Morningstar’s SunSaver Duo™ is an advanced PWM twobattery controller for RV’s, caravans, boats and cottages. This product will charge two separate and isolated batteries at the same time, such as a “house” and an engine battery, based on user selectable priorities. The SunSaver Duo employs Morningstar’s legendary SunSaver controller technology, whose long-term track record for high reliability and improved battery charging is well-recognized in the solar industry.
This controller also includes a backlit remote meter which may be mounted in or on a wall, and displays digital and pictorial status information about the solar power system. The SunSaver Duo is epoxy encapsulated for environmental protection, is user adjustable via DIP switch or connection to a personal computer, and has an optional remote temperature sensor.
“Love it…it was worth the extra money over other brands that seemed to be of lesser quality”
They’re worth it, because they provide the faster power “tracking” that lets us engineer this much power and control into a compact design.
Combined with premium, “over-spec’d” components, this greatly improves control response which guards against system transients, regulation overshoot and overcurrent/overload conditions
Nature do your worst–this controller can take it
If you’ve ever trashed a lesser terminal during an installation, you’ll appreciate some “overkill” here
Allows the surface-mounting of critical components underneath the main board next to the heat sink, which reduces heat travel distance and keeps the controller even cooler
As opposed to cast aluminum, which is less effective in passive cooling applications
“Talks solar” with standard industry language, for system monitoring and cloud connectivity-speaks Modbus, and SNMP (with the EMC-1)
Lithium batteries are expensive and vulnerable to cold temperatures. When it gets close to freezing, the controller backs-off charging to avoid damaging batteries
All-digital calibration for high accuracy, using the same efficient technology found in advanced mobile device
Morningstar’s hallmark MPPT technology precisely seeks and locks onto the true maximum power point quickly and accurately, to ensure the highest output possible from a solar array
When you’ve been in the field installing, you appreciated being able to read a crisp, high contrast display on site
Up to 2 1/2 times longer than some competitors in this class
ProStar is smart enough to monitor and analyze system performance, and alert you when you need to know
Heat is the enemy of all electronics. That’s why Prostar’s critical components are rated to withstand temperatures right up to the boiling point of water (100°C)
Protects the precision electronics inside with an impact strength 30 times greater than the acrylic thermoplastics commonly found on lesser controllers
Just kidding. We’ve never needed them
|*Input power can exceed Nominal Operating Power. Controller will limit and provide its rated continuous maximum output current into batteries.|
|Charge Rating||25 amps||25 amps|
|Max. PV Open Circuit Voltage (Voc)||30 volts||30 volts|
|Nominal Battery Voltage||12V||12V|
|Self Consumption||6 to 10 mA||6 to 15 mA|
|Battery Voltage Range||1-15V||1-15V|
|Operating Temperature Range||-40 C to +45C||-40 C to +45C|
|Warranty||5 Years||5 Years|
|Remote Meter included|
|CE and RoHS compliant||Yes||Yes|
|Manufactured in a Certified ISO 9001 Facility||Yes||Yes|
This 5 minute video highlights the ProStar MPPT solar charge controller’s circuit board that differentiates it from other brands. In addition to the capacitors, inductors, processors, surge protectors, and other over-spec’d internal components, the quality of the controller’s heat sink and outer casing is also addressed. The video concludes with mention of features and capabilities related to communications, datalogging, lithium battery charging, and high quality and reliability.
provides a simple way to install controllers to DIN rails
converts RS-232 to EIA-485 so up to 128 MS products can communicate on the same bus
enables IP-based networking and internet connectivity for select Morningstar products
prevents current from following any unintended paths during a ground fault
converts a controller's RJ-11 meter port to a RS-232 serial connector for connection to a PC
provides voltage, current and temperature readings up to 10 meters away from system
programs conditional generator start/stop, high/low voltage alarms, load control and more
recommended when temperature at the battery and controller differs more than 5°C
It’s a recommended best practice to install your product’s latest firmware to ensure access to all up-to-date features, accessory compatibilities, and code modifications. Watch this 5 minute video for instructions on how to download and update ProStar MPPT firmware.
After watching the video, click here to download the firmware.
The schematic diagram above, illustrates how the ProStar MPPT regulates power to batteries and a direct current (DC) load in an off-grid system.
The schematic diagram above, illustrates how the ProStar MPPT regulates power to batteries and an alternating current (AC) load in an off-grid system. This diagram is very similar to the DC load diagram above it except an inverter has been added.