Mitsubishi Electric FR-F740-00023 Instruction Manual page 8

4.21.5 Free parameter (Pr. 888, Pr. 889) ........................................................................................ 257
4.22 Setting from the parameter unit, operation panel........................................ 258
4.22.1 PU display language selection (Pr. 145) .............................................................................. 258
4.22.2 Operation panel frequency setting/key lock selection (Pr. 161) ........................................... 258
4.22.3 Buzzer control (Pr. 990)........................................................................................................ 260
4.22.4 PU contrast adjustment (Pr. 991) ......................................................................................... 260
4.23 Parameter clear ............................................................................................... 261
4.24 All parameter clear.......................................................................................... 262
4.25 Parameter copy and parameter verification ................................................. 263
4.25.1 Parameter copy .................................................................................................................... 263
4.25.2 Parameter verification........................................................................................................... 264
4.26 Check and clear of the faults history ............................................................ 265
5 PROTECTIVE FUNCTIONS
5.1 Reset method of protective function ............................................................. 268
5.2 List of fault or alarm display ........................................................................... 269
5.3 Causes and corrective actions ....................................................................... 270
5.4 Correspondences between digital and actual characters ........................... 281
5.5 Check first when you have a trouble ............................................................. 282
5.5.1 Motor does not start............................................................................................................... 282
5.5.2 Motor or machine is making abnormal acoustic noise........................................................... 284
5.5.3 Inverter generates abnormal noise........................................................................................ 284
5.5.4 Motor generates heat abnormally .......................................................................................... 284
5.5.5 Motor rotates in the opposite direction .................................................................................. 285
5.5.6 Speed greatly differs from the setting .................................................................................... 285
5.5.7 Acceleration/deceleration is not smooth ................................................................................ 285
5.5.8 Speed varies during operation............................................................................................... 286
5.5.9 Operation mode is not changed properly .............................................................................. 286
5.5.10 Operation panel (FR-DU07) display is not operating............................................................. 287
5.5.11 Motor current is too large....................................................................................................... 287
5.5.12 Speed does not accelerate .................................................................................................... 288
5.5.13 Unable to write parameter setting.......................................................................................... 288
5.5.14 Power lamp is not lit .............................................................................................................. 288
6 PRECAUTIONS FOR MAINTENANCE AND INSPECTION
6.1 Inspection item................................................................................................. 290
6.1.1 Daily inspection ..................................................................................................................... 290
6.1.2 Periodic inspection ................................................................................................................ 290
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