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Summary of Contents for PowerTech MP3743
- Page 1 12V/24V 30A MPPT Solar Charge Controller for Lithium or SLA Batteries MP3743 User Manual...
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Page 2: Table Of Contents
Contents I. Matters needing attention II. Product picture 4, 5 III. Description of basic functions 5, 6 III. Description of LCD screen 7, 8 IV. Operation of machine buttons and function introduction 8, 9 V. Wire diameter requirements VI. Electrical parameters VII. -
Page 3: Matters Needing Attention
I. Matters needing attention Keep the product out of reach of children to avoid using it as a toy and causing personal injury. Note! Only use the accessories approved by the company or fully comply with the requirements of the company for the specifications of the accessories, or else it may cause danger. Operating voltage range of the charger: 12/24V battery; it will damage the internal discharge circuit if the voltage exceeds 33V, so do not use batteries over 36V, or else it may damage the charger. The maximum open circuit voltage of PV is 100V. Do not exceed the range during use, or else the charger may be damaged. Do not touch the heat sink in the process of product operation to avoid hot hands. It is recommended to use the product on the wall. ... -
Page 4: Product Picture
Product picture (Fig. 1) II. Functional description of each part of the panel (refer to Fig. 1 & 2): 1. UP (up button) 2. Down (down button) 3. MENU (main menu button) 4. Enter (OK button) 5. Green LED light (off when no charging, flashing during charging, stay on when fully charged). 6. Red LED light (off when no error , error alarm when the light is long on, lithium battery only has 12V gear, other gear flashing red light error) 7. 2*5V 3A USB output 8. LCD screen Remark: (The operations of panel items 1‐4 are explained below). ... -
Page 5: Description Of Basic Functions
(Fig. 2) 9. External temperature probe 10. RJ45 port, connected to the remote control board through the network cable and synchronized with the LCD screen (this port is reserved and the remote control board is optional) 11. PV+ (connected to the positive electrode of the solar panel) 12. - Page 6 Recover when load is reduced: resume normal charging( 30A) when the heat sink temperature is <70°C. Stop charging when the heat sink temperature is ≥90°C; resume charging when the heat sink temperature is <60°C. External temperature compensation function (only for AGM/STD battery) a.1.The system will automatically adjust the float voltage according to the ambient temperature.
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Page 7: Description Of Lcd Screen
III. Description of LCD screen: A B C D E F G H I J K L M N O P A. Sun icon, displayed when solar panel is connected. ... -
Page 8: Operation Of Machine Buttons And Function Introduction
minutes. PV < 5V display night icon immediately . P. Numerical display (8888 characters). The current data of the machine can be switched by the MODE bu on, such as ba ery voltage / load voltage / PV voltage / me. IV. -
Page 9: Wire Diameter Requirements
set to 4 hours by default); c. After clock 2 executing, the load is always on until PV>10.5V, so the loop is repeated) (8. TO mode: Set the load timer on/off time; the setting range is 0-24 hours. a. for example, the default setting: turn on load at 18:00, turn off load at 6:00. The program automatically turns on/off... -
Page 10: Electrical Parameters
VI. Electrical Parameters: PV input Parameters PV maximum open circuit voltage (VDC) 100V MPPT voltage (VDC) 16~80V Maximum PV input power (W) 12V battery≦450W; 24 battery≦900W; Maximum MPPT current ≤30A DC output Battery voltage (VDC) 12//24V Battery capacity (AH) ≧30AH Output current (A) 30A Max Constant voltage charging voltage... -
Page 11: Troubleshooting
VII. Fault Codes reverse connec (please correct) open circuit prot ry not connected / or voltage <8V/18V) overcurrent prot on (circuit has constant current the machine may be damaged if there is an error) Load overcurrent /short circuit protec (error 10S, turn on the load elimina g the error)
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