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YASKAWA A1000 Series Technical Manual

YASKAWA A1000 Series
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5.2 b: Application
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual 141
Parameter Details
5
Setting 0: Follow the Frequency Reference
The drive adjusts the motor speed following the speed reference, even if the frequency reference is below the setting of
parameter E1-09. When the Run command is removed and the motor speed is smaller than the setting of b2-01, Zero
Speed Control (not position lock) is performed for the time set in parameter b2-04 before the drive output shuts off.
Figure 5.9
Figure 5.9 Run at the Frequency Reference
Setting 1: Coast to Stop
The motor is started first when the frequency reference exceeds the setting of parameter E1-09. Once the motor is
running and the frequency reference falls below E1-09 the drive output is shut off and the motor coasts. When the motor
speed falls below the zero speed level set in parameter b2-01, Zero Speed Control is activated for the time set in b2-04.
Figure 5.10
Figure 5.10 Coast to Stop
Setting 2: Run at the minimum frequency
Whenever a Run command is active and the frequency reference is smaller than the value of parameter E1-09, the drive
runs the motor at the speed set in E1-09. When the Run command is removed, the drive decelerates the motor. As soon as
the motor speed reaches the zero speed level set in b2-01, Zero Speed Control is activated for the time set in b2-04.
Figure 5.11
Figure 5.11 Run at the Minimum Frequency
Zero Speed
Control
b2-01 Zero
Speed Level
Run
Command
Frequency
reference
Motor
Speed
OFF ON
Zero Speed
Control
E1-09 Min.
Frequency
b2-04
Zero Speed Time at Stop
E1-09
b2-03
Zero Speed Time at Start
IM: Initial Excitation
PM: Zero Spd. Contr.
common_TMonly
b2-03
Zero Speed Time at Start
IM: Initial Excitation
PM: Zero Spd. Contr.
b2-01 Zero
Speed Level
Run
Command
Frequency
reference
Motor
Speed
OFF ON
Zero Speed
Control
E1-09 Min.
Frequency
b2-04
Zero Speed Time at Stop
Motor
Coasts
common_TMonly
b2-01 Zero
Speed Level
Run
Command
Frequency
reference
Motor
Speed
OFF ON
Zero Speed
Control
E1-09 Min.
Frequency
b2-04
Zero Speed Time at Stop
Run at
E1-09
Run at
E1-09
b2-03
Zero Speed Time at Start
IM: Initial Excitation
PM: Zero Spd. Contr.
common_TMonly

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YASKAWA A1000 Series Specifications

General IconGeneral
SeriesA1000
TypeAC Drive
AltitudeUp to 1000m without derating
Output Frequency0-400 Hz
Control MethodV/f Control
Overload Capacity150% for 60 seconds
Communication OptionsModbus, DeviceNet, Profibus, Ethernet/IP
Ambient Temperature-10 to 50°C
Storage Temperature-20 to 60°C
Humidity5% to 95% (non-condensing)
Enclosure RatingIP20
Horsepower0.5 to 1000 HP
Power Range0.4 - 630 kW (varies by voltage and model)
Protection FeaturesOvercurrent, Overvoltage, Undervoltage, Overheat
Cooling MethodFan Cooled
SafetySafe Torque Off (STO)

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