XTRA N Series

——MPPT Solar Charge Controller

User Manual

Models:
XTRA1206N/XTRA2206N
XTRA1210N/XTRA2210N
XTRA3210N/XTRA4210N
XTRA3215N/XTRA4215N
XTRA3415N/XTRA4415N
Important Safety Instructions

Please keep this manual for future review.

This manual contains all instructions of safety, installation and operation for XTRA N
series Maximum Power Point Tracking (MPPT) controller ("the controller" as referred
to in this manual).

General Safety Information

 Read carefully all the instructions and warnings in the manual before installation.

 No user serviceable components inside the controller. DO NOT disassemble or

attempt to repair the controller.

 Mount the controller indoors. Avoid exposure the components and do not allow
water to enter the controller.

 Install the controller in a well ventilated place. The controller’s heat sink may
become very hot during operation.

 Suggest installing appropriate external fuses/breakers.

 Make sure to switch off all PV array connections and the battery fuse/breakers
before controller installation and adjustment.

 Power connections must remain tight to avoid excessive heating from loose
connection.
 CONTENTS

1. General Information ........................................................................ 1

1.1 Overview.............................................. 1
1.2 Characteristics ......................................... 2
1.3 Naming Rules of Controller models ....................... 3
1.4 Product Classification ................................... 3
2. Installation Instructions ................................................................. 4
2.1 General Installation Notes ............................... 4
2.2 PV Array Requirements ................................. 4
2.3 Wire Size ............................................. 8
2.4 Mounting .............................................. 9
3. Display units ................................................................................. 12
3.1 Basic Display unit(XDB1) ............................... 12
3.2 Standard Display unit (XDS1) ........................... 13
3.3 Adanced Display unit (XDS2) ........................... 17
4. Control Parameters Setting ......................................................... 23
4.1 Battery types ......................................... 23
4.1.1 Support battery types ............................. 23
4.1.2 Battery Voltage Control Parameters ................. 23
4.1.3 Settings ......................................... 25
4.2 Load working modes ................................... 26
4.2.1 LCD setting ...................................... 26
4.2.2 R485 communication setting ....................... 27
4.3 Accessories (optional) ................................. 30
5. Protections, Troubleshooting and Maintenance ........................ 32
5.1 Protection ............................................ 32
5.2 Troubleshooting ....................................... 33
5.3 Maintenance ......................................... 34
6. Technical Specifications .............................................................. 36
Annex I Conversion Efficiency Curves ........................................... 39
Annex II Mechanical Dimension Diagram ....................................... 51
1. General Information
1.1 Overview
XTRA N series controller which can carry different display units(XDB1/XDS1/XDS2)
adopt the advanced MPPT control algorithm, it can minimize the maximum power
point loss rate and loss time, quickly track the maximum power point(MPP) of the PV
array and obtain the maximum energy from solar array under any conditions; and it
can increase the ratio of energy utilization in the solar system by 20%-30% compared
with PWM charging method.

Limiting the charging power & current and reducing charging power functions ensure
the system stable with over PV modules in high temperature environment. IP32
Ingress protection and isolated RS485 design further improve the controller’s
reliability and meet the different application requirements.

XTRA N series controller owns self-adaptive three-stage charging mode based on

digital control circuit, which can effectively prolong the lifespan of battery and
significantly improve the system performance. It also has comprehensive electronic
protection for overcharge, overdischarge, PV & battery reverse polarity etc, to ensure
the solar system more reliable and more durable. This controller can be widely used
for RV, household system, field monitoring and many other applications.

Features：
 CE certification(LVD EN/IEC62109,EMC EN61000-6-1/3)
 100% charging and discharging in working environment temperature range
 Optional LCD display units (XDB1/XDS1/XDS2)
 High quality and low failure rate components of ST or IR to ensure service life
 Advanced MPPT technology & ultra-fast tracking speed guarantee tracking
efficiency up to 99.5%

★
Maximum DC/DC transfer efficiency is as high as 98.3% , full load efficiency is up
★
to 97.3%
 Advanced MPPT control algorithm to minimize the MPP lost rate and lost time
 Accurate recognizing and tracking of multi-peaks maximum power point
 Wide MPP operating voltage range
 Support the lead-acid and lithium batteries, programmable temperature compensation
 Limit charging power & current over rated value
 Real-time energy statistics function
 Power reduction automatically over temperature value
 Multiple load work modes
 Comprehensive electronic protection
 Isolated RS485 with 5V/200mA protected output for no power devices, with
1
 Modbus protocol
 Support monitoring and setting the parameters via APP or PC software

▲
IP32 Ingress protection
★XTRA3415N@48V system
▲3-protection against solid objects: protected against solids objects over
2.5mm.
2-protection against liquids: protected against direct sprays up to 15°from the
vertical.

1.2 Characteristics

Figure 1 Product Characteristics

❶ ★
RTS port ❺ RS485 communication port
❷ PV Terminals ❻ Terminal protection cover
❸ Battery Terminals ❼ Display units
❹ Load Terminals ❽ Mounting Hole Φ5mm
★If the temperature sensor is short circuit or damaged, the controller will
charge or discharge according the voltage setting point at the default
temperature setting of 25 ºC(no temperature compensation).

2
1.3 Naming Rules of Controller models
EXAMPLE:
XTRA 1 2 10 N - XDS2

Display Unit(XDB1/XDS1/XDS2)
Common Negative System
Max. PV open circuit voltage 10-100V;15-150V
System Voltage 1-12VDC; 2-12/24VDC
Charge & discharge current 1-10A;2-20A;3-30A;4-40A
Product Series

1.4 Product Classification

Classify Model Picture Display

LED Indicators: PV & battery

working status
Button:
Basics XTRA****N-XDB1  In manual work mode, it switch
ON/OFF the load by press the
button.
 Clear the error information.

