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D-500 MK2 User Manual
6.2 SYNCHRONIZATION FUNCTIONALITY
The synchronization functionality is used to parallel 2 or more gensets on the same busbar, in order to
increase the total genset power rating or in order to have redundancy/reserve power for a more reliable
operation.
A maximum of 48 gensets can be paralleled on the same busbar using D-500 units. Always one of the
gensets will become the MASTER one. It will determine the voltage and frequency of the busbar. When
more than one genset start together, the master genset will always feed the busbar first. Other gensets
will synchronize to the busbar, get in parallel and share the load.
Max 48
gensets
When SYNCH mode is selected, the controller will monitor its REMOTE START input. If the remote start
input is active, it will run the genset (depending on settings). The remote start signal is usually provided
by a Mains Synchronization unit or an ATS controller. It can be a manually controlled signal as well.
If the Genset busbar is not energized, when the engine runs, the controller will immediately close the
genset contactor and feed the busbar. It will also become the MASTER.
If the genset Busbar is already energized, then the controller will synchronize the genset to the Busbar,
then close the genset contactor. After this, it will start to share the load.
Ramping for soft loading and unloading is provided as an inherent feature.
Datalink
Bus
To mains
controllers
- 45 -
Firmware V-6.3
TO LOAD
Genset
Busbar
Genset
Contactor
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