Komatsu 830E-AC Shop Manual page 423

Table 5: PROPULSION SYSTEM COMPONENTS DESCRIPTION
FIG.
NO.
CM11A - 12C
CM21A - 22C
CPR
CPRD
CPRS
CPS
DCN BUS/DCP BUS
DID
DIGITAL I/O CARD
FDR
FIBER OPTIC
ASSEMBLY
FP
GDPC1
GDPC2
GF
GFBR
GFCO
GFM1, 2
GFR
GFRS
GFS
GRR
GRR9, 10
E02020 10/06
COMPONENT
Current Sensing Modules, Phase
1A, 1B and 1C
Current Sensing Modules, Phase
2A, 2B and 2C
2-4 Control Power Relay
2-4 Dual Diode Module
2-4 Control Power Relay
Suppression Module
2-4 Control Power Switch
2-6 DC Link (-) and (+) Bus
Diagnostic Information Display
Digital Input/Output Card
2-6 Filter Discharge Resistor
Fiber Optic Assembly
2-6 Filter Panel
2-4 Gate Driver Power Converter 1
2-4 Gate Driver Power Converter 2
2-5 Alternator Field Contactor
2-4 Resistor
2-4 Generator Field Contactor Cutout
Switch
Gate Firing Module
2-5 Alternator Field Relay
2-5 Alternator Field Relay Coil
Suppression Module
2-5 Suppression Module
2-6 Ground Resistor Panel
2-4 Resistors
Electrical Propulsion System Components
FUNCTION
Detects amount of current flow through the A, B and C
phases of Traction Motor 1.
Detects amount of current flow through the A, B and C
phases of Traction Motor 2.
Picks up when the Key Switch and Control Power Switch
are closed.
Allows two separate voltages to control the CPR coil.
Suppresses voltage spike when CPR coil is de-energized.
Energizes CPR coil.
The DC bus connects the Alternator output, Chopper
Module/Resistor Grid circuits, and Traction inverters.
Provides maintenance personnel with the ability to
monitor the operational status of certain truck systems
and perform system diagnostic test.
Receives contactor, relay and switch feedback signals
and provides drive signals to relays, contactors, indicator
lamps, etc. Located in PSC and TCI.
Resistor divider network connected across the DC link,
provides secondary discharge link for the DC link. Normal
discharge is through RP1.
Provides voltage and electrical noise isolation for control
and feedback signals between the PSC and Phase/
Chopper Modules.
Filters electrical noise on 3 phases of Alternator output.
Converts 19 to 95 VDC from the Gate Drive Power Supply
to 25 kHz, 100 VRMS, square wave power to drive
Inverter 1 IGBT Phase and Chopper Modules.
Converts 19 to 95 VDC from the Gate Drive Power Supply
to 25 kHz, 100 VRMS, square wave power to drive
Inverter 2 IGBT Phase and Chopper Modules.
Connects the AFSE to the Alternator field.
Provides a small load across the contactor feedbacks to
help keep the contactors clean.
Disables Alternator output.
Receives pulses from the Analog I/O card in the PSC,
amplifies the pulses, and then splits the pulses to drive
two SCR circuits in the AFSE. Located on AFSE panel.
Picks up with GF contactor and applies B+ to the AFSE
(battery boost) during initial acceleration phase.
Suppresses voltage spikes when GF coil is de-energized.
Suppresses voltage spikes in coil circuit when GF
contactor is de-energized.
Detects power circuit grounds.
Used with GRR to detect power circuit grounds.
E2-39