Control mode selection, 2 general description – Yaskawa AC Drive Z1000 User Manual
Page 26
Motor Capacity kW (HP)
Three-Phase 400 V Class
Input Voltage < 460 V
Input Voltage ≥ 460 V
Model CIMR-Zo
Rated Output Current (A)
185 (250)
220 (300)
4A0361
361
<3>
220 (300)
260 (350)
4A0414
414
<3>
250 (340)
300 (400)
4A0480
480
<3>
300 (400)
370 (500)
4A0590
590
<3>
<1> Assumes the carrier frequency is set to 5 kHz.
<2> Assumes the carrier frequency is set to 4 kHz.
<3> Assumes the carrier frequency is set to 2 kHz.
Note:
Current derating is required when setting the carrier frequency higher.
u
Control Mode Selection
Table 1.2 Control Modes and Features
Motor Type
Induction Motors
Permanent Magnet Motors
Comments
Control Mode
V/f
OLV/PM
–
Parameter Setting
A1-02 = 0
A1-02 = 5
Default Setting is V/f control (A1-02 = 0)
Basic Description
V/f control
Open Loop Vector control
for PM motors
–
Type of
Applications
Motor Type
IM
PM
–
Multi Motor
YES
–
–
Motor data unknown
YES
–
–
High Speed Accuracy
–
YES
–
Control
Characteristics
Speed Control Range
1:40
1:20
May fluctuate with characteristics and motor
temperature.
Speed Accuracy
±2 to 3%
±0.2%
Speed deviation when operating at constant speed
may fluctuate with characteristics and motor
temperature.
Speed Response
3 Hz (approx.)
10 Hz
Max. frequency of a speed reference signal that the
drive can follow may fluctuate with characteristics
and motor temperature.
Starting Torque
140% at 3 Hz
100% at
5% speed
Starting torque may fluctuate with characteristics and
motor temperature.
Performance may differ by capacity.
Application-
Specific
Auto-Tuning
• Energy Saving Tuning
• Line to line resistance
• Stationary
• Line to line resistance
Automatically adjusts parameter settings that concern
electrical characteristics of the motor.
Speed Search
YES
YES
Bi-directional speed detection of a coasting motor to
restart it without stopping.
Energy-Saving Control
YES
–
Saves energy by always operating the motor at its
maximum efficiency.
High Slip Braking
YES
–
Increases motor loss to allow for faster deceleration.
Effectiveness may vary based on motor
characteristics.
Kinetic Energy Buffering
YES
YES
Decelerates the drive to allow it to ride through a
momentary power loss and continue operation.
Overexcitation Deceleration
YES
–
Allows faster deceleration without overvoltage trip.
Overvoltage Suppression
YES
YES
Prevents overvoltage by increasing speed during
regeneration.
1.2 General Description
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YASKAWA ELECTRIC TOEP C710616 45E YASKAWA AC Drive – Z1000 User Manual