Torque Limit - Toshiba Q9 Plus Bypass ASD Installation & Operation Manual

6.26 Torque limit

6.26.1 Torque limit switching
f441 : Power running torque limit 1
level
f443 : Regenerative braking torque
limit 1 level
f444 : Power running torque limit 2
level
• Function
Decrease the output frequency according to the overload condition when the motor torque reaches a
certain set level. T his function will be invalid when setting a torque limit parameter at 250.
You can also select limiting the constant output or constant torque in the constant output zone.
This function will not work when the parameter =, , 7 setting.
Setting methods
When setting limits to torque, use internal parameters (Torque limits can also be set with an external control device.)
Reverse run
With the parameter f454, you can select the item for limit treatment in the constant output zone (somewhat weak
magnetic field) from constant output (f454=0: default setting) or constant torque (f454=1).
Output voltage limit option(f307=1) is recommended for the parameter f307 (supply voltage correction).
f445 : Regenerative braking torque
f454 : Constant output zone torque
Positive torque
 

Power
Regenerative running
Power Regenerative
running


Negative torque
F-91
E6581611
limit 2 level
limit selection
: =
: =
Forward run
6