LED Indicators: PV & load working

status
Buttons: View or set the parameters
or clear the error information.
LCD：PV display: voltage/current
Standard XTRA****N-XDS1 /generated energy
Battery display:
voltage/current/temperature
Load display:
current/consumed energy/load working
mode
LED Indicators: PV & battery & load
working status
Buttons: View or set the parameters
or clear the error information.
LCD: PV display: voltage/current
Advanced XTRA****N-XDS2
/generated energy/power
Battery display: voltage/current/
temperature/capacity
Load display: voltage/current/power
/consumed energy/load working mode

3
2. Installation Instructions
2.1 General Installation Notes
 Please read the entire installation instructions to get familiar with the installation
steps before installation.

 Be very careful when installing the batteries, especially flooded lead-acid battery.
Please wear eye protection, and have fresh water available to wash and clean any
contact with battery acid.

 Keep the battery away from any metal objects, which may cause short circuit of the
battery.

 Explosive battery gases may come out from the battery during charging, so make
sure ventilation condition is good.

 Ventilation is highly recommended if mounted in an enclosure. Never install the

controller in a sealed enclosure with flooded batteries! Battery fumes from vented
batteries will corrode and destroy the controller circuits.

 Loose power connections and corroded wires may result in high heat that can melt
wire insulation, burn surrounding materials, or even cause fire. Ensure tight
connections and use cable clamps to secure cables and prevent them from swaying
in mobile applications.

 The controller can work with lead-acid battery and lithium battery within its control
scope.

 Battery connection may be wired to one battery or a bank of batteries. The following
instructions refer to a singular battery, but it is implied that the battery connection
can be made to either one battery or a group of batteries in a battery bank.
 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).

 Select the system cables according to 5A/mm2 or less current density in accordance
with Article 690 of the National Electrical Code, NFPA 70.

2.2 PV Array Requirements

(1) Serial connection (string) of PV modules
As the core component of solar 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 below table is for reference only.

4
XTRA1206N/2206N:
36 cell 48 cell 54 cell 60 cell
System Voc＜23V Voc＜31V Voc＜34V Voc＜38V
voltage
Max. Best Max. Best Max. Best Max. Best
12V 2 2 1 1 1 1 1 1
24V 2 2 - - - - - -

72 cell Voc＜46V 96 cell Voc＜62V Thin-Film

System Module
voltage Max. Best Max. Best Voc＞80V
12V 1 1 - - -
24V 1 1 - - -
NOTE: The above parameter values are calculated under standard test conditions
(STC (Standard Test Condition)：Irradiance 1000W/m2，Module Temperature 25℃，
Air Mass1.5.)
XTRA1210/2210/3210/4210N:
36 cell 48 cell 54 cell 60 cell
System Voc＜23V Voc＜31V Voc＜34V Voc＜38V
voltage
Max. Best Max. Best Max. Best Max. Best
12V 4 2 2 1 2 1 2 1
24V 4 3 2 2 2 2 2 2

72 cell Voc＜46V 96 cell Voc＜62V Thin-Film

System
Module
voltage Max. Best Max. Best Voc＞80V
12V 2 1 1 1 1
24V 2 1 1 1 1
NOTE: The above parameter values are calculated under standard test conditions
(STC (Standard Test Condition)：Irradiance 1000W/m2，Module Temperature 25℃，
Air Mass1.5.)
XTRA3215/4215N:
36 cell 48 cell 54 cell 60 cell
System Voc＜23V Voc＜31V Voc＜34V Voc＜38V
voltage
Max. Best Max. Best Max. Best Max. Best
12V 4 2 2 1 2 1 2 1
24V 6 3 4 2 4 2 3 2

System 72 cell Voc＜46V 96 cell Voc＜62V Thin-Film

voltage Module
Max. Best Max. Best Voc＞80V
12V 2 1 1 1 1
24V 3 2 2 1 1

5
NOTE: The above parameter values are calculated under standard test conditions
(STC (Standard Test Condition)：Irradiance 1000W/m2，Module Temperature 25℃，
Air Mass1.5.)
XTRA3415/4415N:
36 cell 48 cell 54 cell 60 cell
System Voc＜23V Voc＜31V Voc＜34V Voc＜38V
voltage
Max. Best Max. Best Max. Best Max. Best
12V 4 2 2 1 2 1 2 1
24V 6 3 4 2 4 2 3 2
48V 6 5 4 3 4 3 3 3

System 72 cell Voc＜46V 96 cell Voc＜62V Thin-Film

voltage Module
Max. Best Max. Best Voc＞80V
12V 2 1 1 1 1
24V 3 2 2 1 1
48V 3 2 2 2 1
NOTE: The above parameter values are calculated under standard test conditions
(STC (Standard Test Condition)：Irradiance 1000W/m2，Module Temperature 25℃，
Air Mass1.5.)
(2) Maximum PV array power
The MPPT controller has the function of charging 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 range, 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. The actual operation of PV array is as follows:

Condition 1:
Actual charging power of PV array ≤ Rated charging power of controller

Condition 2:
Actual charging current of PV array ≤ Rated charging current of controller

When the controller operates under “Condition 1”or“Condition 2”, it will carry out the
charging as per the actual current or power; at this time, the controller can work at the
maximum power point of PV array.

WARNING: When the power of PV is not greater than the rated charging
power, but the maximum open-circuit voltage of PV array is more than
60V(XTRA**06N)/100V(XTRA**10N)/150V(XTRA**15N) (at the lowest
environmental temperature), the controller may be damaged.

Condition 3:
Actual charging power of PV array＞Rated charging power of controller

Condition 4:
Actual charging current of PV array＞Rated charging current of controller

6
When the controller operates under “Condition 3”or“Condition 4”，it will carry out the
charging as per the rated current or power.

