SC MPPT series Solar charge controller User Manual - OPTI

SC MPPT series

Solar charge controller

SC-10 MPPT: 10A，100VDC max

SC-15 MPPT: 15A，100VDC max

SC-20 MPPT: 20A，100VDC max

User Manual

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Solar charge controller

Dear Clients,

Thanks for selecting the SC MPPT series solar controller. Please take the time to read this user manual, this will help you to make full use of many advantages the controller can provide your solar system.

This manual gives important recommendations for installing and using and so on. Read it carefully in your own interest please.

1.Description of Function

3.Dimensions

SC MPPT series solar controller is based on an advanced maximum power point tracking (MPPT) technology developed, dedicated to the solar system, the controller conversion efficiency up to 98%.

It comes with a number of outstanding features, such as:

Innovative MPPT technology, conversion efficiency up to 98%

Many choices of battery type and working mode

Clear readable display of charge/discharge, battery and error description

12V/24V automatic recognition

Temperature compensation

Perfect EMC design

Four stage charge way: MPPT, boost, equalization, float

Full automatic electronic protect function

189

73

164

2.Safety instructions and waiver of liability

2.1 Safety

①The solar charge controller may only be used in PV systems in accordance with this user manual and the specifications of other modules manufacturers. No energy source other than a solar generator may be connected to the solar charge controller.

②Batteries store a large amount of energy, never short circuit a battery under all circumstances. We strongly recommend connecting a fuse directly to the battery to protect any short circuit at the battery wiring.

③Batteries can produce flammable gases. Avoid making sparks, using fire or any naked flame. Make sure that the battery room is ventilated.

④Avoid touching or short circuiting wires or terminals.

Be aware that the voltages on special terminals or wires can be as much as twice the battery voltage. Use isolated tools, stand on dry ground, and keep your hands dry.

⑤Keep children away from batteries and the charge controller.

2.2 Liability Exclusion

The manufacturer shall not be liable for damages, especially on the batter y, caused by use other than as intended or as mentioned in this manual or if the recommendations of the batter y manufacturer are neglected. The manufacturer shall not be liable if there has been ser vice or repair carried out by any unauthorized person, unusual use, wrong installation, or bad system design.

4.Installation

The following diagrams provide an overview of the connections and the proper order.

③ ④ ② ① ⑥ ⑤

To avoid any voltage on the wires, first connect the wire to the controller, then to the battery, panel or load.

Make sure the wire length between battery and controller is as short as possible.

Recommended minimum wire size:

10A : 2.5mm²; 15/20A : 4mm².

Be aware that the negative terminals of SC MPPT are connected together and therefore have the same electrical potential. If any grounding is required, always do this on the negative wires.

Connecting capacitive load may trigger short circuit protection.

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4.1 Mounting location requirements

Do not mount the solar charge controller outdoors or in wet rooms. Do not subject the solar charge controller to direct sunshine or other sources of heat. Protect the solar charge controller from dirt and moisture. Mount upright on the wall on a non-flammable substrate. Maintain a minimum clearance of 10cm below and around the device to ensure unhindered air circulation. Mount the solar charge controller as close as possible to the batteries.

4.2 Fastening the solar charge controller

Mark the position of the solar charge controller fastening holes on the wall, drill 4 holes and insert dowels, fasten the solar charge controller to the wall with the cable openings facing downwards.

4.3 Connection

We strongly recommend connecting a fuse directly to the battery to protect any short circuit at the battery wiring.

Solar PV modules create current whenever light strikes them.

The current created varies with the light intensity, but even in the case of low levels of light, full voltage is given by the modules. So, protect the solar modules from incident light during installation. Never touch uninsulated cable ends, use only insulated tools, and make sure that the wire diameter is in accordance with the solar charge controller’s expected currents. Connections must always be made in the sequence described below.

1st step: Connect the battery

Connect the battery connection cable with the correct polarity to the middle pair of terminals on the solar charge controller (with the battery symbol). If the system is 12V, please make sure that the battery voltage is within 10V~16V, else if the system is 24V, the battery voltage should between 20V~30V. If the polarity is correct, the LED on the controller will begin to show.

2nd step: Connect the solar module

Ensure that the solar module is protected from incident light. Ensure that the solar module does not exceed the maximum permissible input current.

Connect the solar module connection cable to the correct pole of the left pair of terminals on the solar charge controller (with the solar module symbol).

3rd step: Connect loads

Connect the load cable to the correct pole of the right pair of terminals on the solar charge controller

(with the lamp symbol). To avoid any voltage on the wires, first connect the wire to the load, then to the controller.

4th step: Final work

Fasten all cables with strain relief in the direct vicinity of the solar charge controller (clearance of approx.10cm). www.opti-solar.com

5.Star ting up the controller

5.1Self Test

As soon as the controller is supplied with batter y, it star ts a self test routine. Then the display changes to normal operation.

5.2System Voltage

The controller adjusts itself automatically to 12V or 24V system voltage. As soon as the batter y voltage at the time of star t-up is within 10V to 16V, the controller implies a 12V system, else if the batter y voltage is within 20V to 30V, the controller implies a 24V system.

