
4.SERVO FUNCTION DETAILS B-65270EN/05
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4.6.3 RISC Feed-forward Function
(1) Overview
The feed-forward system is used during high precision contour control
based on RISC (HPCC mode) or AI contour control (AICC mode) in
order to shorten the interpolation cycle, improving the performance of
high-speed, high precision machining.
(This function is insignificant for AI nano-contour control complying
with nano-interpolation as a distribution system, AI high-precision
contour control, AI nano high-precision contour control, and fine
HPCC.)
By using this function, the response of the servo side can be improved
when the distribution period is 4 ms, 2 ms, or 1 ms.
(2) Series and editions of applicable servo software
(Series 15i-B,16i-B,18i-B,21i-B,0i-B,0i Mate-B,Power Mate i)
Series 9096/A(01) and subsequent editions
(*)
Series 90B0/A(01) and subsequent editions
Series 90B1/A(01) and subsequent editions
Series 90B6/A(01) and subsequent editions
(Series 0i-C,0i Mate-C,20i-B)
Series 90B5/A(01) and subsequent editions
(*) Series 9096 supports distribution periods of 1 ms and 2 ms only,
and it does not support 4 ms.
(3) Setting parameters
<1> Set the following parameters in the same way as for the advanced
preview feed-forward function.
<2> Set the parameters (RISCFF and RISCMC) below.
#7 #6 #5 #4 #3 #2 #1 #0
1959 (FS15i)
RISCFF
2017 (FS30i, 16i)
RISCFF (#5) 1: Feed-forward response improves when RISC is used.
0: Feed-forward response remains unchanged when RISC is used.
#7 #6 #5 #4 #3 #2 #1 #0
1740 (FS15i)
RISCMC
2200 (FS30i, 16i)
RISCMC (#5) When RISC is used:
1: Feed-forward response improves.
0: Feed-forward response remains unchanged.