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Mitsubishi Electric Manuals
Inverter
FR-D720-008
Instruction manual
Mitsubishi Electric FR-D720-008 Instruction Manual page 8
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(131 pages)
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Contents
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4.13.3 Earth (ground) fault detection at start (Pr. 249)
......................................................................... 144
4.14 Energy saving operation
................................................................ 145
4.14.1 Optimum excitation control (Pr. 60)
........................................................................................... 145
4.15 Motor noise, EMI measures, mechanical resonance
.................... 146
4.15.1 PWM carrier frequency and Soft-PWM control (Pr. 72, Pr. 240, Pr. 260)
................................. 146
4.15.2 Speed smoothing control (Pr. 653)
............................................................................................ 147
4.16 Frequency setting by analog input (terminal 2, 4)
....................... 148
4.16.1 Analog input selection (Pr. 73, Pr. 267)
..................................................................................... 148
4.16.2 Response level of analog input and noise elimination (Pr. 74)
.................................................. 150
4.16.3 Bias and gain of frequency setting voltage (current)
(Pr. 125, Pr. 126, Pr. 241, C2 (Pr. 902) to C7 (Pr. 905))
........................................................... 151
4.17 Misoperation prevention and parameter setting restriction
........ 156
4.17.1 Reset selection/disconnected PU detection/PU stop selection (Pr. 75)
.................................... 156
4.17.2 Parameter write disable selection (Pr. 77)
................................................................................. 159
4.17.3 Reverse rotation prevention selection (Pr. 78)
.......................................................................... 160
4.17.4 Extended parameter display (Pr. 160)
....................................................................................... 160
4.17.5 Password function (Pr. 296, Pr. 297)
......................................................................................... 161
4.18 Selection of operation mode and operation location
................... 163
4.18.1 Operation mode selection (Pr. 79)
............................................................................................. 163
4.18.2 Operation mode at power-on (Pr. 79, Pr. 340)
.......................................................................... 173
4.18.3 Start command source and frequency command source during communication
operation (Pr. 338, Pr. 339, Pr. 551)
......................................................................................... 174
4.19 Communication operation and setting
......................................... 178
4.19.1 Wiring and configuration of PU connector
................................................................................. 178
4.19.2 Initial settings and specifications of RS-485 communication
(Pr. 117 to Pr. 120, Pr. 123, Pr. 124, Pr. 549)
........................................................................... 181
4.19.3 Operation selection at communication error occurrence (Pr. 121, Pr. 122, Pr. 502)
................. 182
4.19.4 Communication EEPROM write selection (Pr. 342)
.................................................................. 185
4.19.5 Mitsubishi inverter protocol (computer link communication)
...................................................... 186
4.19.6 Modbus RTU communication specifications
(Pr. 117, Pr. 118, Pr. 120, Pr. 122, Pr. 343, Pr. 502, Pr. 549)
................................................... 198
4.20 Special operation and frequency control
..................................... 210
4.20.1 PID control (Pr. 127 to Pr. 134, Pr. 575 to Pr. 577)
................................................................... 210
4.20.2 Dancer control (Pr. 44, Pr. 45, Pr. 128 to Pr. 134)
.................................................................... 218
4.20.3 Regeneration avoidance function (Pr. 665, Pr. 882, Pr. 883, Pr. 885, Pr. 886)
......................... 224
4.21 Useful functions
............................................................................ 226
4.21.1 Cooling fan operation selection (Pr. 244)
.................................................................................. 226
4.21.2 Display of the life of the inverter parts (Pr. 255 to Pr. 259)
........................................................ 227
IV
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This manual is also suitable for:
Fr-d740-012
Fr-d710w-008
Fr-d720s-008
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