Honeywell Thor VM3 Manual page 119

Ignition Control/Ignition On Behavior
When either Ignition Control power scheme/plan is selected and external power is present the Thor VM3 behaves
as described below. If external power is not present, refer to the
Thor VM3 is Off and Vehicle Ignition is Switched to On
Conditions
The Thor VM3 is Off and vehicle ignition changes from Off to On.
Result
The Thor VM3 boots. Once booted the Thor VM3 follows the Ignition Control/Ignition On power
scheme/plan with timers reset after the boot completes.
Thor VM3 is On and Vehicle Ignition is Switched to On
Conditions
The Thor VM3 is On and vehicle ignition changes from Off (or not present) to On.
Result
The Thor VM3 continues to run and follows the Ignition Control/Ignition On power scheme/plan with
timers reset at the time Ignition switched to Active.
An example of this case would be a Thor VM3 that is running on UPS and is then mounted on a dock that
has truck power and the ignition switch is already On.
UPS (page 5-26) section for Thor VM3 behavior.
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