
B-63330EN/03 4.DESCRIPTION OF PARAMETERS
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5975 Position gain multiplier (eighth stage)
[Input type] Parameter input
[Data type] Integerspindle
[Valid data range] 1 - 32767
Set the position gain multiplier of the analog spindle for gear 1 in the
servo mode (rigid tapping, spindle positioning, and so forth) .
Position gain multiplier GC is obtained from the following equation:
LSPPLS
EPC
GC
××
×××
=
3602048000
PLS : Number of pulses output from the position coder (pulses/rev)
SP : Number of gear teeth on the spindle side
PC : Number of gear teeth on the position coder side
E : Specified voltage (V) for turning the spindle motor at 1000
min
-1
L : Angular displacement of the spindle (degrees) per spindle
motor rotation
Example: For the spindle motor and gear ratio given below, GC is
calculated as follows:
PLS = 4096 pulses/rev
SP = 1
PC = 1
E = 2.2 V
L = 360 deg
1100
14096
2.213602048000
=
××
×××
=GC
Note)On the assumption that the spindle motor used turns at 4500
min
-1
at 10 V, 2.2 V is required to turn the spindle motor at 1000
min
-1
.
5976 Drift compensation value (eighthstage)
[Input type] Parameter input
[Data type] Integerspindle
[Unit of data] Velo
[Valid data range] -500 - 500
Set the drift compensation value of the analog spindle for gear 1 in
the servo mode (rigid tapping, spindle positioning, and so forth) .
Drift compensation DC (a voltage equivalent to positional deviation)
is obtained from the following equation:
ERGCGDC ×××= 000000192.0
G : Position gain in servo mode (0.01/sec)
GC :Position gain multiplier
ER : Positional deviation (detection unit)