SCL 3680 - Uncategorized H-Tronic - Free user manual and instructions
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| Product Type | Solar Charge Controller |
| Brand | H-Tronic |
| Model | SCL 3680 |
| Rated Voltage | 12V / 24V Auto Detection |
| Max Charging Current | 30A |
| Max Solar Input Power | 360W (12V) / 720W (24V) |
| Battery Compatibility | Lead-acid (GEL, AGM, Flooded), Lithium (optional) |
| Charging Algorithm | PWM (Pulse Width Modulation) |
| Display | LED indicators for charging status, battery level |
| Protections | Overload, short circuit, reverse polarity, overcharge, over-discharge |
| Operating Temperature | -20°C to +50°C |
| Dimensions (L x W x H) | 180 mm x 120 mm x 45 mm |
| Weight | Approx. 350 g |
| Mounting | Wall mount, DIN rail optional |
| Cable Size (Max) | 10 mm² for battery and solar |
| Self-consumption | < 15 mA |
| Compliance | CE, RoHS |
| Warranty | 2 years |
| Manual Languages | English, German, French, Dutch (sample) |
Frequently Asked Questions - SCL 3680 H-Tronic
What batteries are compatible with the H-Tronic SCL 3680?
The controller supports lead-acid batteries (GEL, AGM, flooded) with a voltage of 12V or 24V. For lithium, check if the model supports lithium profile; otherwise, use a separate BMS.
How do I connect the SCL 3680 to my solar panel and battery?
Connect the battery first, then the solar panel. Ensure correct polarity: battery positive to BAT+, negative to BAT-. Solar panel positive to SOL+, negative to SOL-. The load (optional) connects to LOAD+ and LOAD-.
Why is the charging current less than expected?
Check if the solar panel voltage is sufficient (at least 5V above battery voltage). In cloudy conditions, current drops. Also verify cable thickness and connections.
Can I use the SCL 3680 with a 12V or 24V system?
Yes, the controller automatically detects the system voltage (12V or 24V). For 24V, connect two 12V batteries in series.
What does the LED indicator mean when it blinks?
A blinking green LED indicates charging in progress; blinking red LED indicates a fault (e.g., overload, short circuit, or reverse polarity). Refer to the manual for specific patterns.
How to reset the controller?
Disconnect all connections (battery, solar, load), wait 5 minutes, then reconnect in order: battery first, then solar. The controller will reset.
Maximum solar panel power for the SCL 3680?
For 12V system, max 360W; for 24V system, max 720W. Exceeding can damage the controller.
Is the SCL 3680 suitable for RV or marine use?
Yes, as long as the operating temperature (-20°C to +50°C) and humidity are within limits. Ensure proper ventilation and mounting in a dry area.
Does the controller have a display?
No LCD display; it uses LED indicators for battery level and charging status. For detailed data, an external monitor or Bluetooth module may be required.
How to clean and maintain the SCL 3680?
Disconnect from power before cleaning. Use a dry cloth to remove dust. Avoid liquids. Check connections periodically for corrosion. No user-serviceable parts inside.
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USER MANUAL SCL 3680 H-Tronic
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Product information
Brand : H-Tronic
Model : SCL 3680
Category : Uncategorized