Komatsu 830E-AC Shop Manual page 425

Table 5: PROPULSION SYSTEM COMPONENTS DESCRIPTION
FIG.
NO.
R1
SS1, 2
SYS CPU Card
TCI
TH1
VAM1
VAM2
VAM3
VAM4
E02020 10/06
COMPONENT
2-5 Battery Boost Resistor
Traction Motor Speed Sensors
System Central Processing Unit
Card
Truck Control Interface
2-5 Alternator Field Thyrite (Varistor)
2-3 Voltage Attenuation Module
2-3 Voltage Attenuation Module
2-6 Voltage Attenuation Module
2-5 Voltage Attenuation Module
Electrical Propulsion System Components
FUNCTION
Limits surge current in the Alternator field circuit when
GFR contacts first close.
Each speed sensor provides two output speed signals,
proportional to the Traction Motor's rotor shaft speed.
Provides control of propulsion and dynamic retarding
functions, battery backed RAM, real-time clock,
downloadable code storage, and an RS422 serial link.
Is a part of the ICP Panel. Provides the main interface
between the various truck systems, controls, and
equipment and is used in conjunction with the DID by
maintenance personnel.
Discharges the Alternator field when the AFSE is first
turned off.
Attenuates the three high voltage outputs applied to each
phase winding of Traction Motor 1 to a level acceptable
for use by the Analog I/O card in the ICP.
Attenuates the three high voltage outputs applied to each
phase winding of Traction Motor 2 to a level acceptable
for use by the Analog I/O card in the ICP.
Attenuates the high voltage outputs between the main
alternator and the rectifier panel, and between the rectifier
panel and the inverters to a level acceptable for use by
the Analog I/O card in the ICP.
Attenuates the high voltage outputs between the AFSE
and the main alternator to a level acceptable for use by
the Analog I/O card in the ICP.
E2-41