Mitsubishi Electric FR-F720-00046 Instruction Manual page 8

4.21.4 Current average value monitor signal (Pr. 555 to Pr. 557) ................................................... 259
4.21.5 Free parameter (Pr. 888, Pr. 889) ........................................................................................ 261
4.22 Setting from the parameter unit, operation panel........................................ 262
4.22.1 PU display language selection (Pr. 145) .............................................................................. 262
4.22.2 Operation panel frequency setting/key lock selection (Pr. 161) ........................................... 262
4.22.3 Buzzer control (Pr. 990)........................................................................................................ 264
4.22.4 PU contrast adjustment (Pr. 991) ......................................................................................... 264
4.23 Parameter clear ............................................................................................... 265
4.24 All parameter clear.......................................................................................... 266
4.25 Parameter copy and parameter verification ................................................. 267
4.25.1 Parameter copy .................................................................................................................... 267
4.25.2 Parameter verification........................................................................................................... 268
4.26 Check and clear of the faults history ............................................................ 269
5 PROTECTIVE FUNCTIONS
5.1 Reset method of protective function ............................................................. 272
5.2 List of fault or alarm display ........................................................................... 273
5.3 Causes and corrective actions ....................................................................... 274
5.4 Correspondences between digital and actual characters ........................... 285
5.5 Check first when you have a trouble ............................................................. 286
5.5.1 Motor does not start............................................................................................................... 286
5.5.2 Motor or machine is making abnormal acoustic noise........................................................... 288
5.5.3 Inverter generates abnormal noise........................................................................................ 288
5.5.4 Motor generates heat abnormally .......................................................................................... 288
5.5.5 Motor rotates in the opposite direction .................................................................................. 289
5.5.6 Speed greatly differs from the setting .................................................................................... 289
5.5.7 Acceleration/deceleration is not smooth ................................................................................ 289
5.5.8 Speed varies during operation............................................................................................... 290
5.5.9 Operation mode is not changed properly .............................................................................. 290
5.5.10 Operation panel (FR-DU07) display is not operating............................................................. 291
5.5.11 Motor current is too large....................................................................................................... 291
5.5.12 Speed does not accelerate .................................................................................................... 292
5.5.13 Unable to write parameter setting.......................................................................................... 292
5.5.14 Power lamp is not lit .............................................................................................................. 292
6 PRECAUTIONS FOR MAINTENANCE AND INSPECTION
6.1 Inspection item................................................................................................. 294
6.1.1 Daily inspection ..................................................................................................................... 294
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