Lumiax Magic Series User manual

User Manual
User Manual_Magic series_KC
CE, Rohs, ISO9001:2015
Subject to change without notice!
Magic series
MPPT Solar Controller
12/24/48V，750/1500/3000W
Magic your solar life
Lumiax
www.lumiax.com
1.03.02.10038-1

Contents
1. 2
1.1
1.2 Liability Exclusion
3
3. 4
4.5
4.1
4.2
4. 7
5. 8
5.1 Installation Notes
5.2 Battery cables and battery fuse
5.3 PV cables............................................................................................................................................................9
5.4 Mounting ...........................................................................................................................................................11
6.Operation ....................................................................................................................................14
6.1 LED indicator
6.2 Key function
6.3 Status display
6.4 Menu structure.................................................................................................................................................15
6.5 Operation status display...............................................................................................................................17
6.6 Main menu display .........................................................................................................................................18
6.7 Fault indication.................................................................................................................................................23
7.Troubleshooting,Protections and Maintenance.....................................................................24
7.1 Troubleshooting
7.2 Protection ..........................................................................................................................................................26
7.3 Maintenance .....................................................................................................................................................27
28
8.1 Electrical Parameters
8.2 Mechanical Parameters.................................................................................................................................29
8.3 Environmental Parameters
Safety instructions and waiver of liability ..............................................................................
Safety Instructions
Pruduct Overview.......................................................................................................................
Dimensions..................................................................................................................................
Structure & Accessory...............................................................................................................
Structure
Accessories(Included)....................................................................................................................................7
3 Accessories(Optional)....................................................................................................................................
Installation ..................................................................................................................................
8.Technical Data.............................................................................................................................
2.
1

WARNING: Danger of explosion from sparking.
Danger of electric shock.
Dear Clients,
This manual gives important recommendations for installing
using and so on. Read it carefully in your own interest and pay attention to the
safety recommendations in it please.
Thanks for selecting the Magic series solar controller.
Please take the time to read this user manual, as it will help you take full advantage of the
controller's features. ,
programming,
1.1 Safety Instructions
(1)
There are no user serviceable parts inside the controller. Do not disassemble or attempt to
repair the controller.
It is advised to read this manual carefully before the product is installed and put into use.
(2)
(3)Install the controller at well ventilated places, the controller's heat sink will be very hot during
operation.
(4)Refer to the specifications provided by the manufacturer of the battery to ensure that the
battery is suitable for use with this product. The battery manufacturer's safety instructions should
always be observed.
(5)Protect the solar modules from incident light during installation, e.g. cover them.
(6)Ensure that the connection cables are provided with fuses or circuit breakers.
(7)Please make sure to switch off all connections of the PV array and the fuse/breakers which close
to the battery before the controller installation and adjustment.
(8)Power connections must remain tight to avoid excessive heating from the loose connection.
(9)The installer of the product must provide a means for cable strain relief to prevent the
transmission of stress to the connections.
(10)Do not open the controller casing. Only the terminal cover may be removed by a technical
professional for installation.
1.2 Liability Exclusion
The manufacturer shall not be liable for damages, especially on the battery, caused by use
other than as intended or as mentioned in this manual or if the recommendations of the
battery manufacturer are neglected. The manufacturer shall not be liable if there has been
service or repair carried out by any unauthorized person, unusual use, wrong installation, or
bad system design.
2
1) There are no user serviceable parts inside the controller. Do not disassemble or
attempt to repair the controller.
2) Keep children away from batteries and the charge controller.
CAUTION: Indicates a critical procedure for safe and proper operation of the
controller.
1, Safety instructions and waiver of liability

