Yaskawa CIMR-UU4A0216F [374/644] Troubleshooting without fault display

Yaskawa CIMR-UU4A0052A [374/644] Troubleshooting without fault display
6.10 Troubleshooting without Fault Display
This section describes troubleshooting problems that do not trip an alarm or fault.
The following symptoms indicate that the drive is not set correctly for proper performance with the motor. Refer to Motor
Performance Fine-Tuning on page 324 for guidance on troubleshooting.
Motor hunting and oscillation
Poor motor torque
Poor speed precision
Poor motor torque and speed response
Motor noise
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Common Problems
Common Problems Page
Cannot Change Parameter Settings 374
Motor Does Not Rotate Properly after Pressing RUN Button or after
Entering External Run Command
Motor Does Not Rotate 375
Motor Rotates in the Opposite Direction from the Run Command 376
Motor Rotates in One Direction Only 376
Motor is Too Hot 376
Drive Does Not Allow Selection of Rotational Auto-Tuning 377
oPE02 Error Occurs When Lowering the Motor Rated Current Setting 377
Motor Stalls During Acceleration or With Large Loads 377
Drive Frequency Reference Differs from the Controller Frequency Reference Command 378
Excessive Motor Oscillation and Erratic Rotation 378
Noise From Drive or Motor Cables When the Drive is Powered On 378
Ground Fault Circuit Interrupter (GFCI) Trips During Run 379
Connected Machinery Vibrates When Motor Rotates
Unexpected Noise from Connected Machinery 379
Oscillation or Hunting 379
PID Output Fault 379
Insufficient Starting Torque 380
Motor Rotates After the Drive Output is Shut Off (Motor Rotates During DC Injection Braking) 380
Output Frequency is not as High as Frequency Reference 380
Buzzing Sound from Motor at 2 kHz 380
Unstable Motor Speed when Using PM or IPM 380
Motor Does Not Restart after Power Loss 381
The Safety Controller Does Not Recognize Safe Disable Monitor Output Signals (Terminals DM+ and DM-) 381
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Cannot Change Parameter Settings
Cause Possible Solutions
The drive is running the motor
(i.e., the Run command is present).
Stop the drive and switch over to the Programming Mode.
Most parameters cannot be edited during run.
The Access Level is set to restrict access to parameter
settings.
Set the Access Level to allow parameters to be edited (A1-01 = 2).
The operator is not in the Parameter Setup Mode
(the screen will display “PAr”).
See what mode the operator is currently set for.
Parameters cannot be edited when in the Setup Mode (“STUP”). Switch modes so that “PAr”
appears on the screen. Refer to The Drive and Programming Modes on page 113.
A multi-function contact input terminal is set to allow
or restrict parameter editing
(H1-01 through H1-08 = 1B).
When the terminal is open, parameters cannot be edited.
Turn on the multi-function contact input set to 1B.
6.10 Troubleshooting without Fault Display
374
YASKAWA ELECTRIC SIEP C710636 04C U1000 Industrial MATRIX Drive Technical Manual

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