Datakom DKG-307 Manual do Utilizador descarregar pdf (Página 18)

DKG-307 User Manual V-01.03

(14.02.2006)

- 18 -

Pgm Definition Unit Std Val Description

21 Hysteresis Voltage V 8 This parameter provides the mains and genset

voltage limits with a hysteresis feature in order

to prevent faulty decisions.

For example, when the mains are present, the

mains voltage low limit will be used as the

programmed low limit P_004. When the mains

fail, the low limit will be used as P_004+P_021.

It is advised to set this value to 8 volts.

22 Engine Heating

Temperature

ºC 50 If it is requested that the engine runs without

load until reaching a certain temperature, this

parameter defines the temperature.

23 Holdoff timer sec 8 This parameter defines delay after the engine

runs and before the fault monitoring is enabled.

24 Overcurrent / Excess

Power / Frequency Timer

sec 3 This is the period between the current or active

power goes over the limits (P_002/P_003) and

OVERLOAD alarms occurs.

This is also the period between the frequency

goes out of the limits (P_008/P_011) and SPEED

FAULT alarm occurs.

25 Wait before Fuel min 0 This is the time between the mains fails and the

fuel solenoid turns on before starting the

genset. It prevents unwanted genset operation

in battery backed-up loads.

26 Preheat timer sec 1 This is the time after the fuel solenoid is

energized and before the genset is started.

During this period the PREHEAT relay output is

energized (if defined by programming)

27 Start Timer sec 6 This is the maximum start period. Starting will

be automatically cancelled if the genset fires

before the timer.

28 Wait between Starts sec 10 This is the waiting period between two start

attempts.

29 Engine Heating Timer sec 3 This is the period used for engine heating

following the program parameter P_037.

30 Mains Waiting Timer min 0.5 This is the time between the mains voltages

entered within the limits and the generator

contactor is deactivated.

31 Cooling Timer min 1.0 This is the period that the generator runs for

cooling purpose after the load is transferred to

mains.

32 Generator Contactor

Timer

sec 1 This is the period after the mains contactor has

been deactivated and before the generator

contactor has been activated.

33 Mains Contactor Timer sec 1 This is the period after the generator contactor

has been deactivated and before the mains

contactor has been activated.

34 Stop Timer sec 10 This is the maximum time duration for the

engine to stop. During this period the STOP

relay output is energized (if defined by

programming). If the genset has not stopped

after this period, a STOP FAIL alarm will occur.

35 Start Attempts - 3 This is the maximum number of start attempts.

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 28 29

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