Filter
Top Products
Section 4
ENGINE DC CONTROL SYSTEM
Page 24
VOLTAGE
ELECTRONIC
REGULATOR
11S
162
0
6
44S
4
6
5
4
3
2
1
BCR2
77A
15
66A
564
1012
SSR
9
RESET
RESET
TEST
TEST
18
IM2
SP2
IM1
SP1
PRINTED CIRCUIT
BOARD
CONTROL
12 1011 9 278 6 45 3
J2
1
J1
15B
83
TR1
0
167
TR2
86
229
44S
11S
ACTUATOR
GOVERNOR
0 0 44C2211C22
C.B.
0000
222222
44D11D44B
11B
11B
0
11A44A
22
20A
C.B.
20A30A
C.B.
30A
C.B.
30A
C.B.
50A
C.B.
30A
C.B.
FIELD
0
167
SW1
BATTERY CHARGE WINDING
55A
10A BATTERY CHARGE WINDING
77
55
11S
112244
44S
66
77A 66A
62 4 0
C1-12C1-11C1-7C1-6C1-1
C1-2
C1-4
C1-9
C1-8
C1-10
C1-5
C1-3
77
66
BCR1
13A
CB2
83
167
229
15B
0
86
SW2
FSS
LOP
0
15
17
0
17
15
0
0
86
14
C2-8
C2-3
C2-4
C2-10
C2-5
C2-7
C2-1
C2-2
15
C2-12
0
0
16
SC
BATTERY
BLACK
RED
SC
SM
12V
CB1
15A 0
C2-6
C2-11
C2-9
13
13
F1
SCR
22914
15B
18
0
15
15 15
0
0
0
167
15
15
86
0
14
17
18
13
13
16
14
14
14
14
86
13
15
15
1515
15
15
15
15
14
18 18
167167
8686
4
4
162
11S
44S
22
11
0
44
11
0
22
44
11
0
22
44
11
0
22
4444
77A
77
66A
66
77
0
2
2
2
6
6
6
11S 4 044S
RED
BLK
BLK
83 0
0
00
0
229
15B
15
15
15
0
17
17
4
SCR - STARTER CONTACTOR RELAY
SW1 - START-RUN-STOP SWITCH
SSR - START / STOP RELAY
SP2 - SPARK PLUG, CYL. 2
SP1 - SPARK PLUG, CYL. 1
SM - STARTER MOTOR
SC - STARTER CONTACTOR
R1 - 25 OHM, 25W RESISTOR
IM2 - IGNITION MODULE, CYL. 2
FSS - FUEL SHUT OFF SOLENOID
CB1 - 10AMP AUTO RESET BREAKER
LOP - LOW OIL PRESSURE
IM1 - IGNITION MODULE, CYL. 1
GND - GROUND BAR
F1 - 10A FUSE
D2, D3 - ENGINE SHUTDOWN DIODE
BA - BRUSH ASSEMBLY
LEGEND
120/240V
50A
TWISTLOK TWISTLOK
120V/30A
TWISTLOK
120V/30A
DUPLEX
120V 120V
GFCI
30A
120/240V
POWER WINDING
DPE WINDING
I.C.T.
I.C.T.
I.C.
R1D1
TB1
TB2
D2
D3
12Vdc
BA
CB2 - 5AMP AUTO RESET BREAKER
D1 - 600V 12A DIODE
BCR2 - BATTERY CHARGE RECTIFIER
BCR1 - BATTERY CHARGE RECTIFIER, 10A
I.C.T. - IDLE CONTROL TRANSFORMER
SW2 - IDLE CONTROL SWITCH
TB1, TB2 - TERMINAL BLOCK
13
14
13
= 12 VDC SUPPLY
= 12 VDC CONTROL
= AC POWER
= GROUND
= IDLE CONTROL TRANSFORMER OUTPUT
CIRCUIT CONDITION - RUN:
Once the engine has started the Start-Run-Stop Switch (SW1) is released and will be in the run position, at this
point SW1 is not activated. This action will de-energize the Starter Contactor Relay (SCR) causing the Starter
Motor to disengage.
Printed circuit board action keeps Wire 229 held to ground this action holds the Start-Stop Relay (SSR) energized.
With the SSR energized Wire 14 maintains 12 VDC to the Fuel Shutoff Solenoid. Once the Voltage Regulator
starts functioning the field boost circuit is no longer a factor in operation. With the SSR energized Wire 15B main-
tains 12 VDC to the printed circuit board. With the SSR energized Wire 18 is not grounded and the magnetos con-
tinue to produce spark.
The two independent battery charge windings are now producing AC voltage and supplying this to BCR1 and
BCR2. The AC voltage is rectified through BCR1 and used to supply DC voltage to the 12 VDC accessory outlet.
The AC voltage is rectified through BCR2 and used to supply DC voltage to the battery for battery charging.