Torque Limit - Toshiba TOSVERT VF-PS1 Instruction Manual

6.21

Torque limit

 : Power running torque
 : Power running torque
 Function
This function is to decrease or increase the output frequency according to the loading condition when the
motor torque reaches the limit level. Setting a torque limit parameter at 250% means "Invalid."
With this function, you can also select from between limiting the constant output or limiting the constant
torque in the constant output zone.
This function is not operate when the parameter =,, setting.
 Setting methods
(1) When setting limits to torque, use internal parameters (Torque limits can also be set with an external control device.)
6
Reverse run
With the parameter , you can select the item that is limited in the constant output zone (somewhat weak
magnetic field) from between constant output (=: default setting) and constant torque (=).
When you select the constant torque limit option, you should preferably select the output voltage limit option
(=) with the parameter  (base frequency voltage selection).
Torque limits can be set with the parameters  and .
[Setting of power running torque]
 (Power running torque limit selection)
 (Power running torque limit)
[Setting of regenerative torque]
 (Regenerative braking torque limit selection)
 (Regenerative braking torque limit)
[Parameter setting]
Title





Note:If the value set with  (stall prevention level) is smaller than the torque limit, then the value set with
 acts as the torque limit.
limit selection
limit level
Positive torque

Regenerative
Power
running

Negative torque
Function
Power running torque limit
selection
Power running torque limit level
Regenerative braking torque limit
selection
Regenerative braking torque limit
level
Constant output zone torque limit
selection
 : Regenerative braking torque
limit selection
 : Regenerative braking torque
limit level
 : Constant output zone torque
limit selection
+250% torque

Power
running
Regenerative

-250% torque
: Set at  ()
: Set a desirable torque limit level.
: Set at  ()
: Set a desirable torque limit level.
Adjustment range
:VI/II (voltage/current input)
:RR/S4 (potentiometer/voltage input)
:RX (voltage input)
:
~ %  %:Disabled
:VI/II (voltage/current input)
:RR/S4 (potentiometer/voltage input)
:RX (voltage input)
:
~ %  %:Disabled
:Constant output limit
:Constant torque limit
F-40
E6581386
: =
: =
Forward run
Default setting




