
B-63530EN/03 4.DESCRIPTION OF PARAMETERS
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5280
Position control loop gain for the spindle and tapping axis in rigid tapping
(common to all gears)
5281
Position control loop gain for the spindle and tapping axis in rigid tapping
(first-stage gear)
5282
Position control loop gain for the spindle and tapping axis in rigid tapping
(second-stage gear)
5283
Position control loop gain for the spindle and tapping axis in rigid tapping
(third-stage gear)
Position control loop gain for the spindle and tapping axis in rigid tapping
(fourth-stage gear)
5284
[Data type] Word
[Unit of data] 0.01 s
-1
[Valid data range] 1 to 9999
Each of these parameters is used to set a position control loop gain for
the spindle and tapping axis in rigid tapping. These parameters
significantly affect the precision of threading. By conducting a cutting
test, make a tuning to obtain an optimal value.
When performing threading with an analog spindle, tune the loop gain
multipliers (parameter No. 5291 to No. 5294) as well.
NOTE
1 When these parameters are set, the power must be
turned off before operation is continued.
2 To use a varied loop gain on a gear-by-gear basis,
set parameter No. 5280 to 0, and set a loop gain for
each gear in parameters No. 5281 through No.
5284. The specification of a loop gain on a
gear-by-gear basis is disabled if parameter No. 5280
is set to a value other than 0. In such a case, the
value set in parameter No. 5280 is used as a loop
gain that is common to all the gears.
3 When rigid tapping is performed using the second
and third spindles
• When bit 1 (SPR) of parameter No. 5204 is set to
0, the setting of parameter No. 5280 or the
settings of parameters No. 5281 and No. 5282
are applied to the second and third spindles, as
well as to the first spindle.
• When bit 1 (SPR) of parameter No. 5204 is set to
1, the settings of parameters No. 5341 through
No. 5343 are applied to the second spindle, while
the settings of parameters No. 5344 through No.
5346 are applied to the third spindle.