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YASKAWA A1000 Series Technical Manual

YASKAWA A1000 Series
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5.3 C: Tuning
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual 177
Parameter Details
5
C5-37, C5-38: Motor 2 Inertia, Motor 2 Load Inertia Ratio
These parameters function for motor 2 in the same way that C5-17 and C5-18 function for motor 1.
These parameters are set automatically when Inertia Tuning and ASR Tuning are performed for motor 2 in CLV and
CLV/PM control modes. Refer to Auto-Tuning on page 109 for details on Auto-Tuning or enter the data manually.
C6: Carrier Frequency
C6-01: Drive Duty Mode Selection
The drive has two different “duty modes” to select from based on the load characteristics. The drive rated current,
overload capacity, and maximum output frequency will change depending upon the duty mode selection. Use parameter
C6-01 to select Heavy Duty (HD) or Normal Duty (ND) for the application. The default setting is ND. Refer to Heavy
Duty and Normal Duty Ratings on page 388 for details about the rated current.
Table 5.15 Differences between Heavy and Normal Duty
Note: By changing the Duty Mode selection, the maximum size motor the drive can run changes, and the E2- parameters are
automatically set to appropriate values (E4- for motor 2). Parameters settings determined by motor capacity are recalculated
automatically when the Duty Mode selection is changed. This includes b8-04, L2-03, n5-02, L3-24, C5-17, and C5-37.
C6-02: Carrier Frequency Selection
Parameter C6-02 sets the switching frequency of the drives output transistors. Changes to the switching frequency helps
lower audible noise and also reduces leakage current.
Note: Increasing the carrier frequency above the default value automatically lowers the drive’s current rating. Refer to Rated Current
Depending on Carrier Frequency on page 179.
Note: The default setting for the carrier frequency differs based on the type of motor and the Duty Mode selection. The default is 2 kHz
when the drive is set for Heavy Duty performance, and defaulted to “Swing PWM1” when set for Normal Duty performance.
When using a PM motor, the default carrier frequency is 5.0 Hz.
No. Parameter Name Setting Range Default
C5-37 Motor 2 Inertia
0.0001 to 600.00 kgm
2
Determined by C6-01 and o2-04
C5-38 Motor 2 Load Inertia Ratio 0.0 to 6000.0 1.0
No. Parameter Name Setting Range Default
C6-01 Duty Mode Selection 0 or 1 0 (HD)
Characteristics Heavy Duty Rating (HD) Normal Duty Rating (ND)
C6-01 01
Performance
Application
Use Heavy Duty Rating for applications requiring a high overload
tolerance with constant load torque. Such applications include extruders
and conveyors.
Use Normal Duty Rating for applications in which the torque requirements
drop along with the speed. Examples include fans and pumps where a high
overload tolerance is not required.
Over load capability (oL2) 150% of drive rated Heavy Duty current for 60 s 120% of drive rated Normal Duty current for 60 s
Stall Prevention during
Acceleration (L3-02)
150% 120%
Stall Prevention during Run (L3-
06)
150% 120%
Default Carrier Frequency 2 kHz 2 kHz Swing PWM
No. Parameter Name Setting Range Default
C6-02 Carrier Frequency Selection 1 to F
Determined by A1-02, o2-04.
Reset when C6-01 is changed.
100%
100%
0 Motor Speed
Rated Load
Overload
150%
Motor Speed
0
100%
100%
120%
Rated Load
Overload

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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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