Epever XTRA1206N User manual

XTRA-N Series
——New MPPT Solar Charge Controller
User Manual
Models:
XTRA1206N/XTRA2206N
XTRA1210N/XTRA2210N
XTRA3210N/XTRA4210N

Important Safety Instructions
Please save this manual for future review.
This manual contains safety, installation and operation for Maximum Power Point
Tracking (MPPT) XTRA N series 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. Prevent exposure to the elements 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.
It is suggested to install 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 Designations 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 ............................................. 6
2.4 Mounting.............................................. 8
3. Display units .................................................................................11
3.1 Basic Display unit(XDB1)............................... 11
3.2 Standard Display unit (XDS1) ........................... 12
3.3 Adanced Display unit (XDS2) ........................... 16
4. Setting Control Parameters .........................................................22
4.1 Battery types ......................................... 22
4.1.1 Support battery types ............................. 22
4.1.2 Battery Voltage Control Parameters................. 22
4.1.3 User settings..................................... 23
4.2 Load working modes................................... 24
4.2.1 LCD setting...................................... 24
4.2.2R485 communication setting ....................... 25
4.3 Accessories (optional) ................................. 28
5. Protections, Troubleshooting and Maintenance........................30

5.1 Protection............................................ 30
5.2 Troubleshooting....................................... 31
5.3 Maintenance ......................................... 32
6. Technical Specifications..............................................................33
Annex I Conversion Efficiency Curves ...........................................35
Annex II Dimensions ........................................................................41

1
1. General Information
1.1 Overview
The XTRA-N series integrate the latest design philosophy, as the main part which is
the solar charge controller can carry different display units(XDB1/XDS1/XDS2). The
limitation function of the charging power and current and reducing charging power
function automatic improve the stability which works even connecting oversize PV
modules and in high temperature. Meanwhile, it adopts the water-proof design with
the IP32 class, and increase the professional protection chip for the communication
port, further improving the reliability and meeting the different application
requirements.
Improving the MPPT control algorithm further, XTRA N series can minimize the
maximum power point loss rate and loss time, quickly track the maximum power point
of the PV array and obtain the maximum energy from solar modules under any
conditions; and can increase the ratio of energy utilization in the solar system by
10%-30% compared with a PWM charging method.
With the adaptive three-stage charging mode based on a digital control circuit, XTRA
N series controllers can effectively prolong the life-cycle of batteries, significantly
improve the system performance and support all-around electronic protection
functions, including overcharging and over discharging protection to minimize
damages to components of the system caused by incorrect installation or system
failure at the utmost, and effectively ensure safer and more reliable operation of the
solar power supply system for a longer service time. This modular solar controller can
be widely used for different applications, e.g., Communication base stations,
household systems, and field monitoring, etc.
Features：
Optional LCD display units (XDB1/XDS1/XDS2)
Full-load operation without any drop in capacity within the range of working
environment temperature
Dustproof and waterproof design with IP32★class
International famous brands of ST and IR's components of high quality and low
failure rate are used, which can ensure the product’s service life
The communication port adopts professional protection chip, which can provide
5VDC power supply, and has over-current and short-circuit protection.
Advanced MPPT technology, with efficiency no less than 99.5%
Ultra-fast tracking speed and guaranteed tracking efficiency
Advanced MPPT control algorithm to minimize the maximum power point loss
rate and loss time
High quality components, perfecting system performance, with maximum
conversion efficiency of 98%
Accurate recognition and tracking of multiple-peaks maximum power point
Automatic limitation of the charging power and current

2
Wide MPP operating voltage range
Compatible with lead-acid and lithium-ion batteries
Battery temperature compensation function
Real-time energy statistics function
Overheating power reduction function
Multiple load work modes
With RS-485 communication bus interface and Modbus communication protocol,
it is available to meet various communication requirements in different situations.
Monitor and set the parameters via mobile phoneAPP or PC software
Extensive electronic protection
★3-Dustproof：It can prevent any solid foreign objects with the diameter larger
than 2.5mm from invading;
2-Waterproof: When tilted for 15°, it still can prevent any water droplets from
immerging.
1.2 Characteristics
❶
RTS★Interface
❺
RS485 communication interface
❷
PV Terminals
❻
Terminal protection cap
❸
Battery Terminals
❼
Display units
❹
Load Terminals
❽
Mounting Hole Φ5mm
Figure 1 Product Characteristics