Innovative Max Power Point Tracking(MPPT) technology, tracking efficiency >99.9%
Full digital technology, high charge conversion efficiency up to 98%
LCD display design, read operating data and working condition easily
LCD can display lastest daily/monthly/yearly charging data, total 5 years
12/24/48V automatic recognition
Liquid, Gel, AGM and Lithium battery for selection
The separate ports for remote temperature sensor and voltage sensor, make battery temperature
compensation and voltage detection more accurate
Automatic power reduction when over-temperature
Relay control the switching signals of external loads and chargers for hybrid power supply system
like solar energy with utility electricity or gas generation
Dual automatic restriction function when exceeding rated charging power and charging current
5-year memory battery voltage and historical charging data
Android APP version for Bluetooth communication
IoT wireless or RS485 communication functions optional
Monthly charging data can be calculated and displayed by grouping and graphs
Modbus protocol based on RS485 standard for remote communication need
Multi-functional AUX port can meet customized requirements
Common positive design, suitable for telecom applications
Perfect EMC & thermal design
Full automatic electronic protect function
Magic series solar controller is based on an advanced maximum power point tracking (MPPT)
technology developed, dedicated to the solar system, the controller conversion efficiency up to
98%. The controller can rapidly track the maximum power point(MPP) of PV array to obtain the
maximum energy of the panel, especially in case of a clouded sky, when light intensity is changing
continuously, an ultra fast MPPT controller will improve energy harvest by up to 30% compared to
PWM charge controllers.
The limitation function of the charging power and current, and automatic power reduction
function fully ensure the stability when works with oversize PV modules and operate under high
temperature environment.
2.1 Outstanding features
2.2 MPPT
MPPT profile
The full name of the MPPT is maximum power point tracking. It is an advanced charging way
which could detect the real-time power of the solar Modulel and the maximum point of the I-V
curve that make the highest battery charging efficiency.
Current Boost
Under most conditions, MPPT technology will "boost" the solar charge current.
MPPT Charging：Power Into the controller (Pmax)=Power out of the controller (Pout)
Iin x Vmp= Iout x Vout
* Assuming 100% efficiency. Actually, the losses in wiring and conversion exist.
If the solar module's maximum power voltage (Vmp) is greater than the battery voltage, it follows
that the battery current must be proportionally greater than the solar input current so that input
and output power are balanced. The greater the difference between the Vmp and battery voltage,
the greater the current boost. Current boost can be substantial in systems where the solar array is
of a higher nominal voltage than the battery as described in the next section.
3
2, Product Overview

High Voltage Strings and Grid-Tie Modules
Another benefit of MPPT technology is the ability to charge batteries with solar arrays of
higher nominal voltages. For example, a 12 Volt battery bank may be charged with a 12-, 24-,
36-, or 48-Volt nominal off-grid solar array. Grid-tie solar modules may also be used as long as
the solar array open circuit voltage (Voc) rating will not exceed the maximum input voltage
rating at worst-case (coldest) module temperature. The solar module documentation should
provide Voc vs. temperature data.
Higher solar input voltage results in lower solar input current for a given input power. High
voltage solar input strings allow for smaller gauge solar wiring. This is especially helpful and
economical for systems with long wiring runs between the controller and the solar array.
An Advantage Over Traditional Controllers
Traditional controllers connect the solar module directly to the battery when recharging. This
requires that the solar module operate in a voltage range that is usually below the module's
Vmp. In a 12 Volt system for example, the battery voltage may range from 10.8-15 Vdc，but
the module's Vmp is typically around 16 or 17V.
Because traditional controllers do not always operate at the Vmp of the solar array, energy is
wasted that could otherwise be used to charge the battery and power system loads. The
greater the difference between battery voltage and the Vmp of the module, the more energy
is wasted.
Contrast with the traditional PWM controller, MPPT controller could play a maximum power
of the solar panel so that a larger charging current could be supplied. Generally speaking, the
MPPT controller's energy utilization efficiency is 15%~20% higher than PWM controller.
Conditions That Limit the Effectiveness of MPPT
The Vmp of a solar module decreases as the temperature of the module increases. In very hot
weather, the Vmp may be close or even less than battery voltage. In this situation, there will be
very little or no MPPT gain compared to traditional controllers. However, systems with
modules of higher nominal voltage than the battery bank will always have an array Vmp
greater than battery voltage. Additionally, the savings in wiring due to reduced solar current
make MPPT worthwhile even in hot climates.
P(W)
10.8V 15V 17V
VP curve
0
I(A)
V(V)
MPP
10.8V 15V 17V
Typical
Battery
Voltage
Range
VI curve
0V(V)
Px Pmax-Px
MPP
PWM
Controller
Operating
Range
Nominal 12 Volt Solar Module I-V curve and output power graph.

