Komatsu 930E-2 Shop Manual page 188

TABLE V: PROPULSION SYSTEM COMPONENTS DESCRIPTION (Cont.)
REF.
NO.
GFR 52
GFRS
GRR 26
INV1 TMC CARD
INV2 TMC CARD
I1CO 57
I2CO 58
KEYSW
LDBXI 48
LEDP 60
LINKI 7
LINKV 3
L1, 2, 3
M1, 2
E2-44
COMPONENT
Alternator Field Relay (17LV66)
Alternator Field Relay Coil
Suppression Module
Ground Resistor Panel
Inverter 1 Central Processing
Unit Card and Input/Output Card
(17FB172)
Inverter 2 Central Processing
Unit Card and Input/Output Card
(17FB172)
Inverter 1 Cut Out Switch
Inverter 2 Cut Out Switch
Key Switch
Load Box Current Sensing
Module
Light Emitting Diode Panel
Link Current Sensing Module
Link Voltage Measuring Module
(17FM458)
Cabinet Lights
Motorized Wheels (5GDY85)
Electrical Propulsion System Components
FUNCTION
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.
Detects power circuit grounds.
Generates Phase Module turn-on/turn-off commands for
the Inverter 1.
Monitors voltages and currents from various areas for
Inverter 1. Monitors Traction Motor 1 speed.
Generates Phase Module turn-on/turn-off commands for
the Inverter 2.
Monitors voltages and currents from various areas for
Inverter 2. Monitors Traction Motor 2 speed.
Cuts out inverter 1 when in the "cutout" position. Located
on switch/LED panel, left front corner of electrical cabinet.
Cuts out inverter 2 when in the "cutout" position. Located
on switch/LED panel, left front corner of electrical cabinet.
Connects battery voltage to CPR and control circuits
when closed. (Located on instrument panel.)
Monitors current during load box test.
LED's indicate status of the following:
CPR: Illuminated when CPR is energized.
SYS RUN: Illuminated when the PSC power-up
sequence has completed successfully and control logic is
executing.
NAFLT: When illuminated, indicates a fault has occurred
that prevents propulsion or retarding.
TEST: Illuminated when system is in the Test state.
REST: Illuminated when system is in Rest state and there
is essentially no voltage on the DC link.
Detects amount of current flow through the DC link.
Attenuates the high voltage from the DC link to a level
acceptable to the electronics on the Analog I/O card in
the PSC.
Provide interior cabinet illumination.
Each Motorized Wheel consists of a Traction Motor and a
Transmission Assembly. The 3-phase asynchronous
Traction Motors convert electrical energy into mechanical
energy. This mechanical energy is transmitted to the
wheel hub through a double reduction gear train
(Transmission).
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