7 EXPANSION CONTROL
7.1 Speed-torque Control
193
7
7
EXPANSION CONTROL
The details and usage of expansion control are explained in this chapter.
Expansion control includes the speed-torque control to execute the speed control and torque control not including position
loop and the synchronous control to synchronize with input axis using software with "synchronous control parameter" instead
of controlling mechanically with gear, shaft, speed change gear or cam, etc.
Execute the required settings to match each control.
7.1
Speed-torque Control
Outline of speed-torque control
This function is used to execute the speed control or torque control that does not include the position loop for the command to
servo amplifier.
"Continuous operation to torque control mode" that switches the control mode to torque control mode without stopping the
servomotor during positioning operation is also available for tightening a bottle cap or a screw.
Switch the control mode from "position control mode" to "speed control mode", "torque control mode" or "continuous operation
to torque control mode" to execute the "Speed-torque control".
Use the servo amplifiers whose software versions are compatible with each control mode to execute the "Speed-torque
control".
Servo amplifier software versions that are compatible with each control mode are shown below.
: There is no restriction by the version.
*1
The torque generation direction of servomotor can be changed by setting the servo parameter "Function selection C-B POL reflection
selection at torque control (PC29)" for the servo amplifier that is compatible with the continuous operation to torque control. (
197 Operation of speed-torque control)
For the servo amplifier that is not compatible with the continuous operation to torque control, the operation is the same as that of when
"0: Enabled" is set in servo parameter "Function selection C-B POL reflection selection at torque control (PC29)".
Control mode
Control
Remark
Position control mode
Positioning control, home position return control, JOG
operation, Inching operation and Manual pulse generator
operation
Control that include the position loop for the command to
servo amplifier
Speed control mode
Speed-torque control
Control that does not include the position loop for the
command to servo amplifier
Torque control mode
Continuous operation to torque
control mode
Control that does not include the position loop for the
command to servo amplifier
Control mode can be switched during positioning control or
speed control.
Servo amplifier model
Software version
Speed control
Torque control
Continuous operation to
torque control
MR-J4(W)-B/MR-JE-B
MR-J3-_B
B3 or later
C7 or later
MR-J3W-_B
Not compatible
MR-J3-_BS
C7 or later
CAUTION
• If operation that generates torque more than 100% of the rating is performed with an abnormally high frequency in a servomotor stop status (servo lock
status) or in a 30 r/min or less low-speed operation status, the servo amplifier may malfunction regardless of the electronic thermal relay protection.
Summary of Contents for RD77MS16
Page 1: ...MELSEC iQ R Simple Motion Module User s Manual Application RD77MS2 RD77MS4 RD77MS8 RD77MS16 ...
Page 2: ......
Page 316: ...314 9 COMMON FUNCTIONS 9 4 External Input Signal Select Function Program example ...
Page 317: ...9 COMMON FUNCTIONS 9 4 External Input Signal Select Function 315 9 ...
Page 575: ...13 PROGRAMMING 13 4 Positioning Program Examples 573 13 Error reset program Axis stop program ...
Page 643: ......