PSC SOFTWARE FUNCTIONS
The operation of the AC Drive System is regulated by
a software program which resides in the Propulsion
System Control Panel’s memory. The software pro-
gram also contains instructions to test and fault isolate
the system.
This section describes the PSC software program and
its functions without regard to hardware.
INPUT PROCESSING
This function reads in all external inputs for use by the
PSC. The Input Processing function performs any
signal conditioning required and computes the re-
quired derived inputs.
STATE MANAGEMENT
State Machine
As part of the total software package, a particular
group of regulatory software commands is included
called a “state machine”. The state machine controls
the various functions of truck operation.
The software implements the state machine by keep-
ing track of which state the truck is in, and which state
the truck is allowed to move into if the operator re-
quests a different mode of operation. Each software
state is defined as follows:
Startup/Shutdown State:
The purpose of this state is to ensure the system is in
a desired known state upon startup or shutdown. This
is an unpowered state.
NOTE: Powered and unpowered refer to the state of
the DC link; 600 volts or more on the DC link equals
“powered”. 50 volts or less on the DC link equals
“unpowered”.
Test State:
The purpose of this state is to provide an environment
for the verification of system functionality. Test state
will support a variety of activities, including:
1. Waiting for the engine to start (if needed).
2. Automatic testing on initial system startup or
following rest state.
3. Application of power to the DC link.
4. Externally initiated testing to clear a fault, set
temporary variables, or for maintenance pur-
poses.
NOTE: The Test state may be either powered or
unpowered at a given point in time, depending on
which activities are being performed.
Ready State:
Ready state is the default powered state. The system
will be in this state whenever the engine and control
system are ready to provide power, but none is re-
quested.
Ready state also is the state where the DC link is
discharged in preparation for Shutdown, Rest, or in
reaction to certain event conditions. Therefore, Ready
state should not be considered strictly a powered state
(as are Propel and Retard described below).
Rest State:
Rest is an unpowered state whose purpose is to
conserve fuel while the truck idles for an extended
period of time. Rest state also provides an environ-
ment where maintenance personnel can control the
engine without causing power to be applied to the DC
link.
Propel State:
The purpose of this state is to provide the power
system configuration and overall environment for en-
gine-powered propulsion. This is strictly a powered
state, i.e., the system will not be allowed to maintain
propel state without sufficient power on the DC link.
E2-30
Electrical Propulsion System Components
E02014 3/01
Содержание 930E-2
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Страница 8: ...KOMATSU MODEL 930E Dump Truck A 4 Introduction A00017 03 01 ...
Страница 10: ...NOTES A1 2 Index A01001 2 94 ...
Страница 12: ...930E MAJOR COMPONENTS A2 2 Major Component Description A02055 ...
Страница 35: ...START HERE Walk Around Inspection A03017 General Safety and Operating Instructions A3 21 ...
Страница 46: ...NOTES A3 32 General Safety and Operating Instructions A03017 ...
Страница 78: ...NOTES B1 2 Index B01016 ...
Страница 88: ...NOTES B3 6 Dump Body B03013 03 01 ...
Страница 92: ...NOTES B4 4 Fuel Tank B04015 ...
Страница 94: ...NOTES C1 2 Index C01021 03 01 ...
Страница 118: ...NOTES C5 6 Air Filtration System C05013 5 98 ...
Страница 126: ...NOTES D2 6 24VDC Electric Supply System D02018 ...
Страница 142: ...NOTES D3 16 24VDC System Components D03019 04 01 ...
Страница 146: ...FIGURE 2 1 PROPULSION SYSTEM DIAGRAM E2 2 Electrical Propulsion System Components E02014 3 01 ...
Страница 191: ...FIGURE 2 3 ELECTRICAL CABINET FRONT VIEW E02014 3 01 Electrical Propulsion System Components E2 47 ...
