Ultra Start 450 SERIES Manuel d'installation Page 283
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Publication 1398-5.2 – PDF 1997
Appendix F
Dynamic Braking Resistor SelectionAppendix F
This appendix provides equations to assist in sizing resistors for
dynamic braking.
A properly sized resistive load may be required to dynamically brake
the system by dissipating the energy stored in a motor. The section
“Emergency Stop Wiring” on page 7-5 depicts the necessary circuitry.
Winding inductance is ignored in this analysis, which allows the load
on the motor winding to be considered as purely resistive when
dynamic braking occurs. This simplifies the evaluation to a scalar
analysis, instead of a vector analysis. For simplicity, friction, damping
and load torque also are ignored in the equations.
Dynamic Braking Equations Equations for the magnitutde of instanteous velocity, and per phase
current, energy and power are derived by solving the differential
equation governing the motor velocity. The equations are shown
below.
Table F.1: Dynamic Braking Resistor Parameters
Parameter Description Parameter Description
i(t) Phase Current R
L
Line-Neutral Dynamic Braking Resis-
tance
E(t) Per Phase Energy K
E
Peak Line-to-Line Back EMF
J
m
Motor Inertia K
T
Peak Line-to-Line Torque Constant
J
L
Load Inertia ω
o
Initial Angular Velocity
P(t) Per Phase Power w Angular Velocity
R Motor Line-to-Line Resis-
tance
tTime
Intro
ω t() ω
o
e
t– τ⁄
=
1()
where
τ 0.866
R2R
L
+()J
M
J
L
+()
K
E
K
T
-------------------------------------------------
=
it()
K
E
ω
o
e
t– τ⁄
0.866 R 2R
L
+()
---------------------------------------=
Et()
1
2
---
J
L
J
M
+()ω
2
o
e
2t– τ⁄
=
- 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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