TP-6953 7/1944 Section 2 Operation
Low Battery Voltage. The fault lamp illuminates yellow
and the alarm horn sounds when the battery voltage
drops below a preset level for more than 90 seconds.
Engine Electrical
System Voltage
Low Battery
Voltage Range
Low Battery Voltage
Default Setting
12 9.6- 12.6 12
24 19.2- 25.2 24
Figure 2 -7 Low Battery Voltage Specs
The low battery voltage feature monitors the battery and
battery charging system in the generator set operating
and off modes. The controller logic inhibits the low
battery voltage warning during the crank cycle.
Low Coolant Temperature. The fault lamp illuminates
yellow and the alarm horn sounds when the engine
coolant temperature is low. The low coolant
temperature warning does not function during the preset
inhibit t ime delay period after startup.
Low Cranking Voltage. The fault lamp illuminates
yellow and the alarm horn sounds when the battery
voltage drops below 60% of the nominal voltage (12 or 24
VDC) for more than 6 seconds during the crank cycle.
Low Engine Oil Level. The fault lamp illuminates
yellow and the alarm horn sounds because of low
engine oil level. This fault feature requires an optional
low engine oil level sensor for the lamp to function.
Low Fuel Level. The fault lamp illuminates yellow and
the alarm horn sounds when the fuel tank level on
diesel-fueled models approaches empty. This fault
requires an optional low fuel level switch for the lamp to
function.
Low Fuel Pressure. The fault lamp illuminates yellow
and the alarm horn sounds when low fuel pressure
occurs. This fault requires an optional low fuel pressure
switch for the lamp to function.
Low Genset System Frequency. The fault lamp
illuminates yellow and the alarm horn sounds when
another generator in the paralleling system has a higher
system frequency t han this generator. The local display
shows System Frequency, FMI: Low.
Low Genset System Voltage. The fault lamp
illuminates yellow and the alarm horn sounds when
another generator in the paralleling system has a higher
system voltage than this generator. The local display
shows System Voltage, FMI: Low.
Low Oil Pressure. The fault lamp illuminates yellow
and the alarm horn sounds when the engine oil pressure
approaches the shutdown range. The low oil pressure
warning does not function during first the 30 seconds
after startup.
Not in Auto (Generator Master Control Switches).
The fault lamp illuminates yellow and the alarm horn
sounds when the generator set button is in the RUN or
OFF/RESET mode.
Option Board 2X Communication Loss. The fault
lamp illuminates yellow and the alarm horn sounds
when the communication with option board 2X (A, B, or
C) has been lost.
Reserve Oil Empty. The fault lamp illuminates yellow
and the alarm horn sounds when the oil makeup kit level
has dropped below a threshold.
Speed Sensor Fault. The fault lamp illuminates yellow
and the alarm horn sounds when the speed signal is
absent for one second while the generator set runs.
Total Reactive Power Low. The fault lamp illuminates
yellow and the alarm horn sounds when the generator has
a loss of field condition due to insufficient reactive load
production to support real load. The output breaker trips.
2.6.6 System Fault Shutdown Lamp
With Digital Displays
The system FAULT lamp glows red, the alarm horn
sounds, and the unit shuts down to indicate a fault
shutdown under the following conditions. See Section
2.6.8, Controller Resetting procedure, for information on
resetting a system shutdown.
Note: Always identify and correct the cause of a fault
shutdown before
resetting the controller.
When the system shutdown lamp is on and no message
displays, rotate the dial to the Active Events menu.
Press the dial to view messages. Rotate the dial to view
additional messages. Press the OFF button to return to
themainmenu.
Use the Alarm Off button to silence the alarm horn at the
operator’s discretion. If the controller is setup for an
NFPA 110 application
, press the AUTO button before
silencing the alarm horn. The alarm horn cannot be
silenced unless the button is in the AUTO mode. See
Section 2.6.7 Status and Notice Digital Displays.
AC Sensing Lost (controller in AUTO and voltage
was previously present). The fault lamp illuminates
red, the alarm horn sounds, and the unit shuts down
when the controller does not detect the nominal
generator set AC output voltage for more than
3 seconds after crank disconnect.
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