Toshiba HX7+ ASD - Page 158

HX7+ ASD Installation and Operation Manual 149
Torque Limit Mode (Speed Dependent)
Program Torque Setting Torque Limit Settings
This parameter allows for either wide or very limited speed fluctuations while
operating in the Torque Control mode.
The ASD output follows the commanded speed when No Speed Cooperation
is selected and has a very limited speed fluctuation range when Standard is
selected.
Settings:
0 — Standard
1 — No Speed Cooperation
Direct Access Number — F451
Parameter Type — Selection List
Factory Default — Standard
Changeable During Run — Ye s
Continued Stall Period
Program Protection Stall
This parameter allows the user to extend the Over-Voltage Stall (F305) and the
Over-Current Stall (F452) time settings.
Direct Access Number — F452
Parameter Type — Numerical
Factory Default — 0.0
Changeable During Run — Yes
Minimum — 0.0
Maximum — 1.00
Units — Seconds
Stall Prevention During Regeneration
Program Protection Stall
This parameter Enables/Disables the Over-Voltage Stall (F305) and the Over-
Current Stall (F017) function during regeneration only. Application-specific
conditions may occur that warrant disabling the Stall function during
regeneration.
Settings:
0 — With Stall Prevention
1 — Without Stall Prevention
Direct Access Number — F453
Parameter Type — Selection List
Factory Default — With Stall
Prevention.
Changeable During Run — Ye s
Current Differential Gain
Program Special Control Special Parameters
This parameter determines the degree that the current differential function
affects the output signal. The larger the value entered here, the more
pronounced the Current Differential Gain.
Direct Access Number — F454
Parameter Type — Numerical
Factory Default — 1.23
Changeable During Run — Ye s
Minimum — 0.00
Maximum — 327.6
VI/II Bias Adjust
Program Frequency Setting  Speed Reference Setpoints  VI/II
This parameter is used to fine-tune the bias of the VI/II input terminals.
Note: See note on pg. 57 for further information on the VI/II terminal.
This setting may be used to ensure that the zero level of the input source (pot,
pressure transducer, flow meter, etc.) is also the zero level setting of the ASD
system.
This is accomplished by setting the input source to zero and either increasing or
decreasing this setting to provide an output of zero from the ASD.
Direct Access Number — F470
Parameter Type — Numerical
Factory Default — 100
Changeable During Run — Ye s
Minimum — 0.0
Maximum — 255
F451 F470