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5.3 C: Tuning
222
YASKAWA ELECTRIC
SIEP C710636 02B YASKAWA U1000 Technical Manual
■
C4-05: Torque Compensation Time Constant (OLV)
This parameter is the time constant for applying the torque compensation at start that is set to C4-03 and C4-04.
■
C4-07: Motor 2 Torque Compensation Gain
Functions for motor 2 in the same way that C4-01 functions for motor 1.
C3-01: Slip Compensation Gain on page 218
for details on adjusting this parameter.
◆
C5: Automatic Speed Regulator (ASR)
The ASR is used for controlling the motor speed in V/f w/PG, CLV, AOLV/PM, and CLV/PM control modes. It adjusts
the output frequency (V/f w/PG) or torque reference (CLV, AOLV/PM, CLV/PM) in order to minimize the difference
between frequency reference and actual motor speed.
and
illustrate how ASR works.
Figure 5.36
Figure 5.36 Speed Control Block Diagram for V/f Control with PG
Figure 5.37
<1> Advanced Open Loop Vector Control for PM motors estimates the speed using the motor model and does not require an encoder
feedback signal.
Figure 5.37 Speed Control Block Diagram for CLV, AOLV/PM and CLV/PM
■
Adjusting the ASR Parameters
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 soft starter (U1-16) and the motor speed
(U1-05) when adjusting the ASR. Refer to
H4: Multi-Function Analog Outputs on page 291
for details on setting up
analog output 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.
No.
Parameter Name
Setting Range
Default
C4-04
Torque Compensation at Reverse Start
-200.0 to 0.0%
0.0%
No.
Parameter Name
Setting Range
Default
C4-05
Torque Compensation Time Constant
0 to 200 ms
10 ms
No.
Parameter Name
Setting Range
Default
C4-07
Motor 2 Torque Compensation Gain
0.00 to 2.50
1.00
P
I
+
+
+
-
+
+
Output frequency
C5-01
C5-03
C5-02, C5-04
C5-05
Frequency
reference
Detected speed
Change
rate
limiter
ASR limit
<1>
P
I
+
+
+
-
C5-02, C5-04
C5-06
I
C5-08
C5-01, C5-03
Frequency
reference
Detected speed
Torque limits
Torque reference
limit
Primary
filter
L7-01 to L7-04
SIEP_C710636_02B_1_0.book 222 ページ 2015年11月25日 水曜日 午後4時56分