Yaskawa AC Drive P1000 Bypass Technical Manual - Manual (Page 27)

1.2 General Description
u Control Mode Details
Table 1.1 gives an overview of the various features associated with the P1000 Bypass.
Table 1.1 Control Mode Features
Motor Type Induction Motors Comments
Control Mode V/f –
Basic Description V/f control –
Type of Applications
Motor Type IM –
Multi Motor YES –
Motor data unknown YES –
High Speed Accuracy – –
Control Characteristics
Speed Control Range 1:40 May fluctuate with characteristics and motor temperature.
Speed Accuracy ±2 to 3%
Speed deviation when operating at constant speed may fluctuate
with characteristics and motor temperature.
Speed Response 3 Hz (approx.)
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
Starting torque may fluctuate with characteristics and motor
temperature.
Performance may differ by capacity.
Application-Specific
Speed Search 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
Decelerates the drive to allow it to ride through a momentary power
loss and continue operation.
Overexcitation Deceleration YES Provides fast deceleration without using a braking resistor.
Overvoltage Suppression YES Prevents overvoltage by increasing speed during regeneration.
1.2 General Description
YASKAWA SIEP YAIP1B 01A YASKAWA AC Drive – P1000 Bypass Technical Manual 27
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Receiving