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DSE Model 8620 AMF Controller Operators Manual
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6.5 AUTOMATIC OPERATION
6.5.1 MAINS FAILURE
This mode of operation is used to ensure continuity of supply to critical loads during a mains failure
condition. This is the normal mode of operation when installed on a standby generator.
NOTE:
If a digital input configured to panel lock is active, changing module modes will not
be possible. Viewing the instruments and event logs is NOT affected by panel lock.
This mode is activated by pressing the pushbutton. An LED indicator beside the button will
illuminate to confirm this operation.
Auto mode will allow the generator to operate fully automatically, starting and stopping as required
with no user intervention.
Should the mains (utility) supply fall outside the configurable limits for longer than the period of the
mains transient delay timer, the mains (utility) available GREEN indicator LED extinguishes.
To allow for short term mains supply transient conditions, the Start Delay timer is initiated. After this
delay, if the pre-heat output option is selected then the pre-heat timer is initiated and the corresponding
auxiliary output (if configured) will energise.
NOTE: - If the mains supply returns within limits during the Start Delay timer, the unit will return to a
stand-by state.
After the above delays have expired the Fuel Solenoid (or enable ECU output if configured) is
energised, then one second later, the Starter Motor is engaged.
NOTE:- If the unit has been configured for CAN Bus, compatible ECU’s will receive the start command
via CAN Bus. Refer to the Manual CAN and DSE Wiring. Part No. 057-004 for more information on utilising
DSE modules with electronically controlled engines.
The engine is cranked for a pre-set time. If the engine fails to fire during this cranking attempt then the
starter motor is disengaged for the pre-set rest period. Should this sequence continue beyond the set
number of attempts, the start sequence will be terminated and Fail to Start fault will be displayed.
Alarm
Shutdown
Fail to start
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 86xx 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 CAN Bus, speed sensing is via CAN Bus.