Mitsubishi FR-A500 Series Instruction Manual page 8

4.2.42 PID control (Pr. 128 to Pr. 134) ..................................................................................................................... 130
4.2.43 Commercial power supply-inverter switch-over function (Pr. 135 to Pr. 139) ............................................... 137
4.2.44 Output current detection function (Pr. 150, Pr. 151) ...................................................................................... 141
4.2.45 Zero current detection (Pr. 152, Pr. 153) ....................................................................................................... 142
4.2.46 RT signal activated condition selection (Pr. 155)........................................................................................... 143
4.2.47 Stall prevention function and current limit function (Pr. 156) ......................................................................... 143
4.2.48 OL signal output timer (Pr. 157)..................................................................................................................... 145
4.2.49 User group selection (Pr. 160, Pr. 173 to Pr. 176)......................................................................................... 146
4.2.50 Watt-hour meter clear/actual operation hour meter clear (Pr. 170, Pr. 171) ................................................. 147
4.2.51 Input terminal function selection (Pr. 180 to Pr. 186) .................................................................................... 147
4.2.52 Output terminal function selection (Pr. 190 to Pr. 195).................................................................................. 150
4.2.53 User initial value setting (Pr. 199).................................................................................................................. 152
4.2.54 Programmed operation function (Pr. 200 to Pr. 231)..................................................................................... 153
4.2.55 Cooling fan operation selection (Pr. 244) ...................................................................................................... 157
4.2.56 Stop selection (Pr. 250) ................................................................................................................................. 158
4.2.57 Output phase failure protection selection (Pr. 251) ....................................................................................... 159
4.2.58 Override bias/gain (Pr. 252, Pr. 253) ............................................................................................................. 159
4.2.59 Power failure-time deceleration-to-stop function (Pr. 261 to Pr. 266)........................................................... 160
4.2.60 Stop-on-contact, load torque high-speed frequency selection (Pr. 270)........................................................ 161
4.2.61 High-speed frequency control (Pr. 271 to Pr. 274) ........................................................................................ 162
4.2.62 Stop on contact (Pr. 275, Pr. 276) ................................................................................................................. 166
4.2.63 Brake sequence function (Pr. 278 to Pr. 285)................................................................................................ 169
4.2.64 Droop control (Pr. 286, Pr. 287)..................................................................................................................... 173
4.2.65 Meter (frequency meter) calibration (Pr. 900, Pr. 901) .................................................................................. 174
4.2.66 Frequency setting voltage (current) bias and gain (Pr. 902 to Pr. 905) ......................................................... 176
4.2.67 Buzzer control (Pr. 990)................................................................................................................................. 181
5 PROTECTIVE FUNCTIONS
5.1 Errors (Alarms) ...................................................................................................................................................... 182
5.1.1 Error (alarm) definitions .................................................................................................................................. 182
5.1.2 To know the operating status at the occurrence of an alarm.......................................................................... 191
5.1.3 Correspondences between digital and actual characters ............................................................................... 191
5.1.4 Alarm code output .......................................................................................................................................... 192
5.1.5 Resetting the inverter...................................................................................................................................... 192
5.2 Troubleshooting..................................................................................................................................................... 193
5.2.1 Motor remains stopped ................................................................................................................................... 193
5.2.2 Motor rotates in opposite direction.................................................................................................................. 193
5.2.3 Speed greatly differs from the setting ............................................................................................................. 193
5.2.4 Acceleration/deceleration is not smooth......................................................................................................... 193
5.2.5 Motor current is large...................................................................................................................................... 193
5.2.6 Speed does not increase................................................................................................................................ 194
5.2.7 Speed varies during operation........................................................................................................................ 194
5.2.8 Operation mode is not changed properly........................................................................................................ 194
5.2.9 Operation panel (FR-DU04) display is not provided ....................................................................................... 194
5.2.10 POWER lamp is not lit ................................................................................................................................... 194
5.2.11 Parameter write cannot be performed ........................................................................................................... 194
5.3 Precautions for Maintenance and Inspection ........................................................................................................ 195
5.3.1 Precautions for maintenance and inspection.................................................................................................. 195
5.3.2 Check items .................................................................................................................................................... 195
5.3.3 Periodic inspection ......................................................................................................................................... 195
III
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