Engine Control Unit (Ecu-845) - MQ Power WHISPERWATT DCA600SSV4F3 Operation Manual

1
ECU
Series 800 Controller
A
Alarm Screen Program
Option
Acknowledge Change Exit
E F G
H
The definitions below describe the controls and functions
of the engine control unit (ECU). See Figure 6.
1. ECU-845 Controller — This engine-generator
controller displays parameters and diagnostic trouble
codes for the engine.
The 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 screen.
b. Engine Started Lamp — When lit, indicates the
engine is operating normally.
c. Engine Shutdown Lamp — When an engine
failure has occured this lamp will flash, indicating
the engine has shut down. The diagnostic trouble
code will be displayed on the LCD screen.
d. Pre-Alarm Lamp — When an engine failure has
occurred this lamp will flash, indicating a pre-fault
engine condition and the possibility of engine
shutdown.The diagnostic trouble code 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 flashing. Pushing this
button will confirm the fault message and the
flashing lamp will change to a solid lamp display.
The fault message will be displayed on the screen.
PAGE 20 — DCA600SSV4F3 60 HZ GENERATOR • OPERATION MANUAL — REV. #2 (11/15/22)
B
Engine Started
C
Shutdown
Pre-Alarm
D
Figure 6. Engine Control Unit (ECU-845)

ENGINE CONTROL UNIT (ECU-845)

When multiple engine faults occur, the lamp will
continue flashing until all fault messages are
confirmed. The flashing lamp will change to a
solid lamp display and all current confirmed fault
messages will scroll across the screen.
Screen Change Button — When this button is
f.
pushed during operation, the screen (Figure 7)
will cycle through main and secondary parameter
screens.
UO
VO
WO
Figure 7. Generator Parameter Screen
NOTICE
The screen shown in Figure 7 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.
VOLTS
277 480
UV
277
VW
480
277 480
WU
480 kW
60.0 Hz
ENGINE GENERATOR SYSTEM OK
AMPS
722
U
722
V
722
W
600 kVA
00100.0 h