Ultra Start 450 SERIES Manuel d'installation Page 168
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Publication 1398-5.2 – PDF 1997
9-2 Tuning
Mechanical Resonance Mechanical resonance between the motor and the load occurs when
the motor and load are oscillating with the same frequency but
opposite phase: when the motor is moving clockwise the load is
moving counter clockwise. The amplitude of the motor and load
oscillations is such that the total momentum of the oscillating system
is zero. In the case of a high load to motor inertia ratio this means that
the motor may be moving quite a lot while the load is not moving
nearly as much. Mechanical resonance occurs as a result of
compliance (springiness) between the motor inertia and load inertia. It
may result from belts, flexible couplings or the finite torsional
stiffness of shafts. In general, the stiffer the couplings, the higher the
resonant frequency and lower the amplitude. If the motor shaft is
directly coupled to the load, a mechanically resonating system usually
emits a buzz or squeal at the motor.
There are several ways of dealing with this problem but they fall into
two groups: change the mechanical system or change the servo-motor
response. Changing the mechanical system might involve reducing the
inertia ratio via gearboxes or pulleys, or by increasing the stiffness of
the couplings. For very high performance systems and systems with
low resonance frequencies the mechanics may require changing to
effectively deal with the resonance.
The second way of dealing with mechanical resonance is by changing
the servo-motor response. This may be done by reducing the P-gain, I-
gain, velocity loop update rate or low-pass filter value.
Reducing the value of the P-gain, low-pass filter frequency and the
update frequency all have the effect of reducing the servo-motor
bandwidth. As long as the resonating frequency is fairly high this will
likely be acceptable, but if the resonating frequency is low it may be
necessary to modify the mechanics of the system.
Figure 9.1 Velocity Loop Structure
VELOCITY
COMMAND
MOTOR
VELOCITY
VELOCITY
CONTROL
VELOCITY
ERROR
SPEED
WINDOW
OVERSPEED
ZERO SPEED
+
Σ
-
+
Σ
+
Σ
+
Pgain
Igain
Ζ
-1
Σ
+
+
SPEED
WINDOW
OVERSPEED
ZERO SPEED
- Installation 1
- Important User 2
- Information 2
- Table of Contents 3
- ULTRA Master Installation 4
- Interfaces 5
- Intro-6 Table of Contents 6
- Intro-8 Table of Contents 8
- List of Figures 9
- Power Connections 10
- Status Display 11
- Options and Accessories 11
- Intro-12 List of Figures 12
- List of Tables 13
- Intro-14 List of Tables 14
- Creating Custom Motor Files 15
- Specifications 15
- Intro-16 List of Tables 16
- ULTRA 100 Series Product 17
- Receiving and Storage 17
- Responsibility 17
- Rockwell Automation 18
- Technical Product 19
- Assistance 19
- Purpose and Contents of this 19
- Related Documentation 21
- Additional Instructions and 22
- from the Help menu 23
- Graphical Symbols 24
- Intro-26 Preface 26
- Safety Chapter 1 27
- Voltage Potentials 28
- Safety 1-3 29
- 1-4 Safety 30
- Chapter 2 31
- Drive Checkout Test 33
- Storing the Unit 38
- Selecting Other System 39
- Components Chapter 3 39
- Analog I/O 41
- AC Input Power 41
- Personality Module 41
- Multiple Protection Circuits 41
- Serial Command Sources 41
- I/O Interface Analog Input 42
- Analog Output 43
- Digital Inputs 43
- Digital Outputs 43
- Auxiliary Encoder Interface 44
- Agency Approvals ● UL listed 45
- ● AC line filters 46
- European Union Requirements 47
- Chapter 4 48
- Starting and Quitting 49
- ULTRA Master 49
- From Windows 50
- The readme File 52
