1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your HQST 20A PWM Solar Charge Controller. This device is designed to manage the power flow from your solar panel to your battery, ensuring efficient charging and protecting your battery from overcharge and over-discharge. It is compatible with 12V and 24V PV systems and various lead-acid battery types.
2. caractéristiques du produit
- Contrôleur de charge solaire 20A : Automatically detects 12V or 24V PV systems.
- Compatibilité de la batterie : Works with Sealed, and Flooded lead-acid batteries.
- Charge optimisée : Features an optimized 3-stage battery charging system to regulate electricity flow and prolong battery lifespan.
- Écran LCD précis : Large digital LCD display clearly indicates working conditions and accurate operating data for real-time PV system monitoring.
- Protection complète : Provides reverse polarity protection, block reverse current at night, short circuit, overcharge, over-discharge, and overload protection for solar panel and battery.
- Installation facile : Designed with corresponding icons on each connector for quick setup.
- Port USB-A : Includes a USB-A port for charging mobile devices or powering small loads.
- Applications multiples : Suitable for RVs, cabins, workshops, garages, and other off-grid lighting or power needs.
3. Produit terminéview
Familiarize yourself with the components of your HQST Solar Charge Controller.
Figure 3.1 : Devant view of the HQST Solar Charge Controller with key components labeled, including mounting holes, LCD screen, control keys, solar panel terminals, battery terminals, load terminals, and USB port.
Figure 3.2 : Détaillé view of the LCD display, showing indicators for PV (solar panel), BAT (battery), LOAD, parameter digits, and units (kWh, %, V, °C). It also illustrates the power flow from solar panel to battery to load.
4. Spécifications
| Fonctionnalité | Spécification |
|---|---|
| Modèle | 20A MLI |
| Vol systèmetage | 12V / 24V Auto |
| Courant de charge maximal | 20A |
| Compatibilité des types de batterie | Sealed, Flooded Lead-Acid Batteries |
| Type d'affichage | Écran LCD |
| Sortie USB | 5V/1A (USB-A Port) |
| Dimensions du produit | 5.12 x 1.38 x 2.95 pouces (13 x 3.5 x 7.5 cm) |
| Poids de l'article | 4.9 onces (0.14 kg) |
| Fabricant | TVQ |
| Code UPC | 791810331544 810081407366 |
Figure 4.1 : Physical dimensions of the HQST Solar Charge Controller, showing length (6.45 in), width (4.07 in), and height (1.85 in).
Figure 4.2 : Illustration of battery types compatible with the HQST Solar Charge Controller, including Sealed, Gel, Flooded, and Lead-Acid batteries.
5. Consignes de sécurité
- Assurez-vous que toutes les connexions sont bien serrées et sécurisées afin d'éviter les connexions desserrées pouvant entraîner une surchauffe.
- Branchez toujours d'abord la batterie au régulateur de charge, puis le panneau solaire, et enfin la charge. Débranchez-les dans l'ordre inverse.
- Do not connect an inverter directly to the load terminals of the charge controller. Connect inverters directly to the battery.
- Installez le contrôleur dans un endroit bien ventilé, à l'abri de la lumière directe du soleil, des températures élevées et de l'humidité.
- Assurez-vous que le système voltage (12V or 24V) matches the battery bank voltage. The controller automatically detects this.
- Use appropriate wire gauges for all connections to prevent voltagchute et surchauffe.
- Portez des lunettes de protection lorsque vous manipulez des piles.
6. Installation (Configuration)
Suivez ces étapes pour installer correctement votre régulateur de charge solaire.
- Montage: Choose a dry, well-ventilated location for mounting the controller. Ensure there is sufficient space around the controller for heat dissipation. Use the mounting holes provided on the unit.
- Connectez la batterie : Connect the battery to the battery terminals on the charge controller. Ensure correct polarity (+ to + and - to -). The LCD display should illuminate, indicating the controller has detected the battery voltage.