2.3 MPPT—Four Charging Stage
Magic series controller has a 4-stage battery charging algorithm for rapid, efficient, and safe
battery charging.
MPPT Charge
In this stage, the battery voltage has not yet reached boost voltage and 100% of available
solar power is used to recharge the battery.
Boost Charge
When the battery has recharged to the Boost voltage setpoint, constant-voltage regulation is
used to prevent heating and excessive battery gassing. The Boost stage remains 120 minutes
and then goes to Float Charge. Every time when the controller is powered on, if it detects
neither over discharged nor overvoltage, the charging will enter into boost charging stage.
Float Charge
After the Boost voltage stage, the controller will reduce the battery voltage to Float voltage
setpoint. When the battery is fully recharged, there will be no more chemical reactions and all
the charge current transmits into heat and gas at this time. Then the controller reduces the
voltage to the floating stage, charging with a smaller voltage and current. It will reduce the
temperature of battery and prevent the gassing, also charging the battery slightly at the same
time. The purpose of Float stage is to offset the power consumption caused by self
consumption and small loads in the whole system, while maintaining full battery storage
capacity.
In Float stage, loads can continue to draw power from the battery. In the event that the
system load(s) exceed the solar charge current, the controller will no longer be able to
maintain the battery at the Float setpoint. Should the battery voltage remains below the boost
reconnect charging voltage, the controller will exit Float stage and return to Bulk charging.
Equalization Charge
Certain types of batteries benefit from periodic equalizing charge, which can stir the
electrolyte, balance battery voltage and complete chemical reaction. Equalizing charge
increases the battery voltage, higher than the standard complement voltage, which gasifies
the battery electrolyte. If it detects that the battery is being over discharged, the solar
controller will automatically turn the battery to equalization charging stage, and the
equalization charging will be 120mins. Equalizing charge and boost charge are not carried out
constantly in a full charge process to avoid too much gas precipitation or overheating of
battery.
U(V)
MPPT
Charge
Boost
Charge
Float
Charge
Equalize
Charge
Night
TIME
13.7V
14.5V
14.8V
Night
Risk of explosion!
Equalizing flooded battery can produce explosive gases, so well
ventilation of battery box is necessary.

4
109
230
339
109
Φ10
Φ6
Φ6
7
3
40
40
Unit:mm
3,Dimensions

MENU OK
+
①
②
③
④
⑤
⑥
⑧ ⑨ ⑩
⑦
RS485 AUX IoT RLY1 RLY2
Component Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Heat Sink
Sheet metal case
LCD
Operating keys
Indicator lights
Grounding point
Terminal cover
Solar module terminals
Battery terminals
External temperature sensor
Battery voltage sensor
Button Cell
RS485 interface
AUX
IoT interface
Load Control Relay1
Utility/Generator Relay2
D
Internal PCBA protection
Display settings and operating status
MENU OK
perating state indication of controller
The case to cover the terminals and wires connections
Connected solar modules
Connected the battery
for
Connect the cable directly to the battery for checking the
battery voltage
issipate controller heat
O
If a grounding point is not already present then this must
be created
Collect temperature information temperature
compensation
Data can still be saved after the battery is disconnected
Communication through RS485 interface
Multi-functional AUX port can meet customized
requirements
Connect with IoT module
Control Load ON/OFF
Control Utility/Generator ON/OFF
4.1 Structure
5
⑰⑯
⑮⑭⑬
⑫
⑪

