Settings For The Control Methods - YASKAWA Varispeed G7 Series Instruction Manual



Settings for the Control Methods

Autotuning methods depend on the control method set for the Inverter. Make the settings required by the con-
trol method.
Overview of Settings
Make the required settings in quick programming mode and autotuning mode according to the following flow-
chart.
V/f control
Set A1-02 to 0.
Set V/f pattern
in E1.
(Refer to page 6-122.)
Cable
between Inverter
and motor over
50 m?
50 m or longer
Autotuning
T1-01 = 2
Perform stationary
autotuning for the
line-to-line resistance only.
(Refer to page 4-16.)
Note 1. Autotuning is not necessary if the motor constants are already known from a motor test report. Set the E2 motor constants to the test report values
(refer to page 6-119). However, if the length of the motor cable exceeds 50 m, perform autotuning.
2. If the motor cable changes to 50 m or longer for the actual installation, perform stationary autotuning for the line-to-line resistance only on-site.
* 1. Use rotational autotuning to increase autotuning accuracy whenever it is okay for the motor to be operated. Always perform rotational autotuning when
using open-loop vector 2 control.
* 2. If there is a reduction gear between the motor and PG, set the reduction ratio in F1-12 and F1-13.
* 3. The default setting of the Inverter is for open-loop vector 1 control (A1-02 = 2).
* 4. If the maximum output frequency is different from the base frequency, set the maximum output frequency (E1-04) after autotuning.
-6
4
START
V/f control Vector control
(A1-02 = 0) Control (A1-02 = 2,3,4)
method (A1-02)?
V/f control with PG
(A1-02 = 1)
V/f control with
PG
Set A1-02 to 1.
Set V/f pattern
in E1.
(Refer to page 6-122.)
Set number of
Less than 50 m
motor poles in
E2-04.
(Refer to page 6-119.)
Set PG constant
in F1-01. *2
Cable
Less than 50 m
between Inverter
and motor over
50 m?
50 m or longer
Autotuning
T1-01 = 2
Perform stationary
autotuning for the line-to-line
resistance only.
(Refer to page 4-16.)
Fig 4.3 Settings According to the Control Method
*3
Open-loop vector 1 control
A1-02 = 2
When using open-loop vector 2 control,
Flux vector control
precision settings for control constants
A1-02 = 3 are required after the motor constant
have been set.
Open-loop vector 2 control
A1-02 = 4
Can
No
motor and load
be separated?
*1
Yes
*4
Autotuning
T1-01 = 0
Perform rotational
autotuning.
(Refer to page 4-10.)
END
Autotuning
Perform stationary
autotuning.
Motor-load ratio
Exceeds 30%
during initial operation
after tuning within
30%?
Within 30%
Autotuning *4 Autotuning *4
T1-01 = 1 T1-01 = 4
Perform stationary Perform stationary
autotuning 1. autotuning 2.
(Refer to page 4-13.) (Refer to page 4-19.)