DKG-509 User Manual V-29 (23.08.2013)
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Dual genset intermittent operation consists of regular switching of the load between 2 gensets.
The use of 2 gensets instead of one is due either to safety purposes in case of a genset failure or to a
continuous operation requesting service stops.
The running period for each genset is adjustable using Flashing Relay Timer program
parameter. If the time is adjusted as 0 hours, it will be actually set to 2 minutes for faster testing
purposes.
A flashing relay output function is provided, based on the parameter Flashing Relay Timer.
Each time the period programmed using Flashing Relay Timer elapses, the relay output will change
position.
The flashing relay function may be assigned to spare relays using Relay Definition program
parameters. Also relays on an extension module may be assigned to this function.
The dual genset intermittent operation uses also the Mains Simulation feature. Please review
chapter 6.7 for a detailed explanation of this feature.
Priority In Dual Genset Mutual Standby Operation:
It may be required that the dual genset system starts the same genset at every mains failure.
This is achieved using the PRIORITY input.
Any digital input may be assigned as Priority using Input Function Select program
parameters.
It is also necessary to set the ACTION program parameter of the related input to 3 in order to
prevent any alarms generated from this input.
The Priority signal may be a NO or NC contact, switching to either battery positive or battery
negative. These selections are made using the programming menu.
If a Priority input is defined, then the system will work in priority mode. If the priority signal is
applied, the unit will become master after each mains failure. If the priority signal is not applied, then
the unit will become the slave one and the other genset will start.
Please contact DATAKOM for a complete application
manual.
6.9 Dual Genset Mutual Standby Operation
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