indicates that this operation is dangerous and safety preparations must be made before operation.

Attention: Indicates destructive operation.

Tips: Indicates suggestions and tips to the operator.

EN

1. Product introduction

1.1 Product overview

The Shiner series controller adopts the industry-leading MPPT to achieve the maximum energy tracking for the solar panel, that is, it can quickly and accurately track the maximum power point of the solar battery on any condition, and obtain the maximum energy of the solar panel in real time, significantly improving the energy utilization rate of the solar system. It is widely used as the core control component in the off-grid PV systems to manage the work of solar panels, batteries, and loads. Besides, it has complete software and hardware fault detection and protection functions to avoid damage to product components caused by installation errors and system faults to the greatest extent.

1.2 Product feature

◆ Adopt MPPT with tracking efficiency up to 99.9%.
◆ Support full-power charging and discharging at one time.
◆ Support multiple battery types such as sealed battery, gel battery, flooded battery, lithium battery and user-defined battery.
◆ Support lithium battery and lead-acid activated battery.
◆ Support the charging current setting.
◆ Support full-charging setting.

◆ Support temperature compensation.

◆ Support 17 load operating modes.

◆ Support capacitive loads and inductive loads.

◆ Save historical data for 200 consecutive days.

◆ Support RS485 communication of standard Modbus protocol with adjustable baud rate.

◆ Support TTL communication of standard Modbus protocol with fixed baud rate.

◆ Support Bluetooth communication (optional).

◆ Support CAN communication (optional).

◆ Possess complete charging and discharging protection mechanisms for overvoltage, overcurrent, overload, over-temperature, short circuit, etc.

- Adopt high-quality aluminum radiator and high-temperature derating treatment to ensure reliable and efficient operation in various operating conditions.

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1.3 Appearance and interface description

① @mestic MPPT Solar Charge Controller ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪

S/N	Name	S/N	Name
1	LCD	7	Battery positive interface
2	Button	8	Load positive interface
3	Solar panel positive interface	9	TTL communication interface
4	Solar panel negative interface	10	Temperature sensor interface
5	Battery negative interface	11	RS485/CAN communication interface
6	Load negative interface

2. Introduction of Maximum Power Point Tracking

The Maximum PowerPoint Tracking (MPPT) system is an advanced charging technology with more energy output from the solar batteries by adjusting the operating state of the electrical modules. Due to nonlinearity of the solar battery array, there is a maximum power point on its curve. The PWM charging technology used in the traditional controller cannot charge the battery continuously at the point, so it cannot obtain the maximum energy of the solar panel. Instead, the solar controller with MPPT can always track the maximum power point of the array, so as to charge the battery with maximum energy. For example, for the 12V solar system, since the peak-to-peak voltage (Vpp) of the solar battery is about 17V, but the battery voltage is about 12V, therefore, when the common charge controller is charging the battery, the voltage of the solar battery is about 12V, that is, the solar battery does not fully exert its maximum power.

EN

The MPPT controller can overcome the problem and adjust the input voltage and current of the solar panel in real time to reach the maximum input power. Moreover, compared with the traditional PWM controller, it can exert the maximum power of the solar battery to provide a larger charging current. Generally speaking, it can improve the energy utilization rate by 15%\~20% than the PWM controller.

Fig. 2-1 Battery panel output characteristic curve

The maximum power point often changes due to the different ambient temperature and lighting conditions. And the MPPT controller is able to adjust the parameters in real-time under different conditions, thus making the system status always near the maximum operating point. The whole process is completely automatic without any adjustment.

I (A) As light intensity decreases, the current decreases. And as light intensity decreases, the open-circuit voltage decreases

Fig. 2-2 Relationship between output characteristic of battery panel and light intensity

Fig. 2-3 Relationship between output characteristic of battery panel and temperature

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1. Technical parameters

Product model	MSC-4010	MSC-4020	MSC-4030
Static power consumption	≤10mA
Battery Type	SLDGEL/FLD/LIUSE/USELI, SLD as default
System voltage	12V/24V
Battery operating voltage range	8V-32V
Rated charging current	10A	20A	30A
Maximum solar panel power	130W/12V260W/24V	260W/12V520W/24V	400W/12V800W/24V
Maximum PV open-circuit voltage	60V (55V protection, 50V recovery)		100V (95V protection, 90V recovery)
MPPT operating voltage range	(Battery voltage +2V)-45V		(Battery voltage +2V)-72V
MPPT tracking efficiency	>99%
Charging conversion efficiency	85%-98% (10%-100% of rated power)
Rated load current	10A	20A
Load operating mode	Light control, light control + time control, manual mode (default), debugging mode, normally open
Charging current setting	√
Full-charging setting	√
Constant voltage output setting	√
Charging temperature compensation of load-acid battery	√
Temperature unit setting	√
Overload/Short-circuit protection	√
TTL communication	Baud rate: 9,600 bps
RS485 communication	RJ45 interface, with power output 5V/200 mA. The baud rate is 9,600 bps by default, adjustable.
Bluetooth communication	Optional
CAN communication	RJ45 interface, optional (RV-C protocol)
Historical data Save the last 200 days of historical data
Protection function	PV overvoltage protection, PV reverse connection protection, PV short-circuit protection, right reverse charging protection, input power limit protection, over-temperature protection, load short-circuit protection, overload protection, battery over-voltage/over-discharge protection, battery reverse connection protection, battery end short circuit protection.
Grounding type	Grounding of common negative electrode
Operating ambient temperature range	-35°C~65°C
Protection grade	IP32
Cooling mode	Natural heat dissipation
Dimension	155°98'41.7mm	181°118'51.7mm	187°133'72mm
Weight	350g	650g	1200g

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4. Charging

4.1 Charging of lead-acid battery

Select such battery types as SLD/FLD/GEL/USE, and select the appropriate system voltage.

