Yaskawa G7 Drive User Manual Page 383
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7-2
Protective and Diagnostic Functions
This section describes the alarm functions of the Drive. The alarm functions include fault detection, alarm
detection, operation error detection, and autotuning error detection.
Fault Detection
When the Drive detects a fault, the fault contact output operates, and the Drive output is shut OFF causing the
motor to coast to a stop. (The stopping method can be selected for some faults, and the selected stopping
method will be used with these faults.) A fault code is displayed on the Digital Operator.
When a fault has occurred, refer to the following table to identify and correct the cause of the fault.
Use one of the following methods to reset the fault after restarting the Drive:
• Set a multi-function contact input (H1-01 to H1-05) to 14 (Fault Reset) and turn ON the fault reset signal.
• Press the RESET Key on the Digital Operator.
• Turn the main circuit power supply OFF and then ON again.
Table 7.1 Fault Displays and Processing
Display Meaning Probable Causes Corrective Actions
OC
Over Cur-
rent
Overcurrent
The Drive output current exceeded the
overcurrent detection level. (200% of
rated current)
• A short-circuit or ground fault
occurred at the Drive output. (A
short or ground fault can be caused
by motor burn damage, worn insu-
lation, or a damaged cable.)
• The load is too large or the accelera-
tion/deceleration time is too short.
• A special-purpose motor or motor
with a capacity too large for the
Drive is being used.
• A magnetic switch was switched at
the Drive output.
Reset the fault after correcting its
cause.
GF
Ground
Fault
Ground Fault
The ground fault current at the Drive
output exceeded approximately 50%
of the Drive rated output current.
A ground fault occurred at the Drive
output. (A ground fault can be caused
by motor burn damage, worn insula-
tion, or a damaged cable.)
Reset the fault after correcting its
cause.
PUF
Main IBGT
Fuse
Blown
Fuse Blown
The fuse in the main circuit is blown.
The output transistor has failed
because of a short-circuit or ground
fault at the Drive output.
Check whether there is a short-circuit
between the following terminals. A
short-circuit will damage the output
transistor:
B1 ( 3) ←→ U/T1, V/T2, W/T3
←→ U/T1, V/T2, W/T3
Replace the Drive after correcting
the cause.
OV
DC Bus
Fuse Open
Main Circuit Overvoltage
The main circuit DC voltage exceeded
the overvoltage detection level.
200-240 V class: Approx. 410 V
380-380 V class: Approx. 820 V
The deceleration time is too short and
the regenerative energy from the
motor is too large.
Increase the deceleration time or
connect a braking resistor (or
Braking Resistor Unit).
The power supply voltage is too high.
Decrease the voltage so it's within
specifications.
- G7 Drive 1
- Technical Manual 1
- Warnings and Cautions 2
- Intended Use 3
- Safety Precautions 4
- Always heed the warnings 5
- Warning Information 5
- Registered Trademarks 7
- Contents 8
- Handling Drives 14
- Varispeed G7 Introduction 15
- Confirmations upon Delivery 16
- Drive Model Numbers 17
- Drive Specifications 17
- Component Names 18
- Fig 1.6 Drive Appearance 19
- Open Chassis Drives (IP00) 20
- NEMA Type 1 Drives (IP 20) 21
- Installation Site 23
- Removing the Terminal Cover 25
- Attaching the Terminal Cover 26
- Front Cover 27
- Removing the Front Cover 28
