YASKAWA U1000 Series - Control Mode Selection

1.2 General Description
32 YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual
◆ Control Mode Selection
Tabl e 1.2 gives an overview of the U1000 control modes and their various features:
Table 1.2 Control Modes and their Features
Motor Type
<1> Use a larger drive or increase the drive capacity to achieve this value.
<2> Available when High Frequency Injection is enabled (n8-57 = 1).
Induction Motors Permanent Magnet Motors Comments
Control Mode V/f V/f w/PG OLV CLV OLV/PM AOLV/PM CLV/PM –
Parameter Setting A1-02 = 0 A1-02 = 1 A1-02 = 2 A1-02 = 3 A1-02 = 5 A1-02 = 6 A1-02 = 7
Default Setting is Open Loop Vector
Control.
Basic Description
V/f control
V/f control
using motor
speed
feedback
Open Loop
Vec to r c on tr ol
Closed Loop
Vector control
Open Loop
Vector control
for PM motors
Open Loop
Vector control
for IPM
motors
Closed Loop
Ve ct or co nt ro l
for PM motors
–
Type of
Applications
Motor Type IM IM IM IM PM IPM PM –
Multi Motor YES N/A N/A N/A N/A N/A N/A –
Motor data
unknown
YES N/A N/A N/A N/A N/A N/A –
High Speed
Accuracy
N/A YES YES YES YES YES YES –
High Speed
Response
N/A N/A YES YES N/A YES YES –
Zero Speed
Control
N/A N/A N/A YES N/A YES YES –
Torque Control
Operation
N/A N/A N/A YES N/A YES YES –
Torqu e Li mit
Operation
N/A N/A YES YES N/A N/A YES –
PG Option Card N/A
PG-B3 or
PG-X3
N/A
PG-B3 or
PG-X3
N/A N/A PG-X3 –
Control
Characteristics
Speed Control
Range
1:40 1:40 1:200 1:1500 1:20
1:20
1:100
<1>
1:1500
May fluctuate with characteristics and
motor temperature.
Enabled for 1:100 when n8-57 = 1 (high
frequency injection enabled).
Speed Accuracy ±2 to 3% ±0.03% ±0.2% ±0.02% ±0.2% ±0.2% ±0.02%
Speed deviation rate between speed
reference value and motor speed
(100% = rated speed, motor temperature
25°C±10°C) when operating at normal
status and when load is stable.
Speed Response
3 Hz
(approx.)
3 Hz
(approx.)
10 Hz 100 Hz 10 Hz 10 Hz 100 Hz
Max. frequency of a speed reference signal
that the drive can follow. May fluctuate
with characteristics and motor temperature.
Starting Torque 150% at 3 Hz 150% at 3 Hz
200% at
0.3 Hz
<2>
200% at
0 min
-1
<2>
100% at
5% speed
100% at 5%
speed
200% at
0 min
-1
<1> <2>
200% at
0 min
-1
<2>
May fluctuate with characteristics and
motor temperature.
Performance may differ by capacity.
Application-
Specific
Auto-Tuning
• Energy
Saving
Tuning
• Line to
line
resistance
• Energy
Saving
Tuning
•Line to
line
resistance
• Rotational
• Stationary
•Line to
line
resistance
• Rotational
• Stationary
•Line to
line
resistance
•ASR
• Inertia
• Stationary
• Stator
Resistance
• Stationary
•Stator
Resistance
• Rotational
• Stationary
• Stator
Resistance
•ASR
• Inertia
• Encoder
Offset
•Back EMF
Constant
Automatically adjusts parameter settings
that concern electrical characteristics of the
motor.
Torqu e Li mit N/A N/A YES YES N/A YES YES
Sets the maximum torque for the motor to
protect the load and connected machinery.
Torque Control N/A N/A N/A YES N/A N/A YES
Allows direct control of motor torque for
tension control and other such applications.
Droop Function N/A N/A N/A YES N/A N/A YES
Sets the slip for the load torque of the
motor. Used for motor load distribution.
Zero Servo
Control
N/A N/A N/A YES N/A N/A YES Locks the rotor position.
Speed Search YES YES YES – YES YES YES
Bi-directional speed detection of a coasting
motor to restart it without stopping.
Energy-Saving
Control
YES YES YES YES N/A
YES (IPM
motors only)
YES (IPM
motors only)
Saves energy by always operating the
motor at its maximum efficiency.
Feed Forward
Control
N/A N/A N/A YES N/A N/A YES
Improves speed accuracy when the load
changes by compensating effects of the
system inertia.
Inertia Tuning,
ASR Tuning
N/A N/A N/A YES N/A N/A YES
Provides automatic Speed Control and
Feed Forward function tuning.
Commercial
Power
Switching
Selection
YES N/A N/A N/A N/A N/A N/A
When the output frequency matches the
power supply frequency 60 Hz, the PWM
switching operation stops and switches to
operation with a direct commercial power
supply connection.
High Frequency
Injection
N/A N/A N/A N/A N/A
YES (IPM
motor)
N/A
Greatly increases the speed control range
of an IPM motor.
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