3
★If the temperature sensor is short-circuited or damaged, the controller will
charge or discharge at the default temperature setting of 25 ºC.
1.3 Designations of Controller Models
EXAMPLE:
1.4Product Classification
Classify
Model
Picture
Display
Basics
XTRA****N-XDB1
LED Indicators: PV & battery
working status
Button:
When the working mode is Manual
Control, the load is ON/OFF via the
button.
Standard
XTRA****N-XDS1
LED Indicators: PV & load working
status
Buttons: View or set the parameters
LCD：PV display:voltage/current
/generated energy
Battery display:
voltage/current/temperature
Load display:current/load working
mode
Advanced
XTRA****N-XDS2
Indicators: PV & battery & load
working status
Buttons: View or set the parameters
LCD: PV display voltage/current
/generated energy/Power
Battery display voltage/
current/temperature/capacity
Load display: voltage/ current/ power/
load working mode
XTRA 1 2 10 N - XDS2
Display Unit(XDB1/XDS1/XDS2)
Product Series
Charge & discharge current10A
System Voltage12/24VDC
Max. PV open circuit voltage 100V
Common Negative System

4
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.
Lead-acid battery and lithium battery are recommended, other kinds please refer to
the battery manufacturer.
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/mm2or 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 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 below table is for reference only.

5
XTRA1206N/2206N:
System
voltage
36 cell
Voc＜23V
48 cell
Voc＜31V
54 cell
Voc＜34V
60 cell
Voc＜38V
Max.
Best
Max.
Best
Max.
Best
Max.
Best
12V
2
2
1
1
1
1
1
1
24V
2
2
-
-
-
-
-
-
System
voltage
72 cell Voc＜46V
96 cell Voc＜62V
Thin-Film
Module
Voc＞80V
Max.
Best
Max.
Best
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:
System
voltage
36 cell
Voc＜23V
48 cell
Voc＜31V
54 cell
Voc＜34V
60 cell
Voc＜38V
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
System
voltage
72 cell Voc＜46V
96 cell Voc＜62V
Thin-Film
Module
Voc＞80V
Max.
Best
Max.
Best
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.)
(2) Maximum PV array power
This MPPT controller has a limiting function of charging current/power. The charging
current/power will be limited within the rated range, therefore, the controller will
charge the battery with the rated charging power even if the input power at the PV
exceeds this limit.
The actual operation power of the PV array conforms to the conditions below:
1) PV array actual power ≤ controller rated charge power, the controller will charge
the battery at the actual maximum power point.
2) PV array actual power > controller rated charge power, the controller will charge
the battery at the charger’s maximum rated power.

6
If the PV power is higher than the charger’s maximum rated power, the charging time
at rated power to the battery will be longer, and more energy to battery will be stored
in the battery..
WARNING: The controller has a maximum PV power input rating(watts), and
will allow the PV power to be higher than the rated power, but if the PV
power is three times greater than the rated power, the controller will
damaged.
WARNING: If the PV array is reverse connected to the controller,1.5 times
rated power(watts) will damage the controller.
When sizing a PV array to a charge controller, be sure to choose PV panels that when
combined(or singly),will not exceed the controller’s maximum inpt current rating(Isc)
and open circuit voltage rating(Voc), in addition to the power limitation noted above!
Please refer to the table below:
Model
Rated Charge
Current
Rated Charge
Power
Max. PV Array
Power
Max. PV open
circuit voltage
XTRA1206N
10A
130W/12V
260W/24V
390W/12V
780W/24V
46V①
60V②
XTRA2206N
20A
260W/12V
520W/24V
780W/12V
1560W/24V
XTRA1210N
10A
130W/12V
260W/24V
390W/12V
780W/24V
92V①
100V②
XTRA2210N
20A
260W/12V
520W/24V
780W/12V
1560W/24V
XTRA3210N
30A
390W/12V
780W/24V
1170W/12V
2340W/24V
XTRA4210N
40A
520W/12V
1040W/24V
1560W/12V
3120W/24V
①At 25℃environment temperature
②At minimum operating environment temperature
WARNING: The controller may be damaged when the maximum PV open
circuit voltage(Voc) exceeds 60V(XTRA**06N), 100V(XTRA**10N)at
minimum operating environment temperature.
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

