Chapter 8 Adjustment
8–15
that this may cause vibration to increased while the
motor is running.
No.
Abbrev.
Parameter name
Explanation
Setting range
SV030
IVC
Voltage non-sensitive
band compensation
Set the standard value 20. Note that the vibration could increase during
motor operation.
0 to 200
(4) Fine torque compensation
There may be cases when not much torque is generated during low speed feed, or when the wear
torque and unbalance torque during lowering an unbalance axis or the wear torque and
deceleration torque before a quadrant torque changeover during circular cutting are unbalanced.
These can cause the motor output torque to be approximately zero and the control accuracy to
drop. In this case, the control accuracy can be improved by using fine torque compensation. Note
that this may cause vibration during motor operation to increase.
SV030 TDCG Voltage non-sensitive
band compensation/
fine torque
compensation Cx
Set the fine torque compensation amount Cx in the high-order
8 bits.
Normally, 0 is set. Set 255 to use this function.
–32768
to
32767
SV040 LMCT Lost motion
compensation
non-sensitive band/fine
torque compensation
Cy
µm
/
Set the fine torque compensation Cy in the high-order 8 bits.
Normally, 0 is set. Set 255 to use this function.
–32768
to
32767
SV045 TRUB Collision detection
function frictional
torque/fine torque
compensation B1
Stall %
(rated
current %)
/
To use fine torque compensation, set approx. 10 to 30 in the
high-order 8 bits.
–32768
to
32767
Current (rated %) for Cx, Cy, B1 setting
value 256
MF23
22.5%
SF53
24.9%
RF43
13.8%
SF102
26.6%
RF73
20.1%
SF103
30.1%
SF52
24.9%
SF202
24.8%
Current command after
compensation
Current command
before compensation
Cx
(sv030)
Cy (sv040)
B1 (sv045)
