CirKits.com LVD1 Features and Specifications

• Features
  • Designed for automatic control of 12V solar-powered DC systems.
  • Three modes: Off, Auto-On and Manual-On.
  • Adjustable shut-off and turn-on voltages.
  • Adjustable low-voltage warning voltage with hysteresis action.
  • Operates from 12V solar power systems, DC power supplies and automotive power systems.
  • Common Negative Ground between 12V power source and external load.
  • Designed to work with the CirKits SCC3 solar charge controller kit.
  • Reliable and efficient solid-state circuitry.
  • Built-in fuse for short circuit protection.
  • Radio quiet, will not interfere with sensitive radio receivers.
  • Four screw power/load connector will accept spade lugs or wires.
  • Miniature three screw connector for remote low-voltage warning.
  • Low-voltage warning is isolated, can pull-down or pull-up.

• Controls and Indicators
  • On/Off toggle switch.
  • Auto-On/Manual-on toggle switch with momentary action for Manual-on.
  • Red Load-on LED and amber Low-Voltage LED.
  • Built-in green Calibration LEDs.
  • Jumper for disabling Calibration LEDs to save power.
  • Low Voltage Shutoff adjustment trimmer RV1, range: 8.4V-11.9V.
  • Low Voltage Warning adjustment trimmer RV2, range: 9.2V-12.5V.
  • High Voltage Turn-on adjustment trimmer RV3, range: 10.0V-14.1V.

• Specifications
  • Battery Voltage: 12V (nominal).
  • Battery Voltage Range: 9V to 16V.
  • Absolute Maximum Operating Voltage: 18V.
  • External Load Voltage: 12V DC (nominal).
  • External Load Current: 0 to 15 Amps DC.
  • On Current, excluding load: 25mA @12.8VDC.
  • On Current, low voltage LED on: 27mA @10.0VDC.
  • Off Current: 12mA @10.0VDC.
  • Voltage drop with 2A load: 0.06V
  • Voltage drop with 15A load: 0.5V
  • Low Voltage Detect Hysteresis: 0.25V with R7=2M.
  • Fuse Rating: 15 Amp standard ATO automotive fuse.
  • Board Dimensions: 3.5" wide by 2.9" deep by 0.85" tall.
  • Board Mounts: 4X 4-40 screws on 1/4" spacers.
  • Assembled Weight: approximately 66 grams (2.3oz).