Winco DGC-500 - Manual (Page 31)

DGC-500 Functional Description 3-11
Low Oil Pressure
A low oil pressure alarm occurs when the engine oil pressure decreases below the low oil pressure alarm
setpoint for the duration of the low oil pressure time delay setting. Both settings are made in BESTCOMS.
When a low oil pressure alarm occurs, the LCD indicates LOW OIL PRESSURE and the current low oil
pressure alarm setting. A 10 second activation time delay prevents low oil pressure annunciation during
engine startup.
The low oil pressure setpoint has a setting range of 3 to 150 psi or 20 to 1,035 kPa and the low oil pressure
time delay has a setting range of 5 to 15 seconds.
Low Fuel Level
A low fuel level alarm occurs when the fuel level decreases below the setpoint programmed in BESTCOMS.
When a low fuel level alarm occurs, the LCD indicates LOW FUEL LEVEL and the current low fuel level alarm
setting.
The low fuel level setpoint has a setting range of zero to 100 percent.
High Coolant Temperature
A high coolant temperature alarm occurs when the coolant temperature exceeds the setpoint programmed
in BESTCOMS. When a high coolant temperature alarm occurs, the LCD indicates HIGH COOLANT TEMP
and the current high coolant temperature setting. A 60 second activation time delay prevents high coolant
temperature annunciation during system startup.
The high coolant temperature setpoint has a setting range of 100 to 280°F or 38 to 138°C.
Overspeed
An overspeed alarm occurs when the engine speed exceeds the overspeed setpoint for the duration of the
overspeed time delay. Both settings are made in BESTCOMS. When an overspeed alarm occurs, the LCD
indicates OVERSPEED and the current overspeed setting.
The overspeed setpoint has a setting range of 105 to 140 percent and the overspeed time delay has a setting
range of zero to 500 milliseconds.
Loss of Generator Voltage
A loss of generator voltage alarm can occur only when the loss of generator voltage alarm is enabled in
BESTCOMS. When the sensed generator voltage decreases below 1.5 Vac for the duration of the global
sender failure alarm time delay, a loss of generator voltage alarm occurs. The global sender failure alarm time
delay is adjustable from 1 to 10 seconds.
Oil Pressure Sender Failure
An oil pressure sender failure alarm occurs when the DGC-500 oil pressure transducer input senses a sender
failure for the duration of the global sender failure alarm time delay. The oil pressure sender failure alarm is
enabled and the global sender failure alarm time delay is set in BESTCOMS.
Coolant Temperature Sender Failure
A coolant temperature sender failure alarm occurs when the DGC-500 coolant temperature transducer input
senses a sender failure for the duration of the coolant temperature alarm delay time. The coolant temperature
sender failure alarm is enabled and the coolant temperature alarm delay is set in BESTCOMS. The coolant
temperature alarm delay is adjustable from 5 to 30 minutes in 5 minute increments.
Speed Source Failure
A speed source failure can occur for either of two conditions. If MPU (magnetic pickup) is selected as the
generator speed signal source and the MPU signal is lost, a speed source failure alarm will occur. If GEN
FREQ (generator frequency) is selected as the generator speed signal source and a loss of generator
frequency is detected, a speed source failure alarm will occur.