HX7+ ASD Installation and Operation Manual 153
Voltage Compensation Coefficient for Dead Time
Program Special Control 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.
Direct Access Number — F488
Parameter Type — Numerical
Factory Default — 163.8
Changeable During Run — Ye s
Minimum — 1.64
Maximum — 327.6
Dead Time Compensation (Enable)
Program Special Control 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
Direct Access Number — F489
Parameter Type — Selection List
Factory Default — Enabled
Changeable During Run — Ye s
Dead-time Compensation Bias
Program Special Control 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.
Direct Access Number — F490
Parameter Type — Numerical
Factory Default — 0.000
Changeable During Run — Ye s
Minimum — -32.768
Maximum — 32.767
Switching Frequency of Current/Voltage Control
Program Special Control Special Parameters
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 — Ye s
Minimum — 10.00
Maximum — 60.00
Units — Hz
Accel #2 Time
Program Special Control Accel/Decel #1-#4
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 — (ASD dependent)
Changeable During Run — Ye s
Minimum — 0.1
Maximum — 6000
Units — Seconds
F488 F500
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