WARNING: When the power of PV module is greater than the rated

charging power, and the maximum open-circuit voltage of PV array is more
than 60V(XTRA**06N)/100V(XTRA**10N)/150V(XTRA**15N) (at the
lowest environmental temperature), the controller may be damaged.
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 be not greater than 1.5
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 make the probability of damage to the
controller rise. Therefore, it is very important to configure the system reasonably. For
the recommended maximum power of PV array for this controller, please refer to the
table below:

Rated Charge Rated Charge Max. PV Array Max. PV open

Model
Current Power Power circuit voltage
130W/12V 195W/12V
XTRA1206N 10A ①
260W/24V 390W/24V 46V
②
260W/12V 390W/12V 60V
XTRA2206N 20A
520W/24V 780W/24V
130W/12V 195W/12V
XTRA1210N 10A
260W/24V 390W/24V
260W/12V 390W/12V
XTRA2210N 20A 92V
①
520W/24V 780W/24V
②
390W/12V 580W/12V 100V
XTRA3210N 30A
780W/24V 1170W/24V
520W/12V 780W/12V
XTRA4210N 40A
1040W/24V 1560W/24V
390W/12V 580W/12V
XTRA3215N 30A
780W/24V 1170W/24V
520W/12V 780W/12V
XTRA4215N 40A
1040W/24V 1560W/24V
390W/12V 580W/12V ①
780W/24V 1170W/24V 138V
XTRA3415N 30A ②
1170W/36V 1755W/36V 150V
1560W/48V 2340W/48V
520W/12V 780W/12V
1040W/24V 1560W/24V
XTRA4415N 40A
1560W/36V 2340W/36V
2080W/48V 3120W/48V
①At 25℃ environment temperature
②At minimum operating environment temperature

7
2.3 Wire Size
The wiring and installation methods must conform to all national and local electrical
code requirements.

 PV Wire Size

Since PV array output can vary due to the PV module size, connection method or
＊
sunlight angle, the minimum wire size can be calculated by the Isc of PV array.
Please refer to the value of Isc in the PV module specification. When PV modules
connect in series, the Isc is equal to a PV modules Isc. When PV modules connect in
parallel, the Isc is equal to the sum of the PV modules’Isc. The Isc of the PV array
must not exceed the controller’s maximum PV input current. Please refer to the table
as below:
NOTE: All PV modules in a given array are assumed to be identical.
＊Isc=short circuit current(amps) Voc=open circuit voltage.
＊
Model Max. PV input current Max. PV wire size
XTRA1206N
10A 4mm2/12AWG
XTRA1210N
XTRA2206N
20A 6mm2/10AWG
XTRA2210N
XTRA3210N
XTRA3215N 30A 10mm2/8AWG
XTRA3415N
XTRA4210N
XTRA4215N 40A 16mm2/6AWG
XTRA4415N
＊These are the maximum wire sizes that will fit the controller terminals.
CAUTION: When the PV modules connect in series, the open circuit
voltage of the PV array must not exceed 46V (XTRA**06N), 92V
(XTRA**10N) , 138V (XTRA**15N) at 25℃ environment temperature.

 Battery and Load Wire Size

The battery and load wire size must conform to the rated current, the reference size
as below:

Rated Rated
Battery wire Load wire
Model charge discharge
size size
current current
XTRA1206N
10A 10A 4mm2/12AWG 4mm2/12AWG
XTRA1210N
XTRA2206N
20A 20A 6mm2/10AWG 6mm2/10AWG
XTRA2210N
XTRA3210N
XTRA3215N 30A 30A 10mm2/8AWG 10mm2/8AWG
XTRA3415N

8
 XTRA4210N
XTRA4215N 40A 40A 16mm2/6AWG 16mm2/6AWG
XTRA4415N

CAUTION: The wire size is only for reference. If there is a long distance
between the PV array and the controller or between the controller and the
battery, larger wires can be used to reduce the voltage drop and improve
performance.

CAUTION: For the battery, the recommended wire will be selected

according to the conditions that its terminals are not connected to any
additional inverter.

2.4 Mounting
WARNING: Risk of explosion! Never install the controller in a sealed enclose
with flooded batteries! Do not install in a confined area where battery gas can
accumulate.

WARNING: Risk of electric shock! When wiring the solar modules, the PV
array can produce a high open circuit voltage, so turn off the breaker before
wiring and be careful when wiring.

CAUTION：The controller requires at least 150mm of clearance above and

below for proper air flow. Ventilation is highly recommended if mounted in an
enclosure.

Installation Procedure:

Figure 2-1 Mounting

Step 1: Determination of Installation Location and Heat-dissipation Space
9
Determination of installation location: The controller shall be installed in a place with
sufficient air flow through the radiators of the controller and a minimum clearance of
150 mm from the upper and lower edges of the controller to ensure natural thermal
convection. Please see Figure 2-1: Mounting
CAUTION: If the controller is to be installed in an enclosed box, it is
important to ensure reliable heat dissipation through the box.

Figure 2-2 Schematic of wiring diagram

Step 2：Connect the system in the order of ❶battery ❷ load ❸PV array in
accordance with Figure 2-2,”Schematic Wiring Diagram” and disconnect the system in
the reverse order❸❷❶.

CAUTION: While wiring the controller do not close the circuit breaker or
fuse and make sure that the leads of "+" and "-" poles are connected
correctly.
CAUTION: A fuse which current is 1.25 to 2 times the rated current of the
controller, must be installed on the battery side with a distance from the
battery not greater than 150 mm.
CAUTION: If the controller is to be used in an area with frequent lightning
strikes or unattended area, it must install an external surge arrester.

CAUTION: If an inverter is to be connected to the system, connect the

inverter directly to the battery, not to the load side of the controller.

Step 3：Grounding
XTRA N series is a common-negative controller, where all the negative terminals of
PV array, battery and load can be grounded simultaneously or any one of them will be

10
grounded. However, according to the practical application, all the negative terminals
of PV array, battery and load can also be ungrounded, but the grounding terminal on
its shell 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 shell.
CAUTION: For common-negative system, such as motorhome, it is
recommended to use a common-negative controller; but if in the
common-negative system, some common-positive equipment are used,
and the positive electrode is grounded, the controller may be damaged.
Step 4：Connect accessories

 Connect the remote temperature sensor cable

Remote Temperature Sensor

Temperature Sensor Cable (Optional)
（Model:RT-MF58R47K3.81A） （Model:RTS300R47K3.81A）

Connect the remote temperature sensor cable to the interface ① and place the other
end close to the battery.

CAUTION: If the remote temperature sensor is not connected to the

controller,, the default setting for battery charging or discharging
temperature is 25 °C without temperature compensation.

