Package including:

1. 1pcs solar controller
2. 1pcs user manual

ViewStar solar charge controller that adopts the most advanced digital technique, displays on the LCD and operates fully automatically. The Pulse Width Modulation (PWM) battery charging and the unique control technology can greatly increase the lifetime of battery.

The controller is for off-grid solar system, and protects the battery from being over charged by the solar module and over discharged by the loads. The charging process has been optimized for long battery life and improved system performance. The comprehensive self-diagnostics and electronic protection functions can prevent damage from installation mistakes or system faults.

 

Application:

Ideal for medium off-grid solar system with LCD display.

★ Solar power station

★ Solar lighting system

 

Features:
·Adopt graphics dot-matrix LCD screen and HMI (human-machine interface) with 4 buttons, integrated menu displaying and operation
·32 bit MCU with high speed
·12 bit A/D high-precision sampling to ensure accuracy 
·Excellent EMC design
·High efficient Series PWM charging
·Use MOSFET as electronic switch
·Widely used, automatically recognize day/night
·Humanized design of browser interface, undertake every operating conveniently
·Full control parameters setting and modification, diversified load control mode
·Gel, Sealed and Flooded battery type option
·Adopt temperature compensation, correction algorithm for charging and discharging parameters automatically

Electronic Protections:
·Overheating 
·Over discharging 
·Over charging
·Load overload 
·Load short circuit 
·PV reverse polarity 
·Battery reverse polarity

Electrical parameters	VS1024N	VS2024N	VS3024N	VS4024N	VS5024N	VS6024N
Normal system voltage	12V/24V auto work
Rated battery current	10A	20A	30A	40A	50A	60A
Max. battery voltage	32V
Self-consumption	≤18mA
Communication	TTL232 / 8pin RJ45
Equalize Charging Voltage	Sealed: 14.6V;x2/24V Flooded: 14.8V;x2/24V
Boost Charging Voltage	Gel: 14.2V;x2/24V Sealed: 14.4V;x2/24V Flooded: 14.6V;x2/24V
Float Charging Voltage	13.8V;x2/24V
Low Voltage Reconnect Voltage	12.6V;x2/24V
Low Voltage Disconnect Voltage	11.1V;x2/24V
Temp. compensation	-30mV/℃/12V(25℃)
Relative humidity	10%~90% Non-condensation
Working temperature	-20℃ to +55℃
Enclosure	IP20

 

Electrical parameters	VS2048N	VS3048N	VS4048N	VS5048N	VS6048N
Normal system voltage	12V/24/48V auto work
Rated battery current	20A	30A	40A	50A	60A
Max. battery voltage	64V
Self-consumption	≤18mA
Communication	TTL232 / 8pin RJ45
Equalize Charging Voltage	Sealed: 14.6V;x2/24V  Flooded: 14.8V;x2/24V
Boost Charging Voltage	Gel: 14.2V;x2/24V Sealed: 14.4V;x2/24V  Flooded: 14.6V;x2/24V
Float Charging Voltage	13.8V;x2/24V
Low Voltage Reconnect Voltage	12.6V;x2/24V
Low Voltage Disconnect Voltage	11.1V;x2/24V
Temp. compensation	-30mV/℃/12V(25℃)
Relative humidity	10%~90% Non-condensation
Working temperature	-20℃ to +55℃
Enclosure	IP20

 

Battery Voltage Parameters (temperature at 25℃)
Battery charging setting	Gel	Sealed	Flooded
Equalize Charging Voltage	-	14.6V;x2/24V	14.8V;x2/24V
Boost Charging Voltage	14.2V;x2/24V	14.4V;x2/24V	14.6V;x2/24V
Float Charging Voltage	13.8V;x2/24V	13.8V;x2/24V	13.8V;x2/24V
Low Voltage Reconnect Voltage	12.6V;x2/24V	12.6V;x2/24V	12.6V;x2/24V
Low Voltage Disconnect Voltage	11.1V;x2/24V	11.1V;x2/24V	11.1V;x2/24V
Equalize Duration	-	2 hours	2 hours
Boost Duration	2 hours	2 hours	2 hours

Battery Charging Information

 

Bulk Charge

In this stage, the battery voltage has not yet reached boost voltage and 100% of available solar power is used to charge the battery. 12·Boost Charge When the battery has recharged to the Boost voltage setpoint, constant- current regulation 

is used to prevent heating and excessive battery gassing. The Boost stage remains 120 minutes and then goes to Float Charge. Every time when the controller is powered on, if it detects neither over discharged nor overvoltage, the charging will enter into boost charging stage.

·Float Charge

After the battery is fully charged in Boost voltage stage, the controller reduces the battery voltage to Float voltage set point. When the battery is fully recharged, there  will be no more chemical reactions and all the charge current transmits into heat and gas at this time. 

Then  the controller  reduces the voltage to  the floating stage, charging with  a smaller voltage and current. It will reduce the temperature of battery and prevent the gassing, also charging the battery slightly at the same time. The purpose of Float stage is to offset the power consumption caused by self consumption and small loads in the whole system, while maintaining full battery storage capacity. 

In Float stage, loads can continue to draw power from the battery. In the event that the system load(s) exceed the solar charge current, the controller will no longer be able to maintain the battery at the Float setpoint. Should the battery  voltage remains below the boost reconnect charging voltage, the controller will exit Float stage and return to Bulk charge.

·Equalize Charge