Kubota u15-3 Workshop Manual page 165

2. Auto relase control, structure and function
(2)
(4)
(3)
(1)
ON
OFF
N1
ON DV)
OFF
Function :
1. After engine starts and when alternator speed reaches to set value (P-terminal = N1), then transistor of
the auto release controller turns OFF, terminal
tion.
2. While engine is running (P-terminal = N2 or more), auto release controller terminal
auto release relay stays OFF - condition.
Even if the main key is turned to the start - position.
3. Under the condition of low battery voltage (approx 6 V or lower) and main switch being at start position
even at any engine speed, then the transistor of the auto release controller turns ON - condition, terminal
become L-level and auto release relay gose ON - condition. Then battary current flows to the starter.
(5)
2
6V
(6)
1
650r/min 800r/min
4
N2
(7)
6
N1 :
N2 :
(N = 120f )
P
stays H-level and auto release relay gose OFF - condi-
II-145
WSM U15-3
(1) Battery 12V
(2) Main switch
(3) Alternator
(4) P - terminal
(5) Low voltage detection
(6) Rotation detection
(8)
(7) Starter relay
(Auto relase lever)
(8) Starter
stays H-level and