Number of Starting Attempts (P23)
Starting Attempt Duration (P24)
After that the unit energises the start solenoid to drive the starter motor and energises the Fuel
solenoid, the starting sequence commences. If the preheating output has been configured (see
section 5.1.15 Configurable Outputs), the display will show the HEAT message for the time period
set by Preheat Time (P09). After that the unit energises the start solenoid to drive the starter motor
and energises the Fuel solenoid (if selected – see Section 5.1.6 Stop/Fuel Solenoid selection
(P16)) to provide fuel for the engine.
If the unit detects that the engine has started, it de-energises the starter motor. Engine start
signals are defined by parameter P18 – see Section 5.1.8 Engine started signals (P18). Starting
Attempt Duration (P24) defines the maximum period for which drive will be applied to the starter
motor. If the unit does not detect engine starting within this period, it cuts off the drive to the starter
motor and de-energises the fuel solenoid, if selected. It then makes a new attempt after a delay
equal to twice the defined Starting Attempt Duration (P24).
Number of Starting Attempts (P23) defines the number of unsuccessful tries that the unit will
make before abandoning the attempts. If all these attempts fail, further operations are locked out
and a Failed to Start indication is displayed. The unit remains locked until the reset button has
been pressed.
5.1.10 Engine Starting
This sets the delay before a Low Oil Pressure warning will be generated. The Low Oil Pressure
fault indicator will light if the oil pressure switch contact remains opened, while the engine is
running, after the period defined by parameter. This period begins when the
EAOM-6
has
detected engine starting and has cut off the drive to the starter motor. This failure immediately
stops the generating set without Engine Cooling Time (P29).
5.1.11 Oil Pressure By-Pass Time (P25)
During the initial period after the engine has been started, there can be fluctuations in engine
speed and alternator output that could generate spurious fault indications. Control On Delay
(P26) defines a period during which any fault indications, except High Temperature, will be
ignored by the
unit. T
his period begins when the
EAOM-6
has detected engine starting and has
cut off the drive to the starter motor.
5.1.12 Control On Delay (P26)
Engine Cooling Time (P29) defines the duration of the cooling-off period. When operating under
heavy load, the engine can get very hot and is only prevented from overheating by circulating
coolant. If the engine is stopped abruptly under these conditions, it can overheat as the coolant
flow is cut off. Where the unit controls the load, via one of the configurable outputs, it can ensure
that the engine continues to run after the load has been removed.
5.1.13 Engine Cooling Time (P29)
26