Basler DGC-500, Инструкция по эксплуатации, Страница: 77 / 154

Figure 4-12. Alarms Screen, Overspeed-Sender Fail Tab
Overspeed Alarm - Threshold (% of Rated). This setting selects the percentage of overspeed that triggers
an overspeed alarm and engine shutdown. The threshold is adjustable from 105 to 140 % of nominal
speed.
Overspeed Alarm - Alarm Activation (MilliSecond). This setting adjusts the time delay from when an
overspeed alarm condition is detected until it is annunciated and the engine is shut down. A time delay of
zero to 500 milliseconds may be entered.
Sender Failure Alarm - Cool Temp. Send Fail Alarm. This setting enables and disables alarm
annunciation and engine shutdown for a coolant temperature sender failure.
Sender Failure Alarm - Coolant Temp Alarm Delay. This setting adjusts the time delay from when a
coolant temperature sender failure is detected until it is annunciated and the engine is shut down. A time
delay of 5, 10, 15, 20, 25, or 30 minutes may be selected.
Sender Failure Alarm - Oil Press. Sender Fail Alarm. This setting enables and disables alarm
annunciation and engine shutdown for an oil pressure sender failure. An oil pressure sender failure alarm
is annunciated and engine shutdown is initiated when the Global Sender Failure Alarm Time Delay
expires.
Sender Failure Alarm - Loss of Gen. Voltage Alarm. This setting enables and disables alarm annunciation
and engine shutdown for a loss of generator voltage. A loss of generator voltage alarm is annunciated
when the generator voltage decreases below 1.5 Vac and the Global Sender Failure Alarm Time Delay
expires. This setting does not disable a Sender Failure Alarm for the speed signal source when generator
frequency is selected as the speed signal source.
Sender Failure Alarm - Global Sender Failure Alarm Time Delay (Sec). This setting selects the time delay
between when an oil pressure sender failure, loss of generator voltage failure, or MPU sender failure is
detected and alarm annunciation and engine shutdown.
Engine Cranking
Click the Crank button to access the Engine Cranking screen or click Screens on the menu bar and click
Crank Settings .
Engine Cranking settings are shown in Figure 4-13 and are described in the following paragraphs.
Cranking Style. This setting selects the cranking method as either continuous or cycle.
Crank Disconnect Limit (% of Rated). This setting selects the percentage of rated engine speed at which
cranking is terminated. A disconnect limit of 10 to 100 percent may be entered.
9355400990 Rev H DGC-500 BESTCOMS Software 4-9