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Mitsubishi Electric FR-B-750 to 75K Instruction Manual Page 7

Fr-b-750 to 75k (200v class), fr-b-750 to 110k (400v class).
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4.20.6 Regeneration avoidance function (Pr. 665, Pr. 882 to Pr. 886) ............................................ 244
4.21 Useful functions.............................................................................................. 246
4.21.1 Cooling fan operation selection (Pr. 244) ............................................................................. 246
4.21.2 Display of the life of the inverter parts (Pr. 255 to Pr. 259)................................................... 247
4.21.3 Maintenance timer alarm (Pr. 503, Pr. 504) ......................................................................... 249
4.21.4 Current average value monitor signal (Pr. 555 to Pr. 557) ................................................... 250
4.21.5 Free parameter (Pr. 888, Pr. 889) ........................................................................................ 252
4.22 Setting of the parameter unit and operation panel ...................................... 253
4.22.1 PU display language selection (Pr. 145) .............................................................................. 253
4.22.3 Buzzer control (Pr. 990)........................................................................................................ 255
4.22.4 PU contrast adjustment (Pr. 991) ......................................................................................... 255
4.23 Parameter clear ............................................................................................... 256
4.24 All parameter clear.......................................................................................... 257
4.25 Parameter copy and parameter verification ................................................. 258
4.25.1 Parameter copy .................................................................................................................... 258
4.25.2 Parameter verification........................................................................................................... 259
4.26 Check and clear of the alarm history ............................................................ 260
5
5.1
Reset method of protective function ............................................................. 264
5.2
List of alarm display ........................................................................................ 265
5.3
Causes and corrective actions ....................................................................... 266
5.4
5.5
Check first when you have troubles .............................................................. 279
5.5.1
Motor does not start............................................................................................................... 279
5.5.2
Motor generates abnormal noise........................................................................................... 279
5.5.3
Motor generates heat abnormally .......................................................................................... 279
5.5.4
Motor rotates in opposite direction ........................................................................................ 279
5.5.5
Speed greatly differs from the setting .................................................................................... 280
5.5.6
Acceleration/deceleration is not smooth ................................................................................ 280
5.5.7
Motor current is large............................................................................................................. 280
5.5.8
Speed does not increase ....................................................................................................... 280
V
263

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