DKG-379 User Manual Rev_02
V-15
(24-12-2012)
K43D01-EN - 42 -
Below picture describes the charge cycle steps in detail.
Step_A:
The genset is at rest.
The load consumes power from the battery bank.
The battery bank voltage decreases slowly with discharge level.
When the battery bank voltage falls below the
start to charge voltage
, after the
charge voltage threshold
timer, the controller detects that the battery bank is discharged and decides to run the genset.
Step_B:
The engine is started, the genset output voltage increases with rpm increase.
Step_C:
After Genset Contactor Timer, the load contactor is closed. The genset starts the charging of the battery
bank. The charge current is not controlled.
Step_D:
The battery bank voltage increases slowly until reaching the nominal genset DC output voltage.
Step_E:
The genset keeps the output voltage constant at the nominal genset DC output voltage.
The charge current decreases slowly.
Step_J:
When the charge current falls below the
stop current percent
, the controller opens the load contactor and
activates the idle speed output (if enabled).
Step_K:
Engine cooldown period.
Step_L:
The engine comes to rest.
The load consumes power from the battery bank.
The battery bank voltage decreases slowly with discharge level.
The controller will wait until the battery bank voltage falls below the
start to charge voltage
.
12.2. UNCONTROLLED CHARGE CYCLE DESCRIPTION
