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Manufacturer Part Number: PS-15Morningstar’s ProStar is the world’s leading mid-range solar controller for both professional and consumer applications. This second generation ProStar:    Adds new features and protections using highly advanced technology    Provides longer battery life and improved system performance    Sets new standards for reliability and self-diagnosticsFeaturesStandard    Versions available: 15 or 30 amp 12 / 24 or 48 volt negative or positive ground    Estimated 15 year life    PWM series battery charging (not shunt)    3-position battery select: gel, sealed or flooded    Very accurate control and measurement    Jumper to eliminate telecom noise    Parallel for up to 300 amps    Temperature compensation    Tropicalization: conformal coating, stainless steel fasteners & anodized aluminum heat sink    No switching or measurement in the grounded leg    100% solid state    Very low voltage drops    Current compensated low voltage

Morningstar ProStar 15 Amp 12/24 V PWM charge ctrl

  •   PS-15 PS-30 PS15M-48V
    Rated Solar Current 15 Amps 30 Amps 15 Amps
    Rated Load Current 15A 30A 15A
    System Voltage 12/24V 12/24V 48V
    Temp. Comp. (mV/°C)* – 30mV – 60mV – 120mV
    Accuracy 40mV 60mV 80mV
    Min. voltage to operate 8V 8V 15V
    Self-consumption 22mA 25mA 28mA
    LVD current coefficient** – 20mV – 40mV – 80mV
    Charge algorithm PWM, constant voltage
    Operating temperature – 40°C to + 60°C

    Detailed Description


    • Short-circuit — solar and load
    • Overload — solar and load
    • Reverse polarity
    • Reverse current at night
    • High voltage disconnect
    • High temperature disconnect
    • Lightning and transient surge protection
    • Loads protected from voltage spikes
    • Automatic recovery with all protections


    • Night Disconnect: The solar array automatically disconnects at night to prevent reverse current leakage from the battery.
    • Battery Sense: Good battery performance requires accurate charging. Voltage drops in the battery power cables can distort the battery charging. The Sense wires eliminate the voltage drops for optimized charging.
    • Temperature Compensation: Four control setpoints (25°C reference) are compensated for temperature (PWM regulation, float, equalization, high voltage disconnect). The charging is compensated by –5 mV/°C /cell (–30mV/°C for a 12V battery). Compensation is limited to minus 30°C.
    • Remote Temperature Probe: An optional probe is available to measure temperature at a location away from the controller. This requires soldering 2 wires to the ProStar PCB.