POWERTECH MP3752 12V/24V 20A Solar Controller User Manual

1. Kupu Whakataki

The POWERTECH MP3752 is an intelligent and lightweight solar charge controller designed to manage the power flow from your solar panels to your battery bank. Utilizing Pulse Width Modulation (PWM) technology, it ensures efficient and safe battery charging. This controller offers a set-and-forget operation, providing maximum charge into your batteries without constant monitoring. It integrates essential safety features such as overload, short-circuit, over-discharge, and reverse-polarity protection. Additionally, a convenient USB port on the front panel allows for up to 1.2A charging, useful for mobile devices during power outages. The unit supports various battery types including sealed lead-acid, Gel, and flooded cells, and automatically selects the optimal charging mode (bulk, equalise, float).

2. Nga korero haumaru

Please read all instructions carefully before installation and operation. Failure to follow these instructions may result in damage to the unit, battery, or personal injury.

• Me whakarite kia tika, kia mau hoki ngā hononga katoa i mua i te whakamahi i te hiko.
• Do not connect the solar controller to an AC power source.
• Tāutahia te pūmana ki tētahi wāhi whai hā pai, kei tawhiti atu i ngā rawa muramura me te rā tika.
• Avoid short-circuiting the battery terminals or solar panel terminals.
• Me hono tonu te pākahiko i te tuatahi, kātahi te panera rā, ā, ko te kawenga i te mutunga. Momotuhia i te raupapa whakamuri.
• This device is not waterproof; protect it from moisture and water.
• Ko nga kaimahi whai tohu anake me mahi i te whakaurunga me te tiaki.

3. Nga Hua o te Hua

• Automatic charge mode selection (Bulk, Equalise, Float).
• Suitable for both 12V and 24V battery banks.
• Integrated USB charging port (5V, 1.2A max) on the front panel.
• Supports sealed lead-acid, Gel, and flooded battery types.
• Comprehensive protection features: overload, short-circuit, over-discharge, reverse-polarity.
• Pulse Width Modulation (PWM) charging technology.

4. Ihirangi mokete

Tirohia ngā ihirangi o te kete ina tae mai:

• 1 x POWERTECH MP3752 Solar Controller
• 1 x Manual Kaiwhakamahi (tenei tuhinga)

5. Hua Neke Atuview me nga Hononga

Whakaahua 1: Mua view of the POWERTECH MP3752 Solar Controller. This image displays the PV LOAD, UVW, LVD, Load ON, Over Load, Short-Circuit indicators, the USB port, and the connection terminals for solar panels, battery, and load.

The MP3752 controller features clearly marked terminals for easy connection. Refer to Figure 1 for a visual guide to the controller's layout and indicators.

Nga Kapeka Hononga:

• Solar Panel Input (PV): Connect your solar panel array here. Ensure correct polarity (+ and -).
• Hononga Pūhiko: Connect your 12V or 24V battery bank here. Observe correct polarity (+ and -).
• Utaina Putanga: Connect your DC loads (e.g., lights, fans) here. Observe correct polarity (+ and -).
• Tauranga USB: 5V, 1.2A max output for charging small electronic devices.

6. Tatūnga me te Tāuta

Whāia ēnei mahi hei tāuta tika i tō pūmana whakahaere utu rā:

1. Whakapiki: Choose a dry, well-ventilated indoor location, away from direct sunlight, high temperatures, and moisture. Ensure sufficient air circulation around the controller.
2. Hononga Pūhiko:
   • Connect the positive (+) terminal of the battery to the battery positive (+) terminal on the controller.
   • Connect the negative (-) terminal of the battery to the battery negative (-) terminal on the controller.
   • The controller will automatically detect if it's a 12V or 24V system.
3. Hononga Paewhiri Solar:
   • Connect the positive (+) terminal of the solar panel to the solar panel positive (+) terminal on the controller.
   • Connect the negative (-) terminal of the solar panel to the solar panel negative (-) terminal on the controller.
   • Ensure the open-circuit voltage of the solar panel does not exceed the maximum input voltage of the controller (typically 50V for 12/24V systems).
4. Uta Hononga:
   • Connect the positive (+) terminal of your DC load to the load positive (+) terminal on the controller.
   • Connect the negative (-) terminal of your DC load to the load negative (-) terminal on the controller.
   • Do not exceed the maximum rated current for the load output (20A).
5. Manatoko Hononga: Double-check all connections for correct polarity and tightness before proceeding.

