MPPT Solar Charge Controller

User Manual

Models:
Tracer1206AN/Tracer2206AN
Tracer1210AN/Tracer2210AN
Tracer3210AN/Tracer4210AN
Important Safety Instructions

Please keep this manual for future review.

This manual contains all instructions of safety, installation and operation for Tracer AN
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 ....................... 2
1.4 Maximum Power Point Tracking Technology ............... 3
1.5 Battery Charging Stage ................................. 4
2. Installation Instructions ................................................................. 7
2.1 General Installation Notes ............................... 7
2.2 PV Array Requirements ................................. 7
2.3 Wire Size ............................................ 10
2.4 Mounting ............................................. 11
3. Operation ....................................................................................... 14
3.1 Button ............................................... 14
3.2 Interface ............................................. 14
3.3 Setting ............................................... 16
3.4 Accessories (optional) ................................. 21
4. Protections, Troubleshooting and Maintenance ........................ 23
4.1 Protection ............................................ 23
4.2 Troubleshooting ....................................... 24
4.3 Maintenance ......................................... 25
5. Technical Specifications .............................................................. 26
Annex I Conversion Efficiency Curves ........................................... 28
Annex II Mechanical Dimension Diagram ....................................... 34
1. General Information
1.1 Overview
Tracer AN series controller is based on common negative design and advanced
MPPT control algorithm, with LCD displaying running status, this product is artistic,
economical and practical. The MPPT control algorithm 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 20%-30% compared
with a 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. and
increase the professional protection chip for the RS485 port, further improving the
reliability and meeting the different application requirements.
Tracer AN 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 etc, to ensure the
solar system more reliable and more durable. This controller can be widely used for
RV, communication base station, household system, field monitoring and many other
areas.
Features：
 100% charging and discharging in working environment temperature
 High quality and low failure rate components(ST/IR/Infineon) to ensure service life
 Advanced MPPT technology, with efficiency no less than 99.5%
 Maximum DC/DC conversion efficiency of 98%
 Ultra-fast tracking speed and guaranteed tracking efficiency
 Advanced MPPT control algorithm to minimize the MPP loss rate and loss time
 Accurate recognition and tracking of multiple-peaks maximum power point
 Wide MPP operating voltage range
 Limit charging power & current over rated range
 Support the lead-acid and lithium batteries with the needed tem. compensation
 Real-time energy statistics function
 Power reduction automatically over temperature range
 Multiple load work modes
 Comprehensive electronic protection
 RS485 with 5V/200mA protected output for no power devices, with Modbus
 Monitor and set the parameters via APP or PC software

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1.2 Characteristics

Figure 1 Product Characteristics

❶ SELECT button ❻ RS485 communication port

❷ ★
RTS port ❼ Mounting Hole Φ5mm
❸ PV Terminals ❽ ENTER button
❹ Battery Terminals ❾ LCD
❺ Load Terminals
★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 Naming Rules of Controller models

EXAMPLE:
Tracer 1 2 10 AN

Common Negative System

Max. PV open circuit voltage 100V
System Voltage12/24VDC
Charge & discharge current10A
Product Series

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1.4 Maximum Power Point Tracking Technology
Due to the nonlinear characteristics of solar array, there is a maximum energy output
point (Max Power Point) on its curve. Traditional controllers, with switch charging
technology and PWM charging technology, can’t charge the battery at the maximum
power point, so can’t harvest the maximum energy available from PV array, but the
solar charge controller with Maximum Power Point Tracking (MPPT) Technology can
lock on the point to harvest the maximum energy and deliver it to the battery.
The MPPT algorithm of our company continuously compares and adjusts the
operating points to attempt to locate the maximum power point of the array. The
tracking process is fully automatic and does not need user adjustment.
As the Figure 1-2, the curve is also the characteristic curve of the array, the MPPT
technology will ‘boost’ the battery charge current through tracking the MPP. Assuming
100% conversion efficiency of the solar system, in that way, the following formula is
established:

