Q2 Q2A, Technical Manual

Page: 154 / 866

4.6 Auto-Tuning
154 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual
Mode
Value of
Control
Loop Tune
Selection
Application Conditions and
Benefits
Applicable Control Method
(Value of A1-02 [Control Method])
V/f
Control
(0)
PG V/f
Control
(1)
OLVec
tor
(2)
CLVec
tor
(3)
Adv
OLVec
tor
(4)
PM
OLVec
tor
(5)
PM
AOLVec
tor
(6)
PM
CLVec
tor
(7)
EZ
Vector
(8)
Deceleration
Rate Tuning
2
To automatically adjust the
deceleration rate to prevent an
ov
[Overvoltage] fault.
× × × × × × × × ×
KEB Tuning 3
• To automatically adjust parameter
settings to prevent an
ov
[Overvoltage] fault with the KEB
Ride-Thru function.
•
When L3-11 = 1 [Overvolt
Supression Select = Enabled] .
× × × × × × × × ×
Table 4.15 Input Data for Control Tuning
Input Data Unit
Auto-Tuning Mode
(Value of T3-00 [Control Loop Tune Selection])
Inertia Tuning
(0)
ASR (Speed
Regulator)
(1)
Dec Rate Tuning
(2)
KEB Tuning
(3)
T3-01 [Inertia Test Frequency] Hz × × - -
T3-02 [Inertia Test Amplitude] Rad × × - -
T3-03 [Motor Inertia] Kg∙m 2 × × - -
T3-04 [System ResponseFrequency] Hz - × - -
■
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).
■
Deceleration Rate Tuning
Deceleration Rate Tuning automatically sets the deceleration rate to prevent an ov [Overvoltage] fault during
motor deceleration. Set C1-11 [Ac/Dec Switch Frequency] first to automatically set parameters C1-02 [Decel Time
1] (high speed range) and C1-08 [Decel 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 the following table to the best values.
Table 4.16 Parameters set in Control Tuning
Parameters Automatically Set Inertia Tuning ASR (Speed Regulator) Dec Rate Tuning KEB Tuning
C1-02 [Decel Time 1]
- - × -
C1-08 [Decel Time 4] - - ×
*1
-
C1-09 [Fast Stop Time]
- - - ×
*2
C5-01 [ASR PGain 1]
- × - -
C5-17 [Motor Inertia]
× × - -
C5-37 [M2 Inertia] × × - -
C5-18 [Inertia Ratio of Load]
× × - -