Polaris GEM E Series, Service Manual

Page: 51 / 174

ELECTRICAL 5 - 4
November 2007 GEM Service Manual
DRIVE SYSTEM
DESCRIPTION
Fig. 3 Drive System
The drive system consists of the main contactor,
motor controller, DC motor, state of charge
indicator, tachometer, accelerator foot pedal, drive
mode switch, main wiring harness and other
associated wiring.
OPERATION
The drive system is powered by the 72 VDC
generated by the batteries. If the main contactor is
closed, the motor controller provides drive voltage
to the motor based on inputs from the drive mode
switch, motor tachometer, and the accelerator foot
pedal position. The position of the drive mode
switch determines vehicle direction. The variable
speed, reversible, DC motor supplies mechanical
drive power. Power and drive system operation is
monitored by the motor controller; status
information is displayed on the LCD display.
The basic operation procedures described in the
Owner's Manual must be followed for the drive
system to operate properly. If the drive system
does not operate, verify the following steps have
been completed:
•
Master disconnect switch (see figure 4) is
shown in the ON position.
•
Batteries are charged, but the battery charger is
not plugged in.
•
Parking brake has been released.
•
Key switch (see figure 5, item 6) is in the ON
position.
•
After turning the key switch on, the vehicle drive
mode switch (see figure 5, item 5) has been
placed in DRIVE LOW, DRIVE HIGH, or
REVERSE.
Fig. 4 Master Disconnect Switch
Fig. 5 Instrument Pod
1 - Turn Signal Lever/Windshield Wiper Switch/Horn Button
2 - Light Switch
3 - LCD Display
4 - Trip Reset Button
5 - Vehicle Drive Mode Switch
6 - Key Switch