Hobart 9OC24S Operation Manual page 211

FOBART
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QD
;MOTOR GENERATOR DIVISION
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2 HOBART BROTHERS COMPANY
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Q. B.0 '8
OPERATION, MANIENANCE, AND OVERHAUL MANUAL, TM-240A
SELF-PROPELLED GENERATOR SET, SPEC. NO. 5381A
Terminal #8 (Input, anytime switch is ON) (approx.)
Terminal #9 (approx.)
Terminals #9 to #lO (approx.)
Terminals $3 to #4 (on speed, no load)
(Input to actuator)
Terminals #3 to #4 (on speed, full load)
12. V DC
8. to 10. V DC
1.5 V DC
2. to 4. V DC
0.5Vto l.OVDC
H IGHER than NO
LOAD value.
Terminals #5 to #6 (Magnetic pickup
input at box; leads connected, idle speed)
2. V AC minimum
(Note: Values will increase with increased engine speed.)
Magnetic pickup output.
(leads disconnected from
box. Idle speed.)
6. VAC minimum
WARNING: NEVER DISCONNECT MAGNETIC PICKUP LEADS WHEN THE
ENGINE IS RUNNING AT GOVERNED SPEED.
._
Electric Governor Voltage Values
Figure 5
D. Lighting System
Instrument panel lights (lW, 2W, and 3W) are operated by the 12-V DC system
and controlled by a toggle switch (4s).
Th' IS system is also protected
by a 20-
ampere fuse (4FU). Headlights are controlled by another toggle switch (7s) and
protected by a 20-ampere fuse (5FU).
E.
Protective Monitor System (12-V DC)
The AC generator protective monitor system is mentioned here only because it re-
ceives all of its operating power from the engine 12-V DC electrical system. A
capacitor (7CAP, Fig. 2) is located in this system to suppress any random inductive
peak voltages which might enter the protective monitor module. A diode (5REC)
provides a "fly-back" path to specifically discharge induced voltage in the fuse-
interlock relay coil.
Theory of operation for the protective monitor system is covered in Para. 3, D, (1)
thru (3).
Ott 30/73 3-l
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