DC MONT DC-MPPT-MPK2-40A User manual

MPPT CONTROLLER USER MANUAL
PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION AND MAINTENANCE,
FOLLOW ALL PROVIDED WARNING & CAUTION, AND KEEP IT FOR FUTURE REFERENCE.
SKU: DC-MPPT-MPK2-40A / DC-MPPT-MPK2-60A / DC-MPPT-MPK2-100A
MONT
V1.0

SAFETY INSTRUCTIONS
General Safety Information
Read all of the instructions and cautions in the manual before beginning the installation.
There are no serviceable parts for this controller. Do NOT disassemble or attempt to repair the
controller.
Do NOT allow water to enter the controller.
Make sure all connections going into and from the controller are tight.
Charge Controller Safety
NEVER connect the solar panel to the controller without a battery.
Do NOT use the solar controller to charge non-rechargeable batteries. Doing so may result in harm
to the user and/or damage the solar module, battery and controller.
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BATTERY SAFETY
Use only sealed lead-acid, flooded or lithium batteries which must be deep cycle.
Explosive battery gases may be present while charging. Be certain there is enough ventilation to
release the gases.
Be careful when working with large lead acid batteries. Wear eye protection and have fresh water
available in case there is contact with the battery acid.
Carefully read battery manuals before operation.
Do NOT let the positive (+) and negative (-) terminals of the battery touch each other.
Recycle battery when it is replaced.
Equalization is carried out only for flooded lead acid batteries. Do NOT equalize VRLA type AGM /
gel / lithium cell batteries UNLESS permitted by battery manufacturer.
Battery must be connected first, then the solar panel, finally the load.
Otherwise it may cause a dangerous occurrence where the controller would
experience a high open circuit voltage at the terminals.
Once equalization is active in the battery charging, it will not exit this stage
unless there is adequate charging current from the solar panel. There should
be NO load on the battery when in equalization charging stage.
WARNING!
CONTENTS
1 x MPPT Solar Controller
1 x Bluetooth Module
1 x Remote Temperature Sensor
1 x User Manual

IDENTIFICATION OF PARTS
 LCD Screen  Indicators  Buttons  Remote Temperature Sensor Port
 Solar Panel Terminals  Battery Terminals  Load Terminals
 Communication Port  Grounding Terminal  Mounting Holes
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RS485
Temp Senser
①
②
③
④⑤⑥⑦⑧
⑨
⑩
LED INDICATORS
Blue indicator (left):
on -> bulk charge, flashing -> equalization, absorption or floating charge, off -> stop charging.
Green indicator (middle):
on -> battery is normal, flashing quickly -> battery is over-voltage, flashing slowly -> battery low
voltage, off -> battery voltage is too low or not connected.
Red indicator (right):
on -> load is on, flashing -> overload, off -> load is off.
SOLAR PANEL BATTERY DC LOAD

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INSTALLATION
Choose a mounting location on a vertical surface which should be protected from direct sunlight,
high temperatures, and water. Make sure there is good ventilation.
Verify that there is sufficient room to run wires, as well as clearance above and below the controller
for ventilation. The clearance should be at least 6 inches (150mm).
Secure the controller on the mounting location.
Switch off the air switch or fuse of the battery, solar panel and load.
Connect the battery to the battery terminals on the controller.
Connect the solar panel to the solar panel terminals on the controller.
Connect the load to the load terminals on the controller.
Switch on the fuse of the battery first, then the air switch of the solar panel, finally the fuse of the load.
12V Battery
Remote
Temperature
Sensor BLUE TOOTH
Fuse
Air-switch
Fuse

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REMOTE TEMPERATURE SENSOR
This sensor measures the temperature at the battery and uses this data for very accurate
temperature compensation.
Simply connect the cable of the sensor and adhere the sensor on top or the side of the battery to
record ambient temperature around the battery.
BLUETOOTH MODULE
With the Bluetooth module, you can monitor your system and change parameters directly from your
cell phone.
DOWNLOADINGAPP
Search and download “SController2.1” in App Store on your iPhone.
For the Android version, you can scan the QR code to download and install the App.

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Click on the right top of the interface for battery setting, load setting, Chinese / English switching
and reset.
OPERATION
Plug the Bluetooth module into
the RS485 port of the charger.
Enter the App interface and click
“Bluetooth”.
Choose and click “BT18”, you can see real-time status of
solar panel, battery, load, power generation and electricity
consumption.

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Load working mode
By switching on “Load working mode”, you can
choose other working modes for the load, i.e.
(1) light control mode, (2) dual time period
control mode or (3) time period control mode.
(1) Light control
As the interface shows, the load will turn on
when the voltage of the solar panel decreases
to 5V at sunset and turn off when the voltage
reaches 6V at sunrise.
1. Battery Setting
In this interface, you can choose battery type,
system voltage, and set up battery parameters
(absorption voltage, absorption duration, over
voltage disconnection voltage, etc.).
2. Load Setting
In this interface, you can choose normal
working mode or other working modes.
Normal
By switching on “Normal”, the load will work for
24H per day.

