3DS MAX Series User manual

MAX series
Solar Controller
12/24V，10/20A
CE, Rohs, ISO9001:2015
User Manual
User Manual_Max series_NJ
Subject to change without notice!
1.3.03.03.0031

1. Overview
2. Safety instructions and waiver of liability
2.1 Safety Instructions
3. Dimensions（unit: mm）
Unit：mm
30
80
142
Page 1 of 10 pages
Dear Clients,
Thank you for purchasing our MAX series solar controller. This product manual provides some
impor tant advice related to the controller, including installation, programming and
troubleshooting. Please read this manual carefully before using this product.
Outstanding features:,
LCD display design, read operating data and
working condition easily.
12/24 automatic recognition.
Built-in over-temperature protection
mechanism, the temperature exceeds the set
value to the charging current drop
operation。
Automatic limit function of rated charging
current.
Flexible System battery selection: Liquid, Gel,
AGM and Lithium.
Lead-acid batter y charging in four stages:
PWM charging is programmable to prevent
system failure caused by BMS.
Short-circuit protection is programmable to
prevent output shutdown when opening the
capacitive or inductive loads.
Small size, PID algorithm adopt to control the
voltage output, make the control more stable
and accurate.
The optical control point voltage and
charging voltage can be set.
Perfect EMC & thermal design.
fast charge, boost charge, equalization
charge, float charge.
MAX1024-U/MAX2024-U
this manual to indicate potentially dangerous
The following symbols are used throughout
conditions or mark important safety instructions.
Please take care when meeting these symbols.
dangerous condition. Use extreme
WARNING: Indicates a potentially
caution when performing this task.
for safe and proper operation of the
CAUTION: Indicates a critical procedure
inside the controller. Do not disassemble
the charge controller.
WARNING:
1) There are no user serviceable parts
or attempt to repair the controller.
3) Keep children away from batteries and
place because the heat sink temperature is
2) Install the controller in a well-ventilated
2.2 Liability Exclusion
on the battery, caused by use other especially
manufacturer are neglected. The manufacturer
The manufacturer shall not be liable for damages,
than as intended or as mentioned in this manual
or if the recommendations of the battery
shall not be liable if there has been service or
repair carried out by any unauthorized person,
Solar charge controller MAX series User Manual
controller.
very high.
unusual use, wrong installation, or bad system
design.
30
MAX1024/MAX2024

When connecting the PV-Module make sure to cover it from incident sun light. Double check the PV-
exceed the maximum permissible input current of the Charge Controller (please refer to Module will not
the section Technical Date). Connect the solar module connection cable to the correct polarity of the left
pair of terminals on the solar charge controller (with the solar module symbol).
We strongly recommend connecting a fuse directly to the battery terminal to protect from any short ciruct
circuit. PV-modules generate current whenever light shines on them. The generated currentin the battery
is directly proportional to the light intensity. Even low levels of light, will deliver the PV-Modules no load,
protect PV-modules from any incident light during installation; full voltage. It is thus utterly advisable to
insulated tools, and make sure that the wire cross Never touch uninsulated cables(ends),only use electric
section is adequate for the PV module operating currents. Connections conducted in the must always be
Connect the battery cable to the two terminals in the middle of the controller with the correct polarity
Warning: High pressure danger! Solar cell modules may produce a high open circuit voltage,
to disconnect the circuit breaker or fuse before wiring, the wiring process must be careful.
4. Conection and grounding
4.1 Conection
WARNING: Risk of explosion! In case the battery's positive and negative terminals or leads
get ever in touch, i.e. short-circuited, a fire or explosion hazard might get triggered.
Always pay maximum when handling batteries and related circuits.
CAUTION:
2.If a power inverter is used the system, it should be connected to the battery
via a DC relay. Do not connect it to the controller's load terminals.
1.Should the temperature sensor be short-circuited or damaged, the controller
can charge or discharge the battery at the default 25 ºC.
1st step: Connect loads
charge controller(with the lamp symbol). To avoid the presence of any tension on the cable/wires, please
Connect the load cable with the correct polarity of the right-hand side pair of terminals on the solar
before connecting them to the charge controller.connect these first to the load
2nd step: Connect the battery
(the controller is marked with the battery icon).
1)Should your system be nominal 12 Vdc, make sure the battery voltage is between the 10.0and 15.0 Vdc
2)For 24 Vdc nominal voltage, the battery voltage should be within the 20.0 to 30.0 Vdc range;
If the polarity is correct, the LCD on the controller will begin to display those.
3rd step: Connect the solar module
4th step: Final work
Tighten all cables connected to the controller and remove all the remains around the controller (leaving
avoid of minimum 15 cm).
4.2 Grounding
Be aware that the positive terminals of controller are interconnected and therefore bear the same electrica
potentia. If anyl grounding is required, always do this on the positive wires/terminals.
Solar charge controller MAX series User Manual
Page 2 of 10 pages
⑤
⑥
①
②
③④
Inverter
Relay
sequence as described below.
voltage range;
The load end is prohibited from accessing the inductive load.