4.1.1 Battery voltage sensor
" "
" "
4.1.2 Load control relay1 and Utility/Generator relay2
6.6 Main menu display
6.6 Main menu display
For compensating possible cable losses during charging, two sense wires can be connected
to measure voltage directly on the battery. Use wire with a cross-section of 0.75mm² and
insert a 0.1 Amp fuse close to the battery.
During battery charging, the charger will compensate the voltage drop over the DC cables up
to a maximum of 3 Volt. If the voltage drop threatens to become larger than 3V, the charging
current is limited in such a way that the voltage drop remains limited to 3V. The Bat.ext.volt
on the LCD will display --- if the voltage drop exceeds 3 Volt. At this time, you need to
connect the voltage sensor or check whether the wiring is correct.
The relay outputs are potential-free, normally-open contacts. Rated Value：3A/30VDC.
(1) Load control relay1
The initial state of the contacts is normally-open. The relay outputs can be used for switching
devices or loads. Heavy loads connected directly to the battery can be switched using an
additional power relay connected to this relay.
When the battery voltage is lower than the low-voltage protection voltage, the relay will be
turned off. When the battery voltage is higher than the low-voltage recovery voltage, the relay
will be opened again.
(2)Utility/Generator relay2
The initial state of the contacts is normally-close. The relay outputs can be used for
connecting power generation equipment, such as diesel engine and so on.
When the battery voltage is lower than the low-voltage protection voltage + 0.2V, the relay
will be turned on to access to external power generation equipment. When the battery voltage
is higher than the low-voltage recovery voltage, the relay will be turned off again.
You can choose whether to start the automatic maintenance function of the diesel engine.
For specific operations, please refer to .
4.1.3 AUX
Multi-functional AUX port can meet customized requirements. Aux is defined as current
sensor by default. Please customize it if you need other functions.
The current of the external equipment is calculated by setting the parameters of the current
sensor such as the maximum measuring current and the maximum output voltage. After the
correct setting, the external current will be displayed on the LCD screen of the controller.
For specific operations, please refer to .
6
The working time of the diesel shall not be less than 15 minutes each time it is
started.

4.2 Accessories(Included)
Accessory
Local temperature sensor
Battery voltage sensor terminal
AUX terminal
Load control relay1 terminal
Utility/Generator relay2 terminal
Mounting screws
RS485 interface cable
Model
2P-3.81mm
2P-5.08mm
2P-3.81mm
2P-3.81mm
2P-3.81mm
M8*40mm
RJ11*1m
Number
1Pcs
1Pcs
1Pcs
1Pcs
1Pcs
4Pcs
1Pcs
Item
1
2
3
4
5
6
7
1. The connection polarity is irrelevant.
2. If the external temperature sensor is not connected or damaged, the internal
temperature will be used for temperature compensation during charging.
3. If the controller and battery are not located in the same room then an
external temperature sensor for measuring the battery temperature must be
installed.
4.3
4.3.1 Remote Temperature Sensor
Accessories(Optional)
The controller is shipped with a temperature sensor of length 80mm. If you need other
components you need to purchase separately.
The remote temperature sensor can measure the temperature at the battery and use this data
for very accurate temperature compensation. The standard length of the cable is 3m (length
can be customized). The temperature sensor connected via interface ⑩.
4.3.2 IoT module
After the controller is connected with the IoT module through the IoT interface, the
operating status and related parameters of the controller can be changed and monitored by
the mobile APP software or PC program.
Please contact with our sales about IoT wireless communication information.
7
4.1.4 RS485
The charger is equipped with a RS485 port with RJ11 sockets, the RJ11 interface is defined as
follows:
RJ11 for controller
12 3 4 5 6
NC RS485-B RS485-A NC NC NC
Pin No. Definition
1NC
NC
NC
RS485-A
RS485-B
NC
2
4
3
5
6
The RS485 interface on this charger is not galvanically isolated and can not be
grounded. Do not short circuit unused pin (Note NC).

