The yellow fault alarm indicator (26) FLASHES when
the GSC+ detects an alarm fault. The alarm fault
does not cause the engine status to change. The
engine can be started. The engine will continue
operating only if the engine is running at the time of
the alarm fault. Fault alarm indicator (26) is
accompanied by an alarm fault code that is shown on
the upper display (29) when the alarm codes key (30)
is pressed. For the descriptions of the fault codes,
refer to the Systems Operation, Testing and
Adjusting, RENR2484, “Electronic Modular Control
Panel II + (EMCP II+)”.
The red fault shutdown indicator (25) FLASHES
when the GSC+ detects a shutdown fault. The engine
will shut down if the engine is running. The engine
will not be allowed to start. Fault shutdown indicator
(25) is accompanied by a fault code that is
immediately shown on the upper display (29). For the
descriptions of the fault codes, refer to the Systems
Operation, Testing and Adjusting, RENR2484,
“Electronic Modular Control Panel II + (EMCP II+)”.
The yellow spare fault indicators (28) can be used for
paralleling as a redundant sync check. During the
paralleling process and before the circuit breaker is
closed, the lamps will indicate if the generator is in
sync with the bus. The spare fault indicators are
listed below.
• generator voltage match (spare 1 indicator)
• generator frequency match (spare 2 indicator)
• generator phasing match (spare 3 indicator)
If the generator parameters are not matched to the
bus, the associated lamp will flash. When the
generator and bus voltages, frequencies and phases
are in sync, the lamps will light continuously.
When the control panel is not in a paralleling mode,
the same three spare fault indicators (28) can be
programmed by the customer. The three spare faults
can be programmed to show coolant loss, oil
temperature, spare fault condition, or no assignment.
The yellow spare fault indicators (28) FLASH when
the conditions that are associated with that spare
fault are active. The yellow fault alarm indicator (26)
or the red fault shutdown indicator (25) will
accompany the spare fault indicators (28). The spare
fault indicators will tell whether the spare fault input is
programmed to be an alarm condition or a shutdown
condition. For the descriptions of the fault codes,
refer to the Systems Operation, Testing and
Adjusting, RENR2484, “Electronic Modular Control
Panel II + (EMCP II+)”.
The red dedicated shutdown indicators (27)
represent the following shutdown faults: low oil
pressure, emergency stop, high water temperature,
engine overspeed, and engine overcrank. When the
GSC+ detects a fault in one of these areas, the
dedicated shutdown indicator corresponding to the
fault FLASHES. The engine is shut down if the
engine is running, and the engine is not allowed to
start. No fault codes are associated with the
dedicated shutdown indicators because each
indicator has a descriptive label.
Many of the dedicated shutdown faults depend on
certain setpoints in the GSC+. For the descriptions of
the fault codes, refer to the Systems Operation,
Testing and Adjusting, RENR2484, “Electronic
Modular Control Panel II + (EMCP II+)”.
The conditions that are required to activate the
dedicated fault shutdowns and the results of each
dedicated fault are in the following list.
Low Oil Pressure – The engine oil pressure drops
below the setpoints for low oil pressure shutdown
that are programmed into the GSC+. There are two
low oil pressure setpoints. One setpoint is used when
the engine is at idle speed. The other setpoint is used
when the engine is at rated speed. When a low oil
pressure fault occurs, the low oil pressure indicator
FLASHES, and the engine is shut down. The engine
is not allowed to start until the fault is corrected.
Emergency Stop – The operator presses the
Emergency Stop Push Button (ESPB) on the front
panel. When an emergency stop condition occurs,
the emergency stop indicator FLASHES and the
engine is shut down. The engine is not allowed to
start until the condition is corrected.
High Water Temperature – The engine coolant
temperature rises above the setpoint for high water
temperature shutdown that is programmed into the
GSC+. When the high water temperature fault
occurs, the high water temperature indicator
FLASHES. The engine is shut down and the engine
is not allowed to start until the fault is corrected.
Engine Overspeed – The engine speed exceeds the
setpoint for engine overspeed that is programmed
into the GSC+. When the engine overspeed fault
occurs, the engine overspeed indicator FLASHES.
The engine is shut down and the engine is not
allowed to start until the fault is corrected.
Overcrank – The engine does not start within the
setpoint for total cycle crank time that is programmed
into the GSC+. When the overcrank fault occurs, the
overcrank indicator FLASHES. The engine is not
allowed to start until the fault is corrected.
SEBU7125-13
55
Operation Section
If Equipped
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