Страница 192: ...FIGURE 2 4 ELECTRICAL CABINET TOP VIEW E2 48 Electrical Propulsion System Components E02014 3 01 ...
Страница 193: ...FIGURE 2 5 ELECTRICAL CABINET REAR FLOOR VIEW E02014 3 01 Electrical Propulsion System Components E2 49 ...
Страница 196: ...NOTES E2 52 Electrical Propulsion System Components E02014 3 01 ...
Страница 240: ...NOTES E3 44 AC Drive System Electrical Checkout Procedure 3 01 E03015 Release 17 Software ...
Страница 242: ...NOTES G1 2 Index G01017 ...
Страница 250: ...NOTES G2 8 Tires and Rims G02015 ...
Страница 274: ...NOTES H1 2 Index H01013 04 01 ...
Страница 282: ...NOTES H2 8 Front Suspensions H02013 2 01 ...
Страница 288: ...NOTES H3 6 Rear Suspensions H03013 ...
Страница 334: ...NOTES J3 32 Brake Circuit Component Service J03019 1 99 ...
Страница 378: ...NOTES L2 8 Hydraulic System L02028 ...
Страница 401: ...FIGURE 4 5 FLOW AMPLIFIER VALVE L04031 Steering Circuit L4 7 ...
Страница 403: ...FIGURE 4 6 FLOW AMPLIFIER NO STEER L04031 Steering Circuit L4 9 ...
Страница 405: ...FIGURE 4 7 FLOW AMPLIFIER LEFT STEER L04031 Steering Circuit L4 11 ...
Страница 407: ...FIGURE 4 8 FLOW AMPLIFIER RIGHT STEER L04031 Steering Circuit L4 13 ...
Страница 409: ...FIGURE 4 9 FLOW AMPLIFIER NO STEER EXTERNAL SHOCK LOAD L04031 Steering Circuit L4 15 ...
Страница 414: ...NOTES L4 20 Steering Circuit L04031 ...
Страница 422: ...NOTES L5 8 Steering Control Unit L05021 ...
Страница 429: ...L06021 Steering Circuit Component Repair L6 7 ...
Страница 450: ...NOTES L6 28 Steering Circuit Component Repair L06021 ...
Страница 466: ...NOTES L7 16 Hoist Circuit L07023 ...
Страница 492: ...NOTES L9 6 Hydraulic System Filters L09008 ...
Страница 504: ...NOTES L10 12 Hydraulic Check out Procedure L10012 ...
Страница 508: ...NOTES M1 2 Index M01034 03 01 ...
Страница 518: ...NOTES M2 3 10 Ansul Checkfire Electric Detection and Actuation System M02003 ...
Страница 524: ...NOTES M5 4 Wiggins Quick Fill Fuel System M05002 10 96 ...
Страница 532: ...NOTES M8 8 Special Tools M08012 9 99 ...
Страница 560: ...NOTES M9 28 Air Conditioning System M09010 6 97 for HFC 134a Refrigerant ...
Страница 575: ...ALTERNATOR PARTS Refer to previous page for Parts List M13003 04 01 Niehoff Alternator Overhaul Manual M13 5 ...
Страница 618: ...M20 20 Payload Meter II M20007 10 00 ...
Страница 619: ...M20007 10 00 Payload Meter II M20 21 ...
Страница 627: ...M20007 10 00 Payload Meter II M20 29 ...
Страница 634: ...NOTES N1 2 Index N01020 03 01 ...
Страница 654: ...NOTES N3 6 Cab Components N03011 7 98 ...
Страница 660: ...NOTES N4 6 Operator Comfort N04020 ...
Страница 686: ...NOTES N5 26 Operator Cab Controls N05044 ...
Страница 688: ...NOTES P1 2 Index P01024 ...
Страница 691: ...P02034 Lubrication and Service P2 3 ...
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Страница 737: ...NOTES R1 2 930E Schematics R01048 with Cummins QSK60 Series Engine ...
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