5.1 Installation Notes
Batteries can produce flammable gases. Avoid making sparks, using fire or any naked
flame. Make sure that the battery room is ventilated.
Avoid touching or short circuiting wires or terminals. Be aware that the voltages on
special terminals or wires can be as much as twice the battery voltage. Use isolated tools,
stand on dry ground, and keep your hands dry.
Prevent water from entering the internal controller, outdoor installation should avoid
direct sunlight and rain penetration.
(1)Do not open the controller sheet metal case, only the terminal cover may be removed by
a technical professional for installation.
(2)Before wiring installation and adjustment of controller, Always disconnect the solar
modules and insurance or circuit breaker of battery terminal.
(3)Only to comply with the range of the battery charge controller.
(4)Batteries store a large amount of energy, never short circuit a battery under all
circumstances. We strongly recommend connecting a fuse directly to the battery to avoid any
short circuit at the battery wiring.
(5)
(6)Uses insulated tools and avoid placing metal objects near the batteries.
(7)Be very careful when working with batteries. Wear eye protection. Have fresh water
available to wash and clean any contact with battery acid.
(8)
(9)
(10)After installation check that all connections are tight line, avoid heat accumulation
caused by virtual access danger.
(11)Multiple same models of controllers can be installed in parallel on the same battery bank
to achieve higher charging current. Each controller must have its own solar module(s).
(12)Select the system cables according to 5A/mm² or less current density.
Please read all instructions and precautions in the manual before installing.
It is recommended to remove the acrylic protective film covering the LCD
screen before installation.
5.2 Battery cables and battery fuse
Cable strain relief must be provided, close to battery and PV connectors.
In order to utilize the full capacity of the product, battery cables with sufficient cross section
and a fuse of sufficient current rating should be used.
!
2.Please consult local regulations regarding maximum allowed current carrying capacity
of cables.
1.The battery wire size recommended is for battery terminal without inverter.
Cable Length
2 * 1.5m
2 * 2.5m
2 * 5.0m
Wire Size
16mm²/5AWG
25mm²/3AWG
Not recommended
Rated charge current
60A
Battery Fuse Rating
80A
8
5, Installation

5.3 PV Array
The voltage on the PV input should never exceed 200V under any condition.
The charger will be permanently damaged if the input voltage is too high.
Cable strain relief must be provided, close to PV and battery connectors.
5.3.1 PV cables
As the core component of PV system, controller could be suitable for various types of PV
modules and maximize converting solar energy into electrical energy. According to the open
circuit voltage (Voc) and the maximum power point voltage (Vmpp) of the MPPT controller,
the series number of different types PV modules can be calculated.
The required PV cable cross section depends on array power and voltage. The table below
assumes that maximum PV power has been installed. Cable cross section can be reduced in
case of smaller solar arrays.The best efficiency is reached at a PV input voltage that is twice the
battery voltage. DC circuit breakers or fuses must be installed in the positive and negative PV
cables, to enable isolation of the charger during installation or maintenance.
12V System(Solar array up to 750W)
24V System(Solar array up to 1500W)
Solar array
MPP-Voltage[V]
Solar array
MPP-Voltage[V]
Solar array
MPP-Current[A]
Solar array
MPP-Current[A]
Cable Length
2 * 5m
Cable Length
2 * 5m
Cable Length
2 * 10m
Cable Length
2 * 10m
Cable Length
2 * 20m
Cable Length
2 * 20m
18
36
54
72
90
108
≥126
36
54
72
90
108
≥126
42
21
14
10
8
7
6
42
28
21
17
14
12
16mm²/5AWG
10mm²/7AWG
6mm²/10AWG
4mm²/11AWG
2.5mm²/13AWG
2.5mm²/13AWG
2.5mm²/13AWG
16mm²/5AWG
16mm²/5AWG
10mm²/7AWG
6mm²/10AWG
6mm²/10AWG
4mm²/11AWG
35mm²/2AWG
16mm²/5AWG
16mm²/5AWG
6mm²/10AWG
4mm²/11AWG
4mm²/11AWG
4mm²/11AWG
35mm²/2AWG
25mm²/3AWG
16mm²/5AWG
16mm²/5AWG
10mm²/7AWG
6mm²/10AWG
Not recommended
25mm²/3AWG
25mm²/3AWG
16mm²/5AWG
6mm²/10AWG
6mm²/10AWG
6mm²/10AWG
Not recommended
35mm²/2AWG
35mm²/2AWG
25mm²/3AWG
25mm²/3AWG
16mm²/5AWG
9