If the batter y voltage is not within the normal operating rang(ca.10 to 16V or ca.20 to 30V)at star t- up, a status display according to the section 6.2

Charge & Error display.

5.3Batter y Type

The Max-Spirit series controller applies to Liquid and Gel batter y, the factor y default setting is suitable for liquid batter y.

Please refer to 7.1.2 change setting.

5.4 Work Mode

The work mode of the controller is selectable

(Standard and D2D), the factor y default setting is standard.

Please refer to 7.1.1 change setting.

Day/Night threshold

Day/Night threshold

Sunset

Light on

Light on

Light off

Sunrise

Standard

D2D(Dusk to Dawn)

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6.Display Functions

The controller is equipped with 6 LEDS.

7. Inter face Description

In normal operation, the controller shows charge or discharge status, battery capacity and load status.

6.1 Batter y Capacity display：

Yellow 1 Yellow 2

Green Red

Red On, Energy of Battery <25%.

Yellow 1 On, Energy of Battery is about 25~50%.

Yellow 2 On, Energy of Battery is about 50~75%.

Green On, Energy of Battery is about 75~100%.

The percentage corresponds to the available energy until low voltage disconnect in relation to a fully charged

DIP Switch

7.1 DIP Switch ON

1 2

Reser ved

Inter face

7.1.1 DIP switch stall 1 -- Work mode (Standard and D2D) settings, the default is Standard(As shown in figure). If slide the DIP switch to “ON”, the controller works in D2D mode.

ON ON

D2D

Standard

1 2 1 2

7.1.2 DIP switch stall 2 -- Battery type selection, the default setting is liquid battery (As shown in figure). If slide the DIP switch to "ON", the battery type is selected as GEL.

ON

GEL

ON battery.

6.2 C harge & Error display （INFO）：

INFO green flashing, that is charging (fast flash

Red Green for MPPT charge state, slow flash for non MPPT

Error

Loads are not supplied

Batter y is not being charged during the day

Over voltage protection

Does not recognize the system voltage charge state); otherwise, no charge;

INFO Red On, is Error Status. For more details,

1 2 1 2

7.2 Reser ved Inter face

External temperature sensor and COM communication interface , please consult the supplier.

八、安全特性及故障描述

please see table below.

Display Reason

Red(INFO and Bat.)

LED are lighted

Batter y is low

Remedy

Load will reconnect as soon as battery is recharged

Red

Red LED

Fast flash: over current/short circuit of loads

Slow flash: is flashing over temperature protection

Red Green

Solar array faulty or wrong polarity

Switch off all loads.

Remove short circuit.

Auto recovery when the temperature is below set value.

Remove faulty connection/

Green LED is off reverse polarity

Batter y voltage

Check if other sources overcharge

Red(INFO)

All LED

Lighted too high

(>15.5V/31V) and

Green(Bat.) Battery wires or

LED are lighted battery fuse damaged, battery has high resistance the battery.

If not, controller is damaged.

Check batter y wires, fuse and batter y.

The batter y voltage is not within the normal operating rang

Charge or discharge he battery to make the voltage within the normal range at star t-up

Reverse polarity

Short circuit

Over current

Reverse

Current

Over voltage

Under voltage

Over temp.

Solar terminal

Protected *1

Protected

Protected

Max.100V *4

Battery terminal

Protected *1 switches off the load if the temperature reaches the set value.

*1 Controller can not protect itself in a 24V system when polarity of battery or solar is reversed.

Load terminal

Protected *2

Switches off immediately

Switches off with delay

Switches off

*2 Controller can protect itself, but loads might be damaged.

*3 Battery must be protected by fuse, or battery will be permanently damaged.

Protected *3

Max. 40V

*4 The solar panel voltage should not exceed this limit for a long time as voltage protection is done by a varistor.

Warning: The combination of different error conditions may cause damage to the controller.

Always remove the error before you continue connecting the controller.

Page 3 of 4 pages

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9.Technical Data

Technical Data SC-10 M P P T

98%

SC-10 M P P T

2 0 A

12V: 150W ,24V: 300W 12V: 225W, 24V: 450W 12V: 300W, 24V: 600W

13.7V/27.4V (25℃)

14.5V/29.0V (25℃)

SC-15 M P P T

System voltage 12V/24V automatic recognition

Max solar current or load current 1 0 A 1 5 A

Max MPPT efficiency

Max PV input power

Float voltage

Boost voltage

Equal voltage

Day/Night threshold

14.8V/29.6V (25℃) （Liquid）

5.0V/10.0V

Load disconnect voltage

Load reconnect voltage

11.2~11.8V/22.4~23.6V

12.5V/25.0V

Batter y type

Work mode

Liquid, Gel

Standard, D2D(Dusk to Dawn)

Temperature compensation

Max solar voltage

Max batter y voltage

Dimensions/Weiht

-4.17 mV/K per cell (Boost and Equal charge),

-3.33 mV/K per cell (Float charge)

100 V

40 V

164*189*73mm / 800g

Max power consumption 10mA

Temp. Range during operation -35℃ ~ +55 ℃

164*189*73mm / 900g

Storage temperature

Relative humidity

Case protection

-40℃ ~ +80 ℃

10%~90% Non-condensation

IP22

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