
4.SERVO FUNCTION DETAILS B-65270EN/05
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<5> By setting the parameter below, the feed-forward function can be
used for cutting feed as well.
#7 #6 #5 #4 #3 #2 #1 #0
1800 (FS15i)
FFR
1800 (FS30i, 16i)
FFR (#3) Specifies whether feed-forward control during rapid traverse is
enabled or disabled.
1: Enabled
0: Disabled
By using the feed-forward function during rapid traverse, the
positioning time can be reduced. On some machines, however, a
shock may occur at the time of acc./dec. In such a case, use fine
acc./dec. (⇒ Subsec. 4.8.3) at the same time, or make
adjustments such as increasing the acc./dec. time constant.
By using the cutting feed/rapid traverse switchable fine acc./dec.
function at the same time, a feed-forward coefficient can be set
separately for cutting feed and rapid traverse. (See Subsec. 3.4.2,
"Cutting Feed/Rapid Traverse Switchable Function" and Subsec.
4.8.3 "(5) Setting parameters for the fine acc./dec. function, used
separately for cutting and rapid traverse.")
<6> To use the EGB function, set the following parameter:
#7 #6 #5 #4 #3 #2 #1 #0
1955 (FS15i)
FFAL
2011 (FS30i, 16i)
FFAL (#1) Feed-forward control is:
1: Always enabled regardless of the mode.