12amps SunKeeper PWM Solar Charge Controller

Morningstar’s SunKeeper solar controller provides a low-cost regulated output directly from the solar module to maximize battery life in small solar power applications. The SunKeeper is epoxy encapsulated and rated for outdoor use. By mounting directly to the module junction box and wiring through the junction box knockout, the connection is weather-proof. This eliminates the need for additional housing for the controller.

The SunKeeper is available in a 6 amp or 12 amp version (both at 12 volts DC). To withstand the high temperatures at the solar module, the controller has been designed using extremely efficient power electronics and is rated to 70°C. The SunKeeper is also certified for use in Class 1, Division 2 hazardous locations, making it an ideal controller for solar-powered oil/gas applications.

Key Features and Benefits:

High Reliability
Rated to 70°C to operate in high temperatures at the solar module. More reliable than controllers mounted inside the junction box. Uses very low on-resistance power MOSFET’s. No need to re-rate.

Outdoor Rated
ETL approved for outdoor use without an additional enclosure. Rugged IP65, UV resistant case. Epoxy-encapsulated printed circuit board and watertight connection to the module junction box.

Extensive Electronic Protections
Fully protected against reverse polarity, short circuit, overcurrent, lightning and transient surges, high temperature and reverse current at night.

Longer Battery Life
Series PWM with 3 stage charging: bulk, PWM regulation and float. Includes temperature compensation at the controller or alternatively at the battery when using an optional remote temperature sensor. Able to charge a zero voltage battery.

Rated for Hazardous Locations
Specifically designed for solar power systems in the oil/gas industry. Approved for use in Class 1, Division 2, Groups A,B,C,D.

More Information
Bi-color LED is easy to read from the ground when the solar module is pole-mounted. Indicates solar charging, regulation, normal nighttime operation, and any controller or system faults.

Easy to Install
Fits standard half-inch conduit knockout (PG 13.5, M20) in a module junction box. Quickly fastens with an included locknut. Wires have fork connectors for easy connection to solar module terminals.

TECHNICAL SPECIFICATIONS
Electrical Specifications
Rated Solar Input: SK-6	6 amps
SK-12	12 amps
Nominal System Voltage	12 Volts
Min. Battery Voltage	0 Volts
Max. Solar Voltage	30 Volts
Self-Consumption	Charging...7 mA Night ........2 mA
Voltage Accuracy	± 150 mV
Battery Charging
Regulation Voltage	14.1 Volts (at 25°C)
Float Voltage	13.7 Volts (at 25°C)
Type of Charging	Series PWM 3 stage: bulk, PWM and float
Temperature Compensation	(3 choices)
Reading temp at controller	–30 mV / °C
Attaching remote temp sensor	–30 mV / °C
Disable temp comp	Defaults to 25°C
Ability to Charge a Zero Voltage Battery
Electronic Protections
• Reverse Polarity	• Lightning and Transient Surges
• Short Circuit	• High Temperature
• Overcurrent	• Reverse Current at Night
Environmental Specifications
Operating Temperatures	– 40°C to +70°C
Humidity	100%
Tropicalization	Encapsulated in epoxy UV resistant plastic enclosure Conduit connection with rubber gasket sea
Mechanical Specifications
Dimensions	99 x 51 x 13 mm (3.9 x 2.0 x 0.5 inches)
Weight	0.11 kg / 0.25 lbs
Enclosure	IP65
Fitting to Module J-box	PG 13.5, M20, 1/2 inch conduit
Wire Size	2.0 mm2 (#14 AWG)
Wire Terminations	#8 fork connectors
Bi-color LED
Green Blink 3 Times	Successful installation
Green On Solar	Solar charging battery
Green Blink	Fast In regulation
Green Blink Slow	Normal nighttime operation
Red On	Controller damaged
Red Blink	System problem
LED Off	No power
Options
Remote Temperature Sensor (RTS)
Certifications
CE Compliant	Successful installation
Hazardous Locations:	Class 1, Division 2, Groups A-D, UL 1604 CSA 22.2 No. 213-M1987
Complies with U.S. National Electric Code
Manufactured in a Certified ISO 9001 Facility