As shown in Fig. 4-1, the charging stages of lead-acid battery are: MPPT charging, constant voltage charging (equalizing/boost/floating charging), and current-limiting charging. The constant voltage charging is divided into three stages: equalizing charging, boost charging and floating charging [MPPT charging] When the battery voltage has not reached the target constant voltage value, the controller will perform MPPT charging. When the battery voltage reaches the constant voltage value, it will automatically exit MPPT charging and switch to constant voltage charging (equalizing/boosting/floating charging).

[Equalizing charging] Regular equalizing charging is good for some batteries. Equalizing charging is mainly to make the charging voltage of battery higher than the standard supplementary voltage, besides, it can vaporize the battery electrolyte to balance the battery voltage and complete relevant chemical reaction. Equalizing charging and boosting charging are not repeated during one full charging to avoid excessive gas evolution or overheating of the battery.

Notes: 1) Since the equalizing charging of floored lead-acid battery produces explosive gas, the battery compartment must be well ventilated.

2) Although the equalizing charging elevates the battery voltage, it may damage the level of sensitive DC loads, therefore, it is necessary to verify that the allowable input voltage of all loads in the system is greater than the set battery voltage value in equalizing charging.

3) Excessive charging and excessive gas evolution may damage the battery plate and cause the active substances on the battery plate to fall off. Besides, excessive high equalizing charging voltage or excessive long equalizing charging duration may damage the battery. Please set relevant parameters according to the specifications of the battery used in the system.

[Boost charging] The duration of boost charging is 2 h (default). When the duration reaches the set value, the system will switch to floating charging.

[Floating charging] Floating charging is the last constant voltage charging stage in the charging cycle of lead-acid battery. The controller keeps the charging voltage constant at the floating charging voltage. At this stage, the battery is charged with a very weak current to ensure that the battery is in full-charging. When the battery voltage is as low as the reconnect voltage of boost charging, the system will exit the floating charging stage and re-enter the next charging cycle.

4.2 Charging of lithium battery

Select such battery types as LI/USE LI, and select the system voltage from 12V/24V.

As shown in Fig. 4-2, the charging stages of lithium battery are: MPPT charging/boost charging/current-limiting charging.

[MPPT charging] When the battery voltage does not reach the target constant voltage value, the controller conducts MPPT charging to charge the battery with maximum solar power, when reaches, it automatically switches to boost charging.

[Boost charging] In the boost charging stage of lithium battery, when the battery voltage is lower than the boost charging voltage, the system conducts MPPT charging or current-limiting charging, when reaches, it switches to boost charging.

05

Fig. 4-1 Charging curve of lead acid battery

Fig. 4-2 Charging curve of lithium battery

5. Battery Temperature Sampling and Control

1) Connect the temperature sensor to the corresponding temperature interface to achieve the high and low temperature protection for the battery and the temperature compensation for the charging voltage of lead-acid battery (no temperature compensation for the lithium battery); if the temperature sensor is not connected, the default temperature is 25^ C;

2). For the battery-related temperature protection/recovery value, please refer to the description in "12. System alarm". The wiring method is shown in the figure:

@mestic MPPT Solar Charge Controller BATTERY

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6. Load output

1) [Recovery strategy of load short-circuit protection]:
① Automatic recovery: the self recovery time of the first protection is 10s, the second is 15s, the third is 20s, the fourth is 25s, the fifth is 30s, with more than five times restore the load output the next day;
② Manual recovery: press and hold the "SELECT" button for 2s on the system alarm interface, and the load will be recovered and output;
2) [Overload protection strategy]: 10s protection for the load greater than 1.25 times the rated load; 5s protection for the load greater than 1.5 times the rated load; 1s protection for the load greater than 2 times the rated load;
3) Please refer to "8.11-8.13" for load related settings.

1. Menu
   

18 17 16 13 15 14 ① ② ③ ④ MPPT BOOST FLOAT EQUALIZE FULL 88:88 kWAhS KPS %V°C°F CC ACT DEV BATT LVR LVD MODE SC 88 VS AUTO ⑤ ⑥ ⑦ ⑧ ⑨

No.	Description	No.	Description
1	Daytime icon	10	Battery type
2	Night icon	11	Function character
3	Charging stage	12	Unit symbol
4	System voltage	13	Load icon
5	Parameter setting	14	Discharging state
6	Communication icon	15	Battery
7	Parallel communication Voltage/current
8	Bluetooth icon	17	Charging state
9	System alarms	18	Solar panel