Input power (PPV)= Output power (PBat)

Input voltage (VMpp) *input current (IPV) =Battery voltage (VBat) *battery current (IBat)

Normally, the VMpp is always higher than VBat, Due to the principle of conservation of
energy, the IBat is always higher than IPV. The greater the discrepancy between VMpp
&VBat, the greater the discrepancy between IPV& IBat. The greater the discrepancy
between array and battery, the bigger reduction of the conversion efficiency of the
system, thus the controller’s conversion efficiency is particularly important in the PV
system.
Figure 1-2 is the maximum power point curve, the shaded area is charging range of
traditional solar charge controller (PWM Charging Mode), it can obviously diagnose
that the MPPT mode can improve the usage of the solar energy resource. According
to our test, the MPPT controller can raise 20%-30% efficiency compared to the PWM
controller. (Value may be fluctuant due to the influence of the ambient circumstance
and energy loss.)

Figure 1-2 Maximum Power Point Curve

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In actual application, as shading from cloud, tree and snow, the panel maybe appear
Multi-MPP, but in actually there is only one real Maximum Power Point. As the below
Figure 1-3 shows:

Figure 1-3 Mutil-MPP Curve

If the program works improperly after appearing Multi-MPP, the system will not work
on the real max power point, which may waste most solar energy resources and
seriously affect the normal operation of the system. The typical MPPT algorithm,
designed by our company, can track the real MPP quickly and accurately, improve the
utilization rate of the array and avoid the waste of resources.

1.5 Battery Charging Stage

The controller has a 3 stages battery charging algorithm (Bulk Charging, Constant
Charging and Float Charging) for rapid, efficient, and safe battery charging.

Figure 1-4 Battery changing stage Curve

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A) Bulk Charging
In this stage, the battery voltage has not yet reached constant voltage (Equalize or
Boost Voltage), the controller operates in constant current mode, delivering its
maximum current to the batteries (MPPT Charging).
B) Constant Charging
When the battery voltage reaches the constant voltage setpoint, the controller will
start to operate in constant charging mode, this process is no longer MPPT charging,
and in the meantime the charging current will drop gradually, the process is not the
MPPT charging. The Constant Charging has 2 stages, equalize and boost. These two
stages are not carried out constantly in a full charge process to avoid too much gas
precipitation or overheating of battery.
 Boost Charging

The Boost stage maintain 2 hours in default, user can adjust the constant time and
preset value of boost voltage according to demand.
The stage is used to prevent heating and excessive battery gassing.
 Equalize Charging

WARNING: Explosive Risk!

Equalizing flooded battery would produce explosive gases, so well
ventilation of battery box is recommended.
CAUTION: Equipment damage!
Equalization may increase battery voltage to the level that damages
sensitive DC loads. Verify that all load allowable input voltages are 11%
greater than the equalizing charging set point voltage.
CAUTION: Equipment damage!
Over-charging and excessive gas precipitation may damage the battery
plates and activate material shedding on them. Too high an equalizing
charge or for too long may cause damage.
Please carefully review the specific requirements of the battery used in the system.
Some types of batteries benefit from equalizing charge on a regular basis, which is
able to stir electrolyte, balance battery voltage and accomplish chemical reaction.
Equalizing charge increases battery voltage, higher than the standard complement
voltage, which gasifies the battery electrolyte.
The controller will equalize the battery on 28th each month. The constant equalization
period is 0~180 minutes. If the equalization isn’t accomplished in one-time, the
equalization recharge time will be accumulated until the set time is finished. Equalize
charge and boost charge are not carried out constantly in a full charge process to
avoid too much gas precipitation or overheating of battery.
NOTE:
1) Due to the influence of ambient circumstance or load working, the battery
voltage can’t be steady in constant voltage, controller will accumulate and

