Club Car 1996 DS Golf Car Gasoline, Service Manual

Page: 408 / 544

Page 21-16
21A
E
THE POWER CIRCUIT
During normal vehicle operation, the function of the power circuit is to supply electrical current from the bat-
tery pack to the motor. When motor braking is activated, the power circuit will direct motor generated current
to either the batteries or the energy displacement module, depending on the battery pack state of charge
(See Figure 21-17).
The Power Circuit consists of:
1. The battery pack (six eight-volt batteries).
2. The electric motor armature circuit.
3. The electric motor field circuit.
4. The solid state speed controller.
5. The main solenoid contacts.
6. The dynamic braking solenoid contacts.
7. The energy displacement module.
8. All six-gauge power wires.
BATTERIES
See Section 22 in this manual.
SOLID STATE SPEED CONTROLLER
Unlike other speed control systems which control vehicle ground speed by varying the amount of voltage to
the motor, the PowerDrive Plus solid-state controller always supplies 48 volts to the motor. It regulates vehi-
cle ground speed by lengthening or shortening voltage pulses to the motor. The lengths of the pulses corre-
spond to accelerator pedal position and change accordingly.
The PowerDrive Plus solid-state speed controller also changes forward/reverse direction of vehicle travel.
When the forward and reverse rocker switch setting is changed, the speed controller changes the direction of
electrical current through the motor - changing the direction that the motor turns and thus forward/reverse
movement of the vehicle.
FIGURE 21-16
FORWARD /
REVERSE
SWITCH
REVERSE
BUZZER
REVERSE
BUZZER CIRCUIT
ORANGE
CONTROLLER
SOLENOID
F
R
4
5 6
RED
BLACK
RED
RED
ORANGE
BLACK
BLACK
ORANGE
B-