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3. Chinese / English Switching
By switching on/off this switch, you can set
the system language to English / Chinese.
4. Reset
By switching on “Reset”, you can reset the
controller to factory settings.
(2) Dual time period control
As the interface shows, the load will be on for
1 minute after sunset (solar panel voltage
decreases to 5V) and be on for 0 minute before
sunrise (solar panel voltage reaches 6V). The
load working time duration can be set up.
(3) Time period control
In this interface, you can set up load working
time period.

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Main Display
On the main display, you can check charging & discharging current, battery voltage, system voltage,
battery type, etc. Press to the time interface displaying time and date. Press to the capacity
interface displaying charging & discharging capacity.
Interface will remain if the machine works well. It will switch automatically to the fault interface (check
ERROR CODE CHART in this manual for information) after 15s if something is out of work. Press
/ to exit the fault interface.
LCD Display Interface
Load On/Off Setting: On the main display, press to switch on/off the load.
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OPERATING THE CONTROLLER
LCD Display Interface Overview
12345 6 7
8
9
10
11
1. Solar panel
2. Working status
3. System voltage level
4. Charging
5. Battery capacity
6. Discharging
7. Battery type
8. Load working mode&status
9. Unit
10. Day/night
11. Characters

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Sound Setting: To set sound, long press on the time interface to turn on/off sound.
Total Capacity Count: Maximum total charging / discharging capacity is 65KAH. Once over 65KAH,
the count starts again from 0 Ah. On the main display, press to enter the capacity interface. Then
long press over 5s to restart charging capacity count. Long press over 5s to restart
discharging capacity count.
Restore Factory Settings: On the capacity interface, long press to restore factory settings.
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Time and Date Setting: On the main display, press to enter the time interface. Then long press
for over 5s to enter the setting interface. From left to right, it is date, month, hour, minute, year
and day of week. Short press or to modify, and long press for over 5s to save. Short
press to switch. Month: 1~9 stands for January~September; O stands for October; N stands for
November; D stands for December.
MM
M
Panel Voltage Display: On the main display, long press for over 5s to check PV voltage.
5
5
5
5
5
date month hour minute date of week year date of week

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On the main display, long press to enter interfaces 01. Short press / to enter the last / next
interface. On each interface, short press and the character will flash. Short press / to
decrease / increase the character. To confirm the setting, you can long press and it will go back
to the main interface automatically, or short press and it will enter the next interface.
PARAMETER SETTING
MM
M
M
00:
02:
04:
06:
08:
10:
12:
14:
16-23:
25:
Working Interface
Battery Voltage(12/24/36/48V Auto Recognized)
Float Charge Voltage Setting
Absorption Charge Time Setting
Equalization Charge Time Setting
Lithium-Ion Battery Charge Recovery Voltage Setting
Discharge Recovery Voltage Setting
Load Working Time After Dark
Load Time Period Control & Time Setting
Communication Address Setting
01:
03:
05:
07:
09:
11:
13:
15:
24:
26:
Battery Type Setting
Battery Capacity
Absorption Charge Voltage Setting
Equalization Charge Voltage Setting
Lithium-Ion Battery Constant Voltage Setting
Discharge Cutoff Voltage Setting
Load Working Mode Setting
Load Working Time Before Dawn
Temp. Compensation Coefficient Setting
Baud Rate Setting

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Interface 01: Battery Type Setting
b00: lead-acid battery custom;
b01: sealed battery;
b02: flooded battery;
b03: gel battery;
b04: lithium battery custom;
Note: For b04, CV (constant voltage charging) voltage and RCV (recovery charging voltage) should
be set up manually.
b05: 3.2V*4 series of LiFePO4;
b06: 3.2V*5 series of LiFePO4;
b07: 3.7V*3 series ternary lithium battery;
b08: 3.7V*4 series ternary lithium battery.
Note: Charging parameters cannot be set up from b05 to b08.
PARAMETER SETTING
Interface 02: Battery Voltage Setting
Battery voltage can be auto recognized or manually set.

