
4.SERVO FUNCTION DETAILS B-65270EN/05
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(3) Setting parameters
• The following parameters are all set for the slave axis (the axis
for which an even number is set in parameter No. 1023) only.
#7 #6 #5 #4 #3 #2 #1 #0
2688 (FS15i)
ASYN
2275 (FS16i)
ASYN (#3) Synchronous axes automatic compensation function is:
0: Disabled.
1: Enabled.
2816 (FS15i)
Synchronous axes automatic compensation coefficient (K)
2403 (FS16i)
[Unit of data] Detection unit / TCMD unit × 4096
[Valid data range] -32767 to 32767
From the relationship between the current value generated in the
stopped state when this function is disabled and the position error
between the synchronized axes, determine the coefficient (K)
according to the following expression:
K = position error/current value (in TCMD) × 4096
....................... <1>
When the current value is measured on the servo tuning screen, the
current value is indicated in amperes or as the percentage to the rated
current value. So, use expression <2> or <3> for calculation.
K = position error/{current value (%) × Ir × 7282/6554} × 4096
..................................................................................... <2>
Ir: Rated current in parameter No. 2086 (Series 16i) or No. 1979
(Series 15i)
K = position error/{current value (A)/Amax × 7282} × 4096
..................................................................................... <3>
Amax: Maximum current value of the amplifier
Measure the current value when the problem of a pull is being
observed at the release of emergency stop. The position error between
the synchronized axes is obtained from the difference in position error
between the master axis and slave axis at the time of emergency stop.
Normally, the position error of the master axis at the time of
emergency stop is 0, so you need to check the position error of the
slave axis only.
Example)
Suppose that the position error of the slave at the time of
emergency stop is 200, the current value at the release of
emergency stop is 60% (the percentage to the rating), and 1437 is
set in parameter No. 2086 (rated current value for the Series 16i):
Settings = 200 / { 1437 × 60/100 × 7282/6554 } × 4096 = 855
2817 (FS15i)
Synchronous axes automatic compensation: Maximum compensation
2404 (FS16i)
[Unit of data] Detection unit
[Valid data range] 0 to 5000
Set the maximum compensation amount in synchronous axes
automatic compensation.