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YASKAWA ELECTRIC
SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
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C4-21: Voltage Compensation Adjust 2
No.
(Hex.)
Name
Description
Default
(Range)
C4-21
(0BCC)
Expert
Voltage
Compensation Adjust
2
Sets voltage precision compensation. Usually it is not necessary to change
this setting.
5
(0 - 10)
Note:
When there is audible noise during high-speed operation, set this parameter to
0
.
◆
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.
Control Method
Targets of Adjustment
Closed Loop V/f Control (CL-V/f)
Output frequency
•
Closed Loop Vector Control (CLV)
•
Advanced Open Loop Vector Control (AOLV)
•
Closed Loop Vector Control for PM (CLV/PM)
•
PM Advanced Open Loop Vector (AOLV/PM)
•
EZ Vector Control (EZOLV)
Torque Reference
is a speed control block diagram of each control method.
Figure 11.54 Speed Control Block Diagram for Closed Loop V/f Control (CL-V/f)
Figure 11.55 Speed Control Block Diagram for CLV, AOLV, CLV/PM, AOLV/PM, and EZOLV
Note:
The detected speed is the speed estimation value when configured such that
A1-02 = 4, 6, or 8 [Control Method Selection = AOLV,
AOLV/PM, or EZOLV]
.
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Before You Adjust ASR Parameters
•
Do Auto-Tuning and set up all motor data correctly.
•
Always make adjustments with the load connected to the motor.
•
Use analog output signals to monitor
U1-16 [SFS Output Frequency]
and
U1-05 [Motor Speed]
when you
adjust the ASR.
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ASR Adjustment Procedure for Closed Loop V/f Control (CL-V/f)
Do this procedure to adjust ASR parameters:
1. Run the motor at minimum speed and increase
C5-03 [ASR Proportional Gain 2]
as much as possible without
oscillation.
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV