YASKAWA GA800 Programming Manual page 594

3.5 Auto-Tuning
Application Conditions and
Mode T3-00
To automatically adjust the deceleration
Deceleration
2 rate to prevent an ov [Overvoltage]
Rate Tuning
fault.
• To automatically adjust parameter
settings to prevent an ov
[Overvoltage] fault with the KEB
KEB Tuning 3
Ride-Thru function.
• When L3-11 = 1 [Overvoltage
Suppression Select = Enabled].
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]
594
V/f
Benefits
(0)
x
x
Table 3.12 Input Data for Control Tuning
Parameters Unit
T3-01 Hz
T3-02 Rad
2
T3-03 Kg∙m
T3-04 Hz
Table 3.13
Table 3.13 Parameters set in Control Tuning
Inertia Tuning ASR Tuning
-
-
-
-
x
Applicable Control Method (A1-02 Value)
CL-V/f OLV CLV AOLV
(1) (2) (3) (4)
x x x
x x x
ASR (Speed
Inertia Tuning
Regulator)
(0)
(1)
x x
x x
x x
- x
to the best values.
Deceleration Rate Tuning
-
- x
-
x
x
YASKAWA TOEPYAIGA8002B GA800 Drive Programming
AOLV/
OLV/PM CLV/PM
PM
(5) (7)
(6)
x x x x
x x x x
Auto-Tuning Mode
(T3-00 Value)
Dec Rate Tuning KEB Tuning
(2)
-
-
-
-
KEB Tuning
x -
*1
-
*2
- x
- -
- -
EZOLV
(8)
x
x
(3)
-
-
-
-