YASKAWA GA700 Technical Manual page 29

Table 1.7 OLV/PM, AOLV/PM, CLV/PM and EZOLV Features and Advantages of Control Methods
PM Open Loop
Control
Vector Control
Method
Selection
(OLV/PM)
Controlled
Motor
Parameter
A1-02 = 5
Settings
PM Open Loop
Basic Control Vector Control (no
speed controller)
• General-purpose
variable speed
control for PM
motors
Main
• Applications in
Applications
which a high level
of responsiveness
and accurate speed
control are not
necessary.
PG Option
Not necessary
Card
Maximum
Output 590 Hz
Frequency
Speed Control
1:20 AM
Range
Starting
100% / 5% speed
Torque
Stationary, Stator
Auto-Tuning
*5 Resistance, Rotational
Torque Limits
No
*5
Torque
No
Control
*5
Droop Control
No
*5
Zero Servo
No
Control
*5
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
PM Advanced
PM Closed Loop
Open Loop Vector
Vector Control
Control
(CLV/PM)
(AOLV/PM)
PM Motor
A1-02 = 6 A1-02 = 7
PM Open Loop PM Closed Loop
Current Vector Current Vector
Control (with speed Control (with speed
controller) controller)
• General-purpose
variable speed
Very high-
control for IPM
performance PM
motors
motor control with
• Applications in
motor encoders
which high-
Example: Torque
precision speed
control and torque
control and torque
limits
limits are
necessary.
Not necessary Necessary (PG-X3)
400 Hz 400 Hz
1:20 AM
1:1500
1:100
*1 *2 *3
100% / 5% speed
200% / 0 min
200% / 0 min -1
*1
Stationary, Stator
Stationary, Stator
Resistance, Z-phase,
Resistance, Rotational
Rotational
Yes Yes
Yes Yes
*6
No Yes
No Yes
1.3 Features and Advantages of Control Methods
EZ Open Loop
Vector Control
(EZOLV)
Induction Motors/
PM Motors/SynRM
(Synchronous
Reluctance
Motors)
A1-02 = 8
Open Loop Current
Vector Control
Low-speed torque
applications
Example: Fans and
pumps
Not necessary
120 Hz
1:100
-1 100% / 1% speed
*4
Line-to-Line
Resistance
Yes
No
No
No
Notes
-
-
-
-
-
-
This is the range of
variable control.
When you connect and
operate motors in this
mode, think about the
increase in motor
temperature.
This is the motor torque
that the drive can supply at
low speed during start-up
and the related output
frequency (rotation speed).
You must think about drive
capacity when a large
quantity of torque is
necessary at low speed.
Automatically tunes
electrical motor
parameters.
Controls maximum motor
torque to prevent damage
to machines and loads.
Directly controls motor
torque to control tension
and other parameters.
Sets load torque slip for
motors. Distributes motor
loads.
Locks servos without an
external position controller
to prevent movement
caused by external force.
29
1