YASKAWA FSDrive-MV1000 Parameter Manual page 136

2.3 C: Tuning
C4-08: Motor 2 Torque Compensation Primary Delay Time
n
Sets the torque compensation time for motor 2.
No.
Motor 2 Torque Compensation Primary Delay
C4-08
<1> Refer to Control Mode Dependent Parameter Default Values on page 84
u C5: Automatic Speed Regulator (ASR)
The ASR controls the motor speed in CLV control mode. It adjusts the torque reference (CLV) to minimize the difference
between frequency reference and actual motor speed.
Figure 2.27
Detected speed
Adjusting the ASR Parameters
n
Before adjusting ASR parameters make sure all motor data have been set up correctly or Auto-Tuning has been
performed.
Analog output signals should be used to monitor the frequency reference after softstarter (U1-16) and the motor speed
(U1-05) when adjusting the ASR.
functions.
Generally when tuning the ASR, first optimize the ASR gain, then adjust the integral time settings. Always make
adjustments with the load connected to the motor.
Adjusting the ASR Parameters in CLV
The drive is pre-set to use ASR settings C5-01/02 over the entire speed range in CLV. If required by the application, a
second set of ASR parameters (C5-03/04) can be automatically activated depending on the motor speed or by using a
contact input. Refer to C5-01, C5-03 / C5-02, C5-04: ASR Proportional Gain 1, 2 / ASR Integral Time 1, 2 on
page 137.
Perform the following steps for adjusting ASR parameters:
1.
Run the motor at zero speed and increase the ASR gain (C5-01) as much as possible without oscillation.
2.
Run the motor at zero speed and decrease the ASR integral time (C5-02) as much as possible without
oscillation.
3.
Run at the normal operating speed. Check for over/undershoot when changing speed and for any oscillation.
4.
Should problems occur in step 3, increase the integral time and reduce the gain.
5.
Alternatively, use different ASR settings for high and low speed. Set the values from step 1 and 2 to parameters
C5-03 and C5-04, then set an ASR switching frequency in parameter C5-07. Run the motor at a speed higher
than C5-07 and repeat step 3 while adjusting C5-01 and C5-02.
136
Name
Time
C5-01, C5-03
+
Frequency
P
reference
–
C5-02, C5-04
Figure 2.27 Speed Control Block Diagram for CLV
Refer to H4: Analog Outputs on page 198
Setting Range
0 to 60000 ms
for details on default settings.
Figure 2.27 illustrates ASR functionality.
+
Primary
filter
+
I
I C5-06
limit
C5-08
YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
Default
Torque limits
Torque reference
L7-01 to L7-04
common_TMonly
for details on setting up analog output
<1>