Epsolar ViewStar MT-100, Instruction Manual, Page: 6 / 56

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2 General Information
Thank you for selecting ViewStar series 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. It has various unique functions and easy to use.
2.1 Product Overview
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.
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
High efficient Series PWM charging, increase the battery lifetime and improve the solar
system performance
Use MOSFET as electronic switch, without any mechanical switch
Widely used, automatically recognize day/night
Adopt graphics dot-matrix LCD screen and HMI (human-machine interface) with 4
buttons, integrated menu displaying and operation
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 and improve the battery lifetime
Electronic protection: Overheating, over charging, over discharging, overload, and short circuit.
Reverse protection: any combination of solar module and battery