DSE Model 5510 Autostart Control and Instrumentation System Operators Manual
057-015 5510 OPERATING MANUAL ISSUE 11 07/07/09 AM 9
When the engine fires, the starter motor is disengaged and locked out at a pre-set frequency
measured from the alternator output. Alternatively, a Magnetic Pickup mounted on the flywheel
housing can be used for speed detection (This is selected by PC using the 5xxx series configuration
software). Rising oil pressure can also be used to disconnect the starter motor, however it cannot
be used for underspeed or overspeed detection.
NOTE:- If the unit has been configured for use with an electronic engine, speed sensing
is via the data-link.
After the starter motor has disengaged, the Safety On timer is activated, allowing Oil Pressure,
High Engine Temperature, Under-speed, Charge Fail and any delayed Auxiliary fault inputs to
stabilise without triggering the fault.
If the system has been started by a ‘remote start off load’ input, the set will run ‘off load’.
Otherwise, the Warm Up timer, if selected, is initiated, allowing the engine to stabilise. After the
Warm-up timer has expired then the module will close the load switching device.
In the case of a single generator system, the Generator Contactor/Breaker will be instructed to
close. The generator will then supply the requirements of the load.
On a multi-set system, if the common generator bus is live, the 5510 module will first synchronise
the generator to the bus before closing the Generator Contactor/Breaker.
A ‘token‘ is held by the module that first closed onto the dead bus and as only one token exists for
each multi-set system, this prevents other sets in the system from attempting to close their own
breakers.
For added security, the modules also monitor the bus. If this is found to be live, then the
synchronisation process begins.
Once the load switching device is closed, the 5510 will then ramp to share the load with the other
generators in the system.
NOTE:-A load transfer will not be initiated until the Oil Pressure has risen. This prevents
excessive wear on the engine.
When the Remote start signal is removed, the Stop delay timer is initiated. Once this has expired,
the module will ramp the load from the generator to remaining set (Multi-set systems only). The
Generator Contact/Breaker will open and the Cooling timer is then initiated, allowing the engine a
cooling down period off load before shutting down. Once the Cooling timer expires, the Fuel
Solenoid is de-energised, bringing the generator to a stop.
For full details of multi-set operation please refer to the manual ‘The Guide to sync and load share
Pt1’
Should the Remote Start signal be re-activated during the cooling down period, the set will return
on load.
NOTE:- When synchronising is enabled, the bus is checked before closing any load
switching device. If the bus is live, synchronising will take place before any closure takes
place.
NOTE:- Synchronising can be disabled if the application does not require this function.
Contact your genset supplier in the first instance for further details.
