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DCA-180SSK — PARTS AND OPERATION MANUAL— REV. #3 (06/11/09) — PAGE 31
DCA-180SSK — CONTROL PANEL
The definitions below describe the controls and functions of the
DCA-180SSK "
Control Panel
" (Figure 8).
1. Frequency Meter – Indicates the output frequency in hertz
(Hz). Normally 60 Hz ±1 Hz .
2. AC Ammeter – Indicates the amount of current the load is
drawing from the generator.
3. Ammeter Change-Over Switch – This switch allows the
AC ammeter to indicate the current flowing to the load
connected to any phase of the output terminals, or to be
switched off.
4. AC Voltmeter – Indicates the single phase output voltage
present at the UVW terminals.
5. Voltmeter Change-Over Switch – This switch allows the
AC voltmeter to indicate phase to phase voltage between
any two phases of the output terminals or to be switched off.
6. Pilot Lamp – Indicates that the generator is working
properly.
7. Main Circuit Breaker – This three-pole, 500 amp main
breaker is provided to protect the UVW voltage output
terminals from overload.
8. Voltage Regulator Control – Allows manual adjustment
of the generator’s output voltage.
9. Panel Light – Normally used in dark areas or at night time.
When activated, panel lights will illuminate. When the
generator is not in use be sure to turn the panel light switch
to the OFF position.
10. Panel Light Switch – When activated will turn on control
panel light.
11. MPEC – Microprocessor Engine Control Module –
(MPEC) has a vertical row of status LED's (Figure 9), that
when lit, indicate that an
engine malfunction (fault), has
been detected. When a fault
has been detected the MPEC
will evaluate the fault and if the
fault is major will shutdown the
generator.
A. Off/Manual/Auto Switch – This switch controls the
running of the generator. If this switch is left in the
"OFF" position, the generator will not run. When this
switch is set to the
manual
position, the generator
will start immediately.
If the generator is to be connected to a building's AC
power source via a transfer switch (isolation), place
the switch in the
auto
position. In this position the
generator will monitor the AC line output from the
building's power source.
B. Low Oil Pressure – Indicates the engine pressure
has fallen below 15 psi. The oil pressure is detected
using variable resistive values from the oil pressure
sending unit. This is considered a
major
fault.
C. High Coolant Temperature – Indicates the engine
temperature has exceeded 215
F. The engine
temperature is detected using variable resistive
values from the temperature sending unit. This is
considered a
major
fault.
D. Overcrank Shutdown – Indicates the unit has
attempted to start a pre- programmed number of
times, and has failed to start. The number of cycles
and duration are programmable. Typical
programmable start settings is 3 cycles with a 10
second duration .This is considered a
major
fault.
E. Overspeed Shutdown – Indicates the engine is
running at an unsafe speed. This is considered a
major
fault.
F. Engine Running – Indicates that engine is running
at a safe operating speed.
12. High Idle Adjust Trimmer – Use this trimmer to adjust the
engine speed.
If the engine does not engage (start) by the third attempt, the
engine will be shutdown by the MPEC's " Over Crank Protection"
mode. If the engine engages at a speed (RPM's) that is not safe,
the MPEC will shutdown the engine by initializing the "Over
Speed Protection" mode.
Also the MPEC will shutdown the generator in the event of low oil
pressure, high coolant temperature, low coolant level, and loss
of magnetic pickup. These conditions can be observed by
monitoring the LED status indicators on the front of the MPEC
module.
During
cranking cycle
, The MPEC will attempt to crank the
engine for 10 seconds before disengaging.
Figure 9. MPEC Module