N6: Online Tuning; N7: Ez Drive - YASKAWA CIPR-GA50C series Technical Manual

12.10 n: Special Adjustment
If you set n5-03 [Feed Forward Control Gain] too high, the motor speed will momentarily increase to more than
the set frequency.
◆

n6: Online Tuning

n6 parameters are used to set the online tuning function for motor line-to-line resistance.
The Online Tuning for motor line-to-line resistance is used to prevent degradation of speed control accuracy due
to motor temperature fluctuation and motor stalls due to insufficient torque.
■
n6-01: Online Tuning Selection
No.
Name
(Hex.)
n6-01 Online Tuning Selection
(0570)
0 : Disabled
1 : Line-to-Line Resistance Tuning
The drive adjusts the motor line-to-line resistance during run. This procedure is applicable for speed values 6 Hz
and less. It also adjusts the motor resistance value to increase the overload capacity in the low speed range.
2 : Voltage Correction Tuning
The drive adjusts the output voltage during run to increase overload tolerance and minimize the effects of high
temperatures on speed precision.
Note:
Setting 2 is enabled only when b8-01 = 0 [Energy Saving Control Selection = Disabled].
■
n6-05: Online Tuning Gain
No.
Name
(Hex.)
n6-05 Online Tuning Gain
(05C7)
Expert
When you use a motor that has a large secondary circuit time constant, decrease the setting value.
If the drive detects oL1 [Motor Overload], increase the setting value in 0.1-unit increments.
◆

n7: EZ Drive

The n7 parameters provide special adjustments for EZ Vector Control.
■
n7-01: Damping Gain for Low Frequency
No.
Name
(Hex.)
n7-01 Damping Gain for Low
Frequency
(3111)
Expert
Note:
• If oscillation occurs in the low speed range, increase the acceleration time or increase the setting value in 0.5-unit increments.
• To get starting torque with the setting for C4-01 [Torque Compensation Gain], decrease the setting value in 0.3-unit increments.
■
n7-05: Response Gain for Load Changes
No.
Name
(Hex.)
n7-05 Response Gain for Load
Changes
(3115)
Expert
Note:
To make tracking related to load changes better, increase the setting value in 5-unit increments. If oscillation occurs during load
changes, decrease the setting value in 5-unit increments.
718
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the type of motor data that Online Tuning uses for OLV control.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the compensation gain when n6-01 = 2 [Online Tuning Selection = Voltage Correction
Tuning]. Usually it is not necessary to change this parameter.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the oscillation suppression gain for the low speed range.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the response gain related to changes in the load.
Description
Description
Description
Description
YASKAWA SIEPC71061753A GA500 Technical Manual
Default
(Range)
0
(0 - 2)
Default
(Range)
1.0
(0.1 - 50.0)
Default
(Range)
1.0
(0.1 - 10.0)
Default
(Range)
50
(10 - 1000)