YASKAWA GA700 Technical Manual page 655

Control method
Closed Loop V/f Control (CL-V/f)
• 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)
Figure 11.50 is a speed control block diagram of each control mode.
Figure 11.50 Speed Control Block Diagram for Closed Loop V/f Control (CL-V/f)
Figure 11.51 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 = Advanced
OpenLoop Vector Control (AOLV), PM Open Loop Vector Control (AOLV/PM), or EZ Open Loop Vector Control (EZOLV).
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Before Adjusting ASR Parameters
• Perform Auto-Tuning and set up all motor data correctly prior to adjusting ASR parameters.
• Always make adjustments with the load connected to the motor.
• Use analog output signals to monitor U1-16 [Output Freq afterSFS] and U1-05 [Motor Speed] when adjusting
the ASR.
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ASR Adjustment Procedure for Closed Loop V/f Control (CL-V/f)
Perform the following steps for adjusting ASR parameters:
1. Run the motor at minimum speed and increase C5-03 [ASR Proportional Gain 2] as much as possible without
oscillation.
2. Run the motor at minimum speed and decrease C5-04 [ASR Integral Time 2] as much as possible without
oscillation.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Figure 11.52 ASR Gain and Integral Time Adjustment
Targets of adjustment
Output frequency
Torque Reference
11.4 C: Tuning
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