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 290 for guidance on troubleshooting.
• Motor hunting and oscillation
• Poor motor torque
• Poor speed precision
• Poor motor torque and speed response
• Motor noise
u
Common Problems
Common Problems Page
Cannot Change Parameter Settings 336
Motor Does Not Rotate Properly after Pressing RUN Button
or after Entering External Run Command
Motor Does Not Rotate 337
Motor Rotates in the Opposite Direction from the Run
Command
338
Motor Rotates in One Direction Only 338
Motor is Too Hot 338
Drive Does Not Allow Selection of Rotational Auto-Tuning 339
oPE02 Error Occurs When Lowering the Motor Rated Current Setting 339
Motor Stalls During Acceleration or With Large Loads 339
Drive Frequency Reference Differs from the Controller Frequency Reference Command 340
Excessive Motor Oscillation and Erratic Rotation 340
Deceleration Takes Longer Than Expected with Dynamic Braking Enabled 340
Noise From Drive or Output Lines When the Drive is Powered On 341
Ground Fault Circuit Interrupter (GFCI) Trips During Run 341
Connected Machinery Vibrates When Motor Rotates
Unexpected Noise from Connected Machinery 341
Oscillation or Hunting 341
PID Output Fault 342
Insufficient Starting Torque 342
Motor Rotates After the Drive Output is Shut Off (Motor Rotates During DC Injection Braking) 342
Output Frequency is not as High as Frequency Reference 342
Buzzing Sound from Motor at 2 kHz 342
Unstable Motor Speed when Using PM or IPM 343
Motor Does Not Restart after Power Loss 343
u
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 84.
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
336
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
To Next Page
Loading...
Need help?
General
