Yaskawa AC Drive-P1000 Industrial Fan - Manual (Page 30)

u Control Mode Details
Table 1.2 gives an overview of the various P1000 control mode features.
Table 1.2 Control Mode Details
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 –
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 150% at 3 Hz
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
Automatically adjusts parameter settings
that concern electrical characteristics of the
motor.
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 than normal without a braking
resistor. 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.
Over-
excitation
Deceleration
YES
Provides fast deceleration without using a
braking resistor.
Overvoltage Suppression YES
Prevents overvoltage by increasing speed
during regeneration.
1.2 General Description
30 YASKAWA SIEP YAIP1U 01B AC Drive - P1000 Technical Manual