Mitsubishi Electric FR-E800 Instruction Manual page 164

 Operation transition
Speed limit value is
increased up to preset value
according to the Pr.7
Acceleration time setting.
Speed
Start signal
Output torque
• 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.
Speed
Start signal
Output torque
Item
External operation
Start signal
PU operation
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.
 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.
Speed
Speed Speed Speed
STF
(Forward
rotation
command)
Speed limit operation
(Speed control)
OL
(Speed limit)
• At the STF signal ON, the speed limit value is raised in accordance with the setting of Pr.7.
Torque control
Speed limit
Speed control is performed during speed
limit. (Thus, torque according to the
commanded is not developed.)
Torque control
Description
STF, STR signal
RUN key of the operation panel, or FWD/REV key of the
parameter unit
Pr.7 Speed limit value
*
Torque control operation
ON
* When the speed limit activates, torque according to the commanded is not developed.
Speed limit value
Speed limit value is decreased
down to zero according to the Pr.8
Deceleration time setting.
Speed limit
The output torque is
determined by the torque
command.
Speed limit value
Speed control
(speed limit)
The output torque is determined
by the torque command.
Limit at the torque limit value
*
Torque
Speed limit operation
control
(Speed control)
operation
ON
Pr.8
*
Time
Speed limit operation
(Speed control)
ON
163
6. Torque Control
6.1 Torque control
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