Solar Controller SCDplus⁺ IVT 12 V/24 V, 25 A with display

For the pulse-width modulated, serial charge controllers, 4 different charge programs specially adapted to the respective battery type are predefined:
 

• Lead-acid
• Lead-gel
• Lead-AGM
• LiFePO₄

In addition, a user-specific charging process can be programmed.

The USB interface can be used to establish a connection between the solar controller and the PC. Via the PC, the factory settings on the solar controller can be conveniently changed using the Windows software. Furthermore, the operating data of the solar system can be recorded, stored and evaluated.

The SCplus/SCDplus solar charge controllers can be used for 12 V or 24 V systems. The system voltage is determined automatically.

During the charging process, the temperature is measured via the external temperature sensor and thus the charging end voltage is dynamically adjusted to the temperature conditions.

At high temperatures, the end-of-charge voltage is reduced – overcharging and unnecessary gassing are avoided. At low temperatures, the charging end voltage is increased and the batteries can be optimally recharged.

An even more precise operation of the solar controller is possible due to the integrated voltage sensor connection. Through the cable between the solar charge controller and the battery, the battery voltage is measured even more accurately. This enables even more precise charging.

Depending on the defined battery type (factory setting: lead-acid battery) and its final charge voltage, charging takes place in up to three stages.

In charging stage 1, charging first takes place with maximum current until the corresponding final charging voltage is reached. The end-of-charge voltage of charging stage 1 is then maintained for a predefined period of time before switching to charging stage 2, the trickle charge. The charging current is limited according to the principle of pulse width modulation (PWM).

The user-defined charging profile still offer a third charging stage.
 

Battery type	System voltage 12 V | 24 V
Lead-acid	Charging step 1: Cut-off voltage 14.0 V | 28.0 V Duration 60 minutes Charging step 2: Cut-off voltage 13.7 V | 27.4 V Duration unlimited Charging step 3: Not available
Lead-gel	Charging step 1: Cut-off voltage 14.1 V | 28.2 V Duration 90 minutes Charging step 2: Cut-off voltage 13.7 V | 27.4 V Duration unlimited Charging step 3: Not available
Lead-AGM	Charging step 1: Cut-off voltage 14.7 V | 29.4 V Duration 60 minutes Charging step 2: Cut-off voltage 13.8 V | 27.6 V Duration unlimited Charging step 3: Not available
LiFePO4	Charging step 1: Cut-off voltage 14.2 V | 28.4 V Duration 60 minutes Charging step 2: Cut-off voltage 13.8 V | 27.6 V Duration unlimited Charging step 3: Not available
User defined	Charging step 1: Cut-off voltage user defined Duration user defined Charging step 2: Cut-off voltage user defined Duration user defined Charging step 3: Cut-off voltage user defined Duration unlimited

2 LEDs indicate quickly and reliably the ongoing charging step, warn of deep discharging and show the state of the load output.

The SCplus/SCDplus Solar Controllers offer an integrated standby function. In the case of insufficient solar power the solar controller switches into standby mode. This way, the internal current consumption of the solar controller is reduced by up to 40 %.

With this, the connected battery is preserved and unnecessary discharging prevented. If sufficient solar power is available the solar controller returns to active mode automatically. Furthermore, the solar controller can be switched into active mode manually via push button.

Many individual settings can be made for the IVT solar controllers of the SCplus-/SCDplus-series.

The load output is individually programmable. The following options can be set for the load output:

1. Timer function
    Load output switches on or off at the defined times.

2. Night light function
    If there is no solar power, the load output switches on after 2 minutes.
    off again when solar power is present.

3. Automatic on/off
    When the end-of-discharge voltage is reached, the load output switches off automatically.
    As soon as the restart voltage is reached, on again.

4. Permanently off
    When the end-of-discharge voltage is reached, the load output remains permanently off,
    even after the battery capacity has reached the reset voltage again (factory setting).
    (factory setting).

The load output can also be switched on or off manually by push button.

Special feature of SCDplus solar controllers: Clear display – easy operation

The SCDplus controllers also have a clear and well-structured LCD display. It provides information on the most important parameters such as system voltage (12 V, 24 V or 48 V), solar input (energy meter), battery status (battery voltage, state of charge, charging current), ambient temperature, set temperature coefficient and load output (load current).

The following parameters can be configured via the display

• Charging procedure
• Cut-off voltage
• Reset voltage
• Temperature coefficient
• Load output (reclosing yes/no, timer function and nightlight function)

A connection between the solar controller and PC can be established using the USB interface. With the Windows software, the charging profile, deep discharge protection, temperature coefficient, function of the load output, time and date can be configured conveniently on the PC.

In addition, the operating data of the solar system can be logged, monitored and output as a *.txt file for evaluation.
 

Data logging and evaluation with free Windows software

Download Software >

The following parameters are recorded every second:

• Time (Time)
• Battery voltage (Voltage)
• Battery charge current
• Load current
• Temperature

More detailed information about the software can be found in the SCplus-/SCDplus-series user manual (see Downloads).

All important protective functions such as overcharge protection, deep discharge protection and reverse polarity protection are controlled fully automatically and without monitoring via the microprocessor.

Overcharge protection
As soon as the final charging voltage is reached, the solar charge controller switches off the charging current. This prevents overcharging and damage to the solar battery.

Deep discharge protection
To protect the battery from irreparable damage in case of deep discharge, the connected load output is switched off when the final discharge voltage is reached. Depending on the setting of the load output, it remains switched off or is switched on again automatically if the battery has been sufficiently recharged. The end-of-discharge voltage and reset voltage can be individually parameterized via the display or the software. An optical warning (LED) is given shortly before the deep discharge limit is reached.

Short circuit and reverse polarity protection
The controllers are protected against short-circuit and reverse polarity by a flat fuse.

IVT products are manufactured to a high quality and following strict quality guidelines. We are certain about the longevity so that we add another year to the statutory manufacturer warranty free of charge. Rechargeable batteries and batteries are excluded from this warranty.

Do you have any questions? Our expert staff will be happy to advise you on all questions regarding inverters, voltage converters, solar technology, charging technology as well as mobile light. Please contact us.

Phone:  +49 9622 719910
E-mail:   info@ivt-hirschau.de

• SCDplus Solar Controller 12 V/24 V, 25 A, with display
• External temperature sensor
• Connection adaptor for battery sensor
• Operation manual in DE, GB, FR, NL