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CONTENTS
5.15.6 Modbus-RTU communication specification .................................................................................................. 579
5.15.7 USB device communication ......................................................................................................................... 594
5.15.8 Automatic connection with GOT................................................................................................................... 595
5.16 (G) Control parameters 596
5.16.1 Manual torque boost .................................................................................................................................... 597
5.16.2 Base frequency, voltage .............................................................................................................................. 598
5.16.3 Load pattern selection ................................................................................................................................. 600
5.16.4 Energy saving control .................................................................................................................................. 602
5.16.5 Adjustable 5 points V/F ............................................................................................................................... 603
5.16.6 SF-PR slip amount adjustment mode .......................................................................................................... 604
5.16.7 DC injection brake, zero speed control, and servo lock ............................................................................... 605
5.16.8 Output stop function ..................................................................................................................................... 611
5.16.9 Stop selection............................................................................................................................................... 613
5.16.10 Regenerative brake selection and DC feeding mode................................................................................... 614
5.16.11 Regeneration avoidance function................................................................................................................. 621
5.16.12 Increased magnetic excitation deceleration ................................................................................................ 624
5.16.13 Slip compensation ....................................................................................................................................... 625
5.16.14 Encoder feedback control ............................................................................................................................ 626
5.16.15 Droop control ............................................................................................................................................... 628
5.16.16 Speed smoothing control ............................................................................................................................. 630
5.17 Parameter clear / all parameter clear 631
5.18 Copying and verifying parameters on the operation panel 632
5.18.1 Parameter copy ............................................................................................................................................ 632
5.18.2 Parameter verification .................................................................................................................................. 634
5.19 Copying and verifying parameters using USB memory 635
5.20 Checking parameters changed from their initial values (Initial value change list) 638
6 PROTECTIVE FUNCTIONS 639
6.1 Inverter fault and alarm indications 640
6.2 Reset method for the protective functions 640
6.3 Check and clear of the faults history 641
6.4 The list of fault displays 643
6.5 Causes and corrective actions 645
6.6 Check first when you have a trouble 664
6.6.1 Motor does not start ..................................................................................................................................... 664
6.6.2 Motor or machine is making abnormal acoustic noise ................................................................................. 666
6.6.3 Inverter generates abnormal noise............................................................................................................... 666
6.6.4 Motor generates heat abnormally................................................................................................................. 667
6.6.5 Motor rotates in the opposite direction ......................................................................................................... 667
6.6.6 Speed greatly differs from the setting........................................................................................................... 667
6.6.7 Acceleration/deceleration is not smooth....................................................................................................... 668
6.6.8 Speed varies during operation ..................................................................................................................... 668
6.6.9 Operation mode is not changed properly ..................................................................................................... 669
6.6.10 Operation panel (FR-DU08) display is not operating ................................................................................... 669
6.6.11 Motor current is too large ............................................................................................................................. 669
6.6.12 Speed does not accelerate........................................................................................................................... 670
6.6.13 Unable to write parameter setting ................................................................................................................ 671
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