DKG-379 User Manual Rev_02
V-15
(24-12-2012)
K43D01-EN - 40 -
The battery bank voltage increases slightly with charge percentage.
Step_H:
The rpm is controlled in order to keep the battery bank voltage at
nominal boost voltage
.
The charge current decreases slowly.
Step_J:
When the charge current falls below the
stop current percent
, the controller decreases the rpm until charge
current becomes zero, then opens the load contactor and decreases the rpm until idle speed.
Step_K:
The idle speed is kept constant until the end of 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
.
If connected, the controller will take into account the battery bank temperature. The temperature sensor is of
industry standard PT100 type. (not provided with the controller)
During the charging cycle, if the battery temperature approaches the
maximum battery temperature
, then
the charge current will be reduced to a value lower than its maximum allowed limit.
When the temperature of the battery bank gets closer to the
maximum battery temperature
, the allowed
charge current will be reduced further until reaching 0% at the maximum battery temperature.
Thus the battery bank will not be allowed to overheat, that increases the battery lifetime.
The internal actuator driver will allow precise adjustment of the engine rpm during operation.
However the engine rpm will be limited to RPM high limit, whatever the charge current requirement is.
Thus the engine will be used with the greatest possible efficiency.
11.4. RPM CONTROL
11.3. EFFECT OF BATTERY BANK TEMPERATURE
