1-11
H Feed-forward Function (U Series: Feed-forward Value; H Series:
Position Loop Feed-forward Gain)
• The feed-forward function is enabled at the time of pulse-train input.
• This function adds the frequency of pulse-train input to the speed loop.
• The command is output to the speed loop before position deviation pulses are accumulated, thus re-
ducing the deviation counter value and saving positioning time.
• Feed-forward adjustment will not be effective if the position loop gain and speed loop gain are too high.
Gain Adjustment Chapter 1
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