
4.SERVO FUNCTION DETAILS B-65270EN/05
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#7 #6 #5 #4 #3 #2 #1 #0
1747 (FS15i)
PK2D50
2207 (FS30i, 16i)
PK2D50 (#3) When the variable proportional gain function in the stop state enabled
(K2VDN = 1):
0: The velocity loop proportional gain in the stop state is 75%.
1: The velocity loop proportional gain in the stop state is 50%.
When an arbitrary magnification is used for a proportional gain in the
stop state during cutting feed, set the function bit for stop judgment
level of the function for changing the proportional gain in the stop
state. In addition, set the following parameter:
2737 (FS15i)
2324 (FS30i, 16i)
Variable proportional gain function in the stop state : Arbitrary magnification
in the stop state (during cutting feed only)
[Unit of data] %
[Recommended value] 25 to 100
(4) Example of parameter setting
(a) When the cutting feed/rapid traverse switchable velocity loop
gain function (Sec. 4.3) is not used, and
Bit 3 of No. 1958 (Series 15i) or bit 3 of No. 2016 (Series 30i,
16i, and so on) = 1
Actual velocity gain in the stop state=(velocity gain setting)×0.75
(b) When the cutting feed/rapid traverse switchable velocity loop
gain function (Sec. 4.3) is not used,
Bit 3 of No. 1958 (Series 15i) or bit 3 of No. 2016 (Series 30i,
16i, and so on) = 1, and
Bit 3 of No. 1747 (Series 15i) or bit 3 of No. 2207 (Series 30i,
16i, and so on) = 1
Actual velocity gain in the stop state=(velocity gain setting)×0.5
(c) When the cutting feed/rapid traverse switchable velocity loop
gain function (Sec. 4.3) is not used,
Bit 3 of No. 1958 (Series 15i) or bit 3 of No. 2016 (Series 30i,
16i, and so on) = 1, and
No. 2373 (Series 15i) or No. 2324 (Series 30i,16i, and so on) = α
Actual velocity gain in the stop state=(velocity gain setting)×α/100
When the absolute value of an error is lower than the stop judgment
level, the function changes the proportional gain of the velocity loop
(PK2V) to 75% or 50% of the set value.
If the machine vibrates while in the stop state, enable this function and
set a value greater than the absolute value of the error causing the
vibration as the stop judgment level. The function cannot stop the
vibration of a machine in the stop state when the current velocity loop
proportional gain is too high. If this occurs, reduce the velocity loop
proportional gain.