6 (2) holding brake moment of inertia, 3) derating rate for servomotor with oil seal, 4) torque-motor speed characteristics – Yaskawa Sigma II Series DC Power Input SGMAJ User Manual
Page 47
3 Specifications and Dimensional Drawings
3.2.1 SGMAJ Servomotors Without Gears
3-6
(2) Holding Brake Moment of Inertia
The moment of inertia of the servomotor with holding brake is expressed using the following equation.
(The moment of inertia of the servomotor with holding brake) =
(rotor moment of inertia) + (brake moment inertia)
* These values are reference values.
(3) Derating Rate for Servomotor With Oil Seal
For a motor with oil seal, use the following derating rate because of the higher friction torque.
(4) Torque-motor Speed Characteristics
Servomotor Model
SGMAJ-
A5C
A5E
A8C
01E
02E
03E
Holding Brake
Moment of Inertia J
×10
-4
kg
x
m
2
0.0085
0.058
×10
-3
oz
x
in
x
s
2
∗
0.12
0.82
Servomotor Model
SGMAJ-
A5C
A5E
A8C
01E
02E
03E
Derating Rate
(%)
70
80
90
95
SGMAJ-A5C (DC24V)
SGMAJ-A8C (DC24V)
0
1000
2000
3000
4000
5000
0 0.1
0.2 0.3 0.4
0
1000
2000
3000
4000
5000
0 0.1 0.2 0.3 0.4 0.5 0.6
A
B
A
B
Motor
speed
(min
-1
)
Motor
speed
(min
-1
)
0 10 20 30 40 50
Torque (ozxin)
Torque (Nxm)
10
0
20 30 40 50 60 70 80
Torque (ozxin)
Torque (Nxm)
A
B
A
B
SGMAJ-A5E (DC48V)
SGMAJ-01E (DC48V)
0
1000
2000
3000
4000
5000
0 0.1 0.2 0.3 0.4 0.5
0
1000
2000
3000
4000
5000
0 0.2 0.4 0.6 0.8 1.0
Motor
speed
(min
-1
)
Motor
speed
(min
-1
)
0 10 20 30 40 50 60 70
Torque (Nxm)
Torque (ozxin)
0 20 40 60 80 100120140
Torque (Nxm)
Torque (ozxin)
SGMAJ-03E (DC48V)
0
1000
2000
3000
4000
5000
0 0.4 0.8 1.2 1.6 2.0
A
B
Continuous Duty Zone
A
Intermittent Duty Zone
B
0 40 80 120 160 200 240 280
Torque (Nxm)
Torque (ozxin)
A
B
0 40 80 120 160 200
Torque (ozxin)
SGMAJ-02E (DC48V)
0
1000
2000
3000
4000
5000
0
0.4 0.8 1.2 1.6
Motor
speed
(min
-1
)
Torque (Nxm)