20A 48V PWM Solar System Charge Controller with LED display

20A 48V PWM Solar System Charge Controller has three load work ways and can be easily used in varies streetlighting and monitors

20A 48V PWM Solar System Charge Controller

Function

1. LED digital display and one-key operation, easy to use

2. The improved 3-section computing method can weekly give the battery a Balanced charging. It can stop the battery from being unbalancing and vulcanizing and let the battery been used for more time.

3. the controller is equipped with the serial PWM charging main circuit with additional 3%~6% efficiency than the non-PWM circuit which can work for more time and increase the using period of the system.  

4. Controller has three load work ways and can be easily used in varies streetlights and monitors.

5, Visualized LED display which can let the users get to know the conditions of solar power and storage battery.

6. Overcharge, over discharge and overload protection; Electronic short circuit protection; Reverse connect preventing protection.

7. Lightning prevention

Controller panel figure

Wiring figure

Installation and usage

1,Installation should be fixed and the sizes are as follows:

2,Outline size and Installation size:

3,Wire preparation: make sure the wire lengthen firstly. Reduce the length of the wire as much as possible after the assurance of the installation allocation in order to decrease the electrical loss.

4,Connect the battery firstly, pay attention to the pole and do not connect inversely. The indicator light of the controller will make no indication if the batteries are connected wrongly and the internal components of the controller will not be damaged. If connected rightly, BATTERY indicator light should indicate.

5,Connect the wires of solar-cell panel secondly, pay attention to the pole and do not connect inversely. CHARGE indicator light will light or flash due to charging after 10s if the sunshine exists. If not, check the connection. Notice: solar-cell panel should be located outside and in faced with sunshine.

6,Connect the load line lastly; connect the LED illuminant or DC load line to the output electrical pole of controller. Pay attention to the pole and do not connect inversely in case of breaking the equipment.

Indication instruction of LED light

LED	Status	Function
Charge	off	At night or battery is failed to connect
	light normally	Balanced charge
	slow flash	Float charge
	double flash	Daytime (no charge)
BATTERY	Red lamp in double flash	(<11.0V); ×2/24V Under voltage (<11.0V); ×2/24V
	Green lamp in double flash	(11V~12.0V) ; ×2/24V Under voltage warning (11V~12.0V) ; ×2/24V
	Green lamp in slow flash	(12.0V~13.0V) ; ×2/24V Normal voltage (12.0V~13.0V) ; ×2/24V
	Green lamp lights normally	(>13.0V) ; ×2/24Vbattery voltage (>13.0V) ; ×2/24V
PRORECTION	Red lamp in slow flash	Load line in under voltage or high voltage protection
	Red lamp in double flash	Load line short circuit protection
	Red lamp lights for long time	Load line over load protection
	Dot light loop	The voltage of electric automatic identifying battery in the controller in medium

Technology qualification

System voltage	12V/24V Auto
System current	15A/20A
No-load loss	<10mA
Solar energy input voltage	<55V
Over voltage protection	16.5V; ×2/24V
Over voltage recovery	15.0V; ×2/24V
Balance charge voltage	14.6V; ×2/24V(25°C) time maintenance 1H
Increase charge voltage	14.4V; ×2/24V(25°C) time maintenance 1H
Float charge voltage	13.8V; ×2/24V(25°C)
Charging return voltage	13.3V; ×2/24V(25°C)
Discharge protection voltage	11.1V; ×2/24V
Discharge protection voltage	12.8V; ×2/24V
Temperature compensation	-4.0mv/°C/2V
Daytime identifying voltage	7.0V; ×2/24V
Night identifying voltage	3.0V ×2/24V
Over-load, short-circuit protection	1.5 times rating current 30S 1.5 times rating current 10S overload current protection ≥3 times rating current short circuit protection
Work temperature	-25°C to +60°C
Protection degree	IP30
Outline size	141.5mm*84mm *23.6 mm
weight	0.35kg

General safety and usage advice

Advice for safety

1. The battery saves large amount of energy, do not let it in short circuit in any case. We suggest to connecting the battery wire with fuse. (Slow motion type, in accordance with rating of the controller.).

2. Battery can produce combustible gas. Keep it away from the spark, fire or the flame which is without protection. Make the battery storage ventilated.

3. Do not touch or short-circuit the wire or terminal for some wires or terminals can produce the rating voltage which is two times of the battery. Insulation tools should be used when in operation.

4. Make sure to keep the children away from the battery and controller.

5. Please observe the manufacture's safety advice.

Range of use

Controller is only applicable to the system which is solar energy with 12V/24V rating voltage. Battery is in plumbic acid with liquid openings or be sealed (by VRLA valve) and can also be ferrous phosphoric acid lithium. Note the type before you buy it.

20A 48V PWM Solar System Charge Controller with LED display