Datakom DKG-205 Manuel de l'utilisateur - Page 10
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ALTERNATOR HIGH TEMPERATURE ALARM: It turns on if a signal comes
from the high temperature switch of the alternator. WARNING: This switch
shall be normally closed, and open in case of excess of heat. If this input is not
used, connect it to DC Supply negative terminal, else an alarm will be given
continuously. This alarm will cause the generator to release the load, but the
engine runs until the end of the cooling period.
HIGH TEMPERATURE ALARM: It is on when a signal comes from the high
temperature input.
OIL ALARM: It is on when a signal comes from the oil pressure input. This
alarm will be controlled 4 seconds after the engine is running. If oil pressure is
provided when the unit attempts to start the engine, the oil alarm indicator will
flash and the unit will wait until oil pressure disappears.
LOW COOLANT LEVEL ALARM: It is on when a signal comes from the
cooling radiator water level switch. This input has delayed sampling feature to
prevent false detection.
OIL HIGH TEMPERATURE ALARM: It is on when a signal comes from the
oil high temperature switch.
FREQUENCY ALARM: It is on when the alternator frequency is out of the
programmed limits for a longer period than the programmed timer. Alternator
frequency will be controlled 4 seconds after the generator contactor is on.
VOLTAGE ALARM: It is on when at least one of the alternator phase voltages
is out of the programmed limits. Alternator voltage will be controlled 4 seconds
after the generator contactor is on.
FAIL TO START: It is on if the engine cannot start to run after the
programmed number of start attempts. This alarm will be erased when the
mains are on in order to keep the engine ready for the next mains failure.
EMERGENCY STOP ALARM: It arises if emergency stop button (or front
panel STOP key) has been pushed. This alarm is not latched. The alarm
condition disappears when the signal is removed. This input is also used
externally to prevent the operation of the generator (for ex. by a timer).
DC SUPPLY ALARM: It is on when DC Supply voltage is above the
programmed limit. It arises at the end of 2 seconds delay period. It does not
occur if DC Supply voltage goes back below the limit before the end of the
delay period. This protection is particularly designed against charge alternator
failures.
SPARE-1 ALARM: It turns on when a signal comes from the spare-1 alarm
input.
SPARE-2 ALARM: It turns on when a signal comes from the spare-2 alarm
input
SPARE-3 ALARM: It turns on when a signal comes from the spare-3 alarm
input. This alarm will not stop the engine.
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