Engine Control Unit (Ecu-845) - MQ Power DCA300SSJU4F3 Operation Manual

1
ECU
Series 800 Controller
A
Alarm Screen Program
Option
Acknowledge Change Exit
F G
E H
The definitions below describe the controls and functions
of the Engine Control Unit (Figure 8).
1. ECU-845 Controller — This auto star t/stop
controller displays the parameters and the diagnostic
troubleshooting messages of the engine.
In addition, this controller also displays symbols and
indications related to the exhaust gas after treatment
system (DOC, SCR) including the Diesel Exhaust Fluid
(DEF) level in the DEF tank.
A. ECU Display Screen — Engine fault diagnostic
messages are shown on this LCD display. screen
B. Engine Started Lamp — This lamp when lit
indicates engine is operating normally.
C. Engine Shutdown Lamp — When an engine
failure has occured this lamp will blink, indicating
the engine has been shutdown. The diagnostic
fault message will be displayed on the LCD screen.
D. Pre Alarm Lamp — When an engine failure has
occured this lamp will blink. Indicating a pre-fault
engine condition and the possibility of engine
shutdown.The diagnostic fault message will be
displayed on the LCD screen.
E. Alarm Acknowledge Button — When the engine
experiences a fault, the "Pre Alarm Lamp" or the
"Shutdown Lamp" will start blinking. Pushing this
button will confirm the fault message and the
blinking lamp will change to a solid lamp display.
PAGE 22 — DCA300SSJU4F2/F3 60 HZ GENERATOR • OPERATION MANUAL — REV. #2 (04/18/22)

ENGINE CONTROL UNIT (ECU-845)

B
Engine Started
C
Shutdown
Pre-Alarm
D
ECU
Figure 8. Engine Control Unit (ECU-845)
50 180 150
25 75 140 220 120 180
60
PSI °F I I I N N N C C C R R R E E E A A A S S S E E E
RPMX10
0 100 260 0
100 210
n/min
OIL PRESS WATER TEMP SPEED
18 50
12 24
Ｅ Ｅ Ｅ Ｃ Ｃ Ｃ Ｕ Ｕ Ｕ
%
0 VOLTS Integrated Gauge Panel
30 0 100
Check
½
DEF BATTERY ½ GENERATOR LOAD V V V
Emissions
Failure
Emissions
E
Failure F
E F
Regen U U U
Needed
D
Low
Regen FUEL
D Fuel DEF
Inhibit
O O O F F F F F F
V V V - - - W W W
Series 800 Controller
Engine Started
U U U - - - V V V
Shutdown
O O O F F F F F F
Pre-Alarm
Alarm Screen Program
Option
Acknowledge Change Exit
The fault message will be displayed on the screen.
When multiple engine faults occur, the lamp will
continue blinking until all fault messages are
confirmed. The blinking lamp will change to a solid
lamp display all current confirmed fault messages
will scroll across the screen.
F. Screen Change Button — When this button is
pushed during operation, the screen (Figure 9)
will cycle through main and secondary parameter
screens.
UO
VO
WO
Figure 9. Generator Parameter Screen
NOTICE
The screen as shown in (Figure 9) represents the
phase voltages for each phase to neutral (UO, VO and
WO) and the line voltages between each phase (UV,
VW and WU).
G. Option Button — This button is not active. Do
not use.
H. Program/Exit Button — Push this button from the
home screen to enter the main menu.
D D D E E E C C C R R R E E E A A A S S S E E E
W W W
W W W - - - U U U
VOLTS
278 480
UV
278
VW
480
278 480
WU
240 kW
60 Hz
ENGINE GENERATOR SYSTEM OK
AMPS
361
U
361
V
361
W
300 kVA
100 h