1. Introduction
The MP-3722 PV Charge Controller is designed for use with all types of 12V photovoltaic(PV)
panels/systems and different types of 12V batteries, such as wet or sealed lead acid, lead
calcium, lead antimony battery.
Numerous features are provided to maximize the performance of the system:
●
Electronic Blocking ( To protect against reverse polarity connection of PV panel and block
current from battery to PV Panel when voltage of Battery is higher than PV panel),
●
Suitable for PV panels with Open Circuit Voltage from 17 to 23V,
●
Rated charging/load current 30A(MP-3722),
●
PWM Charging with 3-stage Charge Control (to allow battery be left unattended for long
period),
●
User Adjustable Charge Control Settings for different types of batteries,
●
User Adjustable Low Voltage Disconnect and Low Voltage Reconnect,
●
Build-In Microprocessor for PV charge control to maximize the charging efficiency,
●
Overcharge and Over-discharge Protection,
●
Over Temperature Protection,
●
Short-Circuit Protection at load terminal (5) & Battery Reverse Polarity Protection at Battery
Connection Terminal (6),
●
Informative LCD Display and Tri-Color LED indication of system and battery conditions,
●
Optional
Temperature Sensor for compensated battery charging,
●
Optional
Remote Signal Terminal.
2. Control and Indicator
The following diagram shows the hardware interface of the PV Charge Controller.
Figure 1 Front view of PV Charge Controller
1.
Battery LED Indicator
2.
LCD Display
3.
Reset button (see Section 3.4)
4.
Temperature Sensor (Optional )
5.
12V DC Load terminal with Low Voltage Disconnect/NIGHT-LIGHT mode (Section 4.3)
6.
12V Battery connection terminal
7.
PV Panel connection terminal
8.
Remote Signal Terminal (Optional )
9.
Side Door (open to access switches for setting)
P.2