Polarity Of Torque Command - Toshiba TOSVERT VF-A7 Instruction Manual

3.3.2 Polarity of torque command

When using the torque limit function in torque control mode or speed control mode,
change the polarity of the torque command, as required.
Title Function
Torque reference

mode selection
(1) Power-running/regenerative torque
This setting is used when the machine requires a frequent change in the direction of rotation of
the motor.
Operation by Reverse run command (R)
 : Regenerative torque limit #1
Reverse run
 : Power running torque limit #1
 Torque reference mode selection
 Reverse run prohibition
 Torque limit mode (polarity)
(2) Positive/negative torque
This setting is used when the machine requires a frequent change in the direction of rotation of
the motor, though a load is applied always in the same direction.
Torque command
(Continuous forward/reverse)
Reverse run
 Torque reference mode selection
 Reverse run prohibition
 Torque limit mode (polarity)
Title Adjustment range
: Fixed direction
: Forward/reverse permitted
Negative Torque
Area
Same
torque
reference
Area
Positive torque
: Fixed direction
: Prohibited except specified direction
: Power-running/regenerative torque limit
Positive torque

Area Area
Area Area

Negative Torque
: Forward/reverse permitted
: Both directions allowed
: Positive/negative torque limit
C-10
Operation by forward run command (F)
Positive torque
 : Power running torque
Area
Area
 : Regenerative torque limit #1
Negative Torque
Power-running torque limit #1
:
Forward run
Regenerative torque limit #2
:
Default setting

limit #1
Forward run