According to "Peak Sun Hours diagram", if the power of PV array exceeds the rated charging
power of controller, then the charging time as per the rated power will be prolonged, so that
more energy can be obtained for charging the battery. However, in the practical application,
the maximum power of PV array shall not be greater than 1.2 x the rated charging power of
controller. If the maximum power of PV array exceeds the rated charging power of controller
too much, it will not only cause the waste of PV modules, but also increase the open-circuit
voltage of PV array due to the influence of environmental temperature, which may increase
the probability of damage to the controller rise. Therefore, it is very important to configure the
system reasonably.
5.3.2 PV array maximun power
The MPPT controller has the function of current/power-limiting, that is during the charging
process, when the charging current or power exceeds the rated charging current or power, the
controller will automatically limit the charging current or power to the rated charging current
or power, which can effectively protect the charging parts of controller, and prevent damages
to the controller due to the connection of some over-specification PV modules.
!
charging current of PV array＞Rated charging current of controller" ，the controller will
carry out the charging as per the rated current or power.
If "Actual charging power of PV array＞Rated charging power of controller" or "Actual
10
48V System(Solar array up to 3000W)
Solar array
MPP-Voltage[V] Solar array MPP-Current[A] Cable Length
2 * 5m Cable Length 2 * 10m Cable Length 2 * 20m
72
90
108
≥126
42
34
28
24
16mm²/5AWG
16mm²/5AWG
10mm²/7AWG
16mm²/5AWG
35mm²/2AWG
25mm²/3AWG
16mm²/5AWG
35mm²/2AWG Not recommended
Not recommended
35mm²/2AWG
35mm²/2AWG
!
capacity of cables.
please consult local regulations regarding maximum allowed current carrying

Step 2: Preparing the cables
(1)Label the cable ends with M+, M-, B+ and B-.
(2)Lay the battery and module cables directly next to each other. Do not yet connect the
cables.
(3)Connect the external battery fuse to the "B–" battery cable, in an easily accessible
position close to the battery.
(4)Switch off the external battery fuse: Remove the fuse insert from the fuse holder
(safety fuse) or switch off the DC line circuit breaker and secure it against being switched
on again.
(5)Connect the DC load circuit breaker to the module cables "M-" , in an easily accessible
position close to the controller.
(6)Switch off the DC load circuit breaker and secure it against being switched on again.
(7)Remove the terminal cover (release the 4 fastening screws with a screwdriver).
Step 3: Connecting the battery
Connect the battery cable and external battery fuse to the battery connection of the
controller and to the battery.
We recommend installing the external battery fuse in the "B–" cable and the
current is 1.25 to 2 times the rated current of the controller.
11
5.4 Mounting
Step 1: Determination of Installation Location and Heat-dissipation Space
Do not mount the solar charge controller outdoors or in wet rooms. Do not subject the solar
charge controller to direct sunshine or other sources of heat. Protect the solar charge
controller from dirt and moisture. Mount upright on the wall on a non-flammable substrate.
Maintain a minimum clearance of 15cm below and around the device to ensure unhindered air
circulation. Mount the solar charge controller as close as possible to the batteries.
Mark the position of the solar charge controller fastening holes on the wall, drill 4 holes and
insert dowels, fasten the solar charge controller to the wall with the cable openings facing
downwards.
If the controller is to be installed in an enclosed box, it is important to ensure
reliable heat dissipation through the box.
>15CM
>15CM
COOL AIR
WARM AIR

If the controller is not operating properly or the battery indicator on the
controller shows an abnormality, please refer to "7.2 Troubleshooting".
Step 5: Grounding
This product is a common-positive controller, if any of one positive is grounded, all the
positive terminals of PV and battery will be grounded simultaneously. However, according to
the practical application, all the positive terminals of PV array and battery can also be
ungrounded, but the grounding terminal on its case must be grounded, which may effectively
shield the electromagnetic interference from the outside, and prevent some electric shock to
human body due to the electrification of the case.
Step 6: Connecting the solar module
(1)Safely cover the module (ensure that wind cannot blow off the covering).
(2)Connect the module cable with the (open) DC load circuit breaker to the solar module
connection of the controller and the solar module.
(3)Remove the covering from the solar module.
Step 7: Connecting accessories
(1)Connect the remote temperature sensor cable
Connect the remote temperature sensor cable to the interface and place the other end
close to the battery.
(2)Connect the accessories for RS485 or IoT communication, refer to the accessories list.
Step 8: Supplying the controller with voltage
(1)Please make sure the battery and the solar module have been connected as described
previously.
(2)Fit the terminal cover.
(3)Fit the fastening screws.
(4)Switch on the external battery fuse: Insert the fuse insert into the fuse holder (safety fuse)
or switch on the DC line circuit breaker. The controller automatically starts operating and then
displays the system states.
(5)Switch on the DC load circuit breaker of the solar module, if the PV is charging, the green
charge indicator will flash.
⑪
Step 4: Connecting the battery voltage sensor
The external battery voltage sensor cable allows the controller to directly measure the voltage at
the battery. This voltage value can be used for compensation of voltage drops across the battery
cables. This means that the voltage measurement is not affected by powerdependent voltage
drops across the battery cables.
A 2-pin plug with screw terminals for connecting the sensor cable is supplied with the device.
A cable with a cross-section of 0.14-1.5 mm² (AWG 28-16) can be used.
The battery voltage sensor cable is not supplied with the device.
1. The connection polarity is irrelevant.
2. Install a fuse(＜1A) in the connection between the battery voltage sensor cable
and the battery. This protects the cable from burning in the case of a short-circuit in
the battery voltage sensor cable.
12
The positive pole of the controller and the shell cannot be grounded at the
same time

