MPM PWM Heater Charging Controller for Solar Solar Panels

Model: ACTii AC7391

EAN: 6931240073919 SKU: 739155867

• PWM regulator for heaters with the algorithm for searching the maximum MPPT power point from solar panels. The controller enables the supply of standard DHW electric boilers from solar panels
• The controller is equipped with a temperature sensor, which allows the boiler to stop heating above the set temperature. It is possible to change the set temperature.
• The controller displays: Voltage (V), Power (W) transferred to the heater, Water temperature in the boiler
• The controller can be turned off and on (plus and minus buttons)
• The OUT diode blinking indicates current transfer to the heater
• Relay output informing about heater interruption. They can be used to connect external devices
• The device is mounted on a DIN TH35 rail
• The controller has thermal protection and active cooling depending on the temperature of the actuator and power.
• For safety reasons, the high-voltage part is galvanically separated from the power supply.
• Two operating modes: Automatic mode, Mode with the option of setting the voltage activation thresholds
• Possibility of connecting a wind turbine instead of a solar panel
• Made in EU

Description

PWM regulator for heaters with the algorithm for searching the maximum MPPT power point from solar panels.

The controller enables the supply of standard DHW electric boilers from solar panels

The solar panel operates at maximum power only at the optimal voltage. Connecting the heater directly to the photovoltaic panel causes too heavy load and as a result voltage drop. At reduced operating voltage, the panel produces even several times less current than at optimal voltage. The use of a charge regulator eliminates this problem. Even on cloudy days it will be possible to heat the water in the boiler.

A buffer module containing capacitors, a choke, diodes is added to the regulator, which allows greater efficiency (up to 30%) and reduction of interference caused by PWM regulation.

The controller is equipped with a temperature sensor, which allows the boiler to stop heating above the set temperature.

The device is equipped with an additional relay output (without potential) enabling notification of external devices that water heating has been completed (reaching the set temperature) or that the device has failed. This output allows you to connect additional devices.

Specification

parameters

Supply voltage: 11V to 14.4V

Panel voltage: 10V to 400V DC

Panel current: MAX 10A

Maximum heater power: 2kW

Maximum power of panels: 2kW

Current drawn from the power supply without cooling: 0.08 A

Current drawn from the power supply with cooling: 0.23A

Accuracy of temperature measurement 0.1 degrees

Modes of operation:

The regulator has the ability to change the mode to work in the area between the min and max voltage, as it was in earlier versions. This option is especially useful for wind farms.

Mode one:

It is fully automatic and starts working immediately after connecting. When the voltage on

input exceeds the minimum voltage threshold set with the MINUS button.

If the voltage during tuning falls below this value, the search remains

interrupted. Setting the minimum value allows free heating

water and also the ability to charge batteries.

Second mode:

Switching voltage thresholds can be set (from which it starts to increase

PWM value) and maximum voltage (from which the duty cycle is filled)

is 100%), i.e. all the energy of the cells goes directly to the heater.

Additionally, the use of this method allows panels to be kept at MPPT

(the largest power point), and is especially useful for power stations

wind. In this case, it does not allow excessive acceleration

turbine as well as allows its free start.

dimensions:

Controller dimensions (length, width, depth): wy11mm

Buffer dimensions (L, W, D): 90x36x64mm

Length of temperature sensor cable: about 100cm

Certificates and standards

CE, RoHS

Kit Contents

Regulator

Buffer

Package

Instruction

Temperature sensor

Warranty

12 months

Dimensions, Weight

Product dimensions: 90 x 54 x 64 mm (D x W x H)

Packaging dimensions: 100 x 120 x 60 mm (D x W x H)

Product weight: 330 g

Weight with packaging: 376 g

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