MH-R2420, 2430, 2440-12/24V 20A To 40A MPPT Solar Charge Controller Can Charge Lithium Battery

MH-R2420, 2430, 2440-12/24V 20A To 40A MPPT Solar Charge Controller Can Charge Lithium Battery
MH-R2420, 2430, 2440-12/24V 20A To 40A MPPT Solar Charge Controller Can Charge Lithium Battery
MH-R2420, 2430, 2440-12/24V 20A To 40A MPPT Solar Charge Controller Can Charge Lithium Battery
MH-R2420, 2430, 2440-12/24V 20A To 40A MPPT Solar Charge Controller Can Charge Lithium Battery

 

Product Features

  • With the advanced dual-peak or multi-peak tracking technology, when the solar panel is shadowed or part of the panel fails resulting in multiple peaks on the I-V curve, the controller is still able to accurately track the maximum power point.
  • A built-in maximum power point tracking algorithm can significantly improve the energy utilization efficiency of photovoltaic systems, and raise the charging efficiency by 15% to 20% compared with the conventional PWM method.
  • A combination of multiple tracking algorithms enables accurate tracking of the optimum working point on the I-V curve in an extremely short time.
  • The product boasts an optimum MPPT tracking efficiency of up to 99.9%.
  • Advanced digital power supply technologies raise the circuit's energy conversion efficiency to as high as 98%.
  • Charging program options are available for different types of batteries including gel batteries, sealed batteries, open batteries, lithium batteries, etc.
  • The controller features a limited current charging mode. When the solar panel power exceeds a certain level and the charging current is larger than the rated current, the controller will automatically lower the charging power and bring the charging current to the rated level.
  • Instantaneous large current startup of capacitive loads is supported.
  • Automatic recognition of battery voltage is supported.
  • LED fault indicators and an LCD screen which can display abnormality information help users to quickly identify system faults.
  • Historical data storage function is available, and data can be stored for up to a year.
  • The controller is equipped with an LCD screen with which users can not only check device operating data and statuses, but also modify controller parameters.
  • The controller supports standard Modbus protocol, fulfilling the communication needs of various occasions.
  • The controller employs a built-in over-temperature protection mechanism. When temperature surpasses the set value, the charging current will decline in linear proportion to the temperature so as to curb the temperature rise of the controller, effectively keeping the controller from being damaged by overheat.
  • Featuring a temperature compensation function, the controller can automatically adjust charging and discharging parameters in order to extend the battery's service life.
  • TVS lighting protection.

 

 

LCD Startup and Main Interface

 

LED Indicators

PV array indicator

Indicating the controller's current charging mode.

BAT indicator

Indicating the battery's current state.

LOAD indicator

Indicating the loads' On/ Off and state.

ERROR indicator

Indicating whether the controller is functioning normally.

 

PV array indicator:

No.

Graph

Indicator state

Charging state

Steady on

MPPT charging

Slow flashing

(a cycle of 2s with on and off each lasting for 1s)

Boost charging

Single flashing

(a cycle of 2s with on and off lasting respectively for

0.1s and 1.9s)

Floating charging

Quick flashing

(a cycle of 0.2s with on and off each lasting for 0.1s)

Equalizing charging

 

Double flashing

(a cycle of 2s with on for 0.1s, off for 0.1s, on again

for 0.1s, and off again for 1.7s)

 

Current-limited charging

 

Off

No charging

 

BAT indicator:

Indicator state

Battery state

Steady on

Normal battery voltage

Slow flashing (a cycle of 2s with on and off each lasting for 1s)

Battery over-discharged

Quick flashing (a cycle of 0.2s with on and off each lasting for 0.1s)

Battery over-voltage

 

LOAD indicator:

Indicator state

Battery state

Off

Load turned off

Quick flashing (a cycle of 0.2s with on and off each lasting for 0.1s)

Load overloaded/ short-circuited

Steady on

Load functioning normally

 

ERROR indicator:

Indicator state

Battery state

Off

System operating normally

Steady on

System malfunctioning

 

Key Operations

▲Up

Page up; increase the parameter value in setting

▼Down

Page down; decrease the parameter value in setting

►Return

Return to previous menu (exit without saving)

◄Set

Enter into sub-menu; set/ save

Turn on/ off loads (in manual mode)

 

 

 

1.Electric Parameters

Parameter

Value

Model

MH-R2420

MH-R2430

MH-R2440

System voltage

12V/24VAuto

No-load loss

0.7 W to 1.2W

Battery voltage

9V to 35V

Max. solar input voltage

100V(25℃)90V(-25℃)

Max. power point voltage range

Battery Voltage+2V to 75V

Rated charging current

20A

30A

40A

Rated load current

20A

Max. capacitive load capacity

10000uF

Max. photovoltaic system input power

260W/12V

520W/24V

400W/12V

800W/24V

520W/12V

1040W/24V

Conversion efficiency

≤98%

MPPT tracking efficiency

>99%

Temperature compensation factor

-3mv/℃/2V(default)

Operating temperature

-35℃  to +45℃

Protection degree

IP32

Weight

1.4Kg

2Kg

2Kg

Communication method

RS232

Altitude

≤ 3000m

Product dimensions

210*151*59.5mm

238*173*72.5mm

238*173*72.5mm

 

2.Battery Type Default Parameters (parameters set in monitor software)

Parameters cross-reference table for different types of batteries

Voltage to set Battery type

Sealed lead-acid battery

Gel lead-acid battery

Open lead-acid battery

User (self-customized)

Over-voltage cut-off voltage

16.0V

16.0V

16.0V

9~17V

Equalizing voltage

14.6V

——

14.8V

9~17V

Boost voltage

14.4V

14.2V

14.6V

9~17V

Floating charging voltage

13.8V

13.8V

13.8V

9~17V

Boost return voltage

13.2V

13.2V

13.2V

9~17V

Low-voltage cut-off return voltage

12.6V

12.6V

12.6V

9~17V

Under-voltage warning return voltage

12.2V

12.2V

12.2V

9~17V

Under-voltage warning voltage

12.0V

12.0V

12.0V

9~17V

Low-voltage cut-off voltage

11.1V

11.1V

11.1V

9~17V

Discharging limit voltage

10.6V

10.6V

10.6V

9~17V

Over-discharge time delay

5s

5s

5s

1~30s

Equalizing charging duration

120minutes

——

120minutes

0~600minutes

Equalizing charging interval

30days

0days

30days

0~250D

(0 means the equalizing charging function is disabled)

Boost charging duration

120minutes

120minutes

120minutes

10~600minutes

When selecting User, the battery type is to be self-customized, and in this case, the default system voltage parameters are consistent with those of the sealed lead-acid battery. When modifying battery charging and discharging parameters, the following rule must be followed:

  • Over-voltage cut-off voltage>Charging limit voltage ≥ Equalizing voltage ≥ Boost voltage ≥ Floating charging voltage >Boost return voltage;
  • Over-voltage cut-off voltage > Over-voltage cut-off return voltage;
  • Low-voltage cut-off return voltage > Low-voltage cut-off voltage ≥ Discharging limit voltage;
  • Under-voltage warning return voltage >Under-voltage warning voltage ≥ Discharging limit voltage;
  • Boost return voltage >Low-voltage cut-off return voltage.

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