07

7.1 View menu

graph TD
    A["Main menu (voltage)"] --> B["14.40 V"]
    C["Main menu (current)"] --> D["20.00 V"]
    E["Battery voltage"] --> F["12.00 V"]
    G["Charging current"] --> H["20.00 V"]
    I["System alarms"] --> J["EO"]
    K["Load mode"] --> L["15 MODE"]
    M["Battery temperature"] --> N["25.0 °C"]
    O["Device temperature"] --> P["25.0 °C"]
    Q["Operating day"] --> R["002d"]
    S["Dischargingmperethoursult/day"] --> T["0000 °A"]
    U["Discharge capacity of the day"] --> V["0000 °A"]
    W["Load Current"] --> X["20.00 °A"]
    Y["PV voltage"] --> Z["17.00 V"]
    AA["PV current"] --> AB["10.00 °C"]
    AC["Generated energy of the day"] --> AD["0000 °W"]
    AE["Dischargingmperethoursult/day"] --> AF["0000 °A"]

1) Alternative display between (voltage) and (current) on the main menu every 10s.
2) Short press the [SELECT] key to browse the menu. If there is no key operation for 5s, it will automatically return to the main menu.
3) Long press [ENTER] for 3s on any interface to enter the parameter setting page.

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EN

EN

8. Parameter setting

8.1 Battery parameter list

Battery parameters
Setting/Voltage\Battery Type	Sealed Lead-Acid SLD	Gel lead-acid battery GEL FLD	Flooded lead-acid battery	Lithium battery LI	Custom lead acid battery USE	Custom lithium battery USE LI
Overvoltage disconnect voltage^1	16.0V	16.0V	16.0V	16.0V	Boost voltage +2V	Boost voltage +2V
Equalizing voltage^1	14.6V	-	14.8V	--	9~17V	--
Boost voltage^1	14.4V	14.2V	14.6V	14.4V	9~17V	9~17V
Float charge voltage^1	13.8V	13.8V	13.8V	-	9~17V	--
Boost charging reconnect voltage^1	13.2V	13.2V	13.2V	13.2V	9~17V	9~17V
Over-discharge restoring voltage^1	12.6V	12.6V	12.6V	12.6V	9~17V	9~17V
Under-voltage alarming voltage^1	12.0V	12.0V	12.0V	12.0V	9~17V	9~17V
Over-discharge voltage^1	11.1V	11.1V	11.1V	11.1V	9~17V	9~17V
Over-discharge cutoff voltage^1	10.6V	10.6V	10.6V	10.6V	9~17V	9~17V
Over-discharge delay	5s	5s	5s	5s	5s	5s
Equalizing charging interval	30 days	--	30 days	--	30 days	--
Equalizing charging duration	120 min	--	120 min	--	120 min	--
Boost charging duration	120 min	120 min	120 min	--	120 min	--
Temperature compensation factor mV/°C/2V	-3	-3	-3	--	-3	--
Note:1 The above values are the parameters at 25°C/12V; if it is the system of 24V/36V/48V , relevant voltage points shall be automatically multiplied by 2/3/4.

8.2 Parameter setting list

Function Setting range	Default
Battery Type SLD/GEL/FLD/L/USE	USE LI SLD
Equalizing charging voltage2	9V~17V Available for USE only
Boost charging voltage3	9V~17V	Available for USE and USE LI only
Float charge voltage4	9V~17V Available for USE only
Boost charging reconnect voltage5	9V~17V	Available for USE and USE LI only
Over-discharge restoring voltage6	9V~17V	Available for USE and USE LI only
Over-discharge voltage7	9V~17V	Available for USE and USE LI only
System voltage 12/24/AUTO AUTO
Charging current 0-rated current (C: no charging) Rated current
Full-charging setting 0-10 A, 0: lum the function off 0 0
Full-charging setting	on: constant voltage output in no load on the battery terminaloF: no output in no load on the battery terminal	oF
Light control voltage8	5-11V	5V
Light control delay 60-3.600s 60s
Load mode 0-17	15
Load short-circuit protection	on: open load short-circuit protectionoF: close load short-circuit protection	on
Over-discharge delay	1-60s	5s
Temperature unit	°C: Celsius/F: Fahrenheit	°C
RS485 communication baud rate	1200~115200bps	9600bps
Device address	1-247	1
System restart	F01	Function key
Factory data reset	F02	Function key
Clear historical data	F03	Function key
Note:1: 24V/36V/48V battery system, automatically multiply by 2/3/4 according to the set value to get the actual control value.

EN

EN

8.3 Type of battery

Please refer to "8.1 and 8.2" for setting.

8.4 Equalizing charging\boost charging\floating charging\charging reconnect voltage\over-discharge reconnect voltage\over-discharge voltage

The option can only be set when the battery type is "USE" or "USE LI".

Equalizing charging 146 v Overdischarge voltage 111 v VD Boost charging 144 v Over-discharge reconnected voltage 126 v VD Floating charging 138 v Charging reconnected voltage 132 v

8.5 System voltage

When the system voltage changes, the system voltage icon on the main page will flash, prompting the user to reboot for effective operation.

8.6 Charging current

1) [No charging]: Set 0
2) [Limit charging current] Set an arbitrary value from 1 to rated charging current in steps of 1A.

