Hobart 9OC24S Operation Manual page 209

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$MOTOR GENERATOR DIVISION
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G HOBART BROTHERS COMPANY
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OPERATION, MAINTENANCE, AND OVERHAUL MANUAL, TM-240A
SELF-PROPELLED GENERATOR SET, SPEC. NO. 5381A
At no-load, the governor will control engine speed with a control box
output (actuator input) of 2 V to 4 V DC. At full load, the voltage-will
be 0.5 V to 1.0 V DC higher than no load value. Response time and
stability of the system are adjustable by two potentiometers identifie'd
as "GAIN" and "RESET-DROOP" controls cn the electric control box
(Ref. 2-3, Fig. 12). Adiustment of these controls is covered in 2-3, Para.
3, E, (4). Electric governor voltage values are contained in Figure 5.
(2) Excitation-deenergization circuit
The purpose of this circuit is to supply 12-V DC power through the two:position
switch (3s) for closing the excitation-deenergization relay (EDR) and maintain-
ing it in closed position to supply AC power to the voltage regulator (REG),
and DC power to the GOVERNOR CONTROL BOX in GEN mode.
1 ) SLIDE DIRECTION - ADJUSTING SCREW ROTATION
SLIDE SHOWN AT
- CW - INCREASE VOLTAGE
MAXIMUM VOLTAGE
AND ENGINE SPEED.
AND ENGINE SPEED
POSITION
- CCW - DECREASE VOLTAGE
AND ENGINE SPEED.
ELECTRIC
CO NTRO L BOX
TERMINALS
9
10 11
Governor Speed Setting Potentiometer Schematic
Figure 3
- _.--.-__-~
3-l