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parallel, the Isc is equal to the sum of the PV module’s 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
XTRA1210N
10A
4mm2/12AWG
XTRA2206N
XTRA2210N
20A
6mm2/10AWG
XTRA3210N
30A
10mm2/8AWG
XTRA4210N
40A
16mm2/6AWG
＊These are the maximum wire sizes that will fit the controller terminals.
NOTE: When the PV modules connect in series, the open circuit voltage of
the PV array must not exceed 46V (XTRA**06N), 92V (XTRA**10N) 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:
Model
Rated
charge
current
Rated
discharge
current
Battery wire
size
Load wire
size
XTRA1206N
XTRA1210N
10A
10A
4mm2/12AWG
4mm2/12AWG
XTRA2206N
XTRA2210N
20A
20A
6mm2/10AWG
6mm2/10AWG
XTRA3210N
30A
30A
10mm2/8AWG
10mm2/8AWG
XTRA4210N
40A
40A
16mm2/6AWG
16mm2/6AWG
NOTE: 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.
NOTE: For the battery, the recommended wire will be selected according to
the conditions that its terminals are not connected to any additional
inverter.

8
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 solarmodules, the PV
array can produce open circuit voltages in excess of 100V when in sunlight.
NOTE：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:
Step 1: Determination of Installation Location and Heat-dissipation Space
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
NOTE: If the controller is to be installed in an enclosed box, it is
important to ensure reliable heat dissipation through the box.
Figure 2-1 Mounting

9
Step 2：Connect the system in the order of ❶battery ❷load❸PV array in
accordance with Figure 2-2,”Schematic Wiring Diagram”and disconnect the system in
the reverse order❸❷❶.
NOTE:While wiring the controller do not close the circuit breaker or fuse
and make sure that the leads of "+" and "-" poles are connected correctly.
NOTE: 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.
NOTE: If the controller is to be used in an area with frequent lightning
strikes or unattended area, it must be installed an external surge arrester.
NOTE: 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
As the XTRA N series is a common negative controller, the negative poles of the PV
array, battery and load can be grounded together..
NOTE: The controllercan also be used in a common positive system. In this
case, the negative poles of the controller, PV and load can’t be grounded
together, but only one of them can be grounded.
Step 4：Connect accessories
Connect the remote temperature sensor cable (model: RTS300R47K3.81A)
Figure 2-2 Schematic of wiring diagram

10
Connect one end of the remote temperature sensor cable
to the interface ③and place the other end close to the battery.
NOTE: 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 “Setting and Operation of Controller”
NOTE: 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.
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.
NOTE: If the controller is not operating properly or the battery indicator on
the controller shows an abnormality, please refer to 4.2 “Troubleshooting”.

11
3. Display units
3.1 Basic Display unit(XDB1)
（1）Charging and battery LED indicator
Indicator
Color
Status
Information
Green
On Solid
PV connection normal ,but
low voltage(low irradiance)
from PV, no charging
Green
OFF
No PV voltage(night time) or
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
Red
Slowly Flashing(1Hz)
Battery Overheating
Low temperature①
All LED indicators fast flashing at the same time
System voltage error②
Controller Overheating
①When a lead-acid battery is used, the controller hasn’t the low temperature
protection.
②When a lithium-ion 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% to <25%
●☆○○
Green
50% Indicator slowly flashing
25% Indicator on solid
25% to <50%
●●☆○
Green
75% Indicator slowly flashing
25%,50% Indicators on solid
50% to <75%
●●●☆
Green
100% Indicator slowly flashing
25%,50%,75% Indicators on solid
75% to 100%
●●●●
Green
25%,50%,75%,100%Indicators on solid
100%
“○”Indicator is OFF；“●”Indicator is on Solid；“☆” Indicator is slowly flashing.
Load status
Battery Capacity Level
Green
on solid
The load is ON
Green
OFF
The load is OFF
（3）Button
In the manual mode of the load, 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
Green
On Solid
PV connection normal but
low voltage(low irradiance)
from PV, no charging
Green
OFF
No PV voltage(night time) or
PV connection problem
Green
Slowly Flashing(1Hz)
Charging Battery
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 of the load via
the button.
Clear Fault
Press the button
Browsing Mode
Press the button
Setting Mode
Press the button and hold on 5s to enter the setting mode
Press the button to set the parameters,
Press the button to confirm the setting parameters or exit
the setting mode automatically after 10s.
（3）Interface
1）Icon
Item
Icon
Status
PV array
Day

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Night
No charging
Charging
PV Voltage, Current, Power
Battery
Battery capacity, In Charging
Battery Voltage, Current, Temperature
Battery Type
Load
Load ON
Load OFF
Load Voltage, Current, Load mode
2）Browse interface
3）Load parameters