 Connect the accessories for RS485 communication

Refer to chaper4 “Control Parameters Setting”.
Step 5：Powered on the controller
Closing the battery fuse will switch on the controller. Then check the status of the
battery indicator (the controller is operating normally when the indicator is lit in green).
Close the fuse and circuit breaker of the load and PV array. Then the system will be
operating in the preprogrammed mode.

CAUTION: If the controller is not operating properly or the battery indicator

on the controller shows an abnormality, please refer to 5.2
“Troubleshooting”.

11
 3. Display units
3.1 Basic Display unit(XDB1)

(1)Charging and battery LED indicator

Indicator Color Status Information
PV connection normal ,but
Green On Solid low voltage(low irradiance)
from PV, no charging
No PV voltage(night time) or
Green OFF
PV connection problem
Green Slowly Flashing(1Hz) In charging
Green Fast Flashing (4Hz) PV Over voltage
Green On Solid Normal
Green Slowly Flashing (1Hz) Full
Green Fast Flashing (4Hz) Over voltage
Orange On Solid Under voltage
Red On Solid Over discharged
Battery Overheating
Red Slowly Flashing(1Hz) Lithium battery Low
①
temperature
②
System voltage error
All LED indicators fast flashing at the same time
Controller Overheating
①When a lead-acid battery is used, the controller doesn’t have the low temperature
protection.
②When a lithium battery is used, the system voltage can’t be identified automatically.

12
(2)Battery Capacity Level Indicator

 Battery Capacity Level (BCL)

Indicator Color Status Information
☆○○○ Green 25% Indicator slowly flashing 0< BCL <25%
50% Indicator slowly flashing
●☆○○ Green
25% Indicator on solid
25%≤BCL <50%

75% Indicator slowly flashing

●●☆○ Green
25%,50% Indicators on solid
50%≤BCL <75%

100% Indicator slowly flashing

●●●☆ Green
25%,50%,75% Indicators on solid
75%≤BCL <100%

●●●● Green 25%,50%,75%,100%Indicators on solid 100%

“○” Indicator is OFF； “●”Indicator is on Solid；“☆” Indicator is slowly flashing.
 Load status
Green on solid The load is ON
Battery Capacity Level
Green OFF The load is OFF
(3)Button

In the manual mode, it can control On/Off of the load via the button

3.2 Standard Display unit (XDS1)

13
(1)LED indicator
Indicator Color Status Instruction
PV connection normal but
Green On Solid low voltage(low irradiance)
from PV, no charging
No PV voltage(night time) or
Green OFF
PV connection problem
Green Slowly Flashing(1Hz) In charging
Green Fast Flashing (4Hz) PV Over voltage
Red On Solid Load ON
Red OFF Load OFF

(2)Button
Mode Note

Load ON/OFF In load manual mode, it can turn the load On/Off via the
button.

Clear Fault
Press the button

Browsing Mode
Press the button

Press the button and hold on 5s to enter the setting mode

Setting Mode Press the button to set the parameters,

Press the button to confirm the setting parameters or no

operation for 10s, it will exit the setting interface automatically.

(3)Interface

14
1) Status Description
Item Icon Status

Day

Night

PV array No charging

Charging

PV Voltage, Current, Generated energy

Battery capacity, In Charging

Battery Battery Voltage, Current, Temperature

Battery Type

Load ON

Load
Load OFF

Current/Consumed energy/Load mode

2) Browse interface

15
3)Load parameter dispaly

Display：Current/Consumed energy/Load working mode-Timer1/ Load working

mode-Timer2

4)Setting
① Clear the generated energy
Operation:

Step 1: Press the button and hold 5s under the PV generated energy
interface and the value will be flashing.

Step 2: Press the button to clear the generated energy.

② Switch the battery temperature unit

Press the button and hold 5s under the battery temperature interface.
③Battery type

Operation:

Step1: Press the button and hold 5s under the battery voltage interface.

Step2: Press the button when the battery type interface is flashing.

Step3: Press the button to confirm the battery type.

CAUTION：Please refer to chapter 4.1 for the battery control voltage

setting, when the battery type is User.

④Load working mode

16
Operation:

Step1: Press the button and hold 5s under the load mode interface.

Step2: Press the button when the load mode interface is flashing.

Step3: Press the button to confirm the load mode.

NOTE：Please refer to chapter4.2 for the load working modes.

3.3 Adanced Display unit (XDS2)

(1)Indicator
Indicator Color Status Instruction
PV connection normal but low
Green On Solid voltage(low irradiance) from
PV, no charging
No PV voltage(night time) or
Green OFF
PV connection problem
Green Slowly Flashing(1Hz) In charging
Green Fast Flashing(4Hz) PV Over voltage
Green On Solid Normal
Green Slowly Flashing(1Hz) Full
Green Fast Flashing(4Hz) Over voltage
Orange On Solid Under voltage
Red On Solid Over discharged
Battery Overheating
Red Slowly Flashing(1Hz) Lithium battery Low
①
temperature

17
 Yellow On Solid Load ON
Yellow OFF Load OFF
Controller Overheating
PV&BATTLED fast flashing ②
System voltage error
①When a lead-acid battery is used, the controller doesn’t have the low temperature
protection.
②When a lithium battery is used, the system voltage can’t be identified automatically

(2)Button

PV browsing interface
Press the button
Setting data +
Press the button and Setting the LCD cycle time
hold 5s
BATT browsing interface
Press the button
Cursor displacement during setting
Press the button and Setting the battery type, battery capacity
hold 5s level and temperature unit.
Controller load browsing interface
Press the button
Setting data -
Press the button and Setting the load working mode
hold 5s
Enter into setting interface
Setting interface switch to the browsing
Press the button
interface
Setting parameter as enter button

Press the button Exit the setting interface

(3)Display

18
 Icon Information Icon Information Icon Information

Not Not
Day discharging
charging

Night Charging Discharging

1)PV parameters

Display：Voltage/Current/Power/Generated Energy

2)Battery parameters

Display：Voltage/Current/Temperature/Battery capacity level

3)Load parameters

Display：Voltage/Current/Power/ Consumed energy/Load working mode-Timer1/ Load

working mode-Timer2

(4)Setting parameters
1)Battery type

19
 Sealed (Default) Gel Flooded User

Operation:

Step 1: Press the button for the setting interface.