MENU OK
+
Fuse
DC Breaker
Grounding
Fuse
Load Relay1
Utility/Generator Relay2
Remote Battery Voltage
sensor cable
DC/AC
Inverter
AC/DC
Charger
Remote Temperature
sensor cable
RS485 AUX IoT RLY1 RLY2
Wiring Diagram
13

6.1 LED indicator
LED Status
Green
(PV Panel)
Yellow
(Battery)
Key
6.2 Key function
6.3 Status display
MENU
OK
Enter or exit settings menu.
Stop blinking the selected number to confirm the change
Navigates one menu level down.
Causes the selected numeral to blink so that it can be modified.
Moves the selection bar or the display content upwards/downwards.
Increases/decreases a setting value by 1 step.
Function
2019-01-01 12:30
0W 0.0A 52.0V
485
The status display consists of data, time, communication mode, PV power/ current and
battery voltage.
The figures show the respective basic settings when
battery chargingis switched on and when the charging
is switched off.
①Date and time can be set.
②Communication mode can be set, default RS485.
If Bluetooth is connected to the mobile phone, the LCD
will display the Bluetooth icon.
③The solar module is illuminated , the controller
recognizes as daytime.
The solar module is not illuminated , the controller
recognizes as nighttime.
④The arrow symbol indicates charging of the battery.
⑤Actual charging power.
⑥Actual charging current.
⑦Battery voltage.
2019-01-01 12:30 485
2000W 21.8A 59.2V
①②
③
③
④
⑤ ⑥ ⑦
Function
On
On
Solar panel is connected, but not charged
PV reverse connection or PV overvoltage protection
Off
Off
Fast flash(0.1/0.1s)
Fast flash(0.1/0.1s)
Slow flash(0.5/2s)
Slow flash(0.5/2s)
Flash(0.5/0.5s)
MPPT charging
Float Charging
Equal or Boost Charging
Over voltage protection
Battery is normal
Battery voltage is low
Low voltage protection
14
6, Operation

6.4 Menu structure
Bat.ext.volt. : 28.0V
Bat. volt. : 28.0V
Bat. Curr. : 37.5A
Bat. power : 1050W
1.System setting
2.Battery setting
3.Data logger
4.Information
1.1 Language
1.2 Set time
1.3 Communication mode
1.4 Backlight time
1.5 Set diesel
1.6 Set AUX
1.7 Factory reset
2.1 Bat. type : LIQ
2.2 Bat. volt : AUTO
2.3 LVD : 11.2V
2.4 LVR : 12.0V
2.5 Equal volt : 14.8V
2.6 Boost Volt : 14.5V
2.7 Float volt : 13.7V
3.1 Total in
3.2 Battery volt
MT6020-Pro
APP: V1.3.5
SYS : V1.5.1
HW: V1.0
PV volt. : 54.0V
Accumulation : 80KWH
Running days : 60D
Temperature : 30℃
Relay01 : ON
Relay02 : OFF
Ext.curr. : 30A
1.System settings
2.Battery setting
3. Data logger
4. Information
MENU
Static display
Main menu
MENU
OK OK
OK
Next
page
Next
page
Next
page
OK
OK OK
OK
MENU
MENU
MENU
MENU
MENU
!For the sake of clarity, only the OK, MENU and operating keys are illustrated.
15
0
D
2
4
6
8
10
100WH Total: 25KWH
510 1 5 20 25 3 0
0
H
2
4
6
8
10
10WH Total: 600WH
4812 1 6 20 24

