
B-65270EN/05 4.SERVO FUNCTION DETAILS
- 215 -
<7> Setting the torsion torque compensation coefficient
Torsion torque compensation is set when an adequate velocity loop
gain cannot be obtained and acceleration torsion compensation does
not work efficiently. The delay in velocity control can be compensated
by adding the differential of the compensation value to TCMD.
2815(FS15i)
Torsion preview control: Torsion torque compensation coefficient LSTKT
2402(FS16i)
[Unit of data] %
[Valid data range] 0 to 1000
Compensation coefficient used when the compensation value of
VCMD is differentiated to compensate TCMD. When 100% is set as
the compensation coefficient for TCMD, the acceleration amount of
the motor itself is indicated.
MCMD
+
PG
Σ
-
Position FB
Coefficient depending on acceleration
Position error
Position
gain
VCMD
Acceleration torsion
compensation
Velocity control
TCMD
+
LSTKT
Differential
Torsion torque compensation
Fig. 4.6.9(n) Torsion torque compensation