xv
Using Inverters for Elevating Machines ....................................................6-169
îš‹
Brake ON/OFF Sequence...........................................................................................6-169
îš‹ Stall Prevention during Deceleration...........................................................................6-171
îš‹ Autotuning...................................................................................................................6-171
îš‹ Braking Resistor Overheating Protection....................................................................6-171
îš‹ Momentary Power Loss Restart .................................................................................6-171
îš‹ Torque Limit ................................................................................................................6-171
îš‹ I/O Open-phase Protection and Overtorque Detection...............................................6-172
îš‹ External Baseblock Signal..........................................................................................6-172
îš‹ Acceleration/Deceleration Time..................................................................................6-172
 Magnetic Contactor on the Inverter’s Output-side ......................................................6-172
îš‹ Control-related Adjustments .......................................................................................6-173
îš‹ Reducing Shock during Elevating Machine Start, Stop, Acceleration, and
Deceleration................................................................................................................6-175
îš‹ Confirming Startup Current and Reducing Carrier Frequency....................................6-178
îš‹ Overvoltage Inhibit Function (SPEC: E or Later Only)................................................6-179
7 Troubleshooting ..................................................................... 7-1
Protective and Diagnostic Functions ............................................................7-2
îš‹
Fault Detection................................................................................................................7-2
îš‹ Alarm Detection ............................................................................................................7-12
îš‹ Operation Errors ...........................................................................................................7-16
îš‹ Errors During Autotuning ..............................................................................................7-18
îš‹ Errors when Using the Digital Operator Copy Function................................................7-19
Troubleshooting ..........................................................................................7-21
îš‹
If Inverter Constants Cannot Be Set .............................................................................7-21
îš‹ If the Motor Does Not Operate......................................................................................7-22
îš‹ If the Direction of the Motor Rotation is Reversed ........................................................7-25
îš‹ If the Motor Does Not Put Out Torque or If Acceleration is Slow..................................7-25
îš‹ If the Motor Operates Higher Than the Reference .......................................................7-25
îš‹ If the Slip Compensation Function Has Low Speed Precision......................................7-26
îš‹ If There is Low Speed Control Accuracy at High-speed Rotation in
Open-loop Vector Control Method ................................................................................7-26
îš‹ If Motor Deceleration is Slow ........................................................................................7-26
îš‹ If the Motor Overheats..................................................................................................7-27
îš‹ If There is Noise When the Inverter is Started or From an AM Radio...........................7-28
îš‹ If the Ground Fault Interrupter Operates When the Inverter is Run..............................7-28
îš‹ If There is Mechanical Oscillation.................................................................................7-28
îš‹ If the Torque Generated for the Motor is Insufficient (Insufficient Power) .....................7-29
îš‹ If the Motor Rotates Even When Inverter Output is Stopped........................................7-30
îš‹ If OV is Detected When the Fan is Started, or Fan Stalls .............................................7-30
îš‹ If Output Frequency Does Not Rise to Frequency Reference ......................................7-30
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