Basler DGC-2020ES Configuration Instruction Manual page 72

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Figure 7-3. Settings Explorer, Programmable Senders, Coolant Temperature Screen
Sender Failure Detection
The DGC-2020ES can be configured to annunciate a pre-alarm or alarm when a loss of signal is detected
at the coolant temperature, oil pressure, or fuel level sender input. Contact recognition can be set to
Always or While Engine Running Only. Minimum and Maximum resistance values can be set. When the
SF Display setting is set to Enable, "SF" is displayed instead of the measured parameter when the
resistance value is outside the range specified by the Minimum and Maximum Resistance values. A loss
of generator sensing voltage (when the DGC-2020ES is operating in Run or Auto mode with the ATS
closed) can also be configured to trigger a pre-alarm or alarm. The speed sender fail alarm is always
enabled. A user-adjustable time delay is provided for each sender/sensing alarm/pre-alarm.
Alarm and pre-alarm annunciations for loss of engine speed signals are not user-programmable and
operate as follows. If the MPU (magnetic pickup) or generator frequency is programmed as the sole
engine speed source and that signal source fails, an alarm (and shutdown) is triggered. If the engine
speed source is configured as MPU and generator frequency and a loss of one of the signal sources
occurs, a pre-alarm is annunciated. An alarm (and shutdown) is triggered if both speed signals are lost.
The BESTCOMSPlus Sender Fail screen is illustrated in Figure 7-4 and is found in the Settings Explorer
under Alarm Configuration. If using the front panel, navigate to Settings > Alarm Configuration > Sender
Fail.
Voltage Sensing Fail
The voltage sensing fail function monitors the generator line-to-neutral voltages. If any of the line-to-
neutral voltages decreases below 2% of the CT secondary voltage for the duration of the Activation
Delay, the DGC-2020ES detects a Voltage Sensing Fail condition and annunciates an alarm based on
the Alarm Configuration setting.
Engine Sender Inputs DGC-2020ES