- Mounting the Front Cover 28
- Attaching the Front Cover 30
- Connection Diagram 33
- Connection Diagram 34
- Terminal Block Configuration 35
- Wiring Main Circuit Terminals 36
- Wire Size * Terminal Screw 42
- Main Circuit Configurations 45
- Standard Connection Diagrams 46
- Wiring the Main Circuits 47
- Inductive 50
- Ground Wiring 51
- Digital 54
- Sinking/Sourcing Mode 59
- Control Circuit Wire Sizes 61
- Wiring Checks 61
- Wiring 67
- Wiring the PG-B2 69
- Wiring the PG-D2 70
- Wiring the PG-X2 70
- Wiring Terminal Blocks 71
- PG power supply 72
- Capacitor for momentary 72
- Digital Operator and Modes 74
- Digital Operator 75
- Digital Operator Keys 76
- Drive Mode Indicators 77
- Run Indicator 78
- Stop Indicator 78
- Drive Modes 78
- Drive Mode 80
- Quick Programming Mode 82
- Advanced Programming Mode 83
- U1- 01=60.00Hz 84
- Entry Accepted 84
- Verify Mode 86
- Autotuning Mode 87
- Trial Operation 90
- Trial Operation Procedure 91
- Trial Operation Procedures 92
- Checking the Display Status 93
- Basic Settings 94
- Overview of Settings 96
- Setting the Control Method 97
- Autotuning 98
- IMPORTANT 100
- Application Settings 103
- No-load Operation 103
- Loaded Operation 104
- Password (A1-04 and A1-05) 105
- Adjustment Suggestions 106
- Recommended 107
- User Parameters 112
- User Parameter Descriptions 113
- Description 115
- Control Methods 115
- User Parameter Tables 121
- User-set Parameters: A2 122
- Application Parameters: b 123
- DC Injection Braking: b2 125
- Speed Search: b3 126
- Timer Function: b4 128
- PID Control: b5 128
- Dwell Functions: b6 131
- DROOP Control: b7 131
- Energy Saving: b8 132
- Zero Servo: b9 132
- Autotuning Parameters: C 133
- Motor Slip Compensation: C3 135
- Torque Compensation: C4 136
- Speed Control (ASR): C5 137
- Carrier Frequency: C6 138
- Reference Parameters: d 139
- Reference Limits: d2 141
- Jump Frequencies: d3 141
- Reference Frequency Hold: d4 142
- Torque Control: d5 142
- Field Control: d6 144
- Motor Setup Parameters: E 145
- Parameter 146
- Motor Setup: E2 147
- Motor 2 V/f Pattern: E3 148
- Motor 2 Setup: E4 150
- Option Parameters: F 152
- Analog Reference Card: F2 155
- Digital Reference Card: F3 156
- Analog Monitor Cards: F4 156
- Setting 163
- Function 163
- Analog Inputs: H3 166
- H3-05,H3-09 Settings 168
- MODBUS Communications: H5 170
- Pulse Train I/O: H6 171
- Motor Overload: L1 172
- Power Loss Ridethrough: L2 173
- Stall Prevention: L3 174
- Reference Detection: L4 177
- Fault Restart: L5 178
- Torque Detection: L6 179
- Torque Limits: L7 182
- Hardware Protection: L8 183
- n: Special Adjustments 185
- High-slip Braking: n3 186
- Speed Estimation: n4 187
- Feed Forward: n5 190
- Copy Function: o3 194
- T: Motor Autotuning 195
- U: Monitor Parameters 197
- U1-40= 00000000 201
- Fault Trace: U2 203
- Fault History: U3 205
- Setting Range Unit 207
- Factory Setting 207
- Frequency 212
- Voltage 212
- 208-240Vac Drives 213
- Name Unit Factory Setting 214
- 380-480Vac Drives 215
- Parameter Settings by 218
- Frequency Reference 219
- 3.5 to 13.2 V 221
- Related Parameters 222
- Run Command 224
- Stopping Methods 226
- Accel Time 1 227
- C1-01= 0 010.0Sec 227
- Output frequency 228
- Run command 228
- DC Braking Stop 229
- Coast to Stop with Timer 229
- Using the DC Injection Brake 230
- Using an Emergency Stop 231
- Commands 234
- During Acceleration Function) 237
