Description

Morningstar’s SunLight 20. A 20A solar lighting controller combining the SunSaver design with an advanced microcontroller for automatic lighting control functions. Choose from 12V or 24V battery voltage.

SunLight 20 Key Features and Benefits

• Microcontroller digital accuracy
• Fully automatic operation
• Ten field adjustable lighting control options
• Special on/off/on lighting functions
• Manual test capability
• LVD override protection
• Detects day and night using the PV array
• Sealed/Flooded battery select
• Temperature compensation
• Parallel with a SunSaver for 40 amps solar
• Includes SunSaver battery charging circuit

SunLight 20 Operation:

• Rotary digital switch to select among 10 lighting options (see back)
• Test button flashes red LED to confirm correct rotary switch selection
• Test button turns lights on for 5 minutes (in LVD limited to 3 times)
• LVD overrides lighting timer
• Sunrise overrides lighting timer
• Timer accuracy is within 2 seconds

SunLight 20 Lighting Control Options

• OFF
• 2 Hours ON after sunset
• 4 Hours ON after sunset
• 6 HOURS ON after sunset
• 8 HOURS ON after sunset
• 10 HOURS ON after sunset
• 3 Hours ON after sunset / OFF / 1 Hour ON before sunrise
• 4 Hours ON after sunset/ OFF / 2 Hour ON before sunrise
• 6 Hours ON after sunset/ OFF / 2 Hour ON before sunrise
• DUSK-to-DAWN

SunLight 20 Electrical Specifications…

• Rated Solar Input 20A
• Rated Load 20A
• 25% Current Overload 5 min.
• Regulation Voltage:
  • Sealed Battery 28.2V
  • Flooded Battery 28.8V
• Load Disconnect 23.4V
• LVD Reconnect 25.6V
• Temp. Comp. (mV/˚C) –27
• Self-consumption 9 mA
• Operating Temp. –40 to +85ºC

DOWNLOAD THE SPEC SHEET HERE