General Description - YASKAWA Z1000U Technical Manual

1.2

General Description

u
Control Mode Details
Table 1.1 gives an overview of the various features associated with the bypass.
Motor Type
Control Mode
Basic Description
Type of Applications
Motor data unknown
High Speed Accuracy
Speed Control Range
Control
Characteristics
Energy-Saving Control
Application-Specific
Commercial Power Switching
YASKAWA SIEP YAIZ1D 01C Z1000U HVAC MATRIX Drive Bypass Technical Manual
Table 1.1 Control Mode Features
Motor Type
Multi Motor
Speed Accuracy
Speed Response
Starting Torque
• Energy Saving Tuning
Auto-Tuning
• Line to line resistance
Speed Search
Overexcitation
Deceleration
Selection
Induction Motors
V/f
V/f control
IM
YES
YES
–
May fluctuate with characteristics and motor
1:40
temperature.
Speed deviation when operating at constant speed
±2 to 3% may fluctuate with characteristics and motor
temperature.
Max. frequency of a speed reference signal that the
3 Hz (approx.) drive can follow may fluctuate with characteristics
and motor temperature.
Starting torque may fluctuate with characteristics
150% at 3 Hz
and motor temperature.
Automatically adjusts parameter settings that
concern electrical characteristics of the motor.
Bi-directional speed detection of a coasting motor
YES
to restart it without stopping.
Saves energy by always operating the motor at its
YES
maximum efficiency.
Provides fast deceleration without using a braking
YES
resistor.
When the output frequency matches the power
supply frequency (60 Hz), the PWM switching
YES
operation stops and switches to operation with a
direct commercial power supply connection.
1.2 General Description
Comments
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