EN

8.7 Full-charging setting

1) [Off]: Set 0
2) [On]: Select the appropriate current value between 1-10A
Full-charging condition: When the constant voltage charging duration of lithium battery reaches the set duration or the lead-acid battery is in float charging after the equalizing charging or the boost charging is finished, and the charging current is less than the set current value, the system will stop charging after 1 minute. and the "FULL" icon will light up on the screen.
Charging recovery condition: The battery voltage is less than the boost charging reconnect voltage, the system will recover charging, and the "FULL" icon will light off on the screen.

8.8 Constant voltage output of lead acid battery

Constant voltage output without battery

No output without battery

ON ACT ↔ OF ACT

8.9 Light control voltage

1) [Light control on]: The solar panel voltage is less than 5V*N
2) [Light control of F]: The solar panel voltage is greater than 6V*N (N=1/2)

8.10 Light control delay

Minimum duration required to meet the light control on or off condition.

8.11 Load mode

EN

LCD screen number	Load mode Description
0 Pure light control	When the solar panel voltage is less than the Light control ON voltage with a duration is more than the light control delay, turn on the load:When the solar panel voltage is greater than the light control OFF voltage with a duration is greater than the light control delay, turn off the load.
1~14	After the duration during which the solar panel voltage is less than the light control ON voltage is greater than the light control delay, turn on the load. After the load has been operating for the set time, turn off the load.After the duration during which the solar panel voltage is greater than the light control OFF voltage is greater than the light control delay, turn off the load (light control prevails)
15	Manual mode(default) Short press [ENTER] key to turn on/off the load (not affected by light control)
16	Debugging mode When the solar panel voltage is less than the light control ON voltage, turn on the load immediatelyWhen the solar panel voltage is greater than the light control OFF voltage, turn off the load immediately
17	Normal on mode The load is always on (in case of battery over-voltage, battery over-discharge, load short-circuit,overload,battery over-temperature, or battery low-temperature, the load will turn off the output)

8.12 Load short-circuit protection switch

Some inductive loads or capacitive loads will produce high current at the moment of start-up, which will easily trigger load short-circuit protection, resulting in failure to turn on the load. This function can be disabled when the system cannot be started (Note: After this function is disabled, short circuit at load side of the controller is prohibited!)

graph LR
    A["on"] --> B["lightbulb"]
    B --> C["oF"]
    C --> D["dot symbol"]

8.13 Over-discharge delay

After the battery voltage is lower than the over-discharge voltage, the controller turns off the delay time for the load. (Note: only the type of custom battery can be set)

8.14 Temperature unit

The unit is centigrade "C" 25.0 °C DEV BATT ↔ The unit is Fahrenheit "F" 77.0 °F DEV BATT

13 14

8.15 RS485 communication baud rate

The RS485 communication baud rate can be modified according to actual needs.

8.16 Equipment address

The device communication address can be modified according to actual needs.

8.17 System restart

Single press [ENTER], 'F01' flashes; single press [ENTER] again, the controller will reboot.

8.18 Factory reset

Reset the controller to factory default settings in accordance with "8.17".

8.19 Historical data cleaning

Clear the historical data of the controller in accordance with "8.17".

EN

EN

9. TTL communication

1) Default baud rate: 9,600 bps; check bit: none; data bit: 8 bit; stop bit: 1 bit
2) Communication power supply output specification: (8.5V±1V): 100mA

S/N	Definition
1	VCC: communication power supply output
2	RX: controller data receiving end
3	TX: controller data transmitting end
4	GND

10.RS485

1) RS485 communication:
Default baud rate: 9,600 bps; parity bit: none; data bit: 8 bit; stop bit: 1 bit
Interface type: RJ45, communication power supply output specification: 5V/200mA
2) RJ45 interface communication line sequence definition:

S/N Definition ① CAN_L ② CAN_H ③ NC ④ NC ⑤ Power ground/signal ground ⑥ D- ⑦ D+ ⑧ Positive terminal

Note: NC represents an empty pin, which means that the pin is not connected.

11. CAN communication(Optional)

1) CAN communication: support RV-C protocol

12. Key

[Select]: short press to switch browsing menu and set data increment;

Press and hold the "System Alarm" Interface for 2s to clear the "Load Short Circuit/

Overload Protection" fault code.

[Enter]: press and hold for 3s to enter/exit parameter setting;

Short press: short press on/off load in menu browsing interface (manual mode);

In the setting menu interface, short press for parameter modification and confirmation.

EN

13. System alarms

System alarms	Meaning	Description
E0	Normal system	No action
E1 Battery over-discharge		Turn off load output, after the battery voltage rises to the over-discharge reconnect voltage, relieve over-discharge to restore load output
E2 Battery over-voltage		Stop charging, check and find out the cause of high battery voltage. The charging will be automatically restored after the battery voltage is lowered
E3	Battery under-voltage warning	Battery voltage below the under-voltage warning threshold, warning only
E4	Load short-circuited Turn off load output
E5 Load over-current		Turn off load output, and perform delay protection by a multiple of rated current
E6	Over-temperature protection of device	When the internal temperature is higher than the set temperature, start the constant temperature control; Charging is prohibited when the temperature is higher than 75°C, and charging is resumed when the temperature is lower than 75°C.
E7	Battery over-temperature protection	Charging will be stopped when the battery temperature is above 65°C, and automatically resumed when it is below 60°C.
E10 Solar panel over-voltage		Charging is stopped, and then automatically resumed when the solar panel voltage is below the safety limit
E15 Lead acid battery is not connected		In lead-acid battery mode, the battery is damaged or not connected.
E16	Battery high temperature discharging protection	Load output will be turned off when the battery temperature is above 75°C and resumed when it is below 70°C.
E17	Battery low temperature discharging protection	Load output will be turned off when the battery temperature is below -35°C and resumed when it is above -30°C
E18	Overcharge protection	Charging is stopped and then resumed 10s after the battery voltage is lowered
E19	Battery low temperature charging protection	Charging will be stopped when the battery temperature is below -35°C and resumed when it is above -30°C
E30	Charging and discharging disabled by system setting	Off by default (set relevant registers by protocol)
E31	Charging overvoltage, overcurrent and reverse current protection etc.	After the abnormal conditions are removed, the equipment will recover automatically