5
calculate the time of constant voltage working. When the accumulated time
reach to 3 hours, the charging mode will turn to Float Charging.
2) If the controller time is not adjusted, the controller will equalize charge
battery once every month following the inner time.
C) Float Charging
After the Constant voltage stage, the controller will reduce charging current to Float
Voltage setpoint. This stage will have no more chemical reactions and all the charge
current transforms into heat and gas at this time. Then the controller reduces the
voltage to the floating stage, charging with a smaller voltage and current. It will reduce
the temperature of the battery and prevent the gassing and charging the battery
slightly at the same time. The purpose of Float stage is to offset the power
consumption caused by self consumption and small loads in the whole system, while
maintaining full battery storage capacity.
In Float charging stage, loads are able to obtain almost all power from solar panel. If
loads exceed the power, the controller will no longer be able to maintain battery
voltage in Float charging stage. If the battery voltage remains below the Recharge
Voltage, the system will leave Float charging stage and return to Bulk charging stage.

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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/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 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.

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Tracer1206/2206AN:
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.)
Tracer1210/2210/3210/4210AN:
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.)
(2) Maximum PV array power
The MPPT controller has the function of current/power-limiting, that is, during the
charging process, when the charging current or power exceeds the rated charging
current or power, the controller will automatically limit the charging current or power to
the rated charging current or power, which can effectively protect the charging parts of
controller, and prevent damages to the controller due to the connection of some
over-specification PV modules. 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

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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
60(Tracer**06AN)/100V(Tracer**10AN) (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
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 60(Tracer**06AN)/100V(Tracer**10AN)(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
Tracer1206AN 10A ①
260W/24V 390W/24V 46V
②
260W/12V 390W/12V 60V
Tracer2206AN 20A
520W/24V 780W/24V
130W/12V 195W/12V
Tracer1210AN 10A
260W/24V 390W/24V
260W/12V 390W/12V
Tracer2210AN 20A 92V
①
520W/24V 780W/24V
②
390W/12V 580W/12V 100V
Tracer3210AN 30A
780W/24V 1170W/24V
520W/12V 780W/12V
Tracer4210AN 40A
1040W/24V 1560W/24V
①At 25℃ environment temperature
②At minimum operating environment temperature

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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 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
Tracer1206AN
10A 4mm2/12AWG
Tracer1210AN
Tracer2206AN
20A 6mm2/10AWG
Tracer2210AN
Tracer3210AN 30A 10mm2/8AWG
Tracer4210AN 40A 16mm2/6AWG

＊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 (Tracer**06AN), 92V
(Tracer**10AN) 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
Tracer1206AN
10A 10A 4mm2/12AWG 4mm2/12AWG
Tracer1210AN
Tracer2206AN
20A 20A 6mm2/10AWG 6mm2/10AWG
Tracer2210AN
Tracer3210AN 30A 30A 10mm2/8AWG 10mm2/8AWG
Tracer4210AN 40A 40A 16mm2/6AWG 16mm2/6AWG

10
 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
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

11
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
Tracer AN 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
grounded. However, according to the practical application, all the negative terminals

12
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 ②and 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 chaper3.3 “Setting”

CAUTION: RS485 communication port’s internal circuit has no isolation

design, so a communication isolator is recommended to connect to the
interface before communicating.

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 4.2
“Troubleshooting”.

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3. Operation

3.1 Button

Mode Note
In load manual mode, it can turn the load On/Off via the
Load ON/OFF
“ENTER” button.
Clear Fault Press the “ENTER” button.
Browsing Mode Press the “SELECT” button.
Press the “ENTER” button. and hold on 5s to enter the setting
mode
Setting Mode Press the “SELECT” button. to set the parameters,
Press the “ENTER” button. to confirm the setting parameters or no
operation for 10s, it will exit the setting interface automatically.

