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IV
2.14.2 Alarm history clear (ECL )............................................................................140
2.15 Communication parameters......................................................141
2.15.1 Communication settings (n1 to n7 , n11 ) ...................................................143
2.15.2 Operation and speed command source (n8 , n9 ) .......................................158
2.15.3 Link startup mode selection (n10 )...............................................................159
2.15.4 EEPROM write selection (n12 ) ...................................................................161
2.16 Parameter unit (FR-PU04) setting.............................................162
2.16.1 PU display language selection (n13 ) ..........................................................162
2.16.2 PU buzzer control (n14 )..............................................................................162
2.16.3 PU contrast adjustment (n15 ) .....................................................................163
2.16.4 PU main display screen data selection (n16 )..............................................163
2.16.5 Disconnected PU detection/PU setting lock selection (n17 ).......................164
3. PROTECTIVE FUNCTIONS 167
3.1 Errors (Alarms)..........................................................................168
3.1.1 Error (alarm) definitions ...............................................................................169
3.1.2 To know the operating status at the occurrence of alarm
(only when FR-PU04 is used) ......................................................................177
3.1.3 Correspondence between digital and actual characters..............................177
3.1.4 Resetting the inverter...................................................................................177
3.2 Troubleshooting ........................................................................178
3.2.1 Motor remains stopped ................................................................................178
3.2.2 Motor rotates in opposite direction...............................................................179
3.2.3 Speed greatly differs from the setting ..........................................................179
3.2.4 Acceleration/deceleration is not smooth ......................................................179
3.2.5 Motor current is large...................................................................................179
3.2.6 Speed does not increase .............................................................................179
3.2.7 Speed varies during operation.....................................................................179
3.2.8 Operation mode is not changed properly.....................................................180
3.2.9 Operation panel display is not operating......................................................180
3.2.10 Parameter write cannot be performed .........................................................180
3.2.11 Motor produces annoying sound..................................................................180
3.3 Precautions for maintenance and inspection ............................181
3.3.1 Precautions for maintenance and inspection...............................................181
3.3.2 Inspection item.............................................................................................181
3.3.3 Periodic inspection.......................................................................................181
3.3.4 Insulation resistance test using megger.......................................................182
3.3.5 Pressure test................................................................................................182
3.3.6 Daily and periodic inspection .......................................................................183
3.3.7 Replacement of parts...................................................................................186
3.3.8 Measurement of main circuit voltages, currents and powers.......................191