2 switch to backup power, 3 shutdown, Figure 3-38: acc on: switch between pwr1 and pwr2 – IEI Integration TANK-700-QM67 v1.00 User Manual
Page 55: Figure 3-39: acc on: shutdown
TANK-700 Embedded System
Page 44
3.11.1.2 Switch to Backup Power
During operation, system power will switch from Power 1 to Power 2 automatically when
the following situations occur:
Power 1 < 9V and Power 2 > 10.5V
Power 1 > 9V, but the ACC ON signal jumps from high to low
Power 1 is unplugged and Power 2 > 10.5V
The following flow diagram shows how the power is switched between Power 1 and
Power 2 and their LED statuses.
Figure 3-38: ACC On: Switch Between PWR1 and PWR2
3.11.1.3 Shutdown
The system will shutdown in the following situations:
Power 1 < 9V and Power 2 < 10.5V
Power 1 > 9V, Power 2 < 10.5V and ACC ON signal jumps from high to low
Press Power button for 6 seconds
The following flow diagram shows the system shutdown process and the LED statuses.
Figure 3-39: ACC On: Shutdown