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DCA-150SSKII — PARTS AND OPERATION MANUAL— REV. #1 (05/08/01) — PAGE 29
DCA-150SSKII — CONTROL PANEL
The definitions below describe the controls and functions of
the DCA-150SSKII "
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 UNV 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, 600 amp main
breaker is provided to protect the UNV 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 a engine malfunction (fault),
has been detected. When a
fault has been detected the
MPEC will evaluate the fault
and all major faults will
shutdown the generator.
During
cranking cycle
, The MPEC will attempt to crank
the engine for 10 seconds before disengaging. If the
engine does not engage (start) by the third attempt, the
engine will be shut-down by the MPEC's " Over Crank
Protection" mode. If the engine engages at a speed (RPM's)
that is not safe, the MPEC will shut-down the engine by
initializing the "Over Speed Protection" mode.
Also the MPEC will shut-down 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.
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 be started a pre- programmed number of
times, and has failed to start. The number of cycles
and duration are programmable. It is pre-set at 3 cycles
with a 10 second duration. This is considered a
major
fault.
E. Overspeed Shutdown – Indicates that 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.
Figure 9. MPEC Module
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