Method 2 : Start the engine and control at an idle speed for a period of time prior to accelerating to
the operating speed. This method separates the starting process so that each may be
optimized for the lowest smoke emissions.
Replace the connection between Terminals M & G with a switch, usually an oil pressure
switch. Start the engine. If the starting smoke is excessive, the STARTING FUEL may
need to be adjusted slightly CCW. If the starting time is too long, the STARTING FUEL
may need to be adjusted slightly CW.
When the switch opens, adjust the SPEED RAMPING for the least amount of smoke
when accelerating from idle speed to rated speed.
•
Idle speed setting
If the IDLE speed setting was not adjusted as detailed in "Starting Fuel Adjustment" section, then
place the optional external selector switch in the IDLE position. The idle speed set point is increased
by clockwise rotation of the IDLE adjustment control. When the engine is at idle speed, the speed
control unit applies droop to the governor system to insure stable operation
•
Speed droop operation
Droop is typically used for the paralleling of
engine driven generators.
Place the optional external selector switch in
the DROOP position, DROOP is increased by
clockwise rotation of the DROOP adjustment
control. When in droop operation, the engine
speed will decrease as engine load
increases. The percentage of droop is based
on the actuator current change from engine
no load to full load. A wide range of droop is
available with the internal control. Droop level
requirements above 10% are unusual.
If droop levels experienced are higher or
lower than those required, contact the factory
for assistance.
After the droop level has been adjusted, the
rated engine speed setting may need to be
reset. Check the engine speed and adjust the
speed setting accordingly.
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EC8OM009
SPEED
TIME
Set speed
No load
Load up
Full load
Adjust the DROOP adjustment
DROOP width
(Below 10% of the set-speed)
Figure 3. The relation between the speed
and a amount of load.
