Troubleshooting Without Fault Display; Typical Problems; The Parameter Settings Will Not Change - YASKAWA CIPR-GA50C series Technical Manual

7.10 Troubleshooting Without Fault Display

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
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Typical Problems

The Parameter Settings Will Not Change

The Motor Does Not Rotate After Entering Run Command
The Motor Rotates in the Opposite Direction from the Run Command
The Motor Rotates in Only One Direction
The Motor Is Too Hot
The Correct Auto-Tuning Mode Is Not Available
The Motor Stalls during Acceleration or Accel/Decel Time Is Too Long
The Drive Frequency Reference Is Different than the Controller Frequency Reference Command
The Motor Speed Is Not Stable When Using a PM Motor
There Is Too Much Motor Oscillation and the Rotation Is Irregular
Deceleration Takes Longer Than Expected When Dynamic Braking Is Enabled
The Load Falls When a Brake Is Applied
There Is Audible Noise from the Drive or Motor Cables When the Drive Is Energized
Residual Current Monitoring/Detection (RCM/RCD) Trips During Run
Motor Rotation Causes Unexpected Audible Noise from Connected Machinery
Motor Rotation Causes Oscillation or Hunting
PID Output Fault
The Starting Torque Is Not Sufficient
The Motor Rotates after the Drive Output Is Shut Off
The Output Frequency Is Lower Than the Frequency Reference
The Motor Is Making an Audible Noise
The Motor Will Not Restart after a Loss of Power
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The Parameter Settings Will Not Change
Causes
The drive is operating the motor (the drive is in Drive Mode).
Parameter A1-01 = 0 [Access Level Selection = Operation Only].
Parameter H1-xx = 1B [MFDI Function Select = Programming Lockout].
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Symptom
Stop the drive and change to Programming Mode.
Set A1-01 = 2 [Access Level Selection = Advanced Level] or A1-01 = 3 [Expert Level].
Turn ON the terminals to which H1-xx = 1B is set, and then change the parameters.
Reference
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Possible Solutions
YASKAWA SIEPC71061753A GA500 Technical Manual