EN

1. Common problems and solutions

Phenomenon Troubleshooting
LCD screen does not light up	Check whether the battery and solar panel are properly connected and whether the LCD connection cable has a poor connection
There is voltage in the solar panel, there is no voltage output from the battery side, and code E1/E15 is displayed	The battery is not detected at the lead-acid battery end, there is no voltage output from both ends of the battery. Connect the battery to return to normal or turn on the lead-acid battery activation switch
12V/24V/36V/48V normal voltage battery is connected, the battery icon on the LCD screen flashes slowly, and code E1 is displayed	Check the battery system voltage, or set it to automatic identify and reboot the controller
The system voltage 12V/24V/36V/48V icon on the screen flashes	Set system voltage change, prompting the user to reboot the system for the change to take effect
The controller fails to charge	Check whether there is wrong wiring, whether the solar panel voltage exceeds the rated value, whether the battery is over-voltage, whether the LCD screen displays any error code of internal over-temperature, external over-temperature, external lithium battery low temperature, or lead-acid battery open-circuit, and whether it displays E7/E10, etc.
Charging power does not reach the rated value	Perform system current limiting and thermostatic control; Check to see if the system has reset charging current
Other problems or exceptions difficult to resolve	Try to reboot (F01) or reset controller (F02), and reset relevant parameters again as per system configurations. Be careful
Fail to start some loads	Try enabling the load short-circuit function after checking that the wiring is correct
The screen displays "full", and charging stops	Charging stops as the charging cut-off current conditions are met. When the voltage is below the boost charging reconnect voltage, the charging will be automatically resumed
There is a system alarm code See "12. System alarms" for details

15. Product Installation

15.1 Installation precautions

Be careful when installing battery. Wear protective goggles when installing a flooded lead-acid battery. Once in contact with the battery acid, please rinse with water immediately.
◆ Keep away from metal objects to prevent short-circuit of battery.
The battery may produce acid gas when charging. Make sure that the ambient environment is well-ventilated.
◆ The battery may produce combustible gas. Stay away from sparks.
When installing outdoors, avoid direct sunlight and rain seeping.
The falsely connected connection points and corroded wires may cause great heat, melt the wire insulation, burn the surrounding materials, and even cause fire. Therefore, it is necessary to ensure that all connectors are tightened, and the wires are preferably fixed with ties to avoid shaking of the wires during mobile applications loose connector.

EN

When connecting the system, the output voltage of the components may exceed the human body safety voltage, therefore, use insulated tools and keep your hands dry.
The battery terminals on the controller can be connected either to a single battery or a battery pack. The subsequent instructions are for a single battery, but they are also applicable to systems with a battery pack.
◆ Please follow the safety recommendations of the battery manufacturer.
◆ The system connection cables selected shall have a current density ≤4A/mm².
◆ Ground the ground terminal of the controller.
When installing the battery, it is forbidden to reverse the battery connection, which may cause irreversible damage.

15.2 Installation steps

Wiring and installation must meet the requirements of national and local electrical codes. Wiring specifications shall be selected according to the rated current, generally, 5 A/mm ^2 .

Step 1: Select an installation location

Do not install the controller in a place with direct sunlight, high temperature, or where water can easily enter, and make sure the controller is well ventilated.

Step 2: Fix suspension screws

Mark the mounting position according to the mounting dimensions of the controller, drill two mounting holes of suitable size at the two marks and fix the screws on the two mounting holes.

Step 3: Fix the controller

Align the controller fixing holes with the two pre-fixed screws to hang the controller up, and then fix the two screws below.

Step 4: Open the front cover of the controller, wire, and then close the front cover.

Hot air @mestic MPPT Solar Charge Controller Cold air

EN

16. Protection Functions

◆ Over-temperature protection of device
When the internal temperature of the controller exceeds the set value, the charging power will be automatically lowered or the charging will even be stopped, further slowing the rise in internal temperature of the controller.
◆ Battery over-temperature protection
Battery over-temperature protection requires an external battery temperature sampling sensor. Charging will be stopped when the battery temperature is detected to be too high, and will be automatically resumed when the battery temperature drops to 5°C below the set value for 2s.
◆ Input over-power protection
When the battery panel power is greater than the rated power, the controller will limit the charging power within the rated power range to prevent excessive current from damaging to the controller, and the controller will enter current-limited charging.
◆ PV input side too high voltage protection
When the voltage at the input side of the PV array is too high, the controller will automatically cut off PV input.
◆ PV input reverse-connection protection
The controller will not be damaged if the polarity of the PV array is reversed and will return to normal after the wiring error is corrected.
◆ Reverse charging protection at night
Prevent the battery from discharging through solar battery at night.

