DSE Model 8620 AMF Controller Operators Manual
82
The generator will run off load unless:
1. The mains supply fails,
2. A Remote Start on load signal is applied, or an on-load run is configured in the scheduler.
3. The
Close Generator button is pressed.
If any of the above signals are received, the generator is synchronised and paralleled with the mains
supply (if available).
During the parallel run, the module can be configured to either run at a fixed level output, or to maintain
an output in relation to the load level on the mains. For full details of these mode please refer to the
manual ‘The Guide to sync and load share Pt1’
Parallel operation:
• If the
Close Generator button is pressed again while in parallel, then the module will transfer
the load fully to the generators, removing the load from the mains supply. This will be achieved by
ramping the load from the parallel operating level to the generator. The Mains Contactor/Breaker
will then be opened. Pressing the
Close Mains button will cause the module to re-
synchronise the generator with the mains supply and then return to parallel operation.
• If the
Close Mains button is pressed while in parallel, the module will open the generator load
switching device, transferring the load fully to the mains supply.
If Auto mode is selected and the mains supply is healthy, and the remote start on load signal not
active, and the scheduler is not calling for a run, then the Return Delay Timer will start.
Once this has expired then the module will exit parallel operation and will ramp the load back to the
mains supply. It will then open the Generator Contactor/Breaker. The generator will then run off load
allowing the engine a cooling period.
Selecting STOP (O) de-energises the FUEL SOLENOID, bringing the generator to a stop.
WARNING: - Operation of the STOP button in any mode will stop the generator operation and return
the load switching system to a safe state. This operation may lead to loss of supply to the load. It is
recommended that the STOP button is only operated once the generator is OFF LOAD and the mains is
supplying the load.
NOTE: - Synchronising can be disabled if the application does not require this function. Contact your
genset supplier in the first instance for further details. If synchronising is disabled the system will always
perform an open transition when switching the load from the mains to the generator or when returning to
the mains. The parallel run stages of the sequence are not used when operating in this way.
NOTE: - When synchronising is enabled, the mains supply is checked before closing any load switching
device. If the supply is live, synchronising will take place before any closure takes place.
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