GE General Electric Computer Accessories Medium Voltage GP Type G Drives User Manual Page 148
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Chapter 3 Paramters/Functions Innovation Series Medium Voltage GP Type - G Drives GEH-6385
After the speed reference has been selected from the local or remote source, the
Speed Reference Generation function allows several subordinate functions to operate
on the speed reference. The Speed Reference Reverse function reverses the speed
reference if the user has requested that action. The Minimum Speed Limit function
makes sure the speed reference magnitude is above a specified level. The Critical
Speed Avoidance function prohibits the speed reference from entering specified
ranges. The Speed Reference Ramp function limits the speed reference’s rate of
change.
The output of the Speed Reference Ramp function (Speed ref, ramped) is also the
output of the Speed Reference Generation function. This final speed reference passes
to the Speed/Torque Overview function for further conditioning before it becomes
the reference to the Speed/Torque Regulator function.
Related diagrams
• Speed Reference Generation (Ovr_RfSel)
Speed Reference Ramp
The Speed Reference Ramp function forces the speed reference to change in a
controlled fashion. It limits the rate of change of the speed reference that goes to the
Speed/Torque Overview function.
Function inputs
The following table specifies the input variables of the Speed Reference Ramp
function.
Variable Description
Speed ref, pre ramp
Speed reference that is the output of the Critical Speed
Avoidance function (variable Spd avd func output). RPM
Speed reg fbk
Speed feedback that in some conditions becomes the
output of the ramp. RPM
Ramp ref enabled Enables the speed reference input to the ramp.
Emergency stop act A Stopping Commands and Modes signal that indicates
that an emergency stop has been commanded.
Function outputs
The following table specifies the output variables of the Speed Reference Ramp
function.
Variable Description
Speed ref, ramped
Speed reference which has been rate limited by the linear
ramp. RPM
Function configuration
The following table specifies the general configuration parameters of the Speed
Reference Ramp function.
Parameter Description
Ramp bypass Disables the Speed Reference Ramp function.
Ramp rate mode Specifies whether the speed independent ramp rate mode or
the programmed ramp rate mode is active.
Emerg ramp rate Deceleration ramp rate under emergency stop conditions.
RPM/second
- Innovation Series 1
- Safety Symbol Legend 5
- Contents 7
- Chapter 4 Wizards 4-1 9
- Chapter 1 Overview 13
- Related Documents 15
- How to Get Help 15
- Introduction 17
- Types of Faults 18
- Fault Indication 18
- Fault Descriptions 19
- No. Name Type Description 20
- Capture Buffer 58
- Function Outputs 59
- Function Configuration 60
- General Purpose Constants 64
- General Purpose Filters 65
- Oscillator 66
- Position Feedback 67
- Predefined Constants 68
- Signal Level Detector (SLD) 69
- Simulator 72
- Control Diagnostic Variables 73
- Line Simulator 73
- Drive Configuration Functions 74
- Pattern field 75
- Frame size field 75
- System voltage field 75
- Shunt rating field 75
- User entered parameters 75
- Calculated control variables 77
- General Setup Functions 78
- Keypad Contrast Adjustment 79
- Keypad Meter Configuration 79
- Keypad Security Configuration 81
- Language Display 83
- I/O Functions 84
- Digital inputs 85
- Hi-fi counters 85
- Contactor status 85
- DAC and meter outputs 85
- Relay outputs 86
- LAN Functions 88
- LAN Configuration and Health 89
- Configuration parameters 90
- LAN Signal Map 92
- LAN References 93
- 2 . RMS amps 95
- Motor Control Functions 98
- Flux Curve 99
- Leakage Inductance Curve 100
- Line Transfer 100
- Motor transfer functionality 101
- Motor capture functionality 101
- Motor Equivalent Circuit 102
- Motor Temperature Estimation 103
- Power Dip Protection 103
- Tach Loss Detection 104
- Function inputs 105
- Function configuration 105
- Faults and alarms 105
- Function description 105
- Protective Functions 106
- Function outputs 108
- Hardware Fault Strings 109
- Heatsink Thermal Protection 110
- Related faults and alarms 111
- Line-Line Voltage Protection 112
- Phase Current Protection 114
- Timed Overcurrent Detection 115
- Motor Ground Protection 120
- Diagnostic variables 121
- Phase Imbalance Monitor 122
- Related functions 123
- Related diagrams 123
- Line Monitor 124
- Phase Lock Loop 126
- Sequencer Functions 128
- Sequencer Permissives 130
- Stopping Commands and Modes 132
- Normal Stop 133
- Function output 135
- Sequencer Commands 136
- Flux Commands 137
- Sequencer Status 139
- Sequencer status variables 140
- Main Contactor Configuration 141
- Speed Reference Functions 143
- Local Speed Reference 144
- Minimum Speed Limit 145
- Remote Speed Reference 146
- Speed Reference Generation 147
- Speed Reference Ramp 148
- Speed Reference Reverse 151
- Motor Control Interface 154
- Speed Control Fault Check 157
- Speed Feedback Calculation 159
- Speed/Torque Overview 160
- Speed/Torque Regulator 161
- System Data Parameters 166
- Motor efficiency 167
- 3 x E-PH 168
- Chapter 4 Wizards 169
- Cell Test Wizard 172
- Running the Fiber-Optic Test 173
- Fiber-Optic Test was invoked 174
- Fiber-Optic Test completed 174
- Running the Bridge Cell Test 176
- DAC Setup 178
- Drive Commissioning 179
- Related elementaries 180
- Equivalent Circuit Data 182
- VNL INL LOAD * 1.00 183
- 460 98.90 Eff.: 0.9632 183
- 403 77.84 P.F.: 0.8670 183
- 345 64.06 IL: 280.07 183
- 288 52.21 SLIP: 0.0048 183
- Revolution 184
- Manual Reference 187
- References 188
- Independent Rates 189
- Stopping Behavior 193
- Line Transfer Tuneup 196
- Panel Meter Setup 200
- Per Unit Setup 200
- Line Protection Setup 201
- Pulse Test 202
- Remaining Parameter Setup 205
- Simulator Setup 206
- Speed Regulator Tuneup: Model 207
- Regulator Gains Command 209
- Chapter 5 Signal Mapping 211
- LAN Interfaces 212
- Variable Mapping 214
- Controller 215
- Variable Maps 216
- Real Variable Map 217
- Boolean Variable Map 218
- ACMVAC-G Inverter Overview 223
- ACMVAC-G Inverter Index 224
- Drive Lan Signal Map 227
- Line Monitor Overview 230
- Phase Lock Loop Regulator 231
- Sequencing Overview 232
- General Sequencing #1 233
- General Sequencing #2 234
- General Sequencing #3 235
- General Sequencing #4 236
- General Sequencing #5 237
- Critical Speed Avoidance 239
- Speed / Torque Overview 241
- Speed Feedback 242
- Speed Regulator 243
- Motor Control 246
- Signal Level Detection 248
- Capture Buffer Configuration 249
- Position Feedback Instrument 250
- 0, 3-60, 3-61 252
- , 3-60, 3-61 252
- , 2-23, 3-32 253
- , 2-24, 3-32 253
- , 3-58, 3-59 257
- 5HDGHU&RPPHQWV 263
- *(,QGXVWULDO6\VWHPV 264
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