System Fault Shutdown Lamp With Digital Displays - Kohler 6EKOD Service Manual

7.10.6 System Fault Shutdown Lamp
With Digital Displays
The system FAULT lamp flashes red and the unit shuts
down to indicate a fault shutdown under the following
conditions. See Section 7.10.2, Controller Resetting
procedure, for information on resetting a system
shutdown.
Note: Text shown in italics in this section of the manual
represents digital display messages.
AC Sensing Loss. The fault lamp flashes red 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. The controller displays
AC Sens Loss Low Shutdwn.
Auxiliary Input (Shutdown). The fault lamp flashes
red and the unit shuts down when an auxiliary inputs
signals the controller. Use SiteTecht software to define
inputs as shutdowns. The local display shows Aux Input
Shutdwn.
Engine Over Speed. The fault lamp flashes red and the
unit shuts down immediately when the governed
frequency on 50 and 60 Hz models exceeds the over
speed setting. The local display shows Eng Speed High
Shutdwn.
Engine Under Speed. The fault lamp flashes red, the
alarm horn sounds, and the unit shuts down immediately
when the governed frequency on 50 and 60 Hz models
drop below the underspeed setting. The local display
shows Eng Speed Low Shutdwn.
High Coolant Temperature. The fault lamp flashes red
and the unit shuts down because of high engine coolant
temperature. The high coolant temperature shutdown
does not function during the preset inhibit time delay
period after startup. The local display shows Coolnt
Temp High Shutdwn.
Note: The high engine temperature shutdown function
and the low seawater pressure shutdown
function are independent.
pressure condition may not activate the high
engine temperature switch.
High Exhaust Temperature. The fault lamp flashes red
and the unit shuts down because of high exhaust
temperature. The local display shows Exh Temp High
Shutdwn.
62 Section 7 Controller
Locked Rotor (failed to crank). If none of the speed
sensing inputs show engine rotation within the preset
time delay of initiating engine cranking, the ignition and
crank circuits turn off for the preset period and the cycle
repeats. The fault lamp flashes red and the unit shuts
down after the second cycle of the preset period of
cranking.
Shutdown.
Low Seawater Pressure. The fault lamp flashes red
and the unit shuts down because of low seawater
pressure.
seawater pressure is detected. Local display shows
Sea Pressure Low Shutdwn.
Low Oil Pressure. The fault lamp flashes red and the
unit shuts down because of low oil pressure. The
shutdown occurs 10 seconds after the low pressure
condition is detected. The low oil pressure shutdown
does not function during the first 15 seconds after
startup. The local display shows Oil Press Low
Shutdwn.
Overcrank. The fault lamp flashes red and cranking
stops when the unit does not start within the defined
cranking period. The local display shows Over Crank
Shutdwn. See Section 7.5.2, Starting the Generator Set
and
Specifications for cyclic crank specifications.
Note: The controller is equipped with an automatic
Overfrequency. The fault lamp flashes red and the unit
shuts down when the frequency is above the
overfrequency setting. The local display shows Freq
High Shutdwn. See Figure 7-18.
A low seawater
Figure 7-18 Overfrequency Specs
The local display shows Locked Rotor
Shutdown occurs 5 seconds after low
Section 7.10.1,
restart function. When speed drops below 25 Hz
(750 rpm) while the engine is running, the unit
attempts to recrank. The unit then follows the
cyclic cranking cycle and, when the engine fails to
start, will shut down on an overcrank fault
condition.
Overfrequency
Setting Range Time Delay
102%--140% of nominal
Status Event and Fault
Overfrequency
Default Setting
10 sec. 110% of nominal
TP-6774 2/14a