Omron Q2V Series User Manual

7.10 Troubleshooting Without Fault Display
258 SIEPCYEUOQ2V01A Q2V Technical Manual
7.10 Troubleshooting Without Fault Display
If the drive or motor operate incorrectly, but the keypad does not show a fault or error code, refer to the items this
section.
• Motor hunting and oscillation
• Unsatisfactory motor torque
• Unsatisfactory speed precision
• Unsatisfactory motor torque and speed response
• Motor noise
◆ Typical Problems
Symptom Reference
The Parameter Settings Will Not Change 258
The Motor Does Not Rotate After Entering Run Command 259
The Motor Rotates in the Opposite Direction from the Run Command 260
The Motor Rotates in Only One Direction 260
The Motor Is Too Hot 260
The Correct Auto-Tuning Mode Is Not Available 261
The Motor Stalls during Acceleration or Accel/Decel Time Is Too Long 261
The Drive Frequency Reference Is Different than the Controller Frequency Reference Command 262
The Motor Speed Is Not Stable When Using a PM Motor 262
There Is Too Much Motor Oscillation and the Rotation Is Irregular 262
Deceleration Takes Longer Than Expected When Dynamic Braking Is Enabled 262
The Load Falls When a Brake Is Applied 263
There Is Audible Noise from the Drive or Motor Cables When the Drive Is Energized 263
Residual Current Monitoring/Detection (RCM/RCD) Trips During Run 263
Motor Rotation Causes Unexpected Audible Noise from Connected Machinery 263
Motor Rotation Causes Oscillation or Hunting 263
PID Output Fault 264
The Starting Torque Is Not Sufficient 264
The Motor Rotates after the Drive Output Is Shut Off 264
The Output Frequency Is Lower Than the Frequency Reference 264
The Motor Is Making an Audible Noise 264
The Motor Will Not Restart after a Loss of Power 265
◆ The Parameter Settings Will Not Change
Causes Possible Solutions
The drive is operating the motor (the drive is in Drive Mode). Stop the drive and change to Programming Mode.
Parameter A1-01 = 0 [Access Level = Monitor only]. Set A1-01 = 2 [Access Level = Standard Parameters] or A1-01 = 3 [Expert Parameters].
Parameter H1-xx = 7C [MFDI Function Select = Prg Lock]. Turn ON the terminals to which H1-xx = 7C is set, and then change the parameters.

Omron Q2V Series Specifications

General

Brand	Omron
Model	Q2V Series
Category	Inverter
Language	English