Toshiba G7 manual Torque Limit Mode Speed Dependent, Stall Until Trip During Power Operation

F451		F470
Torque Limit Mode (Speed Dependent)	Direct Access Number —	F451
Program ⇒ Torque Setting Parameters ⇒ Torque Limit Settings ⇒	Parameter Type — Selection List
Torque Limit Mode (Speed Dependent)	Factory Default — Standard
This parameter allows for either wide or very limited speed fluctuations while	Changeable During Run — Yes
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:
Standard
No Speed Cooperation
Continued Stall Until Trip During Power Operation	Direct Access Number —	F452
Program ⇒ Protection Parameters ⇒ Stall ⇒ Continuing Stall Period	Parameter Type — Numerical
This parameter allows the user to extend the Overvoltage Stall (F305) and the	Factory Default — 0.0
	Changeable During Run — Yes
Overcurrent Stall (F017) time settings.
	Minimum — 0.0
	Maximum — 1.00
	Units — Seconds
Stall Prevention During Regeneration	Direct Access Number —	F453
Program ⇒ Protection Parameters ⇒ Stall ⇒ Stall Prevention During	Parameter Type — Selection List
Regeneration	Factory Default — With Stall
This parameter Enables/Disables the Overvoltage Stall (F305) and the	Prevention.
	Changeable During Run — Yes
Overcurrent Stall (F017) function during regeneration only. Application-
specific conditions may occur that warrant disabling the Stall function during
regeneration.
Settings:
With Stall Prevention
Without Stall Prevention
Current Differential Gain	Direct Access Number —	F454
Program ⇒ Special Control Parameters ⇒ Special Parameters ⇒	Parameter Type — Numerical
Current Differential Gain	Factory Default — 1.23
This parameter determines the degree that the current differential function	Changeable During Run — Yes
affects the output signal. The larger the value entered here, the more	Minimum — 0.00
pronounced the Current Differential Gain.	Maximum — 327.6
VI/II Bias Adjust	Direct Access Number —	F470
Program ⇒ Frequency Setting Parameters ⇒ Speed Reference	Parameter Type — Numerical
Setpoints ⇒ VI/II ⇒ Bias	Factory Default — 100

This parameter is used to fine-tune the bias of the VI/II input terminals.

Changeable During Run — Yes

Minimum — 0.0

Note: See note on pg. 46 for further information on the VI/II terminal.

Maximum — 255

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.

G7 ASD Operation Manual 135