Mitsubishi Electric FR-D720-0.2K-G Instruction Manual page 9

4.19.2 Display of the lives of the drive unit parts (Pr. 255 to Pr. 259)................................................... 231
4.19.3 Maintenance timer alarm (Pr. 503, Pr. 504)............................................................................... 235
4.19.4 Current average value monitor signal (Pr. 555 to Pr. 557) ........................................................ 236
4.19.5 Free parameter (Pr. 888, Pr. 889) ............................................................................................. 238
4.19.6 Initiating a fault (Pr. 997)............................................................................................................ 238
4.19.7 Batch setting Mitsubishi Electric HMI (GOT) connection parameters (Pr. 999)......................... 239
4.20 Setting the parameter unit and operation panel........................... 241
4.20.1 RUN key rotation direction selection (Pr. 40)............................................................................. 241
4.20.2 PU display language selection (Pr. 145).................................................................................... 241
4.20.3 Operation panel speed setting/key lock selection (Pr. 161)....................................................... 242
4.20.4 Magnitude of speed change setting (Pr. 295)............................................................................ 245
4.20.5 Buzzer control (Pr. 990)............................................................................................................. 246
4.20.6 PU contrast adjustment (Pr. 991) .............................................................................................. 246
4.21 Parameter clear/ All parameter clear............................................ 247
4.22 Initial value change list ................................................................. 248
4.23 Check and clear of the fault history.............................................. 249
5 TROUBLESHOOTING
5.1 Reset method of protective function ............................................. 252
5.2 List of fault or alarm indications .................................................... 253
5.3 Causes and corrective actions....................................................... 254
5.4 Correspondences between digital and actual characters ............ 264
5.5 Check first when you have a trouble.............................................. 265
5.5.1 Motor does not start.................................................................................................................... 265
5.5.2 Motor or machine is making abnormal acoustic noise................................................................ 266
5.5.3 Drive unit generates abnormal noise .......................................................................................... 267
5.5.4 Motor generates heat abnormally ............................................................................................... 267
5.5.5 Motor rotates in the opposite direction........................................................................................ 267
5.5.6 Speed greatly differs from the setting ......................................................................................... 267
5.5.7 Acceleration/deceleration is not smooth ..................................................................................... 268
5.5.8 Speed varies during operation.................................................................................................... 268
5.5.9 Operation mode is not changed properly.................................................................................... 269
5.5.10 Operation panel display is not operating .................................................................................... 269
5.5.11 Motor current is too large............................................................................................................ 269
5.5.12 Speed does not accelerate ......................................................................................................... 270
5.5.13 Unable to write parameter setting............................................................................................... 270
6 PRECAUTIONS FOR MAINTENANCE AND INSPECTION
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