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III
CONTENTS
6.1 Reset method of protective function.......................................................................116
6.2 List of fault or alarm display....................................................................................117
6.3 Causes and corrective actions...............................................................................118
6.4 Correspondences between digital and actual characters......................................131
6.5 Check and clear of the faults history.................................................................. 132
6.6 Check first when you have a trouble......................................................................134
6.6.1 Motor does not start............................................................................................................... 134
6.6.2 Motor or machine is making abnormal acoustic noise........................................................... 136
6.6.3 Inverter generates abnormal noise........................................................................................ 136
6.6.4 Motor generates heat abnormally.......................................................................................... 136
6.6.5 Motor rotates in the opposite direction .................................................................................. 137
6.6.6 Speed greatly differs from the setting.................................................................................... 137
6.6.7 Acceleration/deceleration is not smooth................................................................................ 137
6.6.8 Speed varies during operation............................................................................................... 138
6.6.9 Operation mode is not changed properly .............................................................................. 138
6.6.10 Operation panel (FR-DU07) display is not operating............................................................. 139
6.6.11 Motor current is too large....................................................................................................... 139
6.6.12 Speed does not accelerate.................................................................................................... 140
6.6.13 Unable to write parameter setting.......................................................................................... 140
6.6.14 Power lamp is not lit .............................................................................................................. 140
7 PRECAUTIONS FOR MAINTENANCE AND INSPECTION 141
7.1 Inspection item .......................................................................................................141
7.1.1 Daily inspection ..................................................................................................................... 141
7.1.2 Periodic inspection ................................................................................................................ 141
7.1.3 Daily and periodic inspection................................................................................................. 142
7.1.4 Display of the life of the inverter parts ................................................................................... 143
7.1.5 Cleaning ................................................................................................................................ 145
7.1.6 Replacement of parts ............................................................................................................ 145
7.1.7 Inverter replacement.............................................................................................................. 149
8 SPECIFICATIONS 150
8.1 Rating .....................................................................................................................150
8.2 Common specifications ..........................................................................................152
8.3 Outline dimension drawings ...................................................................................154
8.3.1 Inverter outline dimension drawings ...................................................................................... 154
8.4 Specification of premium high-efficiency IPM motor
[MM-EFS (1500r/min) series] .................................................................................163
8.5 Specification of high-efficiency IPM motor
[MM-EF (1800r/min) series]....................................................................................164
8.6 Heatsink protrusion attachment procedure............................................................165
8.6.1 When using a heatsink protrusion attachment (FR-A7CN) ................................................... 165
8.6.2 Protrusion of heatsink of the FR-F740P-185K or higher ....................................................... 165