YASKAWA Z1000 User Manual page 6

Table of Contents
U3: Fault History.............................................................................................................................. 188
U4: Maintenance Monitors .............................................................................................................. 188
U5: PI Monitors................................................................................................................................ 189
U6: Operation Status Monitors ........................................................................................................ 189
5. TROUBLESHOOTING.......................................................................................... 191
5.1 Section Safety....................................................................................................................192
5.2 Motor Performance Fine-Tuning ......................................................................................194
Fine-Tuning V/f Control ................................................................................................................... 194
Fine-Tuning Open Loop Vector Control for PM Motors................................................................... 194
Parameters to Minimize Motor Hunting and Oscillation .................................................................. 195
5.3 Drive Alarms, Faults, and Errors .....................................................................................196
Types of Alarms, Faults, and Errors................................................................................................ 196
Alarm and Error Displays ................................................................................................................ 197
5.4 Fault Detection ..................................................................................................................200
Fault Displays, Causes, and Possible Solutions ............................................................................. 200
5.5 Alarm Detection .................................................................................................................216
Alarm Codes, Causes, and Possible Solutions ............................................................................... 216
5.6 Programming Errors .........................................................................................................225
Operator Programming Error Codes, Causes, and Possible Solutions........................................... 225
5.7 Auto-Tuning Fault Detection ............................................................................................229
Auto-Tuning Codes, Causes, and Possible Solutions..................................................................... 229
5.8 Copy Function Related Displays .....................................................................................231
Tasks, Errors, and Troubleshooting ................................................................................................ 231
5.9 Diagnosing and Resetting Faults.....................................................................................233
Fault Occurs Simultaneously with Power Loss ............................................................................... 233
If the Drive Still has Power After a Fault Occurs ............................................................................. 233
Viewing Fault Trace Data After Fault .............................................................................................. 233
Fault Reset Methods ....................................................................................................................... 234
5.10 Troubleshooting without Fault Display ...........................................................................235
Common Problems.......................................................................................................................... 235
Cannot Change Parameter Settings ............................................................................................... 235
Motor Does Not Rotate Properly after Pressing AUTO Button or after Entering External Run
Command ...................................................................................................................................... 236
Motor is Too Hot.............................................................................................................................. 237
oPE02 Error Occurs When Lowering the Motor Rated Current Setting .......................................... 238
Motor Stalls during Acceleration or Acceleration Time is Too Long................................................ 238
Drive Frequency Reference Differs from the Controller Frequency Reference Command ............. 239
Excessive Motor Oscillation and Erratic Rotation............................................................................ 239
Deceleration Takes Longer than Expected ..................................................................................... 239
Noise From Drive or Motor Cables When the Drive is Powered On ............................................... 239
Ground Fault Circuit Interrupter (GFCI) Trips During Run .............................................................. 239
Connected Machinery Vibrates When Motor Rotates ..................................................................... 240
PI Output Fault ................................................................................................................................ 240
Motor Rotates after the Drive Output is Shut Off (Motor Rotates During DC Injection Braking) ..... 240
Output Frequency is Not as High as Frequency Reference............................................................ 241
Sound from Motor............................................................................................................................ 241
Unstable Motor Speed when Using PM .......................................................................................... 241
Motor Does Not Restart after Power Loss....................................................................................... 241
6 YASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive - Z1000 User Manual