Mitsubishi Electric FR-E720-0.1K(SC) Instruction Manual page 8

4.22.1 Cooling fan operation selection (Pr. 244) .................................................................................. 263
4.22.2 Display of the life of the inverter parts (Pr. 255 to Pr. 259)........................................................ 264
4.22.3 Maintenance timer alarm (Pr. 503, Pr. 504) .............................................................................. 268
4.22.4 Current average value monitor signal (Pr. 555 to Pr. 557) ........................................................ 269
4.22.5 Free parameter (Pr. 888, Pr. 889) ............................................................................................. 271
4.23 Setting from the parameter unit and operation panel.................. 272
4.23.1 RUN key rotation direction selection (Pr. 40) ............................................................................ 272
4.23.2 PU display language selection(Pr.145) ..................................................................................... 272
4.23.3 Operation panel frequency setting/key lock operation selection (Pr. 161) ................................ 273
4.23.4 Magnitude of frequency change setting (Pr. 295)...................................................................... 275
4.23.5 Buzzer control (Pr. 990)............................................................................................................. 276
4.23.6 PU contrast adjustment (Pr. 991) .............................................................................................. 276
4.24 FR-E500 series operation panel (PA02) setting ............................ 277
4.24.1 Built-in potentiometer switching (Pr. 146) .................................................................................. 277
4.24.2 Bias and gain of the built-in frequency setting potentiometer (C22 (Pr. 922) to C25 (Pr. 923)) 278
4.25 Parameter clear/ All parameter clear ........................................... 284
4.26 Initial value change list ................................................................. 285
4.27 Check and clear of the faults history ........................................... 286
5 TROUBLESHOOTING
5.1 Reset method of protective function ............................................. 290
5.2 List of fault or alarm indications.................................................... 291
5.3 Causes and corrective actions ...................................................... 292
5.4 Correspondences between digital and actual characters ............ 302
5.5 Check first when you have a trouble ............................................. 303
5.5.1 Motor does not start.................................................................................................................... 303
5.5.2 Motor or machine is making abnormal acoustic noise................................................................ 305
5.5.3 Inverter generates abnormal noise............................................................................................. 305
5.5.4 Motor generates heat abnormally ............................................................................................... 305
5.5.5 Motor rotates in the opposite direction ....................................................................................... 306
5.5.6 Speed greatly differs from the setting ......................................................................................... 306
5.5.7 Acceleration/deceleration is not smooth ..................................................................................... 306
5.5.8 Speed varies during operation.................................................................................................... 307
5.5.9 Operation mode is not changed properly ................................................................................... 307
5.5.10 Operation panel display is not operating .................................................................................... 308
5.5.11 Motor current is too large............................................................................................................ 308
5.5.12 Speed does not accelerate ......................................................................................................... 309
5.5.13 Unable to write parameter setting............................................................................................... 309
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