Step 2: Press the button and hold 5s for the battery type interface.

Step 3: Press the or button to choose the battery type.

Step 4: Press the button to confirm the battery type.

CAUTION：Please refer to chapter 4.1 for the battery control voltage

setting, when the battery type is User.

2)Battery capacity

Operation:

Step 1: Press the button for the setting interface.

Step 2: Press the button and hold 5s for the battery type interface.

Step 3: Press the button for the battery capacity interface.

Step 4: Press the or button to set the battery capacity.

Step 5: Press the button to confirm the parameters.

20
3) Temperature units

Operation:

Step 1: Press the button for the setting interface.

Step 2: Press the button and hold 5s for the battery type interface.

Step 3: Press the button twice for the temperature unit interface.

Step 4: Press the or button to set the temperature units.

Step 5: Press the button to confirm the parameters.

4) LCD cycle time

NOTE: The LCD cycle default time is 2s,the setting time range is 0～20s.

Operation:

Step 1: Press the button for the setting interface.

Step 2: Press the button and hold 5s for the LCD cycle time interface.

Step 3: Press the or button to set the LCD cycle time.

Step 4: Press the button to confirm the parameters.

21
5) Local load working mode

Operation:

Step 1: Press the button for the setting interface.

Step 2: Press the button and hold 5s for the load working mode interface.

Step 3: Press the or button to set the working mode..

Step 4: Press the button to confirm the parameters.

NOTE：Please refer to chapter 4.2 for the load working mode.

22
4. Control Parameters Setting
4.1 Battery types

4.1.1 Support battery types

Item Lead-acid battery Lithium battery
1 Sealed(default) LiFePO4(4S/12V;8S/24V;16S/48V)
2 Gel Li(NiCoMn)O2 (3S/12V;6S/24V;12S/48V)
3 Flooded User
4 User ——

CAUTION: When the default battery type is selected, the battery

voltage control parameters will be set by default and can’t be
changed. To change these parameters, select "User" battery type.

4.1.2 Battery Voltage Control Parameters

 Lead-acid battery parameters

The parameters are in 12V system at 25 ºC, please double the values in 24V
system and quadruple the values in 48V system.
Battery type
Sealed Gel Flooded User
Voltage
Over Voltage Disconnect
16.0V 16.0V 16.0V 9～17V
Voltage
Charging Limit Voltage 15.0V 15.0V 15.0V 9～17V
Over Voltage Reconnect
15.0V 15.0V 15.0V 9～17V
Voltage
Equalize Charging Voltage 14.6V —— 14.8V 9～17V
Boost Charging Voltage 14.4V 14.2V 14.6V 9～17V
Float Charging Voltage 13.8V 13.8V 13.8V 9～17V
Boost Reconnect Charging
13.2V 13.2V 13.2V 9～17V
Voltage
Low Voltage Reconnect
12.6V 12.6V 12.6V 9～17V
Voltage
Under Voltage Warning
12.2V 12.2V 12.2V 9～17V
Reconnect Voltage
Under Voltage Warning
12.0V 12.0V 12.0V 9～17V
Voltage
Low Voltage Disconnect
11.1V 11.1V 11.1V 9～17V
Voltage
Discharging Limit Voltage 10.6V 10.6V 10.6V 9～17V
Equalize Duration 120 min —— 120 min 0～180 min
Boost Duration 120 min 120 min 120 min 10～180 min

23
The following rules must be observed when modifying the parameter values in User
for lead-acid battery.
Ⅰ. Over Voltage Disconnect Voltage > Charging Limit Voltage ≥ Equalize Charging
Voltage ≥ Boost Charging Voltage ≥ Float Charging Voltage > Boost Reconnect
Charging Voltage.
Ⅱ. Over Voltage Disconnect Voltage > Over Voltage Reconnect Voltage
Ⅲ. Low Voltage Reconnect Voltage > Low Voltage Disconnect Voltage ≥ Discharging
Limit Voltage.
Ⅳ. Under Voltage Warning Reconnect Voltage > Under Voltage Warning Voltage ≥
Discharging Limit Voltage.
Ⅴ. Boost Reconnect Charging voltage >Low Voltage Reconnect Voltage.

 Lithium battery parameters

The parameters are in 12V system at 25 ºC, please double the values in 24V
system and quadruple the values in 48V system.
Battery type
LiFePO4 Li(NiCoMn)O2 User
Voltage
Over Voltage Disconnect
15.6V 13.5V 9～17V
Voltage
Charging Limit Voltage 14.6V 12.6V 9～17V
Over Voltage Reconnect
14.7V 12.7V 9～17V
Voltage
Equalize Charging
14.5V 12.5V 9～17V
Voltage
Boost Charging Voltage 14.5V 12.5V 9～17V
Float Charging Voltage 13.8V 12.2V 9～17V
Boost Reconnect
13.2V 12.1V 9～17V
Charging Voltage
Low Voltage Reconnect
12.8V 10.5V 9～17V
Voltage
Under Voltage Warning
12.8V 11.0V 9～17V
Reconnect Voltage
Under Voltage Warning
12.0V 10.5V 9～17V
Voltage
Low Voltage Disconnect
11.1V 9.3V 9～17V
Voltage
Discharging Limit Voltage 10.6V 9.3V 9～17V
The following rules must be observed when modifying the parameter values in User
for lithium battery.
Ⅰ. Over Voltage Disconnect Voltage>Over charging protection voltage(Protection
※
Circuit Modules(BMS))+0.2V ;

24
 Ⅱ. Over Voltage Disconnect Voltage>Over Voltage Reconnect Voltage＝Charging
Limit Voltage ≥ Equalize Charging Voltage＝Boost Charging Voltage ≥ Float
Charging Voltage>Boost Reconnect Charging Voltage;
Ⅲ. Low Voltage Reconnect Voltage>Low Voltage Disconnect Voltage ≥ Discharging
Limit Voltage;
Ⅳ. Under Voltage Warning Reconnect Voltage>Under Voltage Warning Voltage≥
Discharging Limit Voltage;
Ⅴ. Boost Reconnect Charging voltage> Low Voltage Reconnect Voltage;
Ⅵ. Low Voltage Disconnect Voltage ≥ Over discharging protection voltage
※
(BMS)+0.2V .

