117
CHAPTER 8
Communications
8-1 Protective and Diagnostic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
8-1-1 Fault Detection (Fatal Error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
8-1-2 Warning Detection (Nonfatal Error) . . . . . . . . . . . . . . . . . . . . . . . . . 121
8-2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
8-2-1 Parameters Fail Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
8-2-2 Motor Fails to Operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
8-2-3 Motor Rotates in the Wrong Direction . . . . . . . . . . . . . . . . . . . . . . . 124
8-2-4 Motor Outputs No Torque or Acceleration is Slow . . . . . . . . . . . . . 125
8-2-5 Motor Deceleration is Slow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
8-2-6 Motor Burns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
8-2-7 Controller or AM Radio Receives Noise when Inverter is Started . . 126
8-2-8 Ground Fault Interrupter is Actuated when Inverter is Started . . . . . 126
8-2-9 Mechanical Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
8-2-10 Motor Rotates after Output of Inverter is Turned Off. . . . . . . . . . . . 127
8-2-11 Detects OV when Motor Starts and Motor Stalls . . . . . . . . . . . . . . . 127
8-2-12 Output Frequency Does Not Reach Frequency Reference . . . . . . . . 127
8-2-13 Inverter Does Not Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
8-3 Maintenance and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
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