Epever ITracer-ND Series Manuale utente

MPPT Solar Charge Controller

User Manual

Model：IT6415ND

Important Safety Instructions

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

instructions for safety, installation, and operation for the Maximum Power Point

Tracking (MPPT) controller in iTracer6415ND ("the controller" is referred to in

this manual).

General Safety Information

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

installation.

No user-serviceable component exists inside the controller. DO NOT

disassemble or attempt to repair the controller.

Mount the controller indoors. Avoid direct sunlight and 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.

It is suggested to install appropriate external fuses/breakers.

Disconnect all PV array connections and the battery fuse/breakers before

installation and adjustment.

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

loose connection.

Contents 
General Information 1 
1 Overview 1 
2 Characteristics 3 
3 Accessories Instructions 4 
4 Maximum Power Point Tracking Technology 5 
5 Battery Charging Stage 6 
Installation 10 
1 General Installation Notes 10 
2 PV Array Requirements 11 
3 Mounting 11 
4 Wiring 12 
5 Power ON 17 
LED Indication 18 
LCD Display & Operation 19 
1 Button operation 19 
2 LCD Display & Operation 19 
Protections, Troubleshooting & Maintenance 28 
1 Protections 28 
2 Troubleshooting 29 
3 Maintenance 31 
PC Software 32 
Specifications 34 
Disclaimer 35 

Annex I Conversion Efficiency Curves 36

Annex II Dimensions 38

1 General Information

1.1 Overview

Appreciate you for choosing our MPPT solar charge controller, iTracer6415ND.

Based on the multiphase synchronous rectification technology (MSRT),

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

MPPT control algorithm, the products own the features of high response speed,

high reliability, high industrial standards, etc.

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

fast and accurately track out the best maximum power point (MPP) of the PV

array. To obtain the maximum solar energy in time, MSRT can guarantee high

conversion efficiency in any charging power. It sharply improves the energy

efficiency of the solar system. The Modbus communication protocol interface

makes it convenient to expand applications and monitor various fields. Like

telecommunication base stations, household systems, wilderness monitoring

systems, etc.

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

could prevent damage to system components from installation errors or

system failures.

Features:

Advanced Maximum Power Point Tracking (MPPT) technology, with no

less than 99.5% efficiency.

High-quality components, perfecting system performance, with a maximum

conversion efficiency of 98% and full load efficiency of 97%.

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

power.

Ultra-fast tracking speed and guaranteed tracking efficiency.

Multiple power point recognizing and tracking accuracy.

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 characteristics.

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

voltage.

Concise human-computer interactive interface, convenient multiple

combination keys, dynamically displaying system operating data and

working conditions.

Multiple load control modes: manual control, light ON/OFF, light on+timer,

and time control.

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 can 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.

1.2 Characteristics

Figure 1-1 Controller Characteristics

Item

Name

Item

Name

Heat Sink

RTS Port②

LCD

RBVS Port③

Battery LED indicator

Solar Positive Terminal(+)

Charging LED indicator

Solar Negative Terminal(-)④

Fault LED indicator

Load Negative Terminal(-)

Buttons

Battery Negative Terminal(-)

RS-232 port

Battery Positive Terminal(+)

RS-485 port①

Load Positive Terminal(+)

RTC battery (model:CR2032)

①Monitor controller by PC via RS485 or RS232.

②Connect an RTS (Remote Temperature Sensor) to detect battery

temperature remotely.

③Connect an RBVS (Remote Battery Voltage Sensor) to detect battery

voltage accurately.

④The PV negative, battery negative, and load negative are common.

1.3 Accessories Instructions

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

The standard cable length is 3m (it can be customized) to

acquire battery temperature for undertaking temperature

compensation of control parameters. The

RTS300R10K5.08Aconnects to the RTS port (10th ) on the

controller.

CAUTION

Unplug the RTS, and the battery's temperature will be set to a

fixed value of 25℃.

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

The USB to RS-485 converter monitors each controller

on the network using Solar Station PC software and

updates the firmware. The cable length 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 the solar array, there is a maximum

energy output point (Max Power Point) on its curve. Traditional controllers,

adopting the switch charging technology and PWM charging technology, can't

charge the battery at the maximum power point. They can't harvest the

maximum energy available from the PV array. While 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 locate the array's maximum power point. The tracking

process is fully automatic and does not need user adjustment.

As shown in Figures 1-2, the curve is the characteristic curve of the array. The

MPPT technology will boost the battery charge current by tracking the MPP.

Assuming the conversion efficiency of the solar system is 100%, the following

formula is established:

Input power (PPV)= Output power (PBat)

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

Normally, the VMp is always higher than VBat. Due to the principle of energy

conservation, the IBat is always higher than IPV. The greater the discrepancy

between VMp &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, and the shaded area is the

charging range of a traditional solar charge controller (PWM Charging Mode).

It can diagnose that the MPPT mode can improve the usage of solar energy

resources. According to our test, the MPPT controller can raise 20%-30%

efficiency compared to the PWM controller. (Value may fluctuate due to the

ambient circumstance's influence and energy loss.)

Figure 1-2 Maximum Power Point Curve

The panel may appear Multi-MPP as shading from cloud, tree, or snow in

actual application. However, there is only one real Maximum Power Point. As

the Figure 1-3 show:

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. It may waste most solar energy resources

and affect the system's normal operation. The typical MPPT algorithm,

improve the array's utilization rate and avoid wasting resources.

1.5 Battery Charging Stage

The controller has a three-stage battery charging algorithm (Bulk Charging,

Constant Charging, and Float Charging) for rapid, efficient, and safe battery

charging.

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