Epsolar ViewStar Series, User Manual, Page: 4 / 28

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1. General Information
1.1 Overview
ViewStar series solar charge 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.
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:
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12/24VDC &automatically identifying system voltage
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3-Stage intelligent PWM charging:Bulk, Boost/Equalize, Float
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Support 4 charging options: Sealed, Gel, Flooded and user
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Lithium battery self-activating function
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Battery temperature compensation function
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Actual power display and record function
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New SOC method calculate the battery capacity accurately
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Wide feasibility and recognize day or night automatically
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Several load control methods
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Hundred percent full load operation in working environment temperature range within charging &
discharging
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Extensive electronic protections
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Graphical dot-matrix LCD and 4 buttons combinations as HMI (human-machine interface) for full
menu and easy operation
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RS-485 ports via the open standard Modbus protocol are supported for long-distance
communication and communication compatibility
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Monitoring and setting parameter via Mobile APP, PC Monitor setting software