- Connecter le panneau solaire : Connect the solar panel to the solar panel terminals on the charge controller. Ensure correct polarity. The controller will begin charging the battery if sunlight is available.
- Connectez la charge : Connect your DC loads (e.g., lights, fans) to the load terminals. Ensure correct polarity. The USB-A port can also be used for charging compatible devices.
Ordre de connexion important : Always connect the battery first, then the solar panel, and finally the load. Disconnect in the reverse order: load first, then solar panel, then battery.
Figure 6.1 : A typical wiring diagram showing the connection of a 12V solar panel, the HQST PWM charge controller, a 12V deep cycle battery, and a 12V power inverter. Note the recommended fuse placement and wire gauges.
Figure 6.2 : Visual step-by-step guide for connecting the HQST Solar Charge Controller: 1. Connect the battery. 2. Connect the solar panel. 3. Connect the load (light bulb). This sequence ensures safe and proper system setup.
7. Fonctionnement
Once installed, the controller operates automatically. The LCD display provides real-time information about your system.
7.1 Fonctions de l'écran LCD et des boutons
The LCD cycles through various parameters such as battery voltage, charging current, load current, and temperature. The single red button is used to manually cycle through display modes or to enter settings for load control (e.g., timer settings for lights).
- Appui court : Cycles through display parameters.
- Appui long (environ 5 secondes) : Enters or exits setting mode for load control.
7.2 Contrôle de charge
The controller offers programmable load control. You can set the load to turn on/off based on daylight or a timer. Refer to the specific settings menu on the LCD for detailed configuration. The USB-A port is typically powered when the load output is active.
Figure 7.1 : The HQST Solar Charge Controller featuring a USB-A port, which can be used to charge mobile devices or power small USB-compatible electronics.
8. Entretien
Un entretien régulier garantit des performances optimales et une longue durée de vie à votre régulateur de charge solaire.
- Inspecter les connexions : Periodically check all wiring connections for tightness and corrosion. Loose connections can lead to power loss and overheating.
- Nettoyer le contrôleur : Veillez à ce que la manette reste propre et exempte de poussière et de débris. Utilisez un chiffon sec pour la nettoyer. N'utilisez aucun liquide.
- Surveiller les performances : Regularly check the LCD display for normal operation and expected readings. Note any unusual behavior.
- État de la batterie : Ensure your batteries are properly maintained according to their manufacturer's guidelines.
9. Dépannage
Cette section aborde les problèmes courants que vous pourriez rencontrer avec votre régulateur de charge solaire.
| Problème | Cause possible | Solution |
|---|---|---|
| Manette ne s'allume pas / écran LCD vide | Battery not connected or reverse polarity; battery voltage trop bas. | Vérifiez les connexions et la polarité de la batterie. Assurez-vous que le volume de la batterie est correct.tage est supérieur au volume de fonctionnement minimaltage (généralement 8 V). |
| La batterie ne charge pas | Solar panel not connected or reverse polarity; insufficient sunlight; damaged solar panel or wiring. | Check solar panel connections and polarity. Ensure adequate sunlight. Inspect solar panel and wiring for damage. |
| Chargement impossible | Load not connected or reverse polarity; load current exceeds controller rating; battery voltage too low; load control setting. | Check load connections and polarity. Ensure load current is within 20A. Check battery voltage. Adjust load control settings if a timer or light sensor mode is active. |
| Codes d'erreur sur l'écran LCD | Specific system fault (e.g., overcharge, over-discharge, short circuit). | Refer to the controller's internal error code list (if available in a more detailed manual) or contact HQST support. Address the underlying issue (e.g., reduce load, check battery). |
10. Garantie et assistance
For warranty information or technical support, please refer to the official HQST webou contactez directement leur service client. Conservez votre reçu d'achat pour toute réclamation sous garantie.
HQST is committed to providing high-quality solar products and responsive customer service.
