
B-65270EN/05 4.SERVO FUNCTION DETAILS
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Setting the correction gain of the following parameters with a nonzero
value can switch between the negative direction smoothing
compensation and the positive direction smoothing compensation. In
this case, the smoothing compensation parameter explained above
applies only to feeding in the positive direction.
(Series 9096 and Series 90B0/M(13) and earlier editions are not
supported.)
2782 (FS15i)
Smoothing compensation performed twice per pole pair (negative direction)
2369 (FS30i, 16i)
Correction gain (high-order 8 bits) Correction phase (low-order 8 bits)
2783 (FS15i)
Smoothing compensation performed four times per pole pair (negative direction)
2370 (FS30i, 16i)
Correction gain (high-order 8 bits) Correction phase (low-order 8 bits)
2784 (FS15i)
Smoothing compensation performed six times per pole pair (negative direction)
2371 (FS30i, 16i)
Correction gain (high-order 8 bits) Correction phase (low-order 8 bits)
Since the compensation parameters differ from motor to motor
(depending on the motor rather than the model), these parameters must
be determined for each motor assembled.
In principle, variation in torque command that is generated when the
motor is fed at a low speed depends on the position. The application of
smoothing compensation cancels this position-dependent
characteristic, allowing the motor to move smoothly.
The measuring instruments that can be used to determine these
parameters include "SERVO GUIDE" (Ver. 2.00 or later) and "SD"
(servo tuning software).
If using SERVO GUIDE (Ver. 2.00 or later)
By using SERVO GUIDE (Ver. 2.00 or later), these parameters can be
determined easily. Follow the procedure below to measure the
activating phase and torque command, which are required to
determine the compensation parameters.
<1> Set channels as follows:
Channel 1: Activating phase
Select the target axis for measurement, and set "ROTOR" as the
data type.