How to adjust solar controller
With the popularity of green energy, solar controllers are the core components of photovoltaic systems, and their adjustment methods have attracted much attention. This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with a detailed analysis of the adjustment steps and precautions of solar controllers, and provide structured data reference.
1. Basic functions of solar controller
Solar controllers are mainly used to manage the charging process of photovoltaic panels to batteries to prevent overcharge or overdischarge. The following is a comparison of its core functions:
| Function type | Description | Applicable scenarios |
|---|---|---|
| PWM control | Pulse width modulation, lower cost | small home system |
| MPPT control | Maximum power point tracking, high efficiency | Commercial or large-scale systems |
2. Detailed explanation of adjustment steps
1.Voltage parameter settings: Adjust the charging voltage threshold according to the battery type. Common battery parameters are as follows:
| Battery type | Float charge voltage (V) | Balance voltage (V) |
|---|---|---|
| Lead acid battery | 13.6-13.8 | 14.4-14.6 |
| Lithium battery | 13.8-14.0 | 14.2-14.4 |
2.Load control settings:
• Timing mode: can be set to shut down the load at night
• Light control mode: automatically start and stop according to light intensity
• Manual mode: direct control via buttons
3.System protection settings:
| protection type | Recommended threshold |
|---|---|
| Over discharge protection | 80% of battery voltage |
| Overcurrent protection | 120% of rated current |
3. Summary of recent hot issues
Based on the hot discussions on the Internet in the past 10 days, we have sorted out the three major issues that users are most concerned about:
| Ranking | question | solution |
|---|---|---|
| 1 | MPPT controller efficiency decreases | Check the shading of photovoltaic panels |
| 2 | Controller displays exception code | Reference manual error code table |
| 3 | Charging efficiency is low in winter | Adjust tilt angle and remove snow |
4. Precautions for adjustment
1. Be sure to disconnect the photovoltaic panel input before operation
2. The menu structures of different brands of controllers are quite different.
3. The settings need to be saved after modifying the parameters.
4. Regularly check whether the terminals are loose
5. Maintenance suggestions
• Clean the cooling vents of the controller monthly
• Check voltage calibration quarterly
• Annual comprehensive testing of system efficiency
• Update the controller firmware version in a timely manner
Through the above structured guidance, users can quickly master the adjustment methods of solar controllers. Please strictly follow the equipment instructions during actual operation. If you encounter complex problems, it is recommended to contact professional technicians.
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