LNC-M600 Leading Numerical Controller Maintenance Manual

LNC-M600
APPENDIX A: PARAMETER ADJUSTMENT EXAMPLE
3000*4
CMR = = 1.2 pulses / um ,which means 1um on X axis is correspond to 1.2
10000
pulses that is the encoder total output signal of ball screw.
Control Loop is as below:
X
NC
Motor
Ballscrew
Interpolatio 1.2 K p 10/32767 200 1 1/4 1/60
1/S
12000
Y
um
pulse
V
rpm
Motor rpm
ball screw rpm
Ball
screw
rps
rev
pulse
But, since there is no extra parameters for GR factor setting in position feedback,
modification is as following:
X
NC
Motor
Ballscrew
Interpolatio 1.2
K p
10/32767 200/4 1
1/60
1/S 12000
Y
um
pulse
V
rpm
rpm
rps
rev
pulse
Input and Output Relationship:
K
p
⋅10
32767⋅
200⋅1
4⋅1
60⋅1
S ⋅12000
Y =
X
1+
K ⋅10
32767⋅
200⋅1
4⋅1
60⋅1
S ⋅12000
K
p
⋅10
32767⋅
200 4⋅1
60⋅1
S ⋅12000
3.05185K
p
=
X =
1+
K ⋅10
32767⋅
200 4⋅1
60⋅1
S ⋅12000
S + 3.05185K
p
p
p
X
So, in this application example, parameter #0108 setting value is 200/4=50 and the
K p setting value is
30
3.05185
= 9.83 on PCC1620 motion control board.
304 LNC Technology Co., Ltd.