SMPPT Installation & Operation Manual Version 1.0
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1. Safety Instructions
(1) The controller is only designed to be connected to the off-grid solar
system. It offers the management of charging and discharging for the
lead-acid battery of flooded, gel and AGM chemistries from 12V to 24V
nominal only. Do not connect this controller to other system, such as
mains supply and windmill generator.
(2) The controller is intended for indoor use only. Protect it from direct
sunlight and place it in a dry environment.
(3) Batteries generate explosive gases during normal operation. It is
important never allow a spark or flame in vicinity of battery.
(4) Be sure to always keep children away from batteries and acid!
(5) Do not disassemble the MPPT controller, it does not have any
user-serviceable parts.
(6) The controller warms up during normal operation. Do not touch the
heatsink at the bottom of the controller.
Note
:
It is important that the battery is fully charged frequently (at least
monthly). Otherwise the battery will be permanently damaged.
2. MPPT Controller Instructions
2.1 Overview
SMPPT solar charge controller is multi-stage Maximum Power Point
Tracking (MPPT) photovoltaic battery charge controller with our own
technology. It’s main topology adopts in Buck conversion circuit, and uses
MCU to adjust the solar panels working point intelligently in order to make the
solar panels output its maximum power. When the circumstances change, the
working point of solar panels deviate from the maximum power point, MCU will
adjust the solar panels working point based on MPPT calculation to make the
solar panels back to the maximum power point again(refer to Chapter 2.4
about MPPT technology introduction). Compared with PWM controller, MPPT
controller can increase the output power of solar panels by 5%~30%. The
output power increasing proportion is affected by the factors such as solar
panels property, humidity and light intensity. The controller uses wall-mount
installing (refer to Chapter 4.1). Connecting terminal makes the wiring area
bigger and wiring loss less.
