Yaskawa Z1000 AC Drive HVAC - Manual (Page 6)

U3: Fault History.............................................................................................................................. 187
U4: Maintenance Monitors .............................................................................................................. 187
U5: PI Monitors................................................................................................................................ 187
U6: Operation Status Monitors ........................................................................................................ 187
5. TROUBLESHOOTING.......................................................................................... 189
5.1 Section Safety....................................................................................................................190
5.2 Motor Performance Fine-Tuning......................................................................................192
Fine-Tuning V/f Control ................................................................................................................... 192
Fine-Tuning Open Loop Vector Control for PM Motors................................................................... 192
Parameters to Minimize Motor Hunting and Oscillation .................................................................. 193
5.3 Drive Alarms, Faults, and Errors .....................................................................................194
Types of Alarms, Faults, and Errors................................................................................................ 194
Alarm and Error Displays ................................................................................................................ 195
5.4 Fault Detection ..................................................................................................................198
Fault Displays, Causes, and Possible Solutions ............................................................................. 198
5.5 Alarm Detection.................................................................................................................211
Alarm Codes, Causes, and Possible Solutions ............................................................................... 211
5.6 Programming Errors .........................................................................................................218
Operator Programming Error Codes, Causes, and Possible Solutions........................................... 218
5.7 Auto-Tuning Fault Detection ............................................................................................222
Auto-Tuning Codes, Causes, and Possible Solutions..................................................................... 222
5.8 Copy Function Related Displays .....................................................................................224
Tasks, Errors, and Troubleshooting ................................................................................................ 224
5.9 Diagnosing and Resetting Faults.....................................................................................226
Fault Occurs Simultaneously with Power Loss ............................................................................... 226
If the Drive Still has Power After a Fault Occurs ............................................................................. 226
Viewing Fault Trace Data After Fault .............................................................................................. 226
Fault Reset Methods ....................................................................................................................... 227
5.10 Troubleshooting without Fault Display...........................................................................228
Common Problems.......................................................................................................................... 228
Cannot Change Parameter Settings ............................................................................................... 228
Motor Does Not Rotate Properly after Pressing AUTO Button or after Entering External Run
Command ...................................................................................................................................... 229
Motor is Too Hot.............................................................................................................................. 230
oPE02 Error Occurs When Lowering the Motor Rated Current Setting .......................................... 231
Motor Stalls during Acceleration or Acceleration Time is Too Long................................................ 231
Drive Frequency Reference Differs from the Controller Frequency Reference Command ............. 232
Excessive Motor Oscillation and Erratic Rotation............................................................................ 232
Deceleration Takes Longer than Expected ..................................................................................... 232
Noise From Drive or Motor Cables When the Drive is Powered On ............................................... 232
Ground Fault Circuit Interrupter (GFCI) Trips During Run .............................................................. 232
Connected Machinery Vibrates When Motor Rotates ..................................................................... 233
PI Output Fault ................................................................................................................................ 233
Motor Rotates after the Drive Output is Shut Off (Motor Rotates During DC Injection Braking) ..... 233
Output Frequency is Not as High as Frequency Reference............................................................ 234
Sound from Motor............................................................................................................................ 234
Unstable Motor Speed when Using PM .......................................................................................... 234
Motor Does Not Restart after Power Loss....................................................................................... 234
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6 YASKAWA ELECTRIC TOEP YAIZ1U 03A YASKAWA AC Drive – Z1000 User Manual