17. System Maintenance

In order to maintain the optimal operating performance of the controller for a long time, it is recommended that the following items are regularly checked.

Make sure that the airflow around the controller is not blocked, and remove any dirt or debris from the radiator.
◆ Take corrective actions timely after any fault or error is found.
◆ Check whether there is corrosion, insulation damage, high temperature or burning/discoloring at terminals, case distortion, etc., and repair or replace timely if any.
◆ Check whether there is any exposed or broken wire or wire with poor insulation, and repair or replace timely if any.
◆ Check whether there is dirt, nesting insects or corrosion, and clean timely if any.

Warning: There is a risk of electrical shock! Before carrying out checks or operations above, make sure that all power supplies for the controller are disconnected!

Any non-professional personnel is prohibited from carrying out such operations.

EN

18. Product Dimensions

18.1 MSC-4010

@mestic MPPT Solar Charge Controller

18.2 MSC-4020

@mestic MPPT Solar Charge Controller

Model: MSC-4010

Product dimension: 155*99*41.7mm

Mounting hole spacing: 137*77mm

Fixed hole position: φ4.5mm

Model: MSC-4020

Product dimension: 181*118*61.7mm

Mounting hole spacing: 161*96mm

Fixed hole position: φ4.5mm

18.3 MSC-4030

atmestic MPPT Solar Charge Controller

Model: MSC-4030
Product dimension: 187*133*72mm
Mounting hole spacing: 174*100mm
Fixed hole position: φ5mm

T1 Temp. PS+ PS- BAT- LOAD- BAT+ Load+ Re400

1. Bedradingsschema systeem

19.1 Bedradingsschema systeem

@mestic MPPT Solar Charge Controller

21 22

EN

mestic

EN

Solar charge controller MPPT MSC-4010/-4020/-4030

Made in P.R.C - Imported by

Protection of the environment

This symbol attached to the product means that it is an appliance whose disposal is subject to the directive on waste from electrical and electronic equipment (WEEE). This appliance may not in any way be treated as household waste and must be subject to a specific type of removal for this type of waste. Recycling and recovery systems are available in your area (waste removal) and by distributors. By taking your appliance at its end of life to a recycling facility, you will contribute to environmental conservation and prevent any harm to your health.

mestic®

Solarladeregler MPPT MSC-4010/-4020/-4030

Technical line drawing of a mechanical component with no visible text or symbols

Relax... it's mestic

User instructions EN

ON ACT ↔ OF ACT

Hot air emestic MPPT Solar Charge Controller Cold air

DE

@mestic MPPT Solar Charge Controller

18.2 MSC-4020

@mestic MPPT Solar Charge Controller

Model: MSC-4010

Produktabmessungen: 155*99*41.7mm

atmestic MPPT Solar Charge Controller

T1 Treg. PS+ PS- BAT- LOAD- BAT+ LOAD+ Read

Model: MSC-4030

Produktabmessungen:

187*133*72mm

@mestic MPPT Solar Charge Controller

21 22

DE

mestic

DE

Solarladeregler MPPT MSC-4010/-4020/-4030

Technical line drawing of a mechanical component with no visible text or symbols

Relax... it's mestic

User instructions EN

graph TD
    A["Main menu (voltage)"] --> B["14.40 V"]
    C["Main menu (current)"] --> D["20.00 V"]
    B --> E["Battery voltage"]
    D --> E
    E --> F["Charging current"]
    F --> G["20.00 V"]
    G --> H["PV voltage"]
    H --> I["17.00 V"]
    I --> J["PV current"]
    J --> K["10.00 V"]
    K --> L["Generated energy of the day"]
    L --> M["00.00 W·h"]
    M --> N["Charging temperature/day"]
    N --> O["00.00 W·h"]
    O --> P["Load Current"]
    P --> Q["20.00 V"]
    Q --> R["Discharge capacity of the day"]
    R --> S["00.00 W·h"]
    S --> T["Operating day"]
    T --> U["002d"]
    U --> V["Discharging temperature/day"]
    V --> W["00.00 W·h"]

8.4 Equalizing charging\boost charging\floating charging\charging

reconnect voltage\over-discharge reconnect voltage\over-discharge voltage

Equalizing charging 146 v Boost charging 144 v Floating charging 138 v Over-discharge voltage 111 v Over-discharge reconnected voltage 126 v Charging reconnected voltage 132 v

8.5 Système Tension

ON ACT ↔ OF ACT

@mestic MPPT Solar Charge Controller

18.2 MSC-4020

@mestic MPPT Solar Charge Controller

Modèle : MSC-4010

@mestic MPPT Solar Charge Controller

@mestic MPPT Solar Charge Controller

21 22

FR

mestic®

Technical line drawing of a mechanical or electrical component with no visible text, numbers, or symbols.

