Yaskawa Matrix Converter User Manual Page 208
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Machine Protection
6-43
Stall Prevention during Run
Stall Prevention during Run prevents the motor from stalling by automatically lowering the MxC's output fre-
quency when a transient overload occurs while the motor is operating at a constant speed.
Stall Prevention during Run is enabled only during V/f Control. If the MxC output current continues to exceed
the setting in parameter L3-06 for 100 ms or longer, the motor speed is reduced. Set whether to enable or dis-
able deceleration time using parameter L3-05. Set the deceleration time using C1-02 (Deceleration Time 1) or
C1-04 (Deceleration Time 2).
If the MxC output current reaches the set value in L3-06 - 2% (MxC Rated Output Current), the motor will
accelerate again at the frequency set or the acceleration time set.
Related Parameters
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display
V/f
Open
Loop
Vector
Flux
Vector
L3-05
Stall Prevention
Selection During
Running
Selects the stall prevention method to use to
prevent MxC faults during run.
0: Disabled.- MxC runs a set frequency. A
heavy load may cause the MxC to trip on
an OC or OL fault.
1: Decel Time 1 - In order to avoid stalling
during heavy loading, the MxC will decel-
erate at Decel time 1 (C1-02) if the output
current exceeds the level set by L3-06.
Once the current level drops below the
L3-06 level, the MxC will accelerate back
to its frequency reference at the active
acceleration rate.
2: Decel Time 2 - Same as setting 1 except
the MxC decelerates at Decel Time 2 (C1-
04).
When output frequency is 6 Hz or less,
Stall Prevention during Run is disabled
regardless of the setting in L3-05.
0 to 2 1 No A No No
StallP Run Sel
L3-06
Stall Prevention
Level During Run-
ning
This parameter is enabled when L3-05 is set
to “1” or “2”. MxC rated current is set as
100%.
Decrease the set value if stalling or excessive
current occurs with the defaults.
30 to
200
160% No A No No
StallP Run Level
- Varispeed AC 1
- General Precautions 3
- Safety Information 4
- Safety Precautions 5
- Setting Parameters 6
- Test Run 6
- Maintenance and Inspection 7
- MxC is operating 8
- °C for 30 9
- AVERTISSEMENT 10
- Warranty Information 11
- Registered Trademarks 12
- Contents 13
- Revision History 19
- MxC Physical Installation 20
- MxC Introduction 21
- MxC Models 22
- Confirmations upon Delivery 23
- MxC Model Numbers 24
- MxC Specifications 24
- Component Names 25
- Installation Site 29
- IMPORTANT 30
- Removing the Terminal Cover 31
- Attaching the Terminal Cover 32
- Front Cover 33
- Attaching the Front Cover 34
- Connecting Peripheral Devices 36
- Connection Diagram 37
- Terminal Block Configuration 39
- Charge indicator 40
- Control circuit terminals 40
- Ground terminal 40
- Main circuit terminals 40
- Wiring Main Circuit Terminals 41
- Ter mi na l 42
- Line voltage drop (V) = 43
- Main Circuit Configurations 44
- Standard Connection Diagrams 45
- Wiring Main Circuit Inputs 46
- Inductive 48
- Ground Wiring 50
- Wiring Method 52
- External + 24 V 56
- CIMR-ACA2011 57
- Wiring Check 59
- Wiring 64
- or less 65
- Wiring Terminal Blocks 66
- PG power supply 67
- Digital Operator and Modes 69
- Digital Operator 70
- Digital Operator Keys 70
- Lit Blinking Not lit 71
- Operation Modes 73
- MxC Modes 73
- Switching Between Modes 74
- Drive Mode 75
- Quick Programming Mode 77
- Advanced Programming Mode 78
- Setting Parameters 79
- U1- 01=60.00Hz 79
- Entry Accepted 79
- Verify Mode 81
- Auto-Tuning Mode 82
- Test Run 84
- Test Run Procedure 85
- Test Run Procedures 86
- Switching the Power On 86
- Checking the Display Status 86
- Basic Settings 87
- Overview of Settings 89
- Setting the Control Method 90
- Parameter 94
- Application Settings 95
- No-load Operation 95
- Loaded Operation 95
- Saving Parameters 96
- Notes on Tuning the MxC 97
- VC = × Vmax × K 98
- Parameters and Settings 101
- Parameter Descriptions 102
- Torque Control 103
- Description 104
- Control 104
- Parameter Tables 107
- b: Application 109
- b2: DC Injection Braking 110
- b3: Speed Search 111
- b4: Timer Function 112
- b5: PID Control 112
- b6: Dwell Functions 114
- b7: Droop Control 114
- b9: Zero-servo 115
- C: Auto-Tuning 116
- C3: Motor Slip Compensation 117
- C4: Torque Compensation 118
- C5: Speed Control (ASR) 119
- C6: Carrier Frequency 119
- d: Reference 120
- d2: Reference Limits 121
- d3: Jump Frequencies 122
- d4: Reference Frequency Hold 122
