Yaskawa G7 Drive - Manual (Page 344)

Individual Functions
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„ Speed/Torque Control Switching Function
It is possible to switch between speed control and torque control when one of the multi-function inputs (H1-01
to H1-10) is set to 71 (Speed/Torque Control Change). Speed control is performed when the input is OFF and
torque control is performed when the input is ON. Set d5-01 to switch speed/torque control.
„ Setting the Speed/Torque Control Switching Timer
The delay between a change in the speed/control switching function input (ON to OFF or OFF to ON) and the
corresponding change in the control mode can be set in d5-06. During the timer delay, the value of the 3 ana-
log 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.
Application Precautions
• The frequency reference (during speed control) is set in b1-01. The speed limit during torque control is set
in d5-03.
• If the torque reference has been assigned to a multi-function analog input, terminal A2, or terminal A3, the
input function 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 turns OFF, the control method when stopped will be for 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.
• When A1-02 (control method selection) is set to 3 (flux vector control), the speed/torque change command
(a setting of 71) can be set for a multi-function input (H1-01 to H1-10) to switch between speed and torque
control during operation. An example is shown below.
Terminal No.
User Parameter
No.
Factory Setting Setting Function
8 H1-06 8 71 Speed/torque control change
A1
b1-01 1 1
Frequency reference selection
(terminals A1, A2)
C5-03 1 1 Speed limit (terminals A1, A2)
A3 H3-05 0 13 Torque reference/torque limit