438
7 AUXILIARY AND APPLIED FUNCTIONS
7.5 Speed-Torque Control
The following chart shows the operation timing.
■
Operation for "Speed control mode
Continuous operation to torque control mode
switching"
When the mode is switched from speed control mode to continuous operation to torque control mode, the command torque
and command speed immediately after switching are the values set in "Torque initial value selection at control mode
switching" and "Speed initial value selection at control mode switching".
• Command torque
• Command speed
Torque initial value selection at
control mode switching
Command torque to servo amplifier immediately after switching from speed control mode to
continuous operation to torque control mode
0: Command torque
Immediately after switching the control mode, the value of torque command device is the torque to servo amplifier
regardless of the command torque time constant.
1: Feedback torque
Motor current value received from servo amplifier at switching is the torque to servo amplifier.
Speed initial value selection at
control mode switching
Command speed to servo amplifier immediately after switching from speed control mode to
continuous operation to torque control mode
0: Command speed
The speed to servo amplifier immediately after switching is the speed during command.
1: Feedback speed
Motor speed received from servo amplifier at switching.
2: Automatic selection
The speed to servo amplifier immediately after switching is the lower speed between "0: Command speed" and "1:
Feedback speed".
30.0%
0
t
0
t
V
1000
0
[0, 0]
300
0
[1]
[0]
[0]
ON
OFF
OFF
ON
Torque
1000
0
Continuous operation to torque
control mode
Position control mode
Position control mode
0: Position control mode
30: Continuous operation to torque control mode
Control mode switching
request device
Control mode setting device
Control mode (b2, b3)
([Md.108] Servo status1
(R: 48n/Q: #8010+20n))
[St.1040] Start accept flag
(R: n/Q: M2001+n)
Torque command device
Speed command device
(During continuous operation
to torque control: Speed limit
command value)
Control mode (b14)
([Md.125] Servo status3
(R: 48n/Q: #8012+20n))
Contact with target
Summary of Contents for MELSEC iQ-R16MTCPU
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