WARNING: The voltage parameters of lithium battery can be set, but you
must refer to the voltage parameters of lithium battery BMS.

WARNING: The required accuracy of BMS shall be at least 0.2V. If the

deviation is higher than 0.2V, the manufacturer will assume no liability for
any system malfunction caused by this.

4.1.3 Settings

1) PC setting
 Connection


 Download software
http://www.epever.com/en/index.php/Tecknical/download(PC Software for the Solar
Charge Controller)
2) APP software setting

25
  Download software(User for lead-acid battery)
http://www.epever.com/en/index.php/Tecknical/download(Android APP for the
Solar Charge Controller)
 Download software(User for lithium battery)
http://www.epever.com/en/index.php/Tecknical/download(Android APP for the
Li-Battery Solar Charge Controller)

4.2 Load working modes

4.2.1 LCD setting

1) XDS1 display and operation

When the LCD shows above interface, operate as following:

Step1: Press the button and hold 5s for the load mode interface.

Step2: Press the button when the load mode interface is flashing.

Step3: Press the button to confirm the load working modes.

2) XDS2 display and operation

When the LCD shows above interface, operate as following:

Step1: Press the button for the setting interface.

26
Step2: Press the button and hold 5s for the load working mode interface.

Step3: Press the or button to set the load working modes.

Step4: Press the button to confirm the parameters.

3) Load working mode
1** Timer 1 2** Timer 2
100 Light ON/OFF 2n Disabled
Load will be on for 1 hour after Load will be on for 1 hour
101 201
sunset before sunrise
Load will be on for 2 hours Load will be on for 2 hours
102 202
after sunset before sunrise
103 203
Load will be on for 3 ～ 13 Load will be on for 3 ～ 13
～ ～
hours after sunset hours before sunrise
113 213
Load will be on for 14 hours Load will be on for 14 hours
114 214
after sunset before sunrise
Load will be on for 15 hours Load will be on for 15 hours
115 215
after sunset before sunrise
116 Test mode 2n Disabled
Manual mode(Default load
117 2n Disabled
ON)
CAUTION: Please set Light ON/OFF, Test mode and Manual mode via
Timer1. Timer2 will be disabled and display "2 n ".

4.2.2 R485 communication setting

1) Load working mode

 Manual Control (default)

Control ON/OFF of the load via the button or remote commands (e.g., APP or PC
software).
 Light ON/OFF

27
 Light ON+ Timer

 Time Control

Control the load ON/OFF time through setting the real-time clock.

2) Load working mode settings

(1)PC setting
 Connection

 Download software
http://www.epever.com/en/index.php/Tecknical/download (PC Software for the
Solar Charge Controller)
(2)APP software setting

28
  Download software
http://www.epever.com/en/index.php/Tecknical/download (Android APP for the
Solar Charge Controller)
(3)MT50 Setting

CAUTION: For detailed setting methods, please refer to the instructions or

contact after-sales support.

29
4.3 Accessories (optional)
Acquisition of battery temperature for undertaking temperature compensation of
control parameters, the standard length of the cable is 3m (length can be
Remote Temperature Sensor customized). The RTS300R47K3.81A connects to the port (4th) on the controller.
(RTS300R47K3.81A)
NOTE: The temperature sensor short-circuited or damaged, the controller
will be charging or discharging at the default temperature 25 ºC.
USB to RS485 converter is used to monitor each controller using Solar Station
USB to RS485 cable
PC software. The length of cable is 1.5m. TheCC-USB-RS485-150U connects to
CC-USB-RS485-150U
the RS485 Port on the controller.
Used to connect the controller with mobile phone and able to achieve real-time
OTG cable
monitoring of the controller and modification of the parameters by using mobile
OTG-12CM
APP software
MT50 can display various operating data and fault info the system. The
Remote Meter information can be displayed on a backlit LCD screen, the buttons are
MT50 easy-to-operate, and the numeric display is readable.
NOTE: MT50 don’t support the lithium battery parameters.
After the controller is connected with the eBox-WIFI-01 through the standard
WIFI Serial Adapter Ethernet cable (parallel cable), the operating status and related parameters of
eBox-WIFI-01 the controller can be monitored by the mobile APP software through WIFI
signals.
After the controller is connected with the eBox-BLE-01 through the standard
RS485 to Bluetooth Adapter Ethernet cable (parallel cable), the operating status and related parameters of
eBox-BLE-01 the controller can be monitored by the mobile APP software through Bluetooth
signals.
After the controller is connected with the eLOG-01 through the RS485
Logger
communication cable, it can record the operating data of the controller or monitor
eLOG01
the real-time operating status of the controller via PC software.
NOTE: For setting and operation of accessory, please refer to accessory’s user manual.

