12.4 C: Tuning
724 YASKAWA SIEPC71061737B GA800 Drive Technical Reference
Note:
Set C4-20 [Voltage Compensation Adjust 1] ≠ 0 to enable this parameter.
■ C4-20: Voltage Compensation Adjust 1
No.
(Hex.)
Name Description
Default
(Range)
C4-20
(0BCB)
Expert
Voltage Compensation
Adjust 1
Sets voltage precision compensation. Usually it is not necessary to change this setting.
120
(0 - 200)
Note:
Set C4-20 = 0 when noise occurs during low-speed operation.
■ C4-21: Voltage Compensation Adjust 2
No.
(Hex.)
Name Description
Default
(Range)
C4-21
(0BCC)
RUN
Expert
Voltage Compensation
Adjust 2
Sets voltage precision compensation. Usually it is not necessary to change this setting.
5
(0 - 10)
Note:
Set C4-21 = 0 when noise occurs during high-speed operation.
■ C4-23: Current Control Gain
No.
(Hex.)
Name Description
Default
(Range)
C4-23
(1583)
RUN
Expert
Current Control Gain
Current control gain. Usually it is not necessary to change this parameter.
1.00
(0.50 - 2.50)
◆ C5: Auto Speed Regulator (ASR)
The ASR adjusts the output frequency or torque reference to decrease the difference between frequency reference and
motor speed. The control method sets the parameter that you must adjust.
A1-02 [Control Method Selection] Targets of Adjustment
1: Closed Loop V/f Control (CL-V/f) Output Frequency
• 3: Closed Loop Vector Control (CLV)
• 4: Advanced Open Loop Vector Control (AOLV)
• 6: PM Advanced Open Loop Vector Control (AOLV/PM)
• 7: PM Closed Loop Vector Control (CLV/PM)
• 8: EZ Vector Control (EZOLV)
Torque Reference
The speed control block diagrams of the respective control methods are shown in Figure 12.53 and Figure 12.54.
Figure 12.53 Speed Control Block Diagram for CL-V/f
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