Mitsubishi Electric FR-E800, Инструкция по эксплуатации, Страница: 140 / 484

139
6. Torque Control
6.1 Torque control
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8
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10
 Operation transition
• If the setting value of Pr.7 and Pr.8 is "0", turning OFF the start signal enables speed control, and the output torque is
controlled by the torque limit value.
 Operation example
Torque control is possible when actual rotation speed does not exceed the speed limit value.
When the speed reaches or exceeds the speed limit value, speed limit is activated, torque control is stopped, and speed control
is performed.
The operation is as follows.
• At the STF signal ON, the speed limit value is raised in accordance with the setting of Pr.7 .
Item Description
Start signal
External operation STF, STR signal
PU operation RUN key of the operation panel
Torque command Select the method to give the torque command, and give the torque command.
Speed limit Select the method to give the speed limit command, and input the speed limit value.
Speed limit value
Start signal
Output torque
Speed
Speed limit
Torque control
Speed limit
Speed control is performed during speed
limit. (Thus, torque according to the
commanded is not developed.)
Speed limit value is
increased up to preset value
according to the
Pr.7
Acceleration time setting. Speed limit value is decreased
down to zero according to the
Pr.8
Deceleration time setting.
The output torque is
determined by the torque
command.
Speed limit value
Start signal
Output torque
Speed
Limit at the torque limit value
Torque control
Speed control
(speed limit)
The output torque is determined
by the torque command.
STF
(Forward
rotation
command)
Pr.7
Speed limit value
Time
Speed
Speed Speed Speed
Torque
control
operation
Torque control operation
Pr.8
Speed limit operation
(Speed control)
Speed limit operation
(Speed control)
Speed limit operation
(Speed control)
*
*
*
* When the speed limit activates, torque according to the commanded is not developed.
OL
(Speed limit)
ON
ON ON