12.2 A: Initialization Parameters
638 YASKAWA SIEPC71061705H GA700 Series Technical Manual
Torque Compensation (Torque Bias)
This function enters the torque compensation (torque bias) signal that matches a set load from the MFAI terminal
in Closed Loop Vector Control to decrease the overshoot when you open and close the brake. You must detect the
load and motoring/regeneration on the machine side before you use the function. If there is a polarity error, shock
can increase.
Item Description
Sequence Circuit Configuration
Time chart: Increase Enter the analog signal as the torque compensation (torque bias) signal as specified by the load quantity before drive operation until
drive operation completes. The default setting is 10 V/100% torque.
Enter a positive polarity during a motoring load, and enter a negative polarity during a regenerative load.
Time chart: Decrease Enter the analog signal as the torque compensation (torque bias) signal as specified by the load quantity before drive operation until
drive operation completes. The default setting is 10 V/100% torque.
Enter a negative polarity during a motoring load, and enter a positive polarity during a regenerative load.
Note:
• Holds through an external source to not change the torque compensation signal during run. If you change the torque compensation
signal during run, the motor can oscillate.
• When you set motor reverse to the increase command and set motor forward to the decrease command, the polarity of the torque
compensation signal will reverse.
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