YASKAWA CIMR-F7A - Page 16

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