IEI Technology TANK-720, User Manual

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TANK -720 E mbedded S ys tem
P age 46
3.11.2.2 S witch to B ackup P ower
During the operation, the system power will switch from Power 2 to Power 1 automatically
when the following situations occur:

Power 2 < 10.5V and Power 1 > 10V

Power 2 is unplugged and Power 1 > 10V
The following flow diagram shows how the power is switched between Power 2 and
Power 1 and their LED statuses.
Figure 3-41: ACC Off: Switch Between PWR1 and PWR2
3.11.2.3 S hutdown
The system will shutdown in the following situations:

Power 2 < 10.5V and Power 1 < 10V

Press Power button for 6 seconds
The following flow diagram shows the system shutdown process and the LED statuses.
Figure 3-42: ACC Off: Shutdown