Omron RX Series - Speed Control; Speed Control Gain Parameters

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6 Vector Control
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
6-4 Speed Control
6
6-4-1 Speed Control Gain Parameters
6-4 Speed Control
Sensorless vector control, 0-Hz sensorless vector control, or Sensor vector control, when enabled,
configures a speed control loop inside the inverter.
By configuring a speed control loop, it improves the accuracy of speed control.
To improve the responsiveness in load operation, adjust the following speed control loop gain
parameters.
Configure the speed control loop gain parameters to improve the responsiveness in load operation.
Adjust the following gain parameters while repeating a typical application operation and, when you are
sure that the responsiveness has improved, fix the settings.
• If vibration or hunting occurs before adjusting the 1st/2nd PI Proportional Gain (H050/H250) or
1st/2nd PI Integral Gain (H051/H251) value, gradually decrease the 1st/2nd Speed Response
(H005/H205) value to improve the condition.
• Gradually increase the 1st/2nd PI Proportional Gain (H050/H250) value to make sure that the speed
responsiveness has improved.
• Next, gradually increase the 1st/2nd PI Integral Gain (H051/H251) value to make sure that a sufficient
holding force is obtained during stop.
• If vibration or overshooting/undershooting occurs, decrease the PI Integral Gain value to improve the
condition.
• If adjusting the PI Proportional Gain and PI Integral Gain settings still does not provide sufficient
responsiveness, gradually increase the 1st/2nd Speed Response (H005/H205) to improve the
condition. If vibration or hunting occurs as you improve the speed responsiveness, further adjustment
is difficult. Restore the previous setting.
Parameter No. Function name Data Default data Unit
A044/A244 1st/2nd Control Method
03: Sensorless vector control
04: 0-Hz sensorless vector control
05: Sensor vector control (V2)
00 –
P012
V2 Control Mode
Selection
00: ASR (Speed control mode)
6-4-1 Speed Control Gain Parameters
Parameter No. Function name Data Default data Unit
H005/H205 1st/2nd Speed Response
0.001 to 9.999
10.00 to 80.00
(10.000 to 80.000)
1.590 –
H050/H250 1st/2nd PI Proportional Gain 0.0 to 999.9, 1000. 100.0 –
H051/H251 1st/2nd PI Integral Gain 0.0 to 999.9, 1000. 100.0 –
Frequency
Reference
A001
Motor
PI Proportional Gain
H050/H250
Inverter
Output
PI Integral Gain
H051/H251
Speed Feedback
•
Sensorless Vector Control: Internal calculations speed
• Sensor Vector Control: PG feedback