Epever ET4415BND Manuale utente

eTracer-BND series

——MPPT Solar Charge Controller

User Manual

Models：

ET4415BND

ET6415BND

ET6420BND

Important Safety Instructions

Please reserve this manual for future review. This manual contains all

instructions of safety, installation and operation for Maximum Power Point

Tracking (MPPT) controller in eTracer-BND series ("the controller" is

referred in this manual).

General Safety Information

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

installation.

No user serviceable component inside controller. DO NOT disassemble or

attempt to repair the controller.

Mount the controller indoors. Avoid direct sunlight, high temperatures and do

not install in locations where water can enter the controller.

Install the controller in well ventilated places, the controller‘s heat sink may

become very hot during operation.

Suggested to install appropriate external fuses/breakers.

Make sure switching off all connections with PV array and the fuse/breakers

close to battery before controller installation and adjustment.

Power connections must remain tight to avoid excessive heating from a

loose connection.

Information générales sur la sécurité

Lisez toutes les instructions et précautions dans le manuel avant

l'installation.

Il n‘y a aucune pièce utilisable pour l‘utilisateur à l‘intérieur du contrôleur. Ne

démontez pas ou n'essayez pas de réparer le contrôleur.

Montez le contrôleur en intérieur. Évitez l'exposition des éléments et ne

laissez pas d'eau entrer dans le contrôleur.

Installez le contrôleur eTracer dans un endroit bien ventilé, le dissipateur de

chaleur de l'eTracer peut devenir très chaud pendant l'utilisation.

Installez les fusibles / coupe-circuits comme indiqué.

Déconnectez le module solaire, le chargeur et le fusible / coupe-circuit

proche de la batterie avant l'installation ou le réglage du contrôleur.

Les connexions d'alimentation doivent rester àproximitépour évier une

chaleur excessive du fait d'une connexion trop lâche.

Contents

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

1.1 Overview .............................................................................................1

1.2 Characteristics.....................................................................................2

1.3 Accessories Instructions......................................................................4

1.4 Maximum Power Point Tracking Technology ......................................4

1.5 Battery Charging Stage.......................................................................6

2 Installation.....................................................................................................9

2.1 General Installation Notes...................................................................9

2.2 PV Array Requirements.......................................................................9

2.3 Mounting ...........................................................................................12

2.4 Wiring................................................................................................13

2.5 Power Up...........................................................................................18

3 LED Indication.............................................................................................20

4 LCD Display & Operation ............................................................................21

4.1 Button operation................................................................................21

4.2 LCD Display & Operation ..................................................................21

5 Protections, Troubleshooting & Maintenance..............................................28

5.1 Protections ........................................................................................28

5.2 Troubleshooting.................................................................................29

5.3 Maintenance......................................................................................30

6 PC Software................................................................................................31

7 Specifications ..............................................................................................33

8 Disclaimer....................................................................................................35

Annex I Conversion Efficiency Curves............................................................36

Annex II Dimensions.......................................................................................42

1 General Information

1.1 Overview

Appreciate you for choosing our MPPT solar charge controller, eTracer-BND

series. Based on multiphase synchronous rectification technology (MSRT) and

common negative design, with dual-core processor architecture and advanced

MPPT control algorithm, the products in this series have the features of high

response speed, high reliability, high industrial standards, etc.

With MPPT control algorithm, in any situation, products of this series can fast

and accurately track out the best maximum power point (MPP) of PV array, in

order to obtain the maximum solar energy in time, MSRT can guarantee very

high conversion efficiency in any charge power, which sharply improves the

energy efficiency of solar system. With Modbus communication protocol

interface, it is convenient for customers to expand applications and monitor in

various fields like telecommunication base station, household system,

wilderness monitoring system, etc.

All-round electronic fault self-test function and enhanced electronic protection

function could furthest avoid damages on system components resulting from

installation errors or system failures.

Features:

Advanced Maximum Power Point Tracking (MPPT) technology, with

efficiency no less than 99.5%.

High quality components, perfecting system performance, with maximum

conversion efficiency of 98.7% and full load efficiency of 98%.

MSRT, realizing high conversion efficiency in the situation of low charge

power.

Ultra-fast tracking speed and guaranteed tracking efficiency.

Accurately recognizing and tracking of multiple power points.

Reliable automatic limit function of maximum PV input power, ensuring no

overload.

Wide MPP operating voltage range.

High-speed and high-powered dual-core processor architecture, improving

system response speed, optimizing system performance.

Die-cast aluminum case for heat dissipating, ensuring excellent heat

dissipation characteristic.

12/24/36/48VDC automatically identifying system voltage or user-defined

working voltage.

Concise human-computer interactive interface, convenient multiple

combination keys, dynamically displaying system operating data and working

condition.

Support 4 charging options: Sealed, Gel, Flooded and User.

Battery temperature compensation function.

Real-time energy statistics function.

With RS-485, RS-232 communication bus interface and Modbus

communication protocol, it is available to meet various communication

requirements in different situations.

Available for PC monitoring and external display unit connecting like MT50

and so on, realizing real-time data checking and parameters setting.

Support software upgrade.

1.2 Characteristics

Item

Name

Item

Name

Heat Sink

RTC battery (model:CR2032)

LCD

RTS Port②

Battery LED indicator

RBVS Port③

Charging LED indicator

Reserved Port

Fault LED indicator

Solar Positive Terminal(+)

Buttons

Solar Negative Terminal(-)④

RS-232 port

Battery Negative Terminal(-)

RS-485 port①

Battery Positive Terminal(+)

①Monitor controller by PC and update controller software via RS485 or

RS232.

②Connect for a RTS (Remote Temperature Sensor) to remotely detect battery

temperature.

③Connect for RBVS (Remote Battery Voltage Sensor) to detect accurate

battery voltage.

④The solar controller negative and battery negative is common.

Figure 1-1 eTracer-BND Series Characteristics

1.3 Accessories Instructions

1. Remote Temperature Sensor (Model: RTS300R10K5.08A)

Acquisition of battery temperature for undertaking

temperature compensation of control parameters, the

standard length of the cable is 3m (length can be

customized). The RTS300R10K5.08Aconnects to the RTS

port (10th ) on the controller.

NOTE：Unplug the RTS, the temperature of battery will be set to

a fixed value 25℃.

2. USB to RS-485 Converter (Model: CC-USB-RS485-150U-3.81)

The USB to RS-485 converter is used to monitor each

controller on the network using Solar Station PC

software and update the firmware. The length of cable

is 1.5m. The CC-USB-RS485-150U-3.81 connects to

the MC1.5-5.08-2L port (8th ) on the controller.

3、CD （PC Software）

Solar Station PC software is used to monitor each controller on the network

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 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

In actual application, as shading from cloud, tree and snow, the panel may

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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