9. Adjustment
9 - 8
During SHG control even if the PGN1 setting value is the same, the actual position loop gain will be
higher, so the speed loop must have a sufficient response. If the speed loop response is low,
vibration or overshooting could occur during acceleration/deceleration in the same manner as
conventional control. If the speed loop gain has been lowered because machine resonance occurs,
lower the position loop gain and adjust.
No.
Abbrev.
Parameter name
Setting
ratio
Setting example Explanation Setting range
SV003
(SV049)
PGN1
(PGN1sp)
Position loop gain 1
1 23 26 33 38 47
1 to 200
SV004
(SV050)
PGN2
(PGN2sp)
Position loop gain 2 8
3
62 70 86 102 125
0 to 999
SV057
(SV058)
SHGC
(SHGCsp)
SHG control gain
6 140 160 187 225 281
Always set a combination of 3
parameters
0 to 1200
SV008 VIA Speed loop lead
compensation
Set 1900 as a standard for SHG control. 1 to 9999
SV015 FFC Acceleration rate
feed forward gain
Set 100 as a standard for SHG control. 0 to 999
POINT
The SHG control is an optional function. If the option is not set in the CNC, the
alarm 37 (at power ON) or warning E4, Error Parameter No. 104 (2304 for M60S/
E60 Series NC) will be output.
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