Panasonic minas a4 series Instruction Manual page 309

Lead of ball screw, L =10mm
Gear reduction ratio, R = 1
Position resolution,
∆M =0.005mm
Encoder, 2500P/r
(E= 10000P/r)
Lead of ball screw, L =20mm
Gear reduction ratio, R = 1
Position resolution,
∆M =0.0005mm
Encoder, 2500P/r
(E= 10000P/r)
17
Encoder : 17-bit (E = 2
Lead of ball screw, L =10mm
Gear reduction ratio, R = 1
Position resolution,
∆M = 0.0005mm
Line driver pulse input,
500kpps
Encoder, 17-bit
Ditto
To make it to 2000r/min.
Electronic gear ratio
0.005 x 10000 x 1
10
0.0005 x 10000 x 1
20
17
0.0005 x 2 x 1
20
P/r)
17
1 x 2
= =
40000
Motor rotational speed (r/min), N = F x
1 x 2
500000 x
10000
1
= 50 x 60 x
2
2
Electronic gear ratio
2000 x 2
D =
500000 x
15
3
1 x 2 x 2
=
3
2 x 3750
Travel distance per command pulse (mm)
(Position resolution)
D 1
∆M = x
E R
15
2 1
x x
17
3750 2
∆M x E x R
D =
L
10000 x 2
= 5
D < 1, hence
= 0.25
use 17-bit.
2 15
1 x 2 x 2
2
2 x 10000
15
1
x x 60
17
2
= 750
N x E
D =
F x 60
17 1 17
2 x 1000 x 2
=
60 30000000
15
1 x 2
=
3750
x L
1 1 20
x 20 = x
2
1 3750 2
[Supplement]
Pr48 x 2
D =
Pr4B
Pr48 = 10000
°
Pr4A = 0
2000
Pr4B = 2000
"D = 1" is the
condition for
minimum resolution.
Pr48 = 1
Pr4A = 15
Pr4B = 10000
D
x 60
E
Pr48 x
D =
Pr4B
Pr48=1
Pr4A=15
Pr4B=3750
20
= = 0.00133mm
3750 x 4
Pr4A
Pr4A
2P
307