YASKAWA GA800 Technical Reference page 220

4.8 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]
L3-25 [Load Inertia Ratio]
220
Table 4.14 Input Data for Control Tuning
Parameters Unit
T3-01 Hz
T3-02 Rad
T3-03 Kg∙m 2
T3-04 Hz
Table 4.15
Table 4.15 Parameters set in Control Tuning
Inertia Tuning ASR Tuning
-
-
-
-
x
x
x
x
-
x
x
Auto-Tuning Mode
ASR (Speed
Inertia Tuning
Regulator)
(0)
(1)
x x
x x
x x
- x
to the best values.
Deceleration Rate Tuning
- x
*1
- x
- -
x -
x -
x -
x -
x -
- -
x -
x -
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
(T3-00 Value)
Dec Rate Tuning KEB Tuning
(2)
-
-
-
-
KEB Tuning
-
-
*2
x
-
-
-
-
-
*3
x
-
x
(3)
-
-
-
-