YASKAWA GA700 Technical Manual page 198

3.8 Auto-Tuning
Input Data
Test Signal Frequency
Test Signal Amplitude
Motor Inertia
System Response
Frequency
■
Inertia Tuning
Inertia Tuning uses the motor speed and torque reference to estimate the system inertia and automatically sets the
drive parameters related to the inertia ratio of the machinery and motor. Use Inertia Tuning for Feed Forward
control or when H1-xx = 7A [MFDI Function Select = KEB Ride-Thru 2 Activate (N.C.)].
Inertia tuning identifies the load inertia and optimizes the speed loop gain and feed forward gain to get a high
level of control capability. You can set the speed response without thinking about the load, which increases the
precision when synchronizing multiple drives. Since the motor can continue to operate during a power outage,
Inertia Tuning keeps the best ramp to stop deceleration curve for KEB Ride-Thru.
■
ASR Tuning
ASR Tuning estimates the motor load inertia and automatically sets the parameters. ASR Tuning also uses the
measured load inertia value to do an automatic adjustment after calculating the proportional gain of speed control
(ASR).
■
Deceleration Rate Tuning
Deceleration Rate Tuning automatically sets the deceleration rate to prevent an ov [Overvoltage] fault during
motor deceleration. Set C1-11 [Accel/Decel Time Switchover Freq] first to automatically set parameters C1-02
[Deceleration Time 1] (high speed range) and C1-08 [Deceleration Time 4] (low speed range).
■
KEB Tuning
KEB Tuning automatically sets parameters used for the KEB Ride-Thru function and for the overvoltage
suppression function.
Control Tuning automatically sets the parameters in
Parameters
Automatically Set
C1-02 [Deceleration Time
1]
C1-08 [Deceleration Time
4]
C1-09 [Fast Stop Time]
C5-01 [ASR Proportional
Gain 1]
C5-17 [Motor Inertia]
C5-37 [Motor 2 Inertia]
C5-18 [Load Inertia
Ratio]
C5-38 [Motor 2 Load
Inertia Ratio]
L2-06 [Kinetic Energy
Backup Decel Time]
L3-24 [Motor Accel Time
@ Rated Torque]
198
Table 3.14 Input Data for Control Tuning
Parameters Unit
T3-01 Hz
T3-02 Rad
T3-03 Kg∙m
T3-04 Hz
Table 3.15 Parameters set in Control Tuning
Inertia Tuning ASR Tuning
-
-
-
-
x
x
x
x
-
x
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Inertia ASR (Speed
Tuning Regulator)
(0)
x
x
2
x
-
Table 3.15 to the best values.
Deceleration Rate
-
-
-
x
x
x
x
x
-
x
Auto-Tuning Mode
(T3-00 Value)
Dec Rate
Tuning
(1) (2)
x -
x -
x -
x -
KEB Tuning
Tuning
x
x
*1
-
-
-
-
-
-
-
-
KEB Tuning
(3)
-
-
-
-
-
-
x
*2
-
-
-
-
-
x
*3
-