6-127
6
Setting the Speed/Torque Control Switching Timer (d5-06)
The delay between a change in the speed/torque control switching function input (ON to OFF or OFF to ON)
and the corresponding change in the control mode can be set in parameter d5-06. During the timer delay, the
value of the 2 analog inputs will retain the values they had when the ON/OFF status of speed/torque control
switching signal was changed. Use this delay to complete any changes required in external signals.
Fig 6.88 shows an example of speed/torque control switching.
Fig 6.88 Speed/Torque Control Switching Time Chart
Application Precautions
• The function of the torque reference input (A1 or A2) changes when the control mode is switched between
torque control and speed control.
During speed control: The analog input terminal is used as the torque limit input.
During torque control: The analog input terminal is used as the torque reference input.
• When the run command is turned OFF, the control method will be speed control. Even from the torque
control mode, the system will automatically change to speed control and decelerate to a stop when the run
command turns OFF.
Speed/torque change
signal
Run command
Control mode
Terminal A1 input
Terminal A2 input
OPEN OPEN
CLOSED CLOSED
Stop
Run
Stop
Speed Speed Speed (decel to stop)
Speed
reference
Speed limit
Speed limit
Speed
reference
Torque Torque
Torque limit Torque limit
Torque
reference
Torque
reference
1 2 3 4
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