Chapter 4 Parameters
|
4-54
Revision Dec. 2008, 04VE, SW V2.05
2
Sensorless vector control (SVC)
3
FOC vector c Encoder (FOCPG)
4
Torque c Encoder (TQCPG)
This parameter determines the control method of the AC motor drive:
Setting 0: user can design V/f ratio by requirement and control multiple motors simultaneously.
Setting 1: User can use PG card with Encoder to do close-loop speed control.
Setting 2: To have optimal control characteristic by auto-tuning.
Setting 3: To increase torque and control speed precisely. (1:1000)
Setting 4: To increase accuracy for torque control.
When Pr.00-10 is set to 3, FOCPG control diagram is shown as follows.
IGBT
&
PWM
M
07-27
Tq Bias
10-09
Encoder
10-00
10-01
01-01
01-02
05-01
~
05-09
00-20 +
-
+
+
current
limit
c urr ent
measure
actual frequenc y
current feedbac k
tor que limit
no offs et
by anal og input (Pr.03-00)
tor que offset s etting ( Pr. 07-28)
controlled by ex ternal ter minal s (Pr.07- 29 to Pr.07-31)
flux weakening c urve
Control Di agra m for the Ve ctor + Torque
07-32~07-35
ASR
Pr.11-00 Bit 0=0
10-04~10-07,
10-21~10-22
Pr.11-00 Bit 0=1
11-02~11-04,
11-10~11-11
11-10
Speed Feed
F orward G ain
+
lq
command
ld
command
Position control diagram
d
dt
kd
kp
+
-
11-00 bit 0=0
11-18
11-00 bit 0=1
11-11
or
10-23
11-17
+
+
A
B
position
command
Electrical gear
10-17
10-18
position
feedback
speed
command
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Содержание VFD-VE
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