Figure 2: The POWERTECH MP3752 Solar Controller shown in its packaging, illustrating its application with solar panels. This image provides a contextual view of the product's intended use.

7. Nga Tohutohu Whakahaere

7.1. Automatic System Voltage Whakaaetanga

The controller automatically detects whether the connected battery bank is 12V or 24V upon initial connection. Ensure the battery is connected first for proper voltage kitenga.

7.2. Tikanga Aratau

The MP3752 employs intelligent PWM charging, automatically cycling through different stages to optimize battery health and lifespan:

• Akona Ake: Delivers maximum current to rapidly bring the battery to approximately 80% charge.
• Equalise Charge: Periodically applies a higher voltage to equalize the charge among battery cells, preventing sulfation and extending battery life (for flooded batteries).
• Ake Whakatika: Ka pupuri i te pākahiko kia kī tonu mā te whakarato i te iti, te pumau o te hikotage, compensating for self-discharge.

7.3. Load Control

The load output is controlled by the controller to prevent over-discharge of the battery. When the battery voltagka taka ki raro i te Vol Lowtage Disconnect (LVD) threshold, the load output will be automatically disconnected. It will reconnect once the battery has recharged to the Low Voltage Reconnect (LVR) threshold.

Press the power button on the controller to manually turn the load output ON or OFF.

7.4. Tauranga Whakapaa USB

The 5V, 1.2A USB port can be used to charge small electronic devices like smartphones or tablets. This port is active as long as the battery has sufficient charge.

8. Tohutohu

The POWERTECH MP3752 features several LED indicators to provide real-time status information:

• PV LOAD (Solar Panel Indicator):
  • Kākāriki: Solar panel is connected and generating power.
  • Weto: No solar input or insufficient light.
• Tohu Whakatau:
  • Kākāriki: Kei te utu te pākahiko.
  • Weto: Battery is fully charged or not charging.
• Whakawhanatage Tohu:
  • Whero: Whakauru voltage from solar panel is too high, or battery voltage is overcharge protection level.
• UVW (Battery Voltage Indicator): Multiple LEDs indicating battery charge level.
• LVD (Wairangi Ititage Disconnect Indicator):
  • Whero: Pūhiko voltage is low, load output has been disconnected.
• Load ON Indicator:
  • Kākāriki: Load output is active.
• Over Load Indicator:
  • Whero: Load current exceeds the maximum rated current. Load output may be temporarily disconnected.
• Short-Circuit Indicator:
  • Whero: Short-circuit detected on the load output. Load output will be disconnected.

9. Tiaki

To ensure optimal performance and longevity of your solar charge controller, regular maintenance is recommended:

• Te horoi: Periodically clean the exterior of the controller with a dry, soft cloth. Do not use solvents or abrasive cleaners.
• Hononga: Annually check all wiring connections for tightness and corrosion. Loose connections can cause overheating and poor performance.
• Whakahau: Ensure that the ventilation openings are not blocked and that there is adequate airflow around the unit.
• Tirotiro: Tirotirohia te kaiwhakahaere mo nga tohu o te kino o te tinana, te paheketanga, te kakara rereke ranei.

10. Te Raru

11. Whakatakotoranga

12. Pūtāhui me te Tautoko

This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. Please refer to your purchase documentation for specific warranty terms and duration. For technical support, troubleshooting assistance, or warranty claims, please contact your retailer or the manufacturer directly.

Note: Unauthorized disassembly or modification of the product will void the warranty.