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IV
CONTENTS
4.13.3 Reference of the terminal FM (pulse train output) (Pr.55, Pr.56) .............................................. 161
4.13.4 Terminal FM calibration (calibration parameter C0 (Pr.900)) .................................................... 162
4.14 Operation setting at fault occurrence ........................................... 164
4.14.1 Retry function (Pr.65, Pr.67 to Pr.69) ........................................................................................ 164
4.14.2 Input/output phase loss protection selection (Pr.251, Pr.872)................................................... 166
4.14.3 Earth (ground) fault detection at start (Pr.249) .......................................................................... 166
4.14.4 Overspeed detection (Pr.374) .................................................................................................. 167
4.15 Speed setting by analog input (terminal 2, 4) ............................... 168
4.15.1 Analog input selection (Pr.73, Pr.267)....................................................................................... 168
4.15.2 Setting the speed by analog input (voltage input/current input) ................................................ 171
4.15.3 Response level of analog input and noise elimination (Pr.74)................................................... 172
4.15.4 Bias and gain of speed setting voltage (current)
(Pr.125, Pr.126, Pr.241, C2 (Pr.902) to C7 (Pr.905)) ................................................................ 173
4.16 Misoperation prevention and parameter setting restriction......... 178
4.16.1 Reset selection/disconnected PU detection/PU stop selection (Pr.75) ..................................... 178
4.16.2 Parameter write disable selection (Pr.77).................................................................................. 181
4.16.3 Reverse rotation prevention selection (Pr.78) ........................................................................... 182
4.16.4 Extended parameter display (Pr.160)........................................................................................ 182
4.16.5 Password function (Pr.296, Pr.297)........................................................................................... 183
4.17 Selection of operation mode and operation location.................... 186
4.17.1 Operation mode selection (Pr.79).............................................................................................. 186
4.17.2 Operation mode at power-ON (Pr.79, Pr.340)........................................................................... 194
4.17.3 Start command source and speed command source during communication operation (Pr.338,
Pr.339, Pr.550, Pr.551).............................................................................................................. 195
4.18 Communication operation and setting .......................................... 201
4.18.1 Wiring and configuration of PU connector................................................................................. 201
4.18.2 Initial settings and specifications of RS-485 communication
(Pr.117 to Pr.120, Pr.123, Pr.124, Pr.549) ................................................................................ 204
4.18.3 Operation selection at communication error occurrence (Pr.121, Pr.122, Pr.502).................... 205
4.18.4 Communication EEPROM write selection (Pr.342) ................................................................... 208
4.18.5 Mitsubishi inverter protocol (computer link communication)...................................................... 209
4.18.6 Modbus-RTU communication specifications
(Pr.117, Pr.118, Pr.120, Pr.122, Pr.343, Pr.502, Pr.549).......................................................... 222
4.18.7 USB communication (Pr. 547, Pr. 548) ..................................................................................... 234
4.19 Special operation and speed control............................................. 235
4.19.1 PID control (Speed control) (Pr.127 to Pr.134).......................................................................... 235
4.19.2 Regeneration avoidance function (Pr.665, Pr.882, Pr.883, Pr.885, Pr.886).............................. 242
4.20 Useful functions ............................................................................. 244
4.20.1 Cooling fan operation selection (Pr. 244) .................................................................................. 244
4.20.2 Display of the life of the drive unit parts (Pr.255 to Pr.259) ....................................................... 245
4.20.3 Maintenance timer alarm (Pr.503, Pr.504) ................................................................................ 248