Relax... it's mestic

User instructions EN

graph TD
    A["7.1 Ver el menü"] --> B["With menu (voltage)"]
    A --> C["With menu (current)"]
    B --> D["14.40 V"]
    C --> E["20.00 V"]
    D --> F["Battery voltage: 12.00 V"]
    E --> G["Battery voltage: 12.00 V"]
    F --> H["Charging current: 20.00 V"]
    G --> I["Charging current: 20.00 V"]
    H --> J["PV voltage: 17.00 V"]
    I --> K["PV current: 17.00 V"]
    J --> L["Load mode: 15 m/s"]
    K --> M["Load mode: 15 m/s"]
    L --> N["Battery temperature: 250 mC"]
    M --> O["Battery temperature: 250 mC"]
    N --> P["Device temperature: 250 mC"]
    O --> Q["Device temperature: 250 mC"]
    P --> R["Operating day: 002d"]
    Q --> S["Operating day: 002d"]
    R --> T["Discharging pump/ounm/day: 0000 m³/h"]
    S --> U["Discharging pump/ounm/day: 0000 m³/h"]
    T --> V["Discharge capacity of the day: 0000 m³/h"]
    U --> W["Discharge capacity of the day: 0000 m³/h"]
    V --> X["Load Current: 20.00 V"]
    W --> Y["Load Current: 20.00 V"]

8.4 Equalizing charging\boost charging\floating charging\charging reconnect voltage\over-discharge reconnect voltage\over-discharge voltage

Equalizing charging 146 v Boost charging 144 v Floating charging 138 v Over-discharge voltage 111 v Over-discharge reconnected voltage 126 v Charging reconnected voltage 132 v

8.5 Sistema tensión

ON ACT ↔ OF ACT

graph LR
    A["on sc"] --> B["off sc"]
    B --> C["Output"]

@mestic MPPT Solar Charge Controller

18.2 MSC-4020

@mestic MPPT Solar Charge Controller

Model: MSC-4010

@mestic MPPT Solar Charge Controller

T1 Temp. PS+ PS- BAT- LOAD- BAT+ LOAD+ Load

@mestic MPPT Solar Charge Controller

21 22

ES

mestic

ES

Controlador de carga solar MPPT MSC-4010/-4020/-4030

Technical line drawing of a mechanical component with no visible text or symbols

Relax... it's mestic

User instructions EN

I (A) Al diminuire bell-intensilla lumhoss, Is corrente diminusce. U (V)

graph TD
    A["Main menu (voltage)"] --> B["14.40 V"]
    C["Main menu (current)"] --> D["20.00 V"]
    B --> E["Battery voltage"]
    D --> E
    E --> F["Charging current"]
    F --> G["20.00 V"]
    G --> H["PV voltage"]
    H --> I["17.00 V"]
    I --> J["PV current"]
    J --> K["10.00 V"]
    K --> L["Generated energy of the day"]
    L --> M["00.00 V*"]
    M --> N["Charging power output/day"]
    N --> O["00.00 V*"]
    O --> P["Discharge capacity of the day"]
    P --> Q["00.00 V*"]
    Q --> R["Load Current"]
    R --> S["20.00 V"]
    S --> T["Operating day"]
    T --> U["002d"]
    U --> V["Discharging power output/day"]
    V --> W["00.00 V*"]
    W --> X["Discharge capacity of the day"]

Equalizing charging 146 v Boost charging 144 v Floating charging 138 v Over-discharge voltage 111 v Over-discharge reconnect voltage 126 v Charging reconnect voltage 132 v

Some inductive loads or capacitive loads will produce high current at the moment of start-up, which will easily trigger load short-circuit protection, resulting in failure to turn on the load. This function can be disabled when the system cannot be started (Note: After this function is disabled, short circuit at load side of the controller is prohibited!)

graph LR
    A["ON"] --> B["Lightbulb"]
    B --> C["OF"]

8.13 Over-discharge delay

After the battery voltage is lower than the over-discharge voltage, the controller turns off the delay time for the load. (Note: only the type of custom battery can be set)

8.14 Temperature unit

The unit is centigrade "°C" 250 °C ↔ The unit is Fahrenheit "F" 770 °C DEV BATT DEV BATT

13 14

IT

Note: NC represents an empty pin, which means that the pin is not connected.

@mestic MPPT Solar Charge Controller

18.2 MSC-4020

@mestic MPPT Solar Charge Controller

Model: MSC-4010

@mestic MPPT Solar Charge Controller

T1 Temp. P9+ P5 BAT LOAD BAT+ LOAD+ Load

@mestic MPPT Solar Charge Controller

21 22

IT

mestic®

Technical line drawing of a mechanical or electrical component with no visible text, numbers, or symbols.

Relax... it's mestic

User instructions EN

Fig. 2-1 Karakteristisk curve for batteripanelets output

Fig. 4-2 Opladningskurve for litiumbatteri

Equalizing charging 146 v EVALUE Boost charging 144 v Floating charging 138 v Over-discharge voltage 111 v U/D Over-discharge reconnect voltage 126 v U/R Charging reconnect voltage 132 v

8.5 System spending

ON ACT ↔ OF ACI

graph LR
    A["ON on sc"] --> B["OF on sc"]

