Komatsu 930E-2 Shop Manual page 190

TABLE V: PROPULSION SYSTEM COMPONENTS DESCRIPTION (Cont.)
REF.
NO.
TCI
TH1 54
VAM1 46
VAM2 46
E2-46
COMPONENT
Truck Control Interface
(17FL373)
Alternator Field Thyrite (Varistor)
Voltage Attenuation Module
(17FM702)
Voltage Attenuation Module
(17FM702)
Electrical Propulsion System Components
FUNCTION
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 PSC.
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 PSC.
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