6.操作及显示
Mode
5.1
Other description Units are placed after the numbers:
Hours (H), Minutes (M), Seconds (S), Voltage (V)
Load on, discharge
Indicate low voltage protection、25%、50%、
5. Operation
Page 3 of 10 pages
Key function
Operating
Browse interface Short press OK.
Static display Press the MENU and OK key at the same time for 1s, the LCD screen will lock
the interface. unlock and start scrolling.Press the OK key , the LCD interface will
Setting parameter Press the MENU key for 1s to enter the setting mode when the icon
interface, and exit automatically after 30s.appears on the display
Load On/Off When the controller is working in street lamp mode, press the MENU key for
load, press the MENU key again or 1min later the load will 3s to turn on the
5.2 LCD Display
5.2.1 Status Description
Item Icon Status
PV array Daytime, charging
Battery Battery capacity
Load
Solar charge controller MAX series User Manual
be turned off.
75%、100%

Page 4 of 10 pages
5.2.2 The interface automatically cycles in the displayed sequence
5.2.3 Press OK to browse the interface
A B C D E F G H I J K L M N O P Q R
S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9
Solar charge controller MAX series User Manual

5.3 Parameters setting
When the icon appears in the display interface, it means that the parameters can be set.
5.3.1 PV voltage&Charging current
Display PV voltage
AGM
When choosing Liquid, GEL or AGM for battery type,the parameters of boost, equalization and float
charge voltage can be set by pressing the button. The range of parameters is as follows. following The
14.5V 14.8V 13.7V
When the battery type is lithium battery, the lithium overcharge protection voltage can be set by
Page 5 of 10 pages
Status Icon Description
5.3.2 Battery type
Battery type
GEL(Default)
Liquid
Lithium
Display
1.Charging Voltage Parameters(Liquid, GEL, AGM)
Display charging current
Choosing Lithium,AGM, GEL or for battery typeLiquid
Charging stage Boost Equalization Float
Default charging voltage
2.Charging Voltage Parameters(Lithium)
Solar charge controller MAX series User Manual
pressing the button.
MENU key for 1s, then icon flashes, Press the OK key to raise the parameters, and Press the
Charging Voltage Range 14.0~14.8V 14.3~15.0V 13.2~14.0V
voltage parameters are multiplied by a factor of 2.are 25℃/12V system parameters, 24V displayed values
press the MENU key to lower the parameters.Press and hold the MENU key for 1 second to exit.
Battery over voltage
E02
E03
E04
E06
E07
E01
E05
Battery level shows full, battery flashes, the LCD screen
displays E04.
Battery low voltage
PV level shows high, PV frame flashes, the LCD screen
screen displays E03.
PV over voltage
Battery level shows empty, battery frame flashes, the LCD
displays E06.
PV over current Overcurrent, PV frame flashes, the LCD screen displays
Load over current Load off, load icon flashes, the LCD screen displays E02.
Load short circuit Load off, load icon flashes, the LCD screen displays E01.
Over temperature The charge and discharge are off, icon ℃ flashing, the
LCD screen displays E05.
E07.
5.2.4 Fault indication
E08
PV short circuit PV short circuit screen displays , PV frame flashes, the LCD
E08.

