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5.5
Check first when you have a trouble.................................................................. 347
5.5.1
Motor does not start.................................................................................................................... 347
5.5.2
Motor or machine is making abnormal acoustic noise................................................................ 349
5.5.3
Inverter generates abnormal noise ............................................................................................. 349
5.5.4
Motor generates heat abnormally ............................................................................................... 349
5.5.5
Motor rotates in the opposite direction........................................................................................ 350
5.5.6
Speed greatly differs from the setting ......................................................................................... 350
5.5.7
Acceleration/deceleration is not smooth ..................................................................................... 350
5.5.8
Speed varies during operation.................................................................................................... 351
5.5.9
Operation mode is not changed properly.................................................................................... 351
5.5.10 Operation panel (FR-DU07) display is not operating.................................................................. 352
5.5.11 Motor current is too large............................................................................................................ 352
5.5.12 Speed does not accelerate ......................................................................................................... 353
5.5.13 Unable to write parameter setting............................................................................................... 353
5.5.14 Power lamp is not lit.................................................................................................................... 353
6
6.1
Inspection item ..................................................................................................... 356
6.1.1
Daily inspection........................................................................................................................... 356
6.1.2
Periodic inspection...................................................................................................................... 356
6.1.3
Daily and periodic inspection ...................................................................................................... 357
6.1.4
Display of the life of the inverter parts ........................................................................................ 358
6.1.5
Checking the inverter and converter modules ............................................................................ 358
6.1.6
Cleaning...................................................................................................................................... 358
6.1.7
Replacement of parts.................................................................................................................. 359
6.1.8
Inverter replacement................................................................................................................... 362
6.2
Measurement of main circuit voltages, currents and powers.......................... 363
6.2.1
Measurement of voltages and currents ...................................................................................... 363
6.2.2
Measurement of powers ............................................................................................................. 365
6.2.3
Measurement of voltages and use of PT .................................................................................... 365
6.2.4
Measurement of currents............................................................................................................ 366
6.2.5
Use of CT and transducer........................................................................................................... 366
6.2.6
Measurement of inverter input power factor ............................................................................... 366
6.2.7
Measurement of converter output voltage (across terminals P/+ and N/-) ............................... 367
6.2.8
Insulation resistance test using megger ..................................................................................... 367
6.2.9
Pressure test............................................................................................................................... 367
7
7.1
Rating .................................................................................................................... 370
7.2
Common specifications....................................................................................... 372
7.3
Outline dimension drawings ............................................................................... 374
VI
355
369
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