- Firmware Files 52
- Installation Chapter 5 53
- 5-2 Installation 54
- Installation 5-5 57
- 5-6 Installation 58
- Electromagnetic Compatibility 59
- Installation 5-11 63
- 5-12 Installation 64
- Interfaces Chapter 6 65
- 6-8 Interfaces 72
- Analog Inputs 74
- J1-6 or J1-13 78
- +15 Volts 78
- Divide by 1, the 81
- Controller 82
- 1354 motion controllers.) 83
- 6-20 Interfaces 84
- Interface Cable Examples 85
- Interfaces 6-25 89
- (not recommended) 89
- DIRECTION 90
- 6-28 Interfaces 92
- AM26LS33 93
- MC74HC14F 94
- Interfaces 6-33 97
- J5 - 9 Reserved 97
- 6-34 Interfaces 98
- Four Wire RS-485 Connections 99
- Interfaces 6-37 101
- 6-38 Interfaces 102
- Interfaces 6-39 103
- 6-40 Interfaces 104
- Chapter 7 105
- Power Connections 7-3 107
- Motor Overload Protection 108
- Power Supply Protection 109
- Emergency Stop Wiring 109
- 7-6 Power Connections 110
- Power Connections 7-9 113
- 7-10 Power Connections 114
- Examples Chapter 8 115
- Connection Diagram 116
- Configuration 116
- values for the input 117
- Operation 119
- Hardware Set Up 120
- Tuning 123
- When motion is required: 125
- Position Follower (Master 126
- Encoder) 126
- Follower Enable as Input 1 129
- Position Follower (Step/ 132
- Direction) 132
- Position Follower (Step Up/ 138
- Incremental Indexing 144
- 20. Choose 148
- Registration Indexing 151
- Absolute Indexing 157
- Start Index as Input 1 161
- Define Home as Input 2 161
- Not Assigned as Input 3 161
- ● Acceleration - from RPM/sec 164
- ● Distance in Mtr Revs 165
- ● Acceleration in Revs/sec 165
- ● Deceleration in Revs/sec 165
- ● Dwell in msec 165
- ● Velocity in RPM 165
- Tuning Chapter 9 167
- 9-2 Tuning 168
- Backlash 169
- Auto Tuning 169
- 9-4 Tuning 170
- Tuning 9-5 171
- Manual Tuning 172
- 9-8 Tuning 174
- Velocity Loop Tuning Examples 175
- 9-10 Tuning 176
- Figure 9.4 Underdamped Signal 176
- Tuning 9-11 177
- Figure 9.5 Overdamped Signal 177
- 9-12 Tuning 178
- Status Display Chapter 10 179
- Power-Up Error Codes 180
- 10-4 Status Display 182
- Chapter 11 183
- ● Green = Normal operation 185
- Error Codes 186
- RS-232 Communication Test 190
- Testing Digital Outputs 191
- Testing Digital Inputs 193
- Testing Analog Output 193
- Testing Analog Input 194
- Testing Encoder Inputs 195
- Appendix A 197
- Examples Appendix B 203
- Interface Cables 205
- Serial Interface Cables 213
- Encoder Feedback Cables 216
- PART NUMBER 9101-1373-TAB 219
- (P/N 9101-1446) 222
- Motor Power Cables 223
- (P/N 9101-2179) 225
- Allen-Bradley 9/Series CNC 228
- Family Connections 228
- Appendix C 233
- Ver11.10 234
- Press both keys at the 235
- same time 235
- C-4 TouchPad Instructions 236
- TouchPad Instructions C-5 237
- Supplemental Instructions 238
- Motor Selection 238
- Analog Output Scaling 238
- Displays 239
- C-8 TouchPad Instructions 240
- UnxpChar 242
- UpperLim 242
- Motor Table 243
- TouchPad Options and Lists 248
- TouchPad Lists 248
- C-22 TouchPad Instructions 254
- Appendix D 255
- Motor Parameter Set 256
- Motor Part Number 258
- General Parameters 259
- Feedback Parameters 263
- Figure D.5 Hall Offsets 264
- Offset) 264
- Electrical Parameters 265
- Rating Parameters 267
- Overcurrent 269
- Example of Custom Motor 270
- File Creation 270
- Custom Motor File 271
- 120 degrees 272
- Troubleshooting Custom 273
- Motor Files 273
- Appendix E 274
- AC Line Filter Selection 277
- Appendix F 283
- Sample Calculations 285
- Average Power (Watts): 286
- Specifications Appendix G 287
- Start Homing 290
- Power Dissipation 291
- T = 4.08 * (Q/A) + 1.1 292
- HelpIndex 293
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