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Interface 26: Baud Rate Setting
On the main display, long press to enter interface 01. Short press to enter interface 26. Short
press and the character will flash. Short press / to set the baud rate to 9.6kbps. Long
press to confirm the setting.
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M
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Interface 13: Load Working Mode Setting
L01: normal mode (load working for 24H per day)
L02: light control mode (load working at day time)
L03: anti-light control mode (load working at night)
L04: dual time period control mode (light control with priority)
L05: time period control mode (load working time period can be set)
L06: charging mode (load off)

PARAMETERS
25mm² / 3AWG
-20~+55°C
-30~+80°C
10%~90% No Condensation
IP32
< 3000m
RS485, RJ45 Port
Cat5
FCC Part 15 Class B; CE; RoHS
-4mV/°C/2V
Rated Battery Current
System Voltage
Rated Load Current
Max. Battery Voltage
General
Max Terminal Size
Working Temperature
Storage Temperature
Humidity Range
Enclosure
Altitude
Communication
Network Cable Type
Certification
Temp Compensation
Max Solar Input Power
100A
50A
SKU
Self-Consumption
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57.6V
150V
60A
30A
12V / 650W,
24V / 1300W,
36V / 1950W,
48V / 2600W
≤35mA @ 12V/24V/36V/48V
40A
20A
12V/24V/36V/48V Auto Recognition
12V / 520W,
24V / 1040W,
36V / 1560W,
48V / 2080W
DC-MPPT-MPK2-40A DC-MPPT-MPK2-60A DC-MPPT-MPK2-100A
Electrical
Max Solar Input Voltage
BATTERY CHARGING PARAMETERS
Equalization Voltage
Boost Voltage
Float Voltage
Low Voltage Disconnect
Low Voltage Reconnect
SKU
14.4V
14.6V
10.8V
12.6V
13.8V
Gel Sealed Flooded Li
/
/
/
/
/
12V / 1300W,
24V / 2600W,
36V / 3900W,
48V / 5200W
* Parameters are multiplied by 2 for 24V systems, by 3 for 36V systems and by 4 for 48V systems.

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ERROR CODE CHART
Ex3
Battery over-voltage
Overload
Load Short Circuit
DESCRIPTION & QUICK TROUBLESHOOT
Ex1 Battery over-discharged
Note: “x” in the error code refers to the total number of errors in the system.
Ex4
Ex2
CODE ERROR
Overheating
Ex5
Input Over-current
Ex6
Indicating the controller
should be restarted after the
system voltage is set up.
Ex8
Battery voltage is too low.
Load will be turned off until battery is recharged to
recovery voltage.
Battery voltage has exceeded controller limit. Check
battery voltage for compatibility with controller and
check battery voltage setting.
Load power draw exceeds controller capability.
Reduce load output, and switch on load manually or
wait 6 minutes for auto switch-on.
Check load wiring and rewire.
Controller exceeds operating temperature limit.
Ensure controller is placed in a well-ventilated, cool,
dry place. Controller automatically resumes charging
when the temperature drops.
Input current exceeds controller rated input current.
Decrease the number of panels in parallel.
Disconnect the solar panel first, and then the battery.
After the LCD display is off, reconnect the system.
MAINTENANCE
Make sure that all power is turned off before touching the terminals on the charge controller.
Check wiring going into the charge controller and make sure there is no wire damage or wear.
Tighten all terminals and inspect any loose, broken, or burnt up connections.
Make sure LCD readings are consistent. Take necessary corrective action.
Check to make sure none of the terminals have any corrosion, insulation damage, high temperature,
or any burnt/discoloration marks.

What is Covered?
DC MONT warrants that this MPPT controller will operate free from defects in material and workmanship
under normal use during the Warranty Period of 2 Years. This Limited Warranty is to the original purchaser
of the product and is not transferable to any other person or entity.
Within the Warranty Period, DC MONT will either replace the product or provide you with a refund at our
discretion provided that the fault is found to have been caused by a design or manufacturing defect under
normal use and maintenance.
What is not Covered?
This Limited Warranty does not cover product failure related to damages caused by abuse or negligence,
tampering, non-adherence to DC MONT guidelines or from any of the following: failure to properly install and
connect the battery, failure to properly charge and maintain the battery, breakage or damage from collision,
fire, water, freezing, damage from extreme heat or cold, improper storage, reverse polarity connection, short
circuit of the battery terminals.
This Limited Warranty does not cover repair, maintenance, and adjustment to the product required for
reasons of neglect, misuse, accident, modification, improper environment (including lack of proper
temperature or humidity), unusual physical or electrical stress or interference, failure of lightning, power
surges, fire, or acts of God.
Warranty Disclaimer
DC MONT makes no representations or warranties regarding the product other than those expressly stated
in this Limited Warranty. The foregoing Limited Warranties are exclusive and in lieu of all other express and
implied warranties whatsoever. DC MONT specifically disclaims any implied warranties of merchantability or
fitness for a particular purpose.
To the maximum extent permitted by applicable law, DC MONT shall not be liable for any damages
whatsoever (including without limitation, special, incidental, consequential, or indirect damages for personal
injury, loss of business profits, loss of business information, or any other pecuniary loss) arising out of the
use of or inability to use this product. In any case, DC MONT's entire liability under any provision of this
warranty shall be limited to the amount actually paid by you for the product. Because some jurisdictions do
not allow the exclusion of limitation of liability for consequential or incidental damages, the above limitation
may not apply to you.
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