Onan MDKBH Series, Руководство по обслуживанию

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9-1
9. Genset Control
OVERVIEW
Figure 9-1 illustrates the location and mounting of
the genset controller behind the air inlet screen on
the front of the genset. The control board has a mi-
croprocessor controller that provides all the control,
monitoring and diagnostic functions required to op-
erate the genset.
Up to three Onan e- Series Digital Displays (Fig-
ure 2-1) may be connected to the genset for opera-
tor control and monitoring.
An optional Network Interface Module (NIM) is
available for mounting in the control box for connec-
tions to an integrated boat monitoring system
(p. 9-8).
Figure 9-2 is a control block diagram. Pages A-1
through A-3 are the control schematic and connec-
tion drawings.
GENSET CONTROLLER
Configuring a Replacement Controller
A replacement controller must be configured to the
genset model and generator. See Page 2-7.
Connectors
WARNING
Accidental or remote starting can
cause severe personal injury or death. Before
removing a housing panel or access door, dis-
connect the negative (–) cable at the battery to
prevent the engine from starting.
CAUTION
Makeshift meter test probes used
for testing Control Board connections during
troubleshooting can damage pin sockets by
spreading or dislodging the contact wiper arms,
resulting in an open or intermittent electrical
connection. Use a mating pin (PN 323–1491) or a
test probe that is 0.045 inches in diameter. Re-
place damaged pin sockets (PN 323–1492).
Make sure the pin sockets are fully seated and
cannot be pulled out.
All connections to the controller are through con-
nectors P1 (black), P2 (grey) and P3 (green).
When removing a connector from the controller,
squeeze the locking tabs on the sides while pulling it
out. When reinstalling a plug, make sure the seal is
in place and that the locking tabs snap into position.
Removing / Replacing the Controller
The controller is mounted in the second intake reso-
nator chamber where it is cooled by the intake air
and is accessible through the left access panel (Fig-
ure 9-1). It is easier to remove if all the screws se-
curing the front / left side panel are loosened from
the drip pan and other panels so that the panel can
be shifted. Alternatively, remove the AC output box.
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