Generac Power Systems 18 kW NG ユーザーズマニュアル
CONTROLLER DISPLAY
Cranking Attempt #1
= 12 VDC ALWAYS PRESENT
= AC VOLTAGE
= GROUND FOR CONTROL PURPOSES
= 12 VDC DURING CRANKING ONLY
= 12 VDC DURING ENGINE RUN CONDITION
= DC FIELD EXCITATION
= 5 VDC TO LED
= AC VOLTAGE
= GROUND FOR CONTROL PURPOSES
= 12 VDC DURING CRANKING ONLY
= 12 VDC DURING ENGINE RUN CONDITION
= DC FIELD EXCITATION
= 5 VDC TO LED
0
4
4
0
BA
6
11
22
6
2
2
REGULATOR
11
2
6
0
4
6
0
4
22
VOLTAGE
4
0
0
13
13
18
SP2
IM2
16
13
SCR
0
0
86
85
HTO
LOP
18
0
13
12V
BATTERY
SCR
SM
IM1
SP1
44
11
POWER
WINDING
33
22
WINDING
POWER
STATOR
4
0
56
0
SC
820
817
818
819
818
819
819
818
817
820
L2
L1
LED BOARD
4
3
2
1
4
ACTUATOR
GOVERNOR
14
14
90
OUTPUT
GENERATOR
240 VAC
NEUTRAL
INPUT
UTILITY
240 VAC
TRANSFER
+ BATTERY
GROUND
56
0
15B
23
23
0
0
FS
BATTERY WARMER
OPTIONAL
N1
00
22
33
11
44
CB
15B
14
0
0
CS
N2
N1
2
1
N2
N1
18
13
86
85
4
3
2
1
18
17
16
15
14
13
12
10
9
11
8
6 7
4
3
5
CB - CIRCUIT BREAKER, MAIN OUTPUT
HTO - HIGH TEMPERATURE SWITCH
FS - FUEL SOLENOID
LEGEND
SCR - STARTER CONTROL RELAY
SC - STARTER CONTACTOR
CS - CHOKE SOLENOID
LOP - LOW OIL PRESSURE SWITCH
SM - STARTER MOTOR
BA - BRUSH ASSEMBLY
IM_ - IGNITION MODULE
SP_ - SPARK PLUG
0
J3
J1
PRINTED CIRCUIT BOARD
TO
PCB
7.5 AMP FUSE
SELF RESETTING FUSE
CONTROLLER
J2
Page 108
utility VoltaGe dropout and enGine crankinG
• After ten (10) seconds and when the circuit board’s 10-second timer has timed out, if utility voltage is still below
65 percent of nominal, circuit board action will energize the circuit board’s crank and run relays simultaneously.
• Printed circuit board action delivers 12 volts DC to a starter contactor relay (SCR), via Wire 56. When the SCR
energizes, its contacts close and battery power is delivered to a starter contactor (SC). When the SC energizes,
its contacts close and battery power is delivered to the starter motor (SM). The engine cranks.
its contacts close and battery power is delivered to the starter motor (SM). The engine cranks.
Part 4
DC CONTROL
sEctioN 4.2
oPEratioNal aNalYsis