- d5: Torque Control 123
- d6: Field Weakening 124
- E: Motor Parameter 125
- E2: Motor Setup 126
- E3: Motor 2 V/f Pattern 127
- E4: Motor 2 Setup 127
- F: Option 129
- F2: Analog Reference Card 130
- F3: Digital Reference Card 131
- F4: Analog Monitor Cards 131
- H: Terminal Function 134
- Function 136
- H3: Analog Inputs 139
- H3-05, H3-09 Settings 140
- H5: MEMOBUS Communications 142
- L: Protection Function 143
- L2: Power Loss Ridethrough 144
- L3: Stall Prevention 145
- L4: Reference Detection 146
- L5: Fault Restart 147
- L6: Torque Detection 147
- Regenerative 148
- L8: Hardware Protection 149
- n: Special Adjustments 150
- n5: Feed Forward 151
- o: Digital Operator 152
- o3: Copy Function 154
- T: Motor Auto-Tuning 155
- U: Monitors 157
- U1-10= 0000 158
- U2-25= 161
- 00000000 161
- U2: Fault Trace 162
- U3: Fault History 163
- Setting Range Unit 164
- Parameter Settings by 166
- Frequency Reference 167
- Related Parameters 170
- • Step 1 171
- • Step 2 171
- • Step 3 171
- Run Command 172
- MxC Functions 172
- Stopping Methods 176
- Decelerate to Stop 177
- Coast to Stop 178
- DC Braking Stop 179
- Coast to Stop with Timer 179
- Using DC Injection Braking 180
- Commands 183
- 1 V 2 V 5 V 10 V 184
- Time Chart 187
- Setting Precautions 187
- Deceleration Function) 188
- Limiting Minimum Frequency 195
- Improved Operating Efficiency 197
- Hunting-Prevention Function 201
- Machine Protection 203
- Model: CIMR-ACA4022 204
- Models: CIMR-ACA4110 and 4160 204
- Reverse 207
- Stall Prevention during Run 208
- Control Methods 209
- Detecting Motor Torque 213
- Setting Example 214
- Yes Yes Ye s 215
- Motor Overload Protection 216
- Rotation speed (%) 217
- Continuing Operation 221
- Speed Search 224
- Speed Search Selection 226
- Estimated Speed Search 227
- Application Precautions 230
- MxC Protection 231
- Input Terminal Functions 232
- Application Precautions 235
- Precautions 235
- (FJOG/RJOG) 240
- (External Fault Function) 241
- Output Terminal Functions 242
- Monitor Parameters 244
- Individual Functions 247
- Using MEMOBUS Communications 247
- Message Format 250
- MEMOBUS Message Example 251
- Data Tables 253
- Monitor Data 254
- ENTER Command 256
- Error Codes 257
- Slave Not Responding 257
- Using the Timer Function 258
- Using PID Control 259
- PID Control Applications 260
- Monitor Functions 261
- PID Control Methods 262
- PID Input Methods 262
- Adjusting PID Settings 263
- Fine Tuning PID 263
- Select PID Output 265
- Level Selection 265
- PID Feedback Loss Detection 266
- PID Sleep 266
- Setting Motor Parameters 267
- Setting the V/f Pattern 269
- Setting V/f Pattern 270
- Torque Control 273
- Speed Limit Bias Setting 277
- Speed Control (ASR) Structure 280
- Droop Control Function 286
- Zero-Servo Function 288
- Digital Operator Functions 290
- Copying Parameters 293
- A1 - 00=1 294
- Setting a Password 298
- Using PG Speed Control Card 301
- Setting Number of PG Pulses 301
- Detecting PG Disconnect 302
- Using Digital Output Cards 303
- DI-08 Reference Ranges 310
- Brake On/Off Sequence 311
- Auto-Tuning 312
- Control Related Adjustments 314
- Dwell Function at Start 316
- • Lifting 318
- PCB Board 321
- Troubleshooting 322
- Fault Detection 323
- CIMR-ACA4160 326
- Does the fan rotate 326
- Alarm Detection 332
- Operation Errors 336
- Errors During Auto-Tuning 337
- Trouble Setting Parameters 339
- If the Motor Does Not Operate 340
- Motor Overheat 344
- Mechanical Oscillation 346
- Maintenance and 348
- Inspection 348
- Maintenance and Inspection 349
- Limited Warranty 349
- Daily Inspection 349
- Periodic Inspection 349
- Periodic Maintenance of Parts 350
- Front cover 351
- Terminal cover 351
- BackFront 353
- Mounting screws for fan cover 357
- Fan cover 357
- Mounting screws for 357
- Front cover 1 358
- Mounting screws B 358
- Mounting screws A 358
- Fan unit 358
- Fan cable relay connectors 358
- Mounting screws 359
- Fan Replacement 360
- 3. Reverse the fan unit 361
- Removal 362
- Installation 363
- Specifications 364
- Standard MxC Specifications 365
- Common Specifications 366
- * 2. Under development 370
- Appendix 371
- MxC Control Methods 372
- Control Methods and Features 372
- V/f Control (A1-02 = 0) 374
- MxC Application Precautions 375
- Selection 375
- Installation 378
- Settings 378
- Handling 379
- Motor Application Precautions 380
- Wiring Examples 382
- Fig 10.5 383
- Fig 10.6 384
- External 385
- Fig 10.8 386
- Parameters 387
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