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IV
CONTENTS
5.10 Motor brake and stop operation..................................................... 135
5.10.1 DC injection brake (Pr. 10 to Pr. 12).......................................................................................... 135
5.10.2 Selection of a regenerative brake (Pr. 30, Pr. 70) ..................................................................... 136
5.10.3 Stop selection (Pr. 250) ............................................................................................................. 138
5.10.4 Stop-on contact control function (Pr. 6, Pr. 48, Pr. 270, Pr. 275, Pr. 276) ................................ 139
5.11 I/O signal control ............................................................................ 141
5.11.1 Operation of start signals (STF, STR signal)............................................................................. 141
5.11.2 Reset cancel signal (READY signal) and inverter running signal (RUN signal) ........................ 142
5.11.3 Second function selection signal (RT signal)............................................................................. 143
5.11.4 Inverter output shutoff signal (MRS signal, Pr. 17).................................................................... 143
5.11.5 Detection of output frequency (SU, FU signal, Pr. 41 to Pr. 43)................................................ 144
5.11.6 Output current detection function (Y12 signal, Y13 signal, Pr. 150 to Pr. 153) ......................... 145
5.12 Monitor display and monitor output signal.................................... 146
5.12.1 Speed display and speed setting (Pr. 37).................................................................................. 146
5.12.2 Monitor display selection of the operation panel
(Pr. 52, Pr. 170, Pr. 171, Pr. 268, Pr. 563, Pr. 564)................................................................... 147
5.13 Operation selection at power failure and instantaneous power
failure.............................................................................................. 151
5.13.1 Automatic restart after instantaneous power failure/flying start
(Pr. 57, Pr. 58, Pr. 96, Pr. 162, Pr. 165, Pr. 298, Pr. 299, Pr. 611) ........................................... 151
5.13.2 Power-failure deceleration stop function (Pr. 261) .................................................................... 156
5.14 Operation setting at fault occurrence ........................................... 158
5.14.1 Retry function (Pr. 65, Pr. 67 to Pr. 69) ..................................................................................... 158
5.14.2 Input/output phase loss protection selection (Pr. 251, Pr. 872)................................................. 160
5.14.3 Earth (ground) fault detection at start (Pr. 249) ......................................................................... 160
5.14.4 Display and erasure of communication error occurrence count (Pr. 501) ................................. 161
5.15 Energy saving operation................................................................. 162
5.15.1 Optimum excitation control (Pr. 60) ........................................................................................... 162
5.16 Motor noise, EMI measures, mechanical resonance .................... 163
5.16.1 PWM carrier frequency and soft-PWM control (Pr. 72, Pr. 240)................................................ 163
5.16.2 Speed smoothing control (Pr. 653)............................................................................................ 164
5.17 Misoperation prevention and parameter setting restriction......... 165
5.17.1 Reset selection/PU stop selection (Pr. 75) ................................................................................ 165
5.17.2 Parameter write disable selection (Pr. 77)................................................................................. 166
5.17.3 Reverse rotation prevention selection (Pr. 78) .......................................................................... 167
5.17.4 Extended parameter display and user group function (Pr. 160, Pr. 172 to Pr. 174).................. 167
5.17.5 Password function (Pr. 296, Pr. 297)......................................................................................... 169
5.18 Special operation and frequency control ...................................... 171
5.18.1 Jog operation (Pr. 15, Pr. 16) .................................................................................................... 171