Datakom DKG-205 Benutzerhandbuch - Seite 11
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2.9 Modes of Operation
The modes of operation are selected by pushing the front panel keys. If the
mode is changed while the engine is running, it will be stopped. Do not change
the operation mode while the generator is in operation.
OFF: In this mode, the mains contactor will be energized if mains phase
voltages are within the programmed limits. The engine will be stopped.
MANUAL: It is used to start and stop the generator manually. If the manual
mode is selected, the fuel relay will be activated and the generator will be
ready to be started.
START: It is used to manually start the generator unlimited times. In
order to start, it is needed not to have the oil pressure. When the
generator phase voltages are present or the generator frequency
goes over 10 Hz, starting will be automatically disabled even if the
button is pressed.
STOP: It is used to manually deactivate the fuel solenoid as long as
desired. When the stop button is pushed, the generator contactor will
also be deactivated.
MAINS/GENERATOR: It is used to manually activate the mains and
the generator contactor. If it is pressed once, the generator contactor
will be activated, if it is pressed once the mains contactor will be
activated.
AUTO: It is used for generator and mains automatic transfer. If at least one of
the mains phase voltages is outside limits, the mains contactor will be
deactivated.
The diesel will be started for programmed times after the wait period. When
the engine runs, the crank relay will be immediately deactivated. After the
alternator phase voltages are within limits, the unit will wait for the generator
contactor period and the generator contactor will be energized.
When all the mains phase voltages are within the limits, the engine will
continue to run for the mains waiting period. At the end of this period the
generator contactor is deactivated and the mains contactor will be energized.
If a cooling period is given, the generator will continue to run during cooling
period. At the end of the period, the fuel solenoid will be de-energized and the
diesel will stop. The unit will be ready for the next mains failure.
TEST: It is used to test the generator when the mains are on, or keep the
generator waiting in the emergency backup mode. The operation of the
generator is similar to the AUTO mode, but the mains contactor will not be
deactivated if the mains are not off. If the mains are off, mains contactor will
be deactivated and the generator contactor will be activated. When the mains
are on again, a changeover to the mains will be made, but the engine is kept
running. In order to stop the engine, push the OFF button.
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