Datakom D-500 MK3, User Manual

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D-500 MK3 User Manual Firmware V-7.5
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Droop mode allows an uncontrolled load share for emergency cases where the Datalink and Analog Load
Share are not available.
This is the most primitive load sharing method, often used in old times.
The speed droop consists of a slight decrease in the genset speed with increasing active power demand.
The voltage droop is a slight decrease in the alternator voltage with increasing reactive power demand.
As there is no communication between controllers in the absence of the Datalink, no smart load
management is performed. When the REMOTE START signal comes, the genset runs, synchronizes to
the busbar and closes its genset contactor.
The amount of active and reactive powers supplied to the load is controlled by the droop function. The
genset will stop only when the REMOTE START signal is removed.
Parameters used in the droop mode load sharing: (details are in the programming section)
Governor Droop Enable
Governor Output Droop
AVR Droop Enable
AVR Output Droop
Droop mode load sharing is less accurate than digital load sharing.
Differences between genset loads should be considered as normal.
In order to achieve an acceptable load sharing, each genset must have
the same nominal voltage and frequency settings.
30.3. DROOP MODE OPERATION