DKG-379 User Manual Rev_02
V-15
(24-12-2012)
K43D01-EN - 81 -
In most applications, the genset is requested to operate only in working hours. Thanks to the weekly
program feature, unwanted operation of the genset may be prohibited.
The scheduler is active only in
AUTO
mode. When the scheduler prevents genset operation in AUTO
mode, the
AUTO
led will flash.
The scheduler consists of 144 programmable parameters, one for each hour in a week. Thus every hour
of the week may be independently selected as ON or OFF times.
These programmable parameters allow the genset to operate automatically only in allowed time limits.
The unit has a battery backed-up precision real time clock circuit. The real time clock circuit will continue
its operation even in power failures. The real time clock is precisely trimmed using the
Real Time Clock
Adjust
program parameter. For more details check the programming section.
Especially on engines without a body heater, or with a failing one, it may be desired that the genset
should not take the load before reaching a suitable temperature. The unit offers 2 different ways of engine
heating.
1. Timer controlled heating:
This operation mode is selected when the
Engine Heating Method
parameter is set to
0
. In this mode,
the engine will run during parameter
Engine Heating Timer
, and then the genset will take the load.
2. Timer and temperature controlled heating:
This operation mode is selected when the
Engine Heating Method
parameter is set to
1
. In this mode, at
first the engine will run during parameter
Engine Heating Timer
, then it will continue to run until the
measured coolant temperature reaches the limit defined in parameter
Engine Heating Temperature
.
When the requested temperature is reached, the load will be transferred to the genset. This operation
mode may be used as a backup to the engine body heater. If the engine body is warm the heating will be
skipped.
It may be required that the engine runs at the idle speed for a programmed duration for engine heating.
The idle operation duration is adjusted with the parameter
Idle Speed Timer
. The idle speed will be set
by the governor control unit of the engine.
Any digital output may be assigned as
IDLE output
using
Relay Definition
program parameters.
The Idle speed operation is performed both in engine start-up and cool-down sequences. Low speed and
low voltage protections are disabled during idle speed operation.
18.10. Engine Idle Speed Operation
18.9. Engine Heating Operation
When the scheduler prevents genset operation in
AUTO mode, the AUTO led will flash.
18.8. Weekly Operation Scheduler
