Toshiba H7 - Page 143

136 H7 ASD Operation Manual
Dead Time Compensation (Enable)
Program ⇒ Special Control Parameters ⇒ Special Parameters ⇒ Dead
Time Compensation
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:
Enabled
Disabled
Direct Access Number — F489
Parameter Type — Selection List
Factory Default — Enabled
Changeable During Run — Yes
Dead-time Compensation Bias
Program ⇒ Special Control Parameters ⇒ Special Parameters ⇒ Dead-
time Compensation Bias
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.
Direct Access Number — F490
Parameter Type — Numerical
Factory Default — 0.000
Changeable During Run — Yes
Minimum — -32.768
Maximum — 32.767
Switching Frequency of Current/Voltage-Control
Program ⇒ Special Control Parameters ⇒ Special Parameters ⇒
Switching Frequency between Current and Voltage Control
This parameter sets the threshold frequency at which ASD control is switched
between Current-control and Voltage -control.
Direct Access Number — F491
Parameter Type — Numerical
Factory Default — 40.00
Changeable During Run — Yes
Minimum — 10.00
Maximum — 60.00
Units — Hz
Accel #2 Time
Program ⇒ Special Control Parameters ⇒ #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 #2 Acceleration profile. The accel/decel
pattern may be set using F502. The minimum accel/decel time may be set using
F508.
This setting is also used to determine the acceleration rate of the Motorized Pot
function.
Note: An acceleration time shorter than the load will allow may cause nuisance
tripping and mechanical stress to loads.
Automatic Accel/Decel and Stall settings may lengthen the acceleration
time.
Direct Access Number — F500
Parameter Type — Numerical
Factory Default — (drive dependent)
Changeable During Run — Yes
Minimum — 0.1
Maximum — 6000.0
Units — Seconds
F489 F500
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