ACR Operation

October, 12 2011
ACR OPEN - Batteries are Isolated
ACR COMBINED - Batteries are connected and both charging.
  1. ACR relay is open and batteries are isolated. Voltage begins to rise slowly after engine starts or battery charger is turned on.
  2. When voltage rises to COMBINE voltage set on ACR 13.5V in this example, ACR relay closes, connecting and charging both batteries.
  3. When engine stops or battery charger is turned off, voltage rapidly begins falling.
  4. When voltage falls to 6% less than COMBINE voltage 13.5V less 6% = 12.7V in this example, ACR relay opens, isolating batteries, after 1 minute.
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