Datakom DKG-205 Manual do utilizador - Página 11

Procurar online ou descarregar pdf Manual do utilizador para Controlador Datakom DKG-205. Datakom DKG-205 20 páginas. Automatic mains failure unit

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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