30
31
5. Protections, Troubleshooting and Maintenance
5.1 Protection
When the charging current or power of the PV array exceeds the controller’s rated current or power, it will be charge at the rated
PV Over current or power.
Current/power NOTE: When the PV modules are in series, ensure that the open-circuit voltage of the PV array does not exceed the "maximum PV open-circuit
voltage" rating. Otherwise the controller may be damaged.
PV Short Circuit When not in PV charging state, the controller will not be damaged in case of a short-circuiting in the PV array.
When the polarity of the PV array is reversed, the controller may not be damaged and can continue to operate normally after the
PV Reverse Polarity polarity is corrected.
NOTE: If the PV array is reverse connected to the controller,1.5 times rated controller power(watts)from the PV array, will damage the controller.
Night Reverse Charging Prevents the battery from discharging to the PV module at night.
Fully protected against battery reverse polarity; no damage will occur to the battery. Correct the miswire to resume normal operation.
Battery Reverse Polarity NOTE: Limited to the characteristic of lithium battery, when the PV connection is correct and battery connection reversed, the controller will be
damaged.
When the battery voltage reaches the over voltage disconnect voltage, it will automatically stop battery charging to prevent battery
Battery Over Voltage
damage caused by over-charging.
When the battery voltage reaches the low voltage disconnect voltage, it will automatically stop battery discharging to prevent battery
Battery Over Discharge damage caused by over-discharging. (Any controller connected loads will be disconnected. Loads directly connected to the battery
will not be affected and may continue to discharge the battery.)
The controller can detect the battery temperature through an external temperature sensor. The controller stops working when its
Battery Overheating
temperature exceeds 65 °C and restart to work when its temperature is below 55 °C.
When the temperature detected by the optional temperature sensor is lower than the Low Temperature Protection Threshold(LTPT),
Lithium Battery Low
the controller will stop charging and discharging automatically. When the detected temperature is higher than the LTPT, the
Temperature
controller will be working automatically (The LTPT is 0 °C by default and can be set within the range of 10 ~ -40 °C).
When the load is short circuited (The short circuit current is ≥ 4 times the rated controller load current), the controller will
Load Short Circuit automatically cut off the output. If the load reconnects the output automatically five times (delay of 5s, 10s, 15s, 20s, 25s), it needs to
be cleared by pressing the Load button, restarting the controller or switching from Night to the Day (nighttime > 3 hours).
When the load is overloading (The overload current is ≥ 1.05 times the rated load current), the controller will automatically cut off the
Load Overload output. If the load reconnects automatically five times (delay of 5s, 10s, 15s, 20s, 25s), it needs to be cleared by pressing the Load
button restarting the controller, switching from Night to Day (nighttime > 3 hours).
★ The controller is able to detect the temperature inside the battery. The controller stops working when its temperature exceeds 85 °C
Controller Overheating
and restart to work when its temperature is below 75 °C.
The internal circuitry of the controller is designed with Transient Voltage Suppressors (TVS) which can only protect against
TVS High Voltage
high-voltage surge pulses with less energy. If the controller is to be used in an area with frequent lightning strikes, it is recommended
Transients
to install an external surge arrester.

32
 ★When the internal temperature is 81℃, the reduce charging power mode which
reduce the charging power of 5%,10%,20%,40% every increase 1 ℃ is turned on. If
the internal temperature is greater than 85℃, the controller will stop charging. When
the temperature declines to be below 75 ºC, the controller will resume.
For example XTRA4215N 24V system:

5.2 Troubleshooting
Possible reasons Faults Troubleshooting
Charging LED indicator off during
PV array Confirm that PV wire connections
daytime when sunshine falls on PV
disconnection are correct and tight
modules properly
Battery voltage Please check the voltage of
Wire connection is correct, the
is lower than battery. At least 8V voltage to
controller is not working.
8V activate the controller.
XDB1：Charging indicator
Green fast flashing
XDS1： Battery level shows
full, battery frame Check if battery voltage is
Battery over blink, fault icon blink higher than OVD(over voltage
voltage XDS2：Charging indicator disconnect voltage), and
disconnect the PV.
Green fast flashing
Battery level shows
full, battery frame
blink, fault icon blink
When the battery voltage is
Battery over XDB1：Battery indicator restored to or above LVR(low
discharged Red on solid voltage reconnect voltage), the
load will recover

33
 XDS1： Battery level shows
empty, battery frame
blink, fault icon blink
XDS2：Charging indicator Red on
solid
Battery level shows
empty, battery frame
blink, fault icon blink
XDB1：Battery indicator
Red slow flashing
XDS1：
The controller will
Battery frame blink, automatically turn the system
Battery fault icon blink off. When the temperature
Overheating
XDS2：Battery indicator declines to be below 55 ºC, the
Red slow flashing controller will resume.
Battery frame blink,
fault icon blink

When heat sink of controller

exceeds 85℃, the controller
Controller will automatically cut off input
Overheating and output circuit. When the
XDB1：
temperature below 75℃,the
PV/BATT(orange)/Battery capacity
controller will resume to work.
lever(four) indicator fast flashing
①Check whether the battery
XDS2：
voltage match with the
PV/BATT indicator fast flashing
System voltage controller working voltage.
error ②Please change to a suitable
battery or reset the working
voltage.
1. The load is no output ①Please reduce the number
2.XDS1/XDS2： of electric equipments.
Load Overload ②Restart the controller.
③Wait for one night-day cycle
/ (night time>3 hours).
Load and fault icon blink ①Check carefully loads
connection, clear the fault.
Load Short
②Restart the controller.
Circuit
③Wait for one night-day cycle
(night time>3 hours).

5.3 Maintenance
The following inspections and maintenance tasks are recommended at least two
times per year for best performance.
 Make sure controller firmly installed in a clean and dry ambient.

34
 Make sure no block on air-flow around the controller. Clear up any dirt and
fragments on heat sink.
 Check all the naked wires to make sure insulation is not damaged for sun
exposure, frictional wear, dryness, insects or rats etc. Repair or replace some
wires if necessary.
 Tighten all the terminals. Inspect for loose, broken, or burnt wire connections.
 Check and confirm that LED is consistent with required. Pay attention to any
troubleshooting or error indication .Take corrective action if necessary.
 Confirm that all the system components are ground connected tightly and
correctly.
 Confirm that all the terminals have no corrosion, insulation damaged, high
temperature or burnt/discolored sign, tighten terminal screws to the suggested
torque.
 Clear up dirt, nesting insects and corrosion in time.
 Check and confirm that lightning arrester is in good condition. Replace a new
one in time to avoid damaging of the controller and even other equipments.

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.

