Onan 200 DFP - Page 27

Droop Adjustment - Isochronous Operation
For isochronous operation, the droop potentiometer
must be turned fully counterclockwise and will not
require any further adjustment.
Gain Adjustment
1. Close the main line circuit breaker and apply
approximately 1 /4 of the rated load.
2. Make sure the engine speed is constant. If the
engine speed is constant, turn the GAIN potentiome¬
ter clockwise slowly until the engine speed is not
constant.
a. Slowly turn the potentiometer counterclockwise
until a constant speed is achieved. Turn the
potentiometer counterclockwise an additional
1 /2 division.
Fine Speed Adjustment
After the gain adjustment is made, the full load governed
engine speed may require a minor adjustment to equal
the desired speed (i.e. 60 Hz, 1800 RPM or 50 Hz, 1500
RPM). Use the SPEED ADJUST potentiometer on the
engine instrument panel for fine speed adjustments of
less than ±100 RPM.
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