- Time Chart 238
- Setting Precautions 238
- Deceleration Function) 239
- Setting Example 240
- Frequency reference 243
- Terminal A1 input voltage 243
- Function) 247
- Limiting Minimum Frequency 248
- Improved Operating Efficiency 249
- Slip compensation limit 251
- E1-06: Base frequency 251
- Hunting-prevention Function 254
- Machine Protection 256
- C6-03 ≥ 10.0 kHz: K=3 257
- 5.0 kHz > C6-03: K=1 257
- 200-240 V, 22 kW 258
- 200-240 V, 30 to 75 kW 258
- Detecting Motor Torque 262
- Function Contents (100%) 267
- Motor Overload Protection 268
- Setting Motor Rated Current 269
- Error Code Details 272
- Continuing Operation 274
- Setting Precautions 275
- Speed Search 276
- Speed Search Selection 279
- Estimated Speed Search 279
- Application Precautions 283
- Drive Protection 284
- Input Terminal Functions 286
- Ramp Hold) 288
- Application Precautions 289
- Precautions 290
- (FJOG/RJOG) 294
- (External Fault Function) 295
- Monitor Parameters 296
- Load impedance 300
- Sinking current 300
- External power supply 300
- Individual Functions 301
- Message Format 305
- MODBUS Message Example 306
- Data Tables 308
- Monitor Data 309
- ENTER Command 311
- Error Codes 312
- Slave Not Responding 312
- Self-Diagnosis 313
- Using the Timer Function 314
- Using PID Control 315
- Adjustment 316
- PID Control Methods 319
- PID Input Methods 319
- PID Adjustment Methods 320
- PID Fine Adjustment Methods 320
- PID Control Block 322
- PID Feedback Loss Detection 323
- PID Sleep 323
- Energy-saving 324
- Setting Motor Parameters 325
- Setting the V/f Pattern 328
- E1-03 V/f Pattern Selection 330
- Torque Control 337
- Monitor Function 339
- Torque Reference Adjustment 343
- Motor speed 348
- The proportional gain is low 348
- Droop Control Function 351
- Zero-servo Function 352
- Digital Operator Functions 356
- Disabling the STOP Key 358
- Enter Key 359
- Copying Parameters 360
- A1 - 00=1 361
- Copy Function.) 363
- DATA VERIFYING 364
- VERIFY ERROR 365
- Operation 366
- Using PG Speed Control Card 370
- Setting Number of PG Pulses 370
- Detecting PG Open Circuit 372
- Detecting Motor Overspeed 372
- Using Digital Output Cards 373
- F5-09 Set to 0 375
- F5-09 Set to 1 375
- F5-09 Set to 2 375
- DI-08 Reference Ranges 380
- Troubleshooting 382
- Fault Detection 383
- Alarm Detection 390
- (blinking) 393
- Operation Errors 394
- Errors During Autotuning 396
- If Motor Deceleration is Slow 404
- If the Motor Overheats 405
- Maintenance and 410
- Inspection 410
- Maintenance and Inspection 411
- Periodic Maintenance of Parts 412
- Air flow direction 413
- Fan cover 413
- Removing and Mounting the 415
- Control Circuit Terminal Card 415
- Specifications 416
- Standard Drive Specifications 417
- 4075 4090 4110 418
- 4132 4160 4185 4220 4300 418
- Common Specifications 419
- * Under development 423
- Appendix 424
- Varispeed G7 Control Modes 425
- Load torque (%) 428
- Speed (Hz) 428
- Driving torque 428
- Regenerative torque 428
- Fig 10.1 429
- Fig 10.2 429
- Fig 10.3 429
- Fig 10.4 429
- Selection 430
- Installation 431
- Settings 431
- Handling 432
- Motor Application Precautions 433
- CE Markings 435
- Input Fuses 436
- L1L2L3PE 438
- L1L2L3 T1 T3T2 439
- UL Markings 441
- Conformance to UL Standard 441
- Control Circuit Terminal 442
- Interrupting Rating 442
- Motor Overheat Protection 442
- 0.0 C2-01 443
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