Note: The controller automatically calculates the overcharge recovery voltage
5.3.3 Overcharge protection voltage (lithium battery)/boost voltage (other battery types)
protection voltage on the current screen.Setting range:12/24V:10.1~32.0V(default 14.4V)
1.When the battery type is lithium battery,you can set the lithium battery overcharge
2. When the battery type is AGM/GEL/LIQ , you can set the boost voltage on the current
Page 6 of 10 pages
according to the overcharge protection voltage, and the overcharge recovery
voltage is ≈(0.97*overcharge protection voltage).
screen.The equalization voltage is boost voltage +0.3V(12V system)/+0.6V(24V system).
Solar charge controller MAX series User Manual
The float voltage is boost voltage -0.8V/1.6V.
Note: The GEL battery is not have equalization.
5.3.4 Low voltage protection
1.When the battery type is lithium battery,you can set the lithium battery low voltage
protection voltage on the current screen. Setting range：9.0~30.0V(default 10.6V)
Note: The controller automatically calculates the low-voltage recovery voltage
according to the set low-voltage protection voltage. The low-voltage recovery
voltage is ≈1.11* low-voltage protection voltage.
2. When the battery type is GEL/LIQ/AGM,
Setting range：10.8~11.8.V/21.6~23.6V(default 11.2/22.4V)
Note: The default low-voltage recovery voltage of the controller is 0.8V/1.6V
higher than the low-voltage protection voltage. To reduce the low-voltage
recovery voltage, lower the low-voltage protection voltage first.
5.3.5 Load mode
Universa type controller, 24H output (default).
When the controller is set to 24H output mode, there is always an output at the
Note: The test function is not valid in this state
Dusk to Dawn Mode (D2D)
regardless of the charging or discharging state (except the protection state).load end
Lighting time at night (time 1~12 hours); 01 to 12 corresponds to 1 to 12 hours
Lighting time in the day (time 1~12 hours); 01 to 12 corresponds to 1 to 12 hours
Light control priority, when the PV voltage > , then shut Optically controlled spot
the load.down
The load is turned off at night, and the load is turned off after the lighting period
is performed during the day.

5.3.6 Optically controlled spot
The controller automatically identifies day and night by measuring the open circuit
voitage of the solar panel. Depending on the location and the different solar panels,
5.3.7 Optical delay
When the night comes, the controller identifies the day/night threhold voltage.
Through modifying the "day/ night threhold delay" to put off the lighting time.
Page 7 of 10 pages
the user can set different day/night threhold voltage).
Liquid, GEL, AGM:The voltage setting 3.0~10.0V/6.0~20.0V(default:8.0/16.0V). range:
Setting range is 0~60 seconds (step length is 5 seconds) and 1~30 minutes (step
length is 1 minute) (the default setting is 0 seconds).
Solar charge controller MAX series User Manual
Lithium:The voltage setting 3.0~20.0V(default:8.0V). range:
5.3.9 PWM charging Settings (Lithium batteries)
PWM has the potential to cause noise and interference in the system, especially
when using lithium batteries with BMS, PWM charging may trigger BMS protection
,resulting in system failure. Therefore, the customer can choose to turn off the
PWM, in this mode once the batteryvoltage is charged to the preset voltage, the
controller immediately stops charging, until the battery voltage drops, and then
restart the charging.PoN is enabled,PoF is disabled,and the default value is enabled.
5.3.8 Short circuit protection
When the inductive or capacitive load is started, there will be a large current, which
may to trigger the short-circuit protection of the controller and cause the output
turn off. In this SoN case, the user can turn off the short-circuit protection function.
is enabled, SoF is disabled, and the default state is enabled.
Seting info：keep the defaults.
Seting info：keep the defaults.
If the load mode is selected "USE", then you can switch on and off the load
output manually by pressing MENU shortly.
1.If the controller turns off the load due to low voltage protection、
overcurrent protection、short-circuit protection or over temperature
protection, the load will turn onautomatically when the controller recovers
2.Please note: Pushing the MENU button can still activate the function of
the key, even during of the above four kinds protection states.
from protection state.

! Two or more errors at the same time can damage the controller, so you must
troubleshoot the existing fault .
6. Troubleshooting
Page 8 of 10 pages
6.1 Troubleshooting
Faults Reason Troubleshooting
6.2 Maintenance
For best system performance, the following inspections and maintenance tasks are recommended
to be carried out for at least two times a year.
Make sure no block on air-flow around the controller. Clear up any dirt and fragments on radiator.
Check all the naked wires to make sure insulation is not damaged.
Repair or replace some wires if necessary.
Tighten all terminal screws to the indicated torque; Inspect for loose, broken or burnt cable connections.
Check and confirm that LCD is consistent with required. Pay attention to any troubleshooting or error
indication. Take corrective action if necessary.
Make sure all system components are effectively and tightly connected to ground.
Check all terminals for any corrosion signs, damaged insulation, increased temperature.
Check for any dirt, nesting insects and any corrosion signs. Implement corrections actions as early as
WARNING：Risk of electric shock!
Make sure that all the power is turned off before above operations,
and then follow the corresponding inspections and operations.
Solar charge controller MAX series User Manual
possible.
①Power reduction equipment
②Restart the controller or press the button to clear the faulty
E04
E03
E06
E07
E02
E01
E05
Reduce solar photovoltaic voltageor shield the solar panel
Check whether the solar panel power exceeds the maximum
power limitation. If yes, change the solar panel.
Battery over voltage
Battery low voltage
PV over voltage
PV over current
Load over current
Load short circuit
Over temperature
Check if other sources overcharge the battery.
If not, controller is damaged.
Load will be reconnected when battery is recharged.
load and restore output.
①Clear short circuit fault
②Restart the controller or press the key to restore the load
After the temperature decreases,the controller will work
normally.
output.
appropriately.
E08 Check whether the solar panel is damaged. If so,
replace the photovoltaic panel.
PV short circuit

