YASKAWA SGD7S-xxxDA0 series Product Manual page 135

5.4 Coasting Distances for Dynamic Braking
5.4.2 Data for Calculating Coasting Distance
Motor Type
Linear Servomotors
Characteristic Impedance
The following graphs give the relationship between the characteristic impedance and speed of
the Servomotors.
Refer to the graph of the Servomotor that will be used, and use characteristic impedance Zm
from the speed before starting dynamic braking.
 Rotary Servomotors
5-20
SERVOPACK Model
SGD7-1R9D
SGD7-3R5D
SGD7S-5R4D
SGD7S-8R4D
SGD7S-120D
SGD7S-170D
SGD7S-260D
SGM7G-03D F
70
60
50
40
30
20
10
0
0 500 1000 1500 2000
Motor Speed (min
Servomotor Model
SGLFW-35D120A
SGLFW-35D230A
SGLFW2-30D070A
SGLFW2-30D120A
SGLFW2-30D230A
SGLFW-50D200B
SGLTW-35D170H
SGLTW-50D170H
SGLFW-50D380B
SGLFW-1ZD200B
SGLFW2-90D200A
SGLFW2-45D380A
SGLTW-35D320H
SGLTW-50D320H
SGLFW-1ZD380B
SGLFW2-90D380A
SGLTW-40D400B
SGLFW2-90D560A
SGLFW2-1DD380A
SGLTW-40D600B
SGLTW-80D400B
SGLTW-80A600B
SGLFW2-1DD560A
50
45
40
35
30
25
20
15
10
5
0
2500 3000 3500 0
-1 )
Continued from previous page.
Coasting Distance
Coefficients
α
0.94
0.94
15.62
4.16
1.04
0.95
1.75
0.74
0.95
1.15
0.73
0.93
1.75
0.74
1.15
0.73
0.45
0.73
0.65
0.45
0.46
0.65
0.46
SGM7G-05D F
500 1000 1500 2000 2500
Motor Speed (min -1 )
-6
β [×10 ]
544.23
132.48
487.67
313.30
313.30
183.90
100.60
87.00
45.53
37.13
49.83
38.73
25.57
22.18
9.28
12.46
34.53
5.52
6.18
15.86
9.17
2.72
4.20
3000 3500