Справочник Пользователя для Mitsubishi Electronics FR-V500

36

Torque control is exercised to develop torque as set in the torque command. The motor speed becomes constant
when the motor output torque and load torque are balanced. For torque control, therefore, the speed is determined
by the load.
For torque control, the motor gains speed as the motor output torque becomes greater than the motor load. Here,
set the speed restriction value so that the motor speed does not increase too high. The speed restriction value is set
in the following method. When speed restriction is not set, the speed restriction value setting is regarded as 0r/min
to disable torque control.
(Toruque control is disabled under speed restriction. (Speed control is performed.))

!

When the load is smaller than torque command, the speed increases up to the speed restriction value.

Torque control

Speed restriction

Speed restriction value is 
increased up to preset value 
according to the Pr.7 
"acceleration time" setting.

Speed restriction value

Speed restriction value is decreased 
down to zero according to the Pr.8 
"deceleration time" setting.

Speed

Speed

Start signal

Output torque

Output torque is provided 
according to the No. 3 terminal 
setting.

Speed restriction

*

* Speed control is peformed during speed restriction. (thus, torque according to the command is not developed)

Speed restriction

Speed restriction value

Torque control

Limit by the torque 
restriction value

150%

OFF

ON

Terminal STF

10V

Speed

0r/min

Output torque

0

0V