Page 9 of 10 pages
7, Technical Data
* Around oblique line value separately on behalf of 12V and 24V system's value.
Battery
Param
eters
Panel
Param-
eters
Load
System
Param-
eters
MAX1024-U MAX2024-U
10A 20A
12/24V automatic recognition
35V
Gel, AGM, Liquid, Lithium（default: Gel)
14.0~14.8V/28.0~29.6V@25℃(default:14.5/29.0V)
14.3~15.0V/28.6~30.2V@25℃(default:14.8/29.6V)
13.2~14.0V/26.4V~28.0V@25℃( )default:13.7/27.4V
10.8~11.8V/21.6~23.6V(default: 11.2/22.4V)
15.8/31.3V
-4.17mV/K per cell (Boost, Equalization)，
-3.33mV/K per cell (Float)
10.1~32.0V(default: 14.4V)
9.0~30.0V(default: 10.6V)
25V@12V;50V@24V
3.0~10.0V/6.0~20.0V(default: 8.0/16.0V)
10A 20A
5V, 2A
Always on(Default) , D2D, Light control mode,
142* 80 * 30mm
Common Positive
8AWG(10mm²)
-20 ~ +50℃
-25 ~ +80℃
IP32
4000m
Item
Max Charging Current
System Voltage
Max volt on Bat. terminal
Battery Type
Max volt on PV terminal
Dusk/Dawn detect volt.
Output Current
USB interface
Load mode
Dimensions
Weight
Grounding
Power terminals
Ambient temperature
Storage temperature
Protection degree
Max Altitude
Fast Charging Voltage
Boost Voltage
Equalization Voltage
Float Voltage
Low Volt. Disconnect
Overcharge Protect
Temp. Compensation
Charging target voltage
Low voltage disconnect
Liquid,
Gel and
AGM
Lithium
7.1 Parameter
190g
Solar charge controller MAX series User Manual
＜14.5/29.0V @25℃
(Liquid, AGM)
Time control mode, User-defind Mode

Page 10 of 10 pages
7, Technical Data
* Around oblique line value separately on behalf of 12V and 24V system's value.
Battery
Param
eters
Panel
Param-
eters
Load
System
Param-
eters
MAX1024 MAX2024
10A 20A
12/24V automatic recognition
35V
Gel, AGM, Liquid, Lithium（default: Gel)
14.0~14.8V/28.0~29.6V@25℃(default:14.5/29.0V)
14.3~15.0V/28.6~30.2V@25℃(default:14.8/29.6V)
13.2~14.0V/26.4V~28.0V@25℃( )default:13.7/27.4V
10.8~11.8V/21.6~23.6V(default: 11.2/22.4V)
15.8/31.3V
-4.17mV/K per cell (Boost, Equalization)，
-3.33mV/K per cell (Float)
10.1~32.0V(default: 14.4V)
9.0~30.0V(default: 10.6V)
25V@12V;50V@24V
3.0~10.0V/6.0~20.0V(default: 8.0/16.0V)
10A 20A
—— —
Always on(Default) , D2D, Light control mode,
142* 80 * 30mm
Common Positive
8AWG(10mm²)
-20 ~ +50℃
-25 ~ +80℃
IP32
4000m
Item
Max Charging Current
System Voltage
Max volt on Bat. terminal
Battery Type
Max volt on PV terminal
Dusk/Dawn detect volt.
Output Current
USB interface
Load mode
Dimensions
Weight
Grounding
Power terminals
Ambient temperature
Storage temperature
Protection degree
Max Altitude
Fast Charging Voltage
Boost Voltage
Equalization Voltage
Float Voltage
Low Volt. Disconnect
Overcharge Protect
Temp. Compensation
Charging target voltage
Low voltage disconnect
Liquid,
Gel and
AGM
Lithium
7.1 Parameter
190g
Solar charge controller MAX series User Manual
＜14.5/29.0V @25℃
(Liquid, AGM)
Time control mode, User-defind Mode