8.13 Overafladning forsinkelse

14.Common problems and solutions

@mestic MPPT Solar Charge Controller

Model: MSC-4010

Produktdimension: 155*99*41,7mm

Afstand mellem monteringshuller:137*77mm

Fast hulposition: φ4.5mm

18.2 MSC-4020

@mestic MPPT Solar Charge Controller

Model: MSC-4020

Produktdimension: 181*118*61,7mm

Afstand mellem monteringshuller: 161*96mm

Fast hulposition: φ4.5mm

18.3 MSC-4030

atmestic MPPT Solar Charge Controller

T1 Temp. PS+ PS- BAT- LOAD- BAT+ LOAD+ Resid

Model: MSC-4030
Produktdimension: 187*133*72mm
Afstand mellem monteringshuller:174*100mm
Fast hulposition:φ5mm

19. Ledningsdiagram for systemet

19.1 Ledningsdiagram for systemet

@mestic MPPT Solar Charge Controller

21 22

DK

mestic®

DK

Solar laderegulator MPPT MSC-4010/-4020/-4030

Technical line drawing of a mechanical component with no visible text or symbols

Relax... it's mestic

User instructions EN

graph TD
    A["Main menu (voltage)"] --> B["14.40 V"]
    C["Main menu (current)"] --> D["20.00 V"]
    B --> E["Battery voltage"]
    D --> E
    E --> F["Charging current"]
    F --> G["20.00 V"]
    G --> H["PV voltage"]
    H --> I["17.00 V"]
    I --> J["PV current"]
    J --> K["10.00 V"]
    K --> L["Generated energy of the day"]
    L --> M["00.00 V*"]
    M --> N["Charging power output/day"]
    N --> O["00.00 V*"]
    O --> P["Discharge capacity of the day"]
    P --> Q["00.00 V*"]
    Q --> R["Load Current"]
    R --> S["20.00 V"]
    S --> T["Operating day"]
    T --> U["002d"]
    U --> V["Discharging power output/day"]
    V --> W["00.00 V*"]
    W --> X["Discharge capacity of the day"]

Equalizing charging 146 v Boost charging 144 v Floating charging 138 v Over-discharge voltage 111 v Over-discharge reconnect voltage 126 v Charging reconnect voltage 132 v

8.5 System spänning

ON ACT ↔ OF ACT

8.9 L jusstyrning spänning

graph LR
    A["ON on sc"] --> B["OF on sc"]

@mestic MPPT Solar Charge Controller

18.2 MSC-4020

@mestic MPPT Solar Charge Controller

Model: MSC-4010

Produktdimension: 155*99*41,7mm

@mestic MPPT Solar Charge Controller

T1 Temp PS+ PS- BAT- LOAD- BAT+ LOAD+ Resist

Model: MSC-4030
Produktdimension: 187*133*72mm
Avstånd mellan monteringshål: 174*100mm
Fast halposition: φ5mm

1. System wiring diagram
   18.1 System wiring diagram
   

@mestic MPPT Solar Charge Controller

21 22

SE

mestic

SE

Solar laddningsregulator MPPT MSC-4010/-4020/-4030

Technical line drawing of a mechanical or electrical component with no visible text, numbers, or symbols.

Relax... it's mestic

User instructions EN

Fig. 4-1 Ladckurve for blybatteri

Fig. 4-2 Ladekurve for litiumbatteri

graph TD
    A["Main menu (voltage)"] --> B["14.40 V"]
    C["Main menu (current)"] --> D["20.00 V"]
    B --> E["Battery voltage"]
    D --> E
    E --> F["Charging current"]
    F --> G["20.00 V"]
    G --> H["PV voltage"]
    H --> I["17.00 V"]
    I --> J["PV current"]
    J --> K["10.00 V"]
    K --> L["Generated energy of the day"]
    L --> M["00.00 V*"]
    M --> N["Charging temperature"]
    N --> O["Device temperature"]
    O --> P["25.0 V"]
    P --> Q["Operating day"]
    Q --> R["002d"]
    R --> S["Discharging temperature"]
    S --> T["Discharge capacity of the day"]
    T --> U["Load Current"]

NO

Equalizing charging 14.6 v Boost charging 14.4 v Floating charging 13.8 v Over-discharge voltage 11.1 v Over-discharge reconnected voltage 12.6 v Charging reconnected voltage 13.2 v

8.5 System spenning

ON ACT ↔ OF ACT

8.11 Last inn -modus

NO

@mestic MPPT Solar Charge Controller

Model: MSC-4010

Produktdimensjon: 155 * 99 * 41,7 mm

Avstand mellom monteringshull: 137 *77 mm

@mestic MPPT Solar Charge Controller

Model: MSC-4020

Produktdimensjon: 181 * 118 * 61,7mm

Avstand mellom monteringshall: 161 * 96 mm

atmestic MPPT Solar Charge Controller

T1 Temp PS PS BAT LOAD BAT+ LOAD+ Read

Model: MSC-4030
Produktdimension:187*133*72mm
Avstand mellom monteringshall: 174*100mm
Fast hullposisjon:φ5mm

@mestic MPPT Solar Charge Controller

21 22

NO

mestic®

NO

Solar ladekontroller MPPT MSC-4010/-4020/-4030

Euro Accessoires hereby declares that the MSC-4010/4020/4030 device complies with the basic requirements and other relevant regulations listed in the European Electromagnetic Compatibility Directive (2014/30/EU) and the Low Voltage Directive (2014/35/EU). A full declaration of conformity can be requested from the address on the back cover.

DE