Solar charge controller 12V-24V / 20A PWM

These solar controllers are ideal for small and medium installations, they can be used for controlled charging of liquid electrolyte or gel batteries. The voltage at which these types of controllers operate can vary. The controller can operate at 12 or 24 V. The voltage at which the system will operate will be automatically selected by the controller itself.

Main features:

• Capacity: 20 amperes.
• Voltage: 12v or 24V
• This controller can accommodate up to 240 watts of solar panels (in a 24V system)
• Temperature compensation
• 2-year warranty.
• Technology: PWM.
• Fully programmable if used with its display

The theoretical charging of a lead-acid battery is carried out in 3 phases:

• Phase 1: The current is limited to a rate of about 1/5 of the nominal capacity. The voltage gradually increases until it reaches its maximum threshold regulated at 2.35V/cell.

• Phase 2: The charging voltage is regulated at 2.35V/cell, the charging current then decreases until it becomes less than C/100. The battery is charged at the end of this phase

• Phase 3: Once the battery is charged, it switches to maintenance charge mode (Floating) to keep it at 100% charge. The voltage then applied to the battery will be around 2.26V/cell

Applications
• Residential solar system
• Solar lighting system
• Solar monitoring system
• Solar system for boats
• Small solar power plant

Features
• Automatic system voltage configuration: 12V/24V
• High-efficiency PWM charging with temperature compensation
• 2 LEDs indicating charge status and battery status
• External temperature probe interface
• RS-485 communication bus
• Optional external display for precise device control
• Software update function

Electronic protections
• PV short circuit
• Overload
• Load short circuit
• PV polarity reversal
• Discharge
• Battery polarity reversal
• Overheating

Technical Data
Nominal system voltage 12/24VDC
Nominal battery current 20A
Maximum PV input voltage 50V
Self-consumption 8.4mA(12V), 7.8mA(24V)
Temperature compensation -3mV/℃/2V (25℃ ref)
Charge equalization voltage Sealed: 14.6V, Open: 14.8V, User: 9~17V
Boost charge voltage Gel: 14.2V, Sealed: 14.6V, Open: 14.8V, User: 9~17V
Floating charge voltage Gel/Sealed/Open: 13.8V, User: 9~17V
Reconnection voltage Gel/Sealed/Open: 12.6V, User: 9~17V
Disconnection voltage Gel/Sealed/Open: 11.1V, User: 9~17V
Dimensions 159.6x81.4x47.8mm
Mounting holes 147x50mm
Terminal 10mm2
Weight 0.3kg
Operating temperature -35℃~+55℃
Storage temperature -35℃~+80℃
Humidity ≤95% (NC)
Standard IP30

2-year warranty

15671