7-3
Optional Remote Control (A2, A3)
The remote control is an optional accessory that al-
lows the genset to be started, monitored, and
stopped from a remote location. The deluxe control
(A3) includes a running time meter and a battery
condition meter. Remote control panels are
mounted inside the vehicle.
Rectifier Bridge (CR1) – Spec A Only
The rectifier bridge consists of four diodes con-
nected in a bridge circuit to form a full-wave voltage
rectifier. The bridge circuit rectifies the AC voltage
from the generator battery winding (B1-B2) to sup-
ply DC voltage for battery charging.
Battery Charge Resistor (R1) – Spec A
Only
The battery charge resistor limits the battery charge
rate to a maximum of one ampere.
Battery Charger Assembly (VR2)
– Begin Spec B 50 Hz Only
The battery charger assembly rectifies the AC volt-
age from the generator battery winding (B1-B2) to
supply DC voltage for battery charging.
Transformer (T1)
– Begin Spec B 50 Hz Only
The transformer provides isolation required for
some 50 Hz reconnection applications. (See Figure
6-2 on Page 6-3 for transformer location.)
CONTROL OPERATION
The schematic diagrams in Section
12. Wiring
Schematic/Diagram
can be used to help follow the
circuit description. Always refer to the specific wir-
ing diagram that corresponds to the model and spec
number of the genset when troubleshooting.
Start Mode
Holding the Start/Stop switch (S1) in the Start posi-
tion activates the control assembly (A1) by closing
the start signal input circuit. While the Start/Stop
switch is held, the control assembly supplies the fol-
lowing outputs and results:
• Energizes the start solenoid (K1) causing the
start solenoid contacts to close energizing the
starter. The starter begins to crank the engine
to initiate starting.
• Energizes the fuel pump (E2), the fuel pump
begins pumping fuel to the carburetor for en-
gine operation.
Begin Spec B models: the fuel shutoff solenoid
E3 is energized allowing fuel to pass through
the carburetor.
LPG models: the fuel shutoff solenoid (E2) and
priming solenoid (K3) are energized to allow
fuel flow to the carburetor.
• Flashes the generator field winding to ensure
that there is adequate magnetism to induce
generator voltage buildup.
• Enable the ignition circuit, this opens a ground
path through the control assembly to the mag-
neto assembly (G2) so output from the magne-
to will energize the ignition coil (T1). The igni-
tion coil energizes the spark plug (E1) for igni-
tion.
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