TABLE V: PROPULSION SYSTEM COMPONENTS DESCRIPTION (Cont.)
REF.
NO.
COMPONENT FUNCTION
CT
34
Battery Boost Current
Transformer
Detects amount of current flow through the Alternator
tertiary winding. Signal turns off the AFSE battery circuit
when the tertiary winding voltage level is able to excite
the Alternator field.
CTR CT Voltage Limiting Resistor
Provides a resistive load for the CT.
DC link
38
DC Bus
The DC bus connects the Alternator output, Chopper
Module/Resistor Grid circuits, and Traction inverters.
DID
Diagnostic Information Display
(17FM558)
Provides maintenance personnel with the ability to
monitor the operational status of certain truck systems
and perform system diagnostic test.
DIGITAL I/O CARD
Digital Input/Output Card
(17FB104)
Receives contactor, relay and switch feedback signals
and provides drive signals to relays, contactors, indicator
lamps etc. (Located in PSC and TCI.)
DIT1A, 1B, 1C 43 DI/DT Transformers
Reduce current overshoots, or spikes in phase A, B, and
C power for Traction Motor 1.
DIT2A, 2B, 2C
42
DI/DT Transformers
Reduce current overshoots, or spikes in phase A, B, and
C power for Traction Motor 2.
FDP
24
Fault Detection Panel (17FM384)
Provides an output signal when a diode fails in the Main
Rectifier.
FDT 23
Fault Detection Transformer
(17ET33)
Monitors Alternator Field current for FDP operation.
FIBER OPTIC
ASSEMBLY
31 Fiber Optic Assembly
Provides volatage and electrical noise isolation for control
and feedback signals between the PSC and
Phase/Chopper Modules.
FP 39 Filter Panel (17FM460)
Filters electrical noise on 3 phases of Alternator output.
GDFU1, 2 1
Gate Driver Power Source Fuse
1 and 2
Provide overload protection for the Gate Drive Power
Supply.
GDPC1 17
Gate Drive Power Converter 1
(17FM670)
Converts 19 to 95 VDC from the Gate Drive Power
Supply to 25 kHz, 100 VRMS, square wave power to
drive Inverter 1 GTO Phase and Chopper Modules.
GDPC2 16
Gate Drive Power Converter 2
(17FM670)
Converts 19 to 95 VDC from the Gate Drive Power
Supply to 25 kHz, 100 VRMS, square wave power to
drive Inverter 2 GTO Phase and Chopper Modules.
GDPS 18
Gate Drive Power Supply
(17FM645)
Provides a 19 to 95 VDC output, at approximately 3kW,
from one of two input power sources; either the main
Alternator or the System Batteries.
GF 49
Alternator Field Contactor
(17CM53)
Connects the AFSE to the Alternator field.
GFCO 62
Generator Field Contactor
Cutout Switch
Disables Alternator output.
GFIP 22
Ground Fault Current Panel
(17FM363)
Reduces Alternator field voltage input to provide a low
voltage signal for use by the PSC. Used to provide
ground fault warning.
GFM 8 Gate Firing Module (17FM415)
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.
E02014 3/01 Electrical Propulsion System Components E2-43
To Next Page
