User Manual

2
2 General Information
Thank you for selecting ViewStar series solar charge controller. The controller adopts
advanced digital control technology, LCD display and automatical operation. With the
features of Pulse Width Modulation (PWM) battery charging and unique control
technology, the controller will improve the long battery life efficiently. Our controller has
many unique features and easy to use.
2.1 Product Overview
The controller could charge battery and discharge automatically for off-grid photovoltaic
(PV) systems. The charging process has been optimized for long battery life and
improved system performance. The comprehensive self-diagnostics and extensive
electronic protection can prevent damage against incorrect wiring or system faults.
Features:
32 bit MCU with high speed and high performance
12 bit A/D high-precision sampling to ensure accuracy
Excellent EMC design
Nominal system voltage automatic recognition or user-defined working voltage
High efficient Series mode PWM charging, increase the battery lifetime and improve the
solar system performance
Use MOSFET as electronic switch, without any mechanical switch
Wide feasibility and, recognize day or night automatically
Graphical dot-matrix LCD and 4 buttons combinations as HMI (human-machine
interface) for full menu and easy operation
Humanized design of browser interface to facilitate the operations
All of control parameters could be set and modified
Several load control methods are supported to convenient for different demand
Support 4 charging preprogram options: Sealed, Gel, Flooded and User-defined
Adopt temperature compensation and update charging and discharging parameters
automatically to improve the battery lifetime
With the feature of input filter, the voltage spike could be restrained effectively