
B-65150E/04 3. α SERIES PARAMETER ADJUSTMENT
− 57 −
No. 1702
−
Fine acceleration/deceleration time constant
No. 2109
−
3.3.4 Cumulative Feed
When the time from the detection of a position error until the
compensation torque is output is too long, a cumulative feed occurs
during low-speed feed. Improvement in gain is required. However, for
a machine with high friction and torsion, a higher gain cannot be set. In
such a case, a cumulative feed phenomenon may occur.
(Reference: Parameter numbers)
For details, see Chapter 4, "Servo Function Details."
Function 1: VCMD offset function
#7 #6 #5 #4 #3 #2 #1 #0
No. 1808 No. 8X03 VOFS
No. 2003 No. 1003
VOFS (#7) 1: Enables the VCMD offset function.
No. 1857 No. 8X45 Incomplete integral gain
No. 2045 No. 1045
<1> Adjust the position gain and velocity loop gain
according to the description in Subsec. 3.3.1.
<4> Set the VCMD offset function. (Function 1)
<2> Set PI control.
<3> To improve torque start, increase the velocity loop
integral gain.
<5> Set the incomplete integral coefficient within the
range 32700 to 32767 (function 2). For axes subject
to interpolation, this coefficient must not be set.