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8. FUNCTIONAL DESCRIPTION
(5) Power supply switching operation 2 (ON-ON switching)
Fig.8.4.4 shows an example of power supply switching operation 2 on connection / disconnection of power
supply with a higher priority level.
State C
Description of each state
State A: Input power not selected.
(OB1:OFF, OB2:OFF, OU1:OFF, OU2:OFF, OC1:OFF, OC2:OFF)
State B: V
input power supply selected, backflow from V
BAT
(OB1:ON, OB2:OFF, OU1:OFF, OU2:OFF, OC1:OFF, OC2:OFF)
State C: V
input power supply selected, full on state
BAT
(OB1:ON, OB2:ON, OU1:OFF, OU2:OFF, OC1:OFF, OC2:OFF)
State D: V
input power supply selected, backflow from V
CC
(OB1:OFF, OB2:OFF, OU1:OFF, OU2:OFF, OC1:ON, OC2:OFF)
State E: V
input power supply selected, full on state
CC
(OB1:OFF, OB2:OFF, OU1:OFF, OU2:OFF, OC1:ON, OC2:ON)
State F: V
and V
BAT
CC
on the V
side only.
CC
(OB1:ON, OB2:ON, OU1:OFF, OU2:OFF, OC1:ON, OC2:OFF)
State G: V
and V
BAT
CC
(OB1:ON, OB2:ON, OU1:OFF, OU2:OFF, OC1:ON, OC2:ON)
12
State B
input power supplies selected simultaneously (ON-ON), backflow from V
input power supplies selected simultaneously (ON-ON), full on state
State A
prevented
OUT
prevented
OUT
EPSON
S1F76980 Technical Manual (Rev.1.0)
State G
State F
State D
OUT
State E
prevented
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