Control Tuning - Omron Q2A Series Technical Manual

4.6 Auto-Tuning
◆

Control Tuning

To increase drive responsiveness and prevent hunting, use Auto-Tuning to automatically adjust the control-related
parameters.
These types of Auto-Tuning are available for the control system:
• Inertia Tuning
• ASR Tuning
• Deceleration Rate Tuning
• KEB Tuning
Note:
If you do Control Tuning, you cannot set any parameter of H1-xx = 61 [H1-xx: MFDI Function Select = Motor 2 Select]. Do not do
Control Tuning for applications that switch between motor 1 and motor 2.
Value of
Control Application Conditions and
Mode
Loop Tune
Selection
• For Feed Forward Control
• When L2-29 = 2 [KEB Method =
Single KEB2 Ride-Thru].
Inertia Tuning 0
• When MFDI H1-xx = 42 [H1-xx:
MFDI Function Select = KEB
Thru2 NC].
To let the set response frequency
ASR Tuning 1 (including Inertia Tuning)
automatically adjust the ASR gain.
To automatically adjust the
Deceleration
2 deceleration rate to prevent an ov
Rate Tuning
[Overvoltage] 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 [Overvolt
Supression Select = Enabled].
Input Data
T3-01 [Inertia Test Frequency]
T3-02 [Inertia Test Amplitude]
T3-03 [Motor Inertia]
T3-04 [System ResponseFrequency]
■
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 = 42 [H1-xx: MFDI Function Select = KEB Thru2 NC].
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).
148
Table 4.13 Control Loop Tuning Selection
Benefits V/f
Control
(0)
-
-
×
×
Table 4.14 Input Data for Control Tuning
Unit
Hz
Rad
2
Kg∙m
Hz
Applicable Control Method
(Value of A1-02 [Control Method])
Adv
PG V/f OLVec CLVec
OLVec
Control tor tor
(1) (2) (3)
- - ×
- - ×
× × ×
× × ×
(Value of T3-00 [Control Loop Tune Selection])
ASR (Speed
Inertia Tuning
Regulator)
(0)
(1)
× ×
× ×
× ×
- ×
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
PM PM PM
OLVec AOLVec CLVec
tor tor tor tor
(4) (5) (6) (7)
- - - ×
- - - ×
× × × ×
× × × ×
Auto-Tuning Mode
Dec Rate Tuning KEB Tuning
(2)
-
-
-
-
EZ
Vector
(8)
-
-
×
×
(3)
-
-
-
-