3.2 Interface

1) Status Description
Item Icon Status

PV array Day

14
 Night

No charging

Charging

PV Voltage, Current, Power

Battery capacity, In Charging

Battery Battery Voltage, Current, Temperature

Battery Type

Load ON

Load
Load OFF

Current/Consumed energy/Load mode

2) Fault Indication
Status Icon Description

Battery over Battery level shows empty, battery frame blink,

discharged fault icon blink

Battery over Battery level shows full, battery frame blink, fault
voltage icon blink

Battery over Battery level shows current value, battery frame

temperature blink, fault icon blink

①
Load failure Load overload ,Load short circuit

①When load current reaches1.02-1.05 times 1.05-1.25 times, 1.25-1.35 times and
1.35-1.5 times more than nominal value, controller will automatically turn off loads in
50s, 30s,10s and 2s respectively.

15
3)Browse interface

3.3 Setting
1) Clear the generated energy
Operation:
Step 1: Press the “ENTER” button and hold 5s under the PV generated energy
interface and the value will be flashing.
Step 2: Press the “ENTER” button to clear the generated energy..
2) Switch the battery temperature unit
Press the “ENTER” button and hold 5s under the battery temperature interface.

3) Battery type
①Battery type

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 Item Lead-acid battery Lithium battery
1 Sealed(default) LiFePO4(4s/12V; 8s/24V)
2 Gel Li(NiCoMn)O2 (3s/12V; 6s/24V)
3 Flooded User(9～34V)
4 User(9～17V/12V; 18～34V/24V)

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.

Operation:
Step1: Press the “ENTER” button and hold 5s under the battery voltage interface.
Step2: Press the “SELECT” button when the battery type interface is flashing.
Step3: Press the “ENTER” button to confirm the battery type.

CAUTION：Please refer to chapter③ for the battery control voltage, when

the battery type is User.

②Battery Voltage Control Parameters

Below parameters are in 12V system at 25 ºC, please double the values in 24V
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

17
 CAUTION: Due to diversification of lithium battery types, its control voltage
shall be confirmed with the engineer.

③ User settings
(1)PC setting
 Connection

(2)APP software setting

Download the PC and APP software:

http://www.epever.com——Support——Software(Select the software according to
the description )
(3)Setting the control voltage value
 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.
 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(PCM))+0.2V ;

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 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
※
(PCM)+0.2V ;
WARNING: The required accuracy of PCM 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) Local load mode

Operation:
Step1: Press the “ENTER” button and hold 5s under the load mode interface.
Step2: Press the “SELECT” button when the load mode interface is flashing.
Step3: Press the “ENTER” button to confirm the load mode..
NOTE：Please refer to chapter 4.2 for the load working modes.
①Load 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)

19
 CAUTION: Please set Light ON/OFF, Test mode and Manual mode via
Timer1. Timer2 will be disabled and display "2 n ".

②Load working mode settings

(1)PC setting

(2)APP software setting

Download the PC and APP software:

http://www.epever.com——Support——Software(Select the software according to
the description )
(3)MT50 Setting

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

contact after-sales support.

20
3.4 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.
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.

21
22
4. Protections, Troubleshooting and Maintenance
4.1 Protection
When the charging current or power of the PV array exceeds the controller’s rated current or power, it will be charged 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 through the PV module at night.
Fully protected against battery reverse polarity; no damage will occur for the battery. Correct the miswire to resume normal
Battery Reverse Polarity operation.
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 Over Discharge battery 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
Lithium Battery Low
Threshold(LTPT), the controller will stop charging and discharging automatically. When the detected temperature is higher than
Temperature
the LTPT, the 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
Load Overload the 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
Controller Overheating
85 °C 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
Transients
recommended to install an external surge arrester.

23
 ★When the internal temperature is 81℃, the reducing power charging 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.

4.2 Troubleshooting
Possible reasons Faults Troubleshooting

LCD display during daytime Confirm that PV wire

PV array
when sunshine falls on PV connections are correct and
disconnection
modules properly tight.
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.

Battery level shows Check if battery voltage is

Battery over full, battery frame higher than OVD(over voltage
voltage blink, fault icon blink disconnect voltage), and
disconnect the PV.

