- General Electric Computer Accessories User Manual

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Contents Innovation Series Medium Voltage GP Type – G Drives GEH-6385
LAN Signal Map.......................................................................................................3-38
Motor Control Functions..................................................................................................3-44
Motor Control Overview ...........................................................................................3-44
Flux Curve................................................................................................................3-45
Leakage Inductance Curve ........................................................................................3-46
Line Transfer ............................................................................................................3-46
Motor Equivalent Circuit...........................................................................................3-48
Motor Temperature Estimation..................................................................................3-49
Power Dip Protection................................................................................................3-49
Tach Loss Detection..................................................................................................3-50
Protective Functions ........................................................................................................3-52
Custom User Faults...................................................................................................3-52
DC Link Protection ...................................................................................................3-52
Ground Fault Protection (Fast) ..................................................................................3-54
Hardware Fault Strings .............................................................................................3-55
Heatsink Thermal Protection .....................................................................................3-56
Line-Line Voltage Protection ....................................................................................3-58
Motor Overtemperature Detection .............................................................................3-59
Phase Current Protection ...........................................................................................3-60
Timed Overcurrent Detection ....................................................................................3-61
Transformer Overtemperature Detection....................................................................3-65
Motor Ground Protection ..........................................................................................3-66
Phase Imbalance Monitor ..........................................................................................3-68
Line Monitor.............................................................................................................3-70
Phase Lock Loop ......................................................................................................3-72
Sequencer Functions........................................................................................................3-74
Sequencer Overview .................................................................................................3-74
Fault Reset Logic......................................................................................................3-74
Sequencer Permissives ..............................................................................................3-76
Stopping Commands and Modes ...............................................................................3-78
Sequencer Commands...............................................................................................3-82
Sequencer Status.......................................................................................................3-85
Main Contactor Configuration...................................................................................3-87
Speed Reference Functions ..............................................................................................3-89
Critical Speed Avoidance..........................................................................................3-89
Local Speed Reference..............................................................................................3-90
Minimum Speed Limit ..............................................................................................3-91
Remote Speed Reference...........................................................................................3-92
Speed Reference Generation .....................................................................................3-93
Speed Reference Ramp .............................................................................................3-94
Speed Reference Reverse ..........................................................................................3-97
Speed/Torque Control Functions......................................................................................3-99
Droop .......................................................................................................................3-99
Motor Control Interface...........................................................................................3-100
Speed Control Fault Check......................................................................................3-103
Speed Feedback Calculation....................................................................................3-105
Speed/Torque Overview..........................................................................................3-106
Speed/Torque Regulator..........................................................................................3-107
System Data Parameters.................................................................................................3-112
Exec time/Chop freq ...............................................................................................3-112
Motor ctrl alg sel.....................................................................................................3-112
Motor efficiency .....................................................................................................3-113
Motor service factor ................................................................................................3-114
Motor winding cfg ..................................................................................................3-114
Preflux Forcing.......................................................................................................3-114