35
6. Technical Specifications
Electrical Parameters
XTRA XTRA XTRA XTRA XTRA XTRA XTRA XTRA XTRA XTRA
Item
1206N 2206N 1210N 2210N 3210N 4210N 3215N 4215N 3415N 4415N
System nominal ①
① 12/24/36/48VDC
voltage 12/24VDC Auto
Auto
Rated charge current 10A 20A 10A 20A 30A 40A 30A 40A 30A 40A
Rated discharge
10A 20A 10A 20A 30A 40A 30A 40A 30A 40A
current
Battery voltage
8～32V 8～68V
range
② ② ②
Max. PV open 60V 100V 150V
circuit voltage ③ ③ ③
46V 92V 138V
(Battery voltage +2V)～ (Battery voltage +2V)～ (Battery voltage +2V)～
MPP voltage range
36V 72V 108V
390W/12V 520W/12V
130W/12V 260W/12V 130W/12V 260W/12V 390W/12V 520W/12V 390W/12V 520W/12V 780W/24V 1040W/24V
Max. PV input power
260W/24V 520W/24V 260W/24V 520W/24V 780W/24V 1040W/24V 780W/24V 1040W/24V 1170W/36V 1560W/36V
1560W/48V 2080W/48V
Max. conversion
97.9% 98.3% 98.2% 98.3% 98.6% 98.6% 98% 98.1% 98.3% 98.5%
efficiency
Full load efficiency 97% 96.7% 96.2% 96.4% 96.6% 96.5% 95.9% 95.6% 97.3% 97.2%
≤35mA(12V)
≤14mA(12V) ≤35mA(12V) ≤22mA(24V)
Self-consumption
≤15mA(24V) ≤22mA(24V) ≤16mA(36V)
≤16mA(48V)
Discharge circuit
≤0.23V
voltage drop
Temperature
compensate -3mV/℃/2V (Default)
④
coefficient
Grounding Common negative

36
RS485 interface 5VDC/200mA(RJ45)
LCD backlight time Default:60S,Range:0~999S(0S:the backlight is ON all the time)
①When lithium battery is used, the system voltage can’t be identified automatically.
②At minimum operating environment temperature
③At 25℃ environment temperature
④When lithium battery is used, the temperature compensate coefficient must be 0,and can’t be changed.

Environmental Parameters
◆
Working environment temperature -25℃～+50℃(LCD)
(100% input and output) -30℃～+50℃(No LCD)
Storage temperature range -20℃～+70℃
Relative humidity ≤95%, N.C.
★
Enclosure IP32
Pollution degree PD2
◆The controller can full load working in the working environment temperature, When the internal temperature reach to 81℃, the
reducing charging power mode is turned on. Refer to P34.
★3-protection against solid objects: protected against solids objects over 2.5mm.
2-protection against liquids: protected against direct sprays up to 15°from the vertical.
Mechanical Parameters
XTRA1206N XTRA2206N XTRA3215N XTRA3415N
Item XTRA3210N XTRA4415N
XTRA1210N XTRA2210N XTRA4210N XTRA4215N
Dimension 175×143×48mm 217×158×56.5mm 230×165×63mm 255×185×67.8mm 255×187×75.7mm 255×189×83.2mm
Mounting dimension 120×134mm 160×149mm 173×156mm 200×176mm 200×178mm 200×180mm
Mounting hole size Φ5mm
Terminal 12AWG(4mm2) 6AWG(16mm2) 6AWG(16mm )2
6AWG(16mm2) 6AWG(16mm2) 6AWG(16mm2)
Recommended cable 12AWG(4mm2) 10AWG(6mm2) 8AWG(10mm2) 6AWG(16mm2) 8AWG(16mm2) 6AWG(16mm2)
Weight 0.57kg 0.96kg 1.31kg 1.70kg 2.07kg 2.47kg

Certification
Safety EN/IEC62109-1
EMC(Emission immunity) EN61000-6-3/EN61000-6-1

37
FCC 47 CFR Part 15, Subpart B
Performance &function IEC62509
ROHS IEC62321-3-1

38
Annex I Conversion Efficiency Curves
2
Illumination Intensity: 1000W/m Temp: 25ºC
Model: XTRA1206N
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

2. Solar Module MPP Voltage(34V,45V) / Nominal System Voltage(24V)

39
Model: XTRA1210N
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

2. Solar Module MPP Voltage(34V,51V,68V) / Nominal System Voltage(24V)

40
Model: XTRA2206N
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

2. Solar Module MPP Voltage(34V,45V) / Nominal System Voltage(24V)

41
Model: XTRA2210N
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

2. Solar Module MPP Voltage(34V,51V,68V) / Nominal System Voltage(24V)

42
Model: XTRA3210N
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

2. Solar Module MPP Voltage(34V,51V,68V) / Nominal System Voltage(24V)

43
Model: XTRA4210N
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

2. Solar Module MPP Voltage(34V, 51V,68V) / Nominal System Voltage(24V)

44
Model: XTRA3215N
1. Solar Module MPP Voltage(17V, 34V, 68V) / Nominal System Voltage(12V)

2. Solar Module MPP Voltage(34V, 68V, 102V) / Nominal System Voltage(24V)

45
Model: XTRA4215N
1. Solar Module MPP Voltage(17V, 34V, 68V) / Nominal System Voltage(12V)

2. Solar Module MPP Voltage(34V, 68V, 102V) / Nominal System Voltage(24V)

46
Model: XTRA3415N
1. Solar Module MPP Voltage(17V, 34V, 68V) / Nominal System Voltage(12V)

2. Solar Module MPP Voltage(34V, 68V, 102V) / Nominal System Voltage(24V)

47
3. Solar Module MPP Voltage(68V, 102V, 119V) / Nominal System Voltage(36V)

4. Solar Module MPP Voltage(68V, 102V, 119V) / Nominal System Voltage(48V)

48
Model: XTRA4415N
1. Solar Module MPP Voltage(17V, 34V, 68V) / Nominal System Voltage(12V)

2. Solar Module MPP Voltage(34V, 68V, 102V) / Nominal System Voltage(24V)

49
3. Solar Module MPP Voltage(68V, 102V, 119V) / Nominal System Voltage(36V)

4. Solar Module MPP Voltage(68V, 102V, 119V) / Nominal System Voltage(48V)

50
Annex II Mechanical Dimension Diagram
XTRA1206N/1210N (Unit: mm)

51
XTRA2206N/2210N (Unit: mm)

52
XTRA3210N (Unit: mm)

53
XTRA4210/3215N (Unit: mm)

54
XTRA3415/4215N（Unit：mm）

55
XTRA4415N（Unit：mm）

Any changes without prior notice! Version number: 1.3

56
BEIJING EPSOLAR TECHNOLOGY CO., LTD.

Tel: +86-10-82894112 / 82894962

Fax: +86-10-82894882

E-mail：info@epsolarpv.com

Website: http://www.epsolarpv.com/

http://www.epever.com/