When the battery voltage is

Battery over Battery level shows restored to or above LVR(low
discharged empty, battery frame voltage reconnect voltage), the
blink, fault icon blink load will recover

The controller will

Battery level shows automatically turn the system
Battery empty, battery frame off. But while the temperature
Overheating blink, fault icon blink decline to be below 55 ºC, the
controller will resume.
①Please reduce the number
1. The load is no output of electric equipments.
Load Overload 2. ②Restart the controller.
③wait for one night-day cycle
(night time>3 hours).
①Check carefully loads
Load Short Load and fault icon blink connection, clear the fault.
Circuit
②Restart the controller.

24
4.3 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.
 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 for
 solarization, 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.
 Check for dirt, nesting insects and corrosion. If so, clear up 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.

25
5. Technical Specifications
Electrical Parameters
Tracer Tracer Tracer Tracer Tracer Tracer
Item 1206AN 2206AN 1210AN 2210AN 3210AN 4210AN
System nominal ①
12/24VDC Auto
voltage
Rated charge current 10A 20A 10A 20A 30A 40A
Rated discharge
10A 20A 10A 20A 30A 40A
current
Battery voltage
8～32V
range
② ②
Max. PV open 60V 100V
③ ③
circuit voltage 46V 92V
(Battery voltage +2V)～ (Battery voltage +2V)～
MPP voltage range
36V 72V
130W/12V 260W/12V 130W/12V 260W/12V 390W/12V 520W/12V
Max. PV input power
260W/24V 520W/24V 260W/24V 520W/24V 780W/24V 1040W/24V
Self-consumption ≤12mA
Discharge circuit
≤0.23V
voltage drop
Temperature
compensate -3mV/℃/2V (Default)
④
coefficient
Grounding Common negative
RS485 interface 5VDC/200mA
LCD backlight time Default:60S,Range:0~999S(0S:the backlight is ON all the time)
①When a lithium battery is used, the system voltage can’t be identified automatically.
②At minimum operating environment temperature
③At 25℃ environment temperature
④When a lithium battery is used, the temperature compensate coefficient will be 0,and can’t be
changed.
Environmental Parameters
◆
Working environment temperature -25℃～+45℃(100% input and output)
Storage temperature range -20℃～+70℃
Relative humidity ≤95%, N.C.
Enclosure IP30
◆The controller can full load working in the working environment temperature, When
the internal temperature is 81℃, the reducing power charging mode is turned on.
Refer to P24.

26
 Mechanical Parameters
Tracer1206AN Tracer2206AN
Item Tracer3210AN Tracer4210AN
Tracer1210AN Tracer2210AN
Dimension 172x139 x 44mm 220x154x 52mm 228x164x55mm 252x180x63mm
Mounting
124x130 mm 170x145mm 170x155 mm 204x171 mm
dimension
Mounting hole
size Φ5mm
2 2
Terminal 12AWG(4mm ) 6AWG(16mm ) 6AWG(16mm2) 6AWG(16mm2)
Recommended
12AWG(4mm2) 10AWG(6mm2) 8AWG(10mm2) 6AWG(16mm2)
cable
Weight 0.57kg 0.94kg 1.26kg 1.65kg

27
Annex I Conversion Efficiency Curves
2
Illumination Intensity: 1000W/m Temp: 25ºC
Model: Tracer1206AN
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

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

28
Model: Tracer1210AN
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

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

29
Model: Tracer2206AN
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

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

30
Model: Tracer2210AN

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

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

31
Model: Tracer3210AN
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

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

32
Model: Tracer4210AN
1. Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V)

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

33
Annex II Mechanical Dimension Diagram
Tracer1206/1210AN (Unit: mm)

34
Tracer2206AN/2210AN (Unit: mm)

35
Tracer3210AN (Unit: mm)

36
Tracer4210AN (Unit: mm)

Any changes without prior notice! Version number: 2.1

37
HUIZHOU EPEVER TECHNOLOGY CO., LTD.
Beijing Tel: +86-10-82894896/82894112
Huizhou Tel: +86-752-3889706
E-mail: info@epsolarpv.com
Website: www.epsolarpv.com
www.epever.com