Digital Control Box - Westerbeke 7.6 kw EDT Operator's Manual

DIGITAL CONTROL BOX
FREQUENCY FAULT
Frequency is displayed on the LCD display screen while the
engine is running in 'RPMand frequency (hertz),
The ECU is receiving a low AC voltage signa! and hertz
sigoa! from the MPU which is positioned on the bellhousing
over the flywheel ring gear teeth. The ECU interprets this
signal as bOtll RPM and hertz.
Should this signal vary approximately 2% either up or down,
a frequency fault shut down will occur, initiated by the ECU.
The red failure LED on the display panel will illuntinate, the
frequency LED will turn from green to amber and the LCD
display screen will show the fault text "overspeed".
NOTE: If the unit shuts down for an underspeed condition, the
same fault lIoverspeed" will show on the screen but the
frequency LED will BUNK.
WHEN CHANGING
T%~,f%:~:~~DJ.~S
, FREQUENCY (50160 'HZ)
ON THE CONTROL PANEL ECU
BOARD MUST BE SWITCHEI1:
.O,N FOR 50 HZ AND OFF FOR 60 HZ
CONTROL B_O,JX
M
IPONENTS
INTERNAL
101
SAM?
F".F ....
~
GENERATOR FREQUENCY ADJUSTMENT (HERTZ)
CAUTION: When changing the generator frequency setting on
the ECU, tum off the 20 amp DC circuit breaker, on the control
box. Tum it back on after the setting has been changed
NOTE: If the unit shuts down for an underspeed condition, the
same fault "overspeed" will show on the screen but the
frequency LED will
BLINK.
1. Turn the DC brenker on the control panel to th'-OFF
position.
2. Open the covel' of the control box and view the BCU
(Electronic Conu'ol Unit).
3. Locate the' #1 dipswitch on the ECU and move it to the
position that corresporids to the Hem operation desired).
See tile illustration below showing the ECU in the
control box.
4. Replace the control box cov.er, tum the DC brenker,ON
and start the unit. Monitor the frequency that the
engine/generator is operating is opemting at ihe COlTeC!
frequency. '
~5111t?l~;AMPDC
BREAKER
NOTE: DURING OPERATION THE COLOR
OF THE LCD DISPLAY MAY VARY.
CAUSED BY HEAT, THIS IS NORMAL
AND NO CAUSE FOR CONCERN.
CAUTION (WESTERLINK or NMEA-2000): The electronic components in the Digital Diesels draw a very small amount of amperage (milli-amps)jrQm the
generator! starting battery whell
rile.
unit is in a static state. This maybe as much as 50 mil/i-amps/ar the system ECU and 50 miUi-ampsfor each displp.y.
This can be as much as 72 amp-hours in a months time with no generator use. It is not necessary to' be concerned with this slight amperage draw during
~onnal
;reasonal use. However, ijrhe generator set is not to be used/or a number a/months, such as winter storage,
it
is best to disconnect the DC power
to the generator with a NMEfi.-200Q $)Istem or shill off the DC breaker
~n
the generator's control box for a WESTERLINK system. .
NOTE:
Keep in mind that the Westerbeke generator maybe the DC power supply for the vessel'.s
NlvlEA~2000
network.
~
WESTERSEKE
Engines & Generators
8·