Westerbeke 8.0KW-60Hz Service Manual page 83

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GENERATOR FREQUENCYNOLTAGE CHANGES
GENERATOR FREQUENCY CHANGES (HERn)
Generator Frequency is a direct result of engine/generator
rotational speed, as indicated by the following:
When the generator is runnlng at 1800 rpm. The AC
voltage ontpnt frequency is 60 HertZ.
When the generato! is runnlng at 1500 rpm. The AC
voltage output frequency is 50 Hertz.
1. Thrn the DC breaker on the control panel
to
the OFF
.position. .
2. Open the cover of the control box and view the ECU
, . (Electronic Control Unit).
Therefore to change the generator's frequency, the engine
speed must be changed. To accomplish the frequency change
~n
tJ:e D-Net diesel
~nit
is a very simple task.
3. Locate the #1 dipswitch on the ECU and move it to the
position that correspond&
to
the Hertz operation desired).
See the illustration below showing the ECU in the
control box.
4. Replaqe the control box cover, turn the DC breaker ON
and start the unit. Monitor the frequency that the
engine/generator is operating is operating at the correct
frequency.
WHEN
CH~Ii4:~NG~/N~G~ig'~f'~~';rnR!'~";:
FREQUENCY
ON THE
BOARD MUST BE
ON FOR 50 HZ AND OFF FOR 60 HZ
CONTROL
INTERNAL COMPONI,NTS!
CAUTION (WESTERLINK Dr NMEA·2000):
The electronic components in the Digital
Diesels draw a very small amount of
amperage (milli.amps)from the ' .
generator's starting battery wflen
the \
unit is in a static state. This maybe as
much as 50 milli-amps for the system
ECU and 50 milli-amps for each display.
This can be as much as 72 amp-hours in a monthS
time
with
no generator use,
[t
is not necessary to be
. concerned with this slight amperage draw during nonnal
seasonal use. However,
if
the generator set is not to be
used for a number of months. such as winter storage. it is
best to disconnect the DC power to the generator with a
NMEA·2000 system or shut off the DC breaker on the
gener~tor:S
control boxfor a,WESTERLlNK system.
NOTE: Keep in mind that the Westerbeke generator maybe
the
DC
power supply for the vessel
~
NMEA-2000 ne/Work.
BliMP
PROTECTS" .
pANEL~
ELECTRONICS FROM
Ai
HIGH AMP OVERLOAD'
LCD DiSPLAY
. 20 AMP DC CIRCUIT
BREAKER (ECU)
ECU CONNECTIONS
LCD DISPLAY PANEL
Periodically clean the control panel and its LCD screen using
a soft cloth.
NOTE:
Operating temperatures may cause the LCD display to
vary
in
color.
This is
nonnal and a clumge
in
color will not
affect the operation of the control panel.
"""" WESTERBEKE
EngineS
&
Generators
... 77 '