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5. Spindle Adjustment
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(5) Adjusting speed command dual-cushion
When a deceleration start causes rippling in the phase current FB waveform, or when a spindle
override change causes gear impact noise, the speed command dual-cushion (SP046) setting
should be adjusted. The smaller the SP046 setting value, the longer the acceleration/deceleration
time. Therefore, set SP046 value as high as possible, while observing the phase current FB
waveform, or while listening to the impact noise. (Setting upper limit = 5)
No. Abbr. Parameter name Details
Setting
range
Standard
SP046 CSN2* Speed command
dual cushion
For an acceleration/deceleration time constant defined in
SP019 (CSN1) , this parameter is used to provide smooth
movement only at the start of acceleration/deceleration.
As the value of this parameter is smaller, it moves smoother but
the acceleration/deceleration time becomes longer.
To make this parameter invalid, set "0".
0 to 1000 0
Adjusting SP046
Does waveform ripple or
impact noise occur?
Check for other causes
NO
Measure acceleration/deceleration
waveform at high speed
Change the spindle override
Increase SP046 by –1.
YES
Set SP046=5
YES
NO
SP046 adjustment completed
SP046=1 ?