- 8 - 057-001 720 Operating Instructions Issue 3.1 20/12/2005 AM
3.3 AUTOMATIC OPERATION
This mode is activated by pressing the pushbutton. An LED indicator beside the button
confirms this action.
Should the mains (utility) supply fall outside the configurable limits for longer than the period of the
delay start timer, the mains (utility) is healthy indicator will extinguish. Additionally, while in AUTO
mode, the remote start input is monitored.
Whether the start sequence is initiated by mains (utility) failure, or by remote start input, the
following sequence is followed :
To allow for short term mains supply transient conditions or false remote start signals, 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, (or the Remote Start signal is
removed if the start sequence was initiated by remote start) during the Start Delay timer,
the unit will return to a stand-by state.
After the above delays the Fuel Solenoid is energised, then ½ second later, the Starter Motor is
engaged.
The engine is cranked for a configurable period. If the engine fails to fire during this cranking
attempt then the starter motor is disengaged for the configurable rest period. Should this sequence
continue beyond the 3 cranking attempts, the start sequence will be terminated and Fail to Start
fault will be displayed.
When the engine fires, the starter motor is disengaged and locked out at 20Hz measured from the
Alternator output.
After the starter motor has disengaged, the Safety On delay is activated.
‘Delayed’ alarms (underspeed, low oil pressure etc) will be monitored after the end of the Safety
On delay.
The Warmup timer (if configured) is then followed.
NOTE:- The set will not be allowed to load until all delayed alarms indicate “normal”
operation. This prevents excessive wear on the damage that could be caused by loading
an engine with low oil pressure.
If the remote start is being used and has been configured to Remote start is on load, or the mains
(utility) has failed, the load will be transferred to the generator.
On the return of the mains supply, (or removal of the Remote Start signal if the set was started by
remote signal), the Stop delay timer is initiated, once it has timed out, the load is transferred back
to the mains (utility). 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.
Should the mains supply fall outside limits again (or the Remote Start signal be re-activated)
during the cooling down period, the load will be immediately transferred to the generator.
Selecting STOP (O) de-energises the FUEL SOLENOID, bringing the generator to a stop.
