Toshiba WX9 ASD Installation & Operation Manual page 162

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F488
Voltage Compensation Coefficient for Dead Time
Program Special  Special Parameters
This parameter adjusts the degree of voltage compensation during Dead Time
by increasing or decreasing the on-time of the programmed PWM just prior to
the start of the Dead Time.
Dead Time Compensation
Program Special  Special Parameters
This parameter Enables/Disables the Dead Time Compensation function. The
Dead Time Compensation feature provides a smoothing of the on-off IGBT
signal that feeds the Gate Driver board during the off portion of the on-off
cycle.
Settings:
0 — Enabled
1 — Disabled
Dead Time Compensation Bias
Program Special  Special Parameters
This parameter sets a bias for the Dead Time Compensation function. The
Dead Time Compensation feature provides a smoothing of the on-off IGBT
signal that feeds the Gate Driver board.
Switching Frequency Between Current and Voltage Control
Program Special  Special Parameters
This parameter sets the threshold frequency at which ASD control is switched
between current control and voltage control.
Acceleration Time 2
Program Special Acc/Dec (1 - 4) Settings
This parameter specifies the time in seconds for the drive to go from 0.0 Hz to
the Maximum Frequency for the Acceleration (Acc) 2 Profile. The
Acceleration/Deceleration (Acc/Dec) pattern may be set using S-Curve Acc/
Dec Pattern 1 (F502). The minimum Acc/Dec time may be set using Acc/Dec
Time Lower Limit (F508).
This setting is also used to determine the acceleration rate of the UP/DOWN
Frequency function.
Note:
An acceleration time shorter than the load will allow may cause
nuisance tripping and mechanical stress to loads.
Automatic Acceleration/Deceleration, Stall, and Ridethrough
settings may lengthen the acceleration time.
150
Direct Access Number — F488
Parameter Type — Numerical
Factory Default — (ASD-Dependent)
Changeable During Run — Yes
Minimum — 0.0
Maximum — 327.6
Direct Access Number — F489
Parameter Type — Selection List
Factory Default — Enabled
Changeable During Run — Yes
Direct Access Number — F490
Parameter Type — Numerical
Factory Default — (ASD-Dependent)
Changeable During Run — Yes
Minimum — -32.768
Maximum — 32.767
Direct Access Number — F491
Parameter Type — Numerical
Factory Default — 40.00
Changeable During Run — Yes
Minimum — 10.00
Maximum — 60.00
Units — Hz
Direct Access Number — F500
Parameter Type — Numerical
Factory Default — (ASD-Dependent)
Changeable During Run — Yes
Minimum —
Maximum — 6000.00
Units — Seconds
WX9 ASD Installation and Operation Manual
F500
F508

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