3.1 Total in
3.2 Battery voltage
OK OK
OK
MENU
MENU
MENU
MENU
MENU MENU
MENU
1.1 Language
1.2 Set time
1.3 Communication mode
1.4 Backlight time
1.5 Set diesel
1.6 Set AUX
1.7 Factory reset
1.System settings
1.1 Language
1.5 Set diesel
Language : English
Diesel generator
Auto maint. : ON
Set time
2019-01-01
12:30
AUX setting
Max in curr. :1000A
Max out volt.: 10.0V
Backlight time
030s
Clear data
Reset BLE password
Reset
Communication set
Comm. mode:RS485
Device ID : 001
1.2 Set time
1.6 Set AUX
1.3 Communication mode
1.4 Backlight time
1.7 Factory reset
OK OK
OK
OK
OK
OK
OK
OK
OK
OK
MENU
MENU
MENU
MENU
MENU
MENU
MENU
MENU
MENU
MENU
MENU
MENU
MENU
MENU
MENU
MENU
3.1 Total in
3.2 Battery voltage
3. Data logger
OK
MENU
0
Y
7
14
21
28
35
100KWH Tot al: 1.5MWH
2023 2021 2022 2020 2019
0
D
2
4
6
8
10
10K WH Total : 300KW H
60 1 20 18 0 240 3 00 360
0
D
2
4
6
8
10
100 WH Total: 25KWH
510 1 5 20 25 3 0
0
H
2
4
6
8
10
10W H Total: 600WH
4812 1 6 20 24
16
DATE MAX MIN
08/31 28.8V 25.0V
08/30 28.8V 24.9V
08/29 28.6V 24.5V
08/28 28.8V 24.6V
08/27 27.6V 23.5V
08/26 28.0V 24.0V
08/25 28.8V 24.5V

6.5 Operation status display
Bat.ext.volt. : 28.0V
Bat. volt. : 28.0V
Bat. Curr. : 37.5A
Bat. power : 1050W
Press or to enter this operation status interface.
Bat.ext.volt
Battery voltage measured via the battery voltage sensor cable,
" "
in volts (V).
If the battery voltage sensor is not connected or the voltage drop
exceeds 3V, this item will display --- . At this time, you need to connect
the voltage sensor or check whether the wiring is correct.
Bat. volt
The battery voltage measured at connection "B+/B–", in volts (V).
Bat.curr
The current flowing from the controller to the battery, in Amperes(A).
Bat. Power
Actual power being used for charging the battery, in watts (W).
PV volt
Voltage present at PV array connection, in volts(V).
Accumulation
Actual power being used for charging the battery after the controller is
working, in watt-hour (WH) or kilowatt-hour(KWH).
Running days
Number of operating days since initial commissioning of the device.
Temperature
This temperature is tested by external sensor for battery temperature
compensation. If no external temperature sensor is connected, the
temperature inside the controller will be displayed and used for
temperature compensation during charging, in Celsius degree(℃).
Relay 01
Switching state of load control relay 1.
Relay 02
Switching state of Utility/Generator relay 2.
Ext.curr
Aux interface is connected with current transformer to display the
detected current of external equipment.
Graphical overview representing the energy input in the last 24 hours.
Memory of the information on the amount of input energy in WH or
KWH, the vertical axis of the figure varies according to the maximum
charging energy.
Graphical overview representing the energy input in the last 30 days.
Memory of the information on the amount of input energy in WH or
KWH, the vertical axis of the figure varies according to the maximum
charging energy.
PV volt. : 54.0V
Accumulation : 80KWH
Running days : 60D
Temperature : 30℃
17
Relay01 : ON
Relay02 : OFF
Ext.curr. : 30A
0
D
2
4
6
8
10
100WH Total: 25KWH
510 1 5 20 25 30
0
